{"id":6772,"date":"2025-07-14T00:40:31","date_gmt":"2025-07-14T00:40:31","guid":{"rendered":"https:\/\/astronomia.udp.cl\/?page_id=6772"},"modified":"2025-08-21T17:46:40","modified_gmt":"2025-08-21T17:46:40","slug":"agn-and-black-holes","status":"publish","type":"page","link":"https:\/\/astronomia.udp.cl\/en\/research\/areas\/agn-and-black-holes\/","title":{"rendered":"AGN and Black Holes"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"6772\" class=\"elementor elementor-6772\" data-elementor-settings=\"{&quot;ha_cmc_init_switcher&quot;:&quot;no&quot;}\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4accad7 elementor-section-height-min-height elementor-section-boxed elementor-section-height-default elementor-section-items-middle\" data-id=\"4accad7\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e27422f\" data-id=\"e27422f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-776163b elementor-widget elementor-widget-heading\" data-id=\"776163b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.20.0 - 13-03-2024 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><h1 class=\"elementor-heading-title elementor-size-default\">AGN and Black Holes<\/h1>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9d75dfe elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9d75dfe\" data-element_type=\"section\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-9fd0f32\" data-id=\"9fd0f32\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ca33823 elementor-widget elementor-widget-heading\" data-id=\"ca33823\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Research Projects<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-0479f39 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"0479f39\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;_ha_eqh_enable&quot;:&quot;yes&quot;,&quot;_ha_eqh_to&quot;:&quot;widget&quot;,&quot;_ha_eqh_disable_on_tablet&quot;:&quot;no&quot;,&quot;_ha_eqh_disable_on_mobile&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-ad74115\" data-id=\"ad74115\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cc4d18c   elementor-widget__width-initial premium-modal-dismissible-yes elementor-widget elementor-widget-premium-addon-modal-box\" data-id=\"cc4d18c\" data-element_type=\"widget\" data-settings=\"{&quot;premium_modal_box_animation&quot;:&quot;zoomIn&quot;}\" data-widget_type=\"premium-addon-modal-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\n\t\t<div class=\"premium-modal-box-container\" data-settings=\"{&quot;trigger&quot;:&quot;text&quot;,&quot;show_on_exit&quot;:false}\">\n\t\t\t<div class=\"premium-modal-trigger-container\">\n\t\t\t\t\t\t\t\t\t<span data-toggle=\"premium-modal\" data-target=\"#premium-modal-cc4d18c\" class=\"premium-modal-trigger-text\">\n\t\t\t\t\t\t<div >\n\t\t\t\t\t\t\tOptimization of AGN photometric redshifts for LSST\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t<div id=\"premium-modal-cc4d18c\" class=\"premium-modal-box-modal\"\n\t\t\trole=\"dialog\"\n\t\t\tstyle=\"display: none\"\n\t\t\t>\n\t\t\t\t<div class=\"premium-modal-box-modal-dialog\" data-delay-animation=\"\" data-modal-animation=\"zoomIn animated-\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-modal-box-modal-header\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"premium-modal-box-modal-title\">\n\t\t\t\t\t\t\t\t\tOptimization of AGN photometric redshifts for LSST\t\t\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-modal-box-close-button-container\">\n\t\t\t\t\t\t\t\t\t<button type=\"button\" class=\"premium-modal-box-modal-close\" data-dismiss=\"premium-modal\">&times;<\/button>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"premium-modal-box-modal-body\">\n\t\t\t\t\t\t<p style=\"text-align: left;\">The Rubin Observatory Legacy Survey of Space and Time (LSST) will observe 20,000 square degrees repeatedly throughout 10 years in 6 photometric bands (ugrizy), allowing us to study the variable universe with unprecedented detail, as well as obtaining an unprecedented combination of area and depth once all the observations are stacked. The survey will start in 2025, and is expected to detect an enormous amount of active galactic nuclei, or AGN. One of the fundamental challenges facing AGN studies is the need to determine accurate photometric redshifts, as spectra will not be available in the foreseeable future for the great majority of the sources. However, photometric redshifts for AGN are very inaccurate when based purely on broad bands due to the lack of strong spectral features. In this project we investigate the use of AGN variability to further constrain the photometric redshifts of these sources.