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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
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SEQUENCE:5
UID:UW-Physics-Event-6816
DTSTART:20220201T200000Z
DTEND:20220201T210000Z
DTSTAMP:20260414T154051Z
LAST-MODIFIED:20220128T191410Z
LOCATION:https://berkeley.zoom.us/s/91230714547
SUMMARY:Properties of the neutron star crust: Quantifying and correlat
 ing uncertainties with improved nuclear physics.\, Network in Neutrino
 s\, Nuclear Astrophysics\, and Symmetries (N3AS) Seminar\, Jerome Marg
 ueron\, CNRS/IN2P3
DESCRIPTION:The understanding of neutron star (NS) properties from fun
 damental nuclear physics inputs requires the precise determination of 
 the relation between nuclear physics uncertainties and dense matter pr
 edictions. This became possible recently due to advances in theoretica
 l efforts to predict properties of nuclei and dense nuclear matter\, a
 nd advances in experimental nuclear physics that are now providing mor
 e stringent constraints. In addition\, recent observations of NS radii
  by NICER and tidal deformabilities by the LIGO-Virgo collaboration ha
 ve also reached the accuracy to better constrain the dense matter equa
 tion of state (EOS). These developments motivate the construction of m
 odels that can provide a unified description of the EOS of the crust a
 nd the core.
\n
\nFor this purpose we have employed the well-known com
 pressible liquid-drop model to correlate uncertainties associated with
  neutron star crust properties with theoretical estimates of the uncer
 tainties associated with the EOS of homogeneous neutron and nuclear ma
 tter. We also quantify the impact due to the finite size of nuclear cl
 usters in the crust. We find for instance that the finite-size effects
  impact the crust composition\, but have a negligible effect on the ne
 t isospin asymmetry in the crust\, which is largely determined by the 
 bulk properties. We also discuss the link between low density neutron 
 matter predictions from microscopic nuclear approaches and the crust p
 roperties. Finally by adopting a unified model to describe the crust a
 nd the core of NSs and disregarding phase transition in dense matter\,
  we tighten the correlation between their global properties such as th
 eir mass-radius relationship\, moment of inertia\, crust thickness\, a
 nd tidal deformability with uncertainties associated with the nuclear 
 Hamiltonians.
\nhttps://berkeley.zoom.us/s/91230714547
\n
URL:https://www.physics.wisc.edu/events/?id=6816
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