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Physics Colloquium: "The Golden Age of Neutron Stars"

Event Type
Seminar/Symposium
Sponsor
Department of Physics
Location
Loomis Lab 141 and via Zoom
Virtual
wifi event
Date
Sep 25, 2024   4:00 pm  
Speaker
Gordon Baym (UIUC)
Contact
Kelly Darr
E-Mail
khdarr@illinois.edu
Phone
217-300-7821
Views
85
Originating Calendar
Physics - Colloquium

Neutron stars were first posited in the early thirties, and discovered as pulsars in the late sixties; however we are only recently beginning to understand the matter they contain.  After a brief mention of neutron star history, I will describe the ongoing development of a consistent picture of the liquid interiors of neutron stars, now driven by ever increasing observations as well as theoretical advances. These include, in particular. observations of at least three heavy neutron stars of about 2.0 solar masses and higher; ongoing simultaneous inferences of masses and radii of neutron stars by the NICER telescope; and past and future observations of binary neutron star mergers, through gravitational waves as well as across the electromagnetic spectrum.  I will also discuss pulsar timing arrays to detect very long wavelength gravitational waves, a remarkable role for neutron stars. Theoretically an understanding is emerging in QCD of how nuclear matter can turn into deconfined quark matter in the interior, and be capable of supporting heavy neutron stars, which I will illustrate with a discussion of modern quark-hadron crossover equations of state.

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