<\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-0b9252d\" data-id=\"0b9252d\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-e7ec1a4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e7ec1a4\" data-element_type=\"section\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-5660017\" data-id=\"5660017\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-83d7b66 elementor-view-stacked elementor-widget-mobile__width-initial elementor-shape-circle elementor-widget elementor-widget-icon\" data-id=\"83d7b66\" data-element_type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<i aria-hidden=\"true\" class=\"hm hm-team-member\"><\/i>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-067b1ba\" data-id=\"067b1ba\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cafd3a9 elementor-widget elementor-widget-heading\" data-id=\"cafd3a9\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h6 class=\"elementor-heading-title elementor-size-default\">People<\/h6>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-36d061f elementor-widget__width-initial dark-background-links elementor-widget elementor-widget-text-editor\" data-id=\"36d061f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.20.0 - 13-03-2024 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<ul><li style=\"text-align: left;\"><a href=\"https:\/\/astronomia.udp.cl\/en\/researcher\/roberto-j-assef\/\" target=\"_blank\" rel=\"noopener\">Dr. Roberto Assef<\/a><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-c1eeae4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c1eeae4\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;_ha_eqh_enable&quot;:&quot;yes&quot;,&quot;_ha_eqh_to&quot;:&quot;widget&quot;,&quot;_ha_eqh_disable_on_tablet&quot;:&quot;no&quot;,&quot;_ha_eqh_disable_on_mobile&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-0cf339a\" data-id=\"0cf339a\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8c684c8   elementor-widget__width-initial premium-modal-dismissible-yes elementor-widget elementor-widget-premium-addon-modal-box\" data-id=\"8c684c8\" data-element_type=\"widget\" data-settings=\"{&quot;premium_modal_box_animation&quot;:&quot;zoomIn&quot;}\" data-widget_type=\"premium-addon-modal-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\n\t\t<div class=\"premium-modal-box-container\" data-settings=\"{&quot;trigger&quot;:&quot;text&quot;,&quot;show_on_exit&quot;:false}\">\n\t\t\t<div class=\"premium-modal-trigger-container\">\n\t\t\t\t\t\t\t\t\t<span data-toggle=\"premium-modal\" data-target=\"#premium-modal-8c684c8\" class=\"premium-modal-trigger-text\">\n\t\t\t\t\t\t<div >\n\t\t\t\t\t\t\tPredicting Rubin LSST AGN Number Counts\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t<div id=\"premium-modal-8c684c8\" class=\"premium-modal-box-modal\"\n\t\t\trole=\"dialog\"\n\t\t\tstyle=\"display: none\"\n\t\t\t>\n\t\t\t\t<div class=\"premium-modal-box-modal-dialog\" data-delay-animation=\"\" data-modal-animation=\"zoomIn animated-\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-modal-box-modal-header\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"premium-modal-box-modal-title\">\n\t\t\t\t\t\t\t\t\tPredicting Rubin LSST AGN Number Counts\t\t\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-modal-box-close-button-container\">\n\t\t\t\t\t\t\t\t\t<button type=\"button\" class=\"premium-modal-box-modal-close\" data-dismiss=\"premium-modal\">&times;<\/button>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"premium-modal-box-modal-body\">\n\t\t\t\t\t\t<p style=\"text-align: left;\">The Rubin Observatory Legacy Survey of Space and Time (LSST) will observe 20,000 square degrees repeatedly throughout 10 years in 6 photometric bands (ugrizy), allowing us to study the variable universe with unprecedented detail, as well as obtaining an unprecedented combination of area and depth once all the observations are stacked. The survey will start in 2025, and is expected to detect an enormous amount of active galactic nuclei, or AGN. In this project we aim to use different prescriptions of the AGN luminosity function and the host properties to estimate the number of AGN that will be discovered by LSST in the upcoming years.