University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Tuesday, February 11th 2020
2:30 pm:
Nuclear Physics Seminar in Tate 301-20
Speaker: Sophia Han, Ohio University/UC Berkeley
Subject: Constraining phase transition scenarios with neutron star observables

There is as yet no firm evidence for quark matter cores in neutron stars. This is mainly because of the lack of direct probes of the opaque neutron star interior and the lack of clear qualitative difference between hadronic and quark phases. The detection of GW170817 along with the measurement of its tidal parameters has offered a first example of how the arrival of direct gravitational waves can be used to constrain the equation of state (EoS) of ultra-dense matter.We shall discuss taking into account currently available information, how to reveal possible phase transitions in neutron stars: the steadily growing body of astrophysical data and supported laboratory experiments should eventually allow us to narrow down the options by combining these various observations. We survey the proposed signatures of exotic matter and emphasize the importance of data from neutron star mergers.

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