{"id":1157,"date":"2023-09-14T18:59:01","date_gmt":"2023-09-14T18:59:01","guid":{"rendered":"https:\/\/astronomia.bedigital.cl\/?post_type=researcher&#038;p=1157"},"modified":"2025-08-21T03:43:39","modified_gmt":"2025-08-21T03:43:39","slug":"tatevik-mkrtchyan","status":"publish","type":"researcher","link":"https:\/\/astronomia.udp.cl\/en\/researcher\/tatevik-mkrtchyan\/","title":{"rendered":"Tatevik Mkrtchyan"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-3\">\n<div class=\"wp-block-column profile-column is-layout-flow\">\n<figure class=\"wp-block-image size-large has-custom-border is-style-rounded profile-photo\"><img fetchpriority=\"high\" decoding=\"async\" width=\"683\" height=\"1024\" src=\"https:\/\/astronomia.udp.cl\/wp-content\/uploads\/2025\/06\/017A3025UDP-683x1024.jpg\" alt=\"\" class=\"wp-image-6066\" style=\"border-radius:10px\" srcset=\"https:\/\/astronomia.udp.cl\/wp-content\/uploads\/2025\/06\/017A3025UDP-683x1024.jpg 683w, https:\/\/astronomia.udp.cl\/wp-content\/uploads\/2025\/06\/017A3025UDP-200x300.jpg 200w, https:\/\/astronomia.udp.cl\/wp-content\/uploads\/2025\/06\/017A3025UDP-768x1152.jpg 768w, https:\/\/astronomia.udp.cl\/wp-content\/uploads\/2025\/06\/017A3025UDP-1024x1536.jpg 1024w, https:\/\/astronomia.udp.cl\/wp-content\/uploads\/2025\/06\/017A3025UDP-1365x2048.jpg 1365w, https:\/\/astronomia.udp.cl\/wp-content\/uploads\/2025\/06\/017A3025UDP-8x12.jpg 8w, https:\/\/astronomia.udp.cl\/wp-content\/uploads\/2025\/06\/017A3025UDP-scaled.jpg 1707w\" sizes=\"(max-width: 683px) 100vw, 683px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow\" style=\"flex-basis:55%\">\n<h2 class=\"wp-block-heading\">Tatevik Mkrtchyan<\/h2>\n\n\n\n<h4 class=\"wp-block-heading\">PhD student<\/h4>\n\n\n\n<p>I am a PhD student studying Active Galactic Nuclei (AGN) across cosmic time under the supervision of Dr. Chiara Mazzucchelli. I am interested in identifying AGN through Spectral Energy Distribution (SED) fitting, studying the Circumgalactic Medium around high-redshift quasars, and LSST AGN-science.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Projects<\/h5>\n\n\n\n<ul>\n<li>During my studies, I developed a method to select high-redshift quasar candidates using custom-made SED fitting code (available on my GitHub (<a href=\"https:\/\/github.com\/dathevik\/qso-bd-selection\">https:\/\/github.com\/dathevik\/qso-bd-selection<\/a>)) for the 4MOST Chilean AGN\/Galaxy Evolution Survey (ChANGES). This resulted in selecting around 3,000 high-redshift quasar candidates that 4MOST will observe.<\/li>\n\n\n\n<li>My second project focuses on quasars with powerful radio jets at z&gt;3.6, using VLT\/MUSE data. I have completed the data reduction and analysis, investigating Lyman Alpha Halos (LAHs) and comparing them to those in similar redshift quasars without strong radio jets. We recover 8 new LAHs, suggesting larger fractions of such emission around radio-loud quasars than that observed around radio-quiet ones.<\/li>\n\n\n\n<li>Finally, I am involved in the LSST AGN Science Collaboration with Prof. Assef, developing methods to identify AGN photometric properties in future LSST datasets. This project includes creating a training set based on photometric and spectroscopic data from fields such as COSMOS.<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">Highlights<\/h5>\n\n\n\n<ul>\n<li>Scholarship after astrophysicist Viktor Hambardzumyan in 2020.<\/li>\n\n\n\n<li>Finalist of Falling Walls 2020 Science Engagement Breakthrough of the Year.<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">Publications<\/h5>\n\n\n\n<ul>\n<li>Mkrtchyan et. al 2025 (in prep.) <\/li>\n\n\n\n<li><a href=\"https:\/\/ui.adsabs.harvard.edu\/search\/filter_database_fq_database=AND&amp;filter_database_fq_database=((database%3Aastronomy%20OR%20database%3Aphysics))&amp;filter_database_fq_database=database%3A%22astronomy%22&amp;fq=%7B!type%3Daqp%20v%3D%24fq_database%7D&amp;fq_database=(((database%3Aastronomy%20OR%20database%3Aphysics))%20AND%20database%3A%22astronomy%22)&amp;p_=0&amp;q=author%3A%22Tatevik%20Mkrtchyan%22&amp;sort=date%20desc%2C%20bibcode%20desc\"><strong>NASA ADS<\/strong><\/a><\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">Extracurricular activities<\/h5>\n\n\n\n<p>I am deeply interested in the philosophy of science and education. I like playing the ukulele, singing, and recording covers. I am a board game enthusiast, mostly Euro-games and tabletop games like DnD. Finally, I love hiking and exploring nature.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Contact me<\/h5>\n\n\n\n<p>tatevik.mkrtchyan [at] mail.udp.cl<\/p>\n\n\n\n<p><a href=\"http:\/\/dathevik.com\">Personal website<\/a><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>PhD student, working with Chiara Mazzucchelli, studying AGN across cosmic time &#8211; including the identification of AGN through SED fitting, and exploring the CGM around high-redshift quasars.<\/p>\n","protected":false},"author":2,"featured_media":4800,"menu_order":0,"template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"default","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":""},"researcher-category":[256],"acf":[],"_links":{"self":[{"href":"https:\/\/astronomia.udp.cl\/en\/wp-json\/wp\/v2\/researcher\/1157"}],"collection":[{"href":"https:\/\/astronomia.udp.cl\/en\/wp-json\/wp\/v2\/researcher"}],"about":[{"href":"https:\/\/astronomia.udp.cl\/en\/wp-json\/wp\/v2\/types\/researcher"}],"author":[{"embeddable":true,"href":"https:\/\/astronomia.udp.cl\/en\/wp-json\/wp\/v2\/users\/2"}],"version-history":[{"count":6,"href":"https:\/\/astronomia.udp.cl\/en\/wp-json\/wp\/v2\/researcher\/1157\/revisions"}],"predecessor-version":[{"id":7903,"href":"https:\/\/astronomia.udp.cl\/en\/wp-json\/wp\/v2\/researcher\/1157\/revisions\/7903"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/astronomia.udp.cl\/en\/wp-json\/wp\/v2\/media\/4800"}],"wp:attachment":[{"href":"https:\/\/astronomia.udp.cl\/en\/wp-json\/wp\/v2\/media?parent=1157"}],"wp:term":[{"taxonomy":"researcher-category","embeddable":true,"href":"https:\/\/astronomia.udp.cl\/en\/wp-json\/wp\/v2\/researcher-category?post=1157"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}