<\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-6677316\" data-id=\"6677316\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-008be35 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"008be35\" data-element_type=\"section\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-1177b8e\" data-id=\"1177b8e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e1b8a5e elementor-view-stacked elementor-widget-mobile__width-initial elementor-widget__width-initial elementor-shape-circle elementor-widget elementor-widget-icon\" data-id=\"e1b8a5e\" data-element_type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<i aria-hidden=\"true\" class=\"hm hm-team-member\"><\/i>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-89204af\" data-id=\"89204af\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5087547 elementor-widget elementor-widget-heading\" data-id=\"5087547\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h6 class=\"elementor-heading-title elementor-size-default\">People<\/h6>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-64c6e97 elementor-widget__width-initial dark-background-links elementor-widget elementor-widget-text-editor\" data-id=\"64c6e97\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul><li style=\"text-align: left;\"><a href=\"https:\/\/astronomia.udp.cl\/en\/researcher\/roberto-j-assef\/\" target=\"_blank\" rel=\"noopener\">Dr. Roberto Assef<\/a><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-98f9629 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"98f9629\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;_ha_eqh_enable&quot;:&quot;yes&quot;,&quot;_ha_eqh_to&quot;:&quot;widget&quot;,&quot;_ha_eqh_disable_on_tablet&quot;:&quot;no&quot;,&quot;_ha_eqh_disable_on_mobile&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-8c20c56\" data-id=\"8c20c56\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-135aba0   elementor-widget__width-initial premium-modal-dismissible-yes elementor-widget elementor-widget-premium-addon-modal-box\" data-id=\"135aba0\" data-element_type=\"widget\" data-settings=\"{&quot;premium_modal_box_animation&quot;:&quot;zoomIn&quot;}\" data-widget_type=\"premium-addon-modal-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\n\t\t<div class=\"premium-modal-box-container\" data-settings=\"{&quot;trigger&quot;:&quot;text&quot;,&quot;show_on_exit&quot;:false}\">\n\t\t\t<div class=\"premium-modal-trigger-container\">\n\t\t\t\t\t\t\t\t\t<span data-toggle=\"premium-modal\" data-target=\"#premium-modal-135aba0\" class=\"premium-modal-trigger-text\">\n\t\t\t\t\t\t<div >\n\t\t\t\t\t\t\tAnnotated catalog of multi wavelength variability of AGN\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t<div id=\"premium-modal-135aba0\" class=\"premium-modal-box-modal\"\n\t\t\trole=\"dialog\"\n\t\t\tstyle=\"display: none\"\n\t\t\t>\n\t\t\t\t<div class=\"premium-modal-box-modal-dialog\" data-delay-animation=\"\" data-modal-animation=\"zoomIn animated-\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-modal-box-modal-header\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"premium-modal-box-modal-title\">\n\t\t\t\t\t\t\t\t\tAnnotated catalog of multi wavelength variability of AGN\t\t\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-modal-box-close-button-container\">\n\t\t\t\t\t\t\t\t\t<button type=\"button\" class=\"premium-modal-box-modal-close\" data-dismiss=\"premium-modal\">&times;<\/button>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"premium-modal-box-modal-body\">\n\t\t\t\t\t\t<div style=\"text-align: left;\">A static catalog of sources (ZTF Data Release, with more than a billion light curves, including variable and non-variable sources) will be cross-matched at different frequencies to select an homogeneous sample of AGN. This sample will be monitored for variability in the ZTF alert stream as well as data from the data release will be retrieved. Examples of survey catalogs that will be used are: VLASS, NEOWISE, Gaia, or eRASS, among others. The crossmatch of the catalogs needs to be done carefully because it becomes necessary to be confident of this process, particularly when working with large samples of data. We are developing a crossmatch service that will be made available for the scientific community. Then, the multiwavelength and time variable properties of this sample of AGN will be characterized, producing an annotated catalog which will be made available to the community and which will help feeding new classification models. The catalog will also allow searching and confirming new AGN.<\/div>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-bf7eec4\" data-id=\"bf7eec4\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-9cde8a6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9cde8a6\" data-element_type=\"section\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-f12505a\" data-id=\"f12505a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2837e08 elementor-view-stacked elementor-widget-mobile__width-initial elementor-shape-circle elementor-widget elementor-widget-icon\" data-id=\"2837e08\" data-element_type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<i aria-hidden=\"true\" class=\"hm hm-team-member\"><\/i>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-42adf53\" data-id=\"42adf53\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e8c0030 