Fall 2023 Physics Colloquium:- The Golden Age of Neutron Stars
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. The speaker 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 Neutron star Interior Composition ExploreR(NICER) telescope; and past and future observations of binary neutron star mergers, through gravitational waves as well as across the electromagnetic spectrum. Theoretically an understanding is emerging in Quantum ChromoDynamics(QCD) of how nuclear matter can turn into deconfined quark matter in the interior, and be capable of supporting heavy neutron stars, which the speaker will illustrate with a discussion of modern quark-hadron crossover equations of state.
地點：香港大學 莊月明物理樓* CYPP3, LG1/F
講者：Prof. Gordon BAYM (University of Illinois, US)
*Chong Yuet Ming Physics Building