{"id":8940,"date":"2025-09-25T10:49:02","date_gmt":"2025-09-25T15:49:02","guid":{"rendered":"https:\/\/uwm.edu\/physics\/?post_type=tribe_events&p=8940"},"modified":"2025-11-13T15:17:06","modified_gmt":"2025-11-13T21:17:06","slug":"cgca-seminar-dr-sharon-morsink","status":"publish","type":"tribe_events","link":"https:\/\/uwm.edu\/physics\/event\/cgca-seminar-dr-sharon-morsink\/","title":{"rendered":"CGCA Seminar – Prof. Sharon Morsink"},"content":{"rendered":"

The masses and radii of the neutron stars observed by NICER<\/h2>\n

Prof. Sharon Morsink
\nUniversity of Alberta<\/p>\n

Neutron stars are the densest known gravitationally-stable objects in the Universe. Their strong gravitational fields, rapid rotation rates, and supra-nuclear central densities allow for a fascinating interplay between general relativistic effects and nuclear physics theory. Pulse-profile modeling is a technique that uses the gravitationally-lensed X-ray flux emitted from hot spots on the neutron star’s surface to infer its mass and radius. General relativity is a crucial ingredient in this analysis. The Neutron Star Interior Composition ExploreR (NICER) is a NASA X-ray telescope mounted on the International Space Station. NICER is a timing instrument designed to make the measurements required to implement pulse-profile modelling. In this talk, I will give an overview of how NICER data is used to infer a neutron star’s radius (and its mass), along with the latest results and future observations of other pulsars.<\/p>\n","protected":false},"excerpt":{"rendered":"

The masses and radii of the neutron stars observed by NICER<\/strong>
\nProf. Sharon Morsink
\nUniversity of Alberta<\/p>\n

Neutron stars are the densest known gravitationally-stable objects in the Universe. Their strong gravitational fields, rapid rotation rates, and supra-nuclear central densities allow for a fascinating interplay between general relativistic effects and nuclear physics theory. Pulse-profile modeling is a technique that uses the gravitationally-lensed X-ray flux emitted from hot spots on the neutron star’s surface to infer its mass and radius. General relativity is a crucial ingredient in this analysis.<\/p>\n","protected":false},"author":9647,"featured_media":0,"template":"","meta":{"_acf_changed":false,"_tribe_events_status":"","_tribe_events_status_reason":"","_tribe_events_is_hybrid":"","_tribe_events_is_virtual":"","_tribe_events_virtual_video_source":"","_tribe_events_virtual_embed_video":"","_tribe_events_virtual_linked_button_text":"","_tribe_events_virtual_linked_button":"","_tribe_events_virtual_show_embed_at":"","_tribe_events_virtual_show_embed_to":[],"_tribe_events_virtual_show_on_event":"","_tribe_events_virtual_show_on_views":"","_tribe_events_virtual_url":"","footnotes":"","uwm_wg_additional_authors":[]},"tags":[],"tribe_events_cat":[46],"class_list":["post-8940","tribe_events","type-tribe_events","status-publish","hentry","tribe_events_cat-cgca-seminars","cat_cgca-seminars"],"yoast_head":"\nPhysics & Astronomy<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/uwm.edu\/physics\/event\/cgca-seminar-dr-sharon-morsink\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CGCA Seminar - Prof. Sharon Morsink\" \/>\n<meta property=\"og:description\" content=\"The masses and radii of the neutron stars observed by NICER Prof. Sharon Morsink University of Alberta Neutron stars are the densest known gravitationally-stable objects in the Universe. Their strong gravitational fields, rapid rotation rates, and supra-nuclear central densities allow for a fascinating interplay between general relativistic effects and nuclear physics theory. Pulse-profile modeling is a technique that uses the gravitationally-lensed X-ray flux emitted from hot spots on the neutron star's surface to infer its mass and radius. 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