elementor-widget elementor-widget-heading\" data-id=\"e8c0030\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h6 class=\"elementor-heading-title elementor-size-default\">People<\/h6>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-5f7133e elementor-widget__width-initial dark-background-links elementor-widget elementor-widget-text-editor\" data-id=\"5f7133e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul><li style=\"text-align: left;\"><a href=\"https:\/\/astronomia.udp.cl\/en\/researcher\/lorena-hernandez-garcia\/\" target=\"_blank\" rel=\"noopener\">Dr. Lorena Hern\u00e1ndez-Garc\u00eda<\/a><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-590d3fe elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"590d3fe\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;_ha_eqh_enable&quot;:&quot;yes&quot;,&quot;_ha_eqh_to&quot;:&quot;widget&quot;,&quot;_ha_eqh_disable_on_tablet&quot;:&quot;no&quot;,&quot;_ha_eqh_disable_on_mobile&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-9ca1157\" data-id=\"9ca1157\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-35cba1e   elementor-widget__width-initial premium-modal-dismissible-yes elementor-widget elementor-widget-premium-addon-modal-box\" data-id=\"35cba1e\" data-element_type=\"widget\" data-settings=\"{&quot;premium_modal_box_animation&quot;:&quot;zoomIn&quot;}\" data-widget_type=\"premium-addon-modal-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\n\t\t<div class=\"premium-modal-box-container\" data-settings=\"{&quot;trigger&quot;:&quot;text&quot;,&quot;show_on_exit&quot;:false}\">\n\t\t\t<div class=\"premium-modal-trigger-container\">\n\t\t\t\t\t\t\t\t\t<span data-toggle=\"premium-modal\" data-target=\"#premium-modal-35cba1e\" class=\"premium-modal-trigger-text\">\n\t\t\t\t\t\t<div >\n\t\t\t\t\t\t\tOrigin of the variability of the soft excess in nearby AGN\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t<div id=\"premium-modal-35cba1e\" class=\"premium-modal-box-modal\"\n\t\t\trole=\"dialog\"\n\t\t\tstyle=\"display: none\"\n\t\t\t>\n\t\t\t\t<div class=\"premium-modal-box-modal-dialog\" data-delay-animation=\"\" data-modal-animation=\"zoomIn animated-\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-modal-box-modal-header\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"premium-modal-box-modal-title\">\n\t\t\t\t\t\t\t\t\tOrigin of the variability of the soft excess in nearby AGN\t\t\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-modal-box-close-button-container\">\n\t\t\t\t\t\t\t\t\t<button type=\"button\" class=\"premium-modal-box-modal-close\" data-dismiss=\"premium-modal\">&times;<\/button>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"premium-modal-box-modal-body\">\n\t\t\t\t\t\t<div style=\"text-align: left;\">The X-ray spectrum is essential for studying the central engines of Active Galactic Nuclei (AGN), as X-rays originate close to the black hole, are less affected by absorption, and are easier to isolate than optical or UV emissions. The primary X-ray emission is believed to result from Comptonization of optical\/UV photons in a hot corona, and is further modified by absorption and reflection from nearby or distant material. A persistent feature called the soft X-ray excess, observed below 2 keV, has been observed for decades and is common in type 1 AGN, yet its origin remains uncertain. AGN also show strong X-ray variability, which helps in probing the physical processes involved.<\/div><div style=\"text-align: left;\">This project aims to investigate the nature of the variable soft excess using data from Swift, XMM-Newton, and Chandra. Several models will be tested, ranging from simple blackbody fits to more advanced ones involving warm Comptonization and ionized reflection. The goal is to characterize source variability, compare nearby AGN, and assess data from X-ray catalogs for broader analysis in future projects.<\/div>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-0c6e954\" data-id=\"0c6e954\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-4ff378e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4ff378e\" data-element_type=\"section\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-7921587\" data-id=\"7921587\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-da516fd elementor-view-stacked elementor-widget-mobile__width-initial elementor-shape-circle elementor-widget elementor-widget-icon\" data-id=\"da516fd\" data-element_type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<i aria-hidden=\"true\" class=\"hm hm-team-member\"><\/i>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-0835835\" data-id=\"0835835\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-615c2b6 elementor-widget elementor-widget-heading\" data-id=\"615c2b6\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h6 class=\"elementor-heading-title elementor-size-default\">People<\/h6>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-cbb5754 elementor-widget__width-initial dark-background-links elementor-widget elementor-widget-text-editor\" data-id=\"cbb5754\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul><li style=\"text-align: left;\"><a href=\"https:\/\/astronomia.udp.cl\/en\/researcher\/lorena-hernandez-garcia\/\" target=\"_blank\" rel=\"noopener\">Dr. Lorena Hern\u00e1ndez-Garc\u00eda<\/a><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-82117ae elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"82117ae\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;_ha_eqh_enable&quot;:&quot;yes&quot;,&quot;_ha_eqh_to&quot;:&quot;widget&quot;,&quot;_ha_eqh_disable_on_tablet&quot;:&quot;no&quot;,&quot;_ha_eqh_disable_on_mobile&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-901a4fe\" data-id=\"901a4fe\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d7cce18   elementor-widget__width-initial premium-modal-dismissible-yes elementor-widget elementor-widget-premium-addon-modal-box\" data-id=\"d7cce18\" data-element_type=\"widget\" data-settings=\"{&quot;premium_modal_box_animation&quot;:&quot;zoomIn&quot;}\" data-widget_type=\"premium-addon-modal-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\n\t\t<div class=\"premium-modal-box-container\" data-settings=\"{&quot;trigger&quot;:&quot;text&quot;,&quot;show_on_exit&quot;:false}\">\n\t\t\t<div class=\"premium-modal-trigger-container\">\n\t\t\t\t\t\t\t\t\t<span data-toggle=\"premium-modal\" data-target=\"#premium-modal-d7cce18\" class=\"premium-modal-trigger-text\">\n\t\t\t\t\t\t<div >\n\t\t\t\t\t\t\tCharacterizing Color Variations in Changing-Look AGN\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t<\/div>\n\n\t\t\t<div id=\"premium-modal-d7cce18\" class=\"premium-modal-box-modal\"\n\t\t\trole=\"dialog\"\n\t\t\tstyle=\"display: none\"\n\t\t\t>\n\t\t\t\t<div class=\"premium-modal-box-modal-dialog\" data-delay-animation=\"\" data-modal-animation=\"zoomIn animated-\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-modal-box-modal-header\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"premium-modal-box-modal-title\">\n\t\t\t\t\t\t\t\t\tCharacterizing Color Variations in Changing-Look AGN\t\t\t\t\t\t\t\t<\/h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-modal-box-close-button-container\">\n\t\t\t\t\t\t\t\t\t<button type=\"button\" class=\"premium-modal-box-modal-close\" data-dismiss=\"premium-modal\">&times;<\/button>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"premium-modal-box-modal-body\">\n\t\t\t\t\t\t<div id=\"message-list_1755796404.284259\" class=\"c-virtual_list__item\" tabindex=\"0\" role=\"listitem\" aria-setsize=\"-1\" data-qa=\"virtual-list-item\" data-item-key=\"1755796404.284259\"><div class=\"c-message_kit__background c-message_kit__background--hovered p-message_pane_message__message c-message_kit__message\" role=\"presentation\" data-qa=\"message_container\" data-qa-unprocessed=\"false\" data-qa-placeholder=\"false\"><div class=\"c-message_kit__hover c-message_kit__hover--hovered\" role=\"document\" aria-roledescription=\"message\" data-qa-hover=\"true\"><div class=\"c-message_kit__actions c-message_kit__actions--default\"><div class=\"c-message_kit__gutter\"><div class=\"c-message_kit__gutter__right\" role=\"presentation\" data-qa=\"message_content\"><div class=\"c-message_kit__blocks c-message_kit__blocks--rich_text\"><div class=\"c-message__message_blocks c-message__message_blocks--rich_text\" data-qa=\"message-text\"><div class=\"p-block_kit_renderer\" data-qa=\"block-kit-renderer\"><div class=\"p-block_kit_renderer__block_wrapper p-block_kit_renderer__block_wrapper--first\"><div class=\"p-rich_text_block\" dir=\"auto\"><div class=\"p-rich_text_section\" style=\"text-align: left;\">Changing-look AGN (CL AGN) are active galactic nuclei that show rapid transitions in their spectral properties, often accompanied by significant changes in brightness and color. This project aims to characterize the color variability of CL AGN and compare it with that of typical AGN to identify distinctive patterns. The first stage will involve analyzing publicly available multi-band light curves from the Zwicky Transient Facility (ZTF). Based on this analysis, a machine learning model will be developed to identify CL AGN candidates using color-based features. In the future, this approach will be applied to upcoming data from the Vera C. Rubin Observatory (LSST), enabling large-scale selection of CL AGN through their color evolution.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-979b27a\" data-id=\"979b27a\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-5319bc2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5319bc2\" data-element_type=\"section\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-96d78aa\" data-id=\"96d78aa\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e0a71c4 elementor-view-stacked elementor-widget-mobile__width-initial elementor-shape-circle elementor-widget elementor-widget-icon\" data-id=\"e0a71c4\" data-element_type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<i aria-hidden=\"true\" class=\"hm hm-team-member\"><\/i>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-3b808e9\" data-id=\"3b808e9\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-aeeb16e elementor-widget elementor-widget-heading\" data-id=\"aeeb16e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h6 class=\"elementor-heading-title elementor-size-default\">People<\/h6>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-20aa416 elementor-widget__width-initial dark-background-links elementor-widget elementor-widget-text-editor\" data-id=\"20aa416\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul><li style=\"text-align: left;\"><a href=\"https:\/\/astronomia.udp.cl\/en\/researcher\/lorena-hernandez-garcia\/\" target=\"_blank\" rel=\"noopener\">Dr. Lorena Hern\u00e1ndez-Garc\u00eda<\/a><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-17f446c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"17f446c\" data-element_type=\"section\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-0a98e8d\" data-id=\"0a98e8d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d1bfa39 elementor-widget elementor-widget-spacer\" data-id=\"d1bfa39\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.20.0 - 13-03-2024 *\/\n.elementor-column .elementor-spacer-inner{height:var(--spacer-size)}.e-con{--container-widget-width:100%}.e-con-inner>.elementor-widget-spacer,.e-con>.elementor-widget-spacer{width:var(--container-widget-width,var(--spacer-size));--align-self:var(--container-widget-align-self,initial);--flex-shrink:0}.e-con-inner>.elementor-widget-spacer>.elementor-widget-container,.e-con>.elementor-widget-spacer>.elementor-widget-container{height:100%;width:100%}.e-con-inner>.elementor-widget-spacer>.elementor-widget-container>.elementor-spacer,.e-con>.elementor-widget-spacer>.elementor-widget-container>.elementor-spacer{height:100%}.e-con-inner>.elementor-widget-spacer>.elementor-widget-container>.elementor-spacer>.elementor-spacer-inner,.e-con>.elementor-widget-spacer>.elementor-widget-container>.elementor-spacer>.elementor-spacer-inner{height:var(--container-widget-height,var(--spacer-size))}.e-con-inner>.elementor-widget-spacer.elementor-widget-empty,.e-con>.elementor-widget-spacer.elementor-widget-empty{position:relative;min-height:22px;min-width:22px}.e-con-inner>.elementor-widget-spacer.elementor-widget-empty .elementor-widget-empty-icon,.e-con>.elementor-widget-spacer.elementor-widget-empty .elementor-widget-empty-icon{position:absolute;top:0;bottom:0;left:0;right:0;margin:auto;padding:0;width:22px;height:22px}<\/style>\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>AGN and Black Holes Research Projects Optimization of AGN photometric redshifts for LSST Optimization of AGN photometric redshifts for LSST &times; The Rubin Observatory Legacy Survey of Space and Time (LSST) will observe 20,000 square degrees repeatedly throughout 10 years in 6 photometric bands (ugrizy), allowing us to study the variable universe with unprecedented detail, &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/astronomia.udp.cl\/en\/research\/areas\/agn-and-black-holes\/\"> <span class=\"screen-reader-text\">AGN and Black Holes<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"parent":737,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"acf":[],"_links":{"self":[{"href":"https:\/\/astronomia.udp.cl\/en\/wp-json\/wp\/v2\/pages\/6772"}],"collection":[{"href":"https:\/\/astronomia.udp.cl\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/astronomia.udp.cl\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/astronomia.udp.cl\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/astronomia.udp.cl\/en\/wp-json\/wp\/v2\/comments?post=6772"}],"version-history":[{"count":22,"href":"https:\/\/astronomia.udp.cl\/en\/wp-json\/wp\/v2\/pages\/6772\/revisions"}],"predecessor-version":[{"id":7952,"href":"https:\/\/astronomia.udp.cl\/en\/wp-json\/wp\/v2\/pages\/6772\/revisions\/7952"}],"up":[{"embeddable":true,"href":"https:\/\/astronomia.udp.cl\/en\/wp-json\/wp\/v2\/pages\/737"}],"wp:attachment":[{"href":"https:\/\/astronomia.udp.cl\/en\/wp-json\/wp\/v2\/media?parent=6772"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}