TY - JOUR
T1 - Searching for phase transitions in neutron stars with modified Gaussian processes
AU - Mroczek, Debora
AU - Coleman Miller, M.
AU - Noronha-Hostler, Jacquelyn
AU - Yunes, Nicolas
N1 - D.M is supported by the National Science Foundation Graduate Research Fellowship Program under Grant No. DGE – 1746047, the Illinois Center for Advanced Studies of the Universe Graduate Fellowship, and the University of Illinois Graduate College Distinguished Fellowship. J.N.H, D.M., and N.Y. were supported in part by the National Science Foundation (NSF) within the framework of the MUSES collaboration, under grant number OAC2103680. J.N.H. acknowledges financial support from the US-DOE Nuclear Science Grant No. DESC0020633. M.C.M. was supported in part by NASA ADAP grant 80NSSC21K0649. N.Y. was supported in part by NSF Award PHYS-2207650. The authors also acknowledge support from the Illinois Campus Cluster, a computing resource that is operated by the Illinois Campus Cluster Program (ICCP) in conjunction with the National Center for Supercomputing Applications (NCSA), which is supported by funds from the University of Illinois at Urbana-Champaign.
PY - 2023
Y1 - 2023
N2 - Gaussian processes provide a promising framework by which to extrapolate the equation of state (EoS) of cold, catalyzed matter beyond 1 - 2 times nuclear saturation density. Here we discuss how to extend Gaussian processes to include nontrivial features in the speed of sound, such as bumps, kinks, and plateaus, which are predicted by nuclear models with exotic degrees of freedom. Using a fully Bayesian analysis incorporating measurements from X-ray sources, gravitational wave observations, and perturbative QCD results, we show that these features are compatible with current constraints and report on how the features affect the EoS posteriors.
AB - Gaussian processes provide a promising framework by which to extrapolate the equation of state (EoS) of cold, catalyzed matter beyond 1 - 2 times nuclear saturation density. Here we discuss how to extend Gaussian processes to include nontrivial features in the speed of sound, such as bumps, kinks, and plateaus, which are predicted by nuclear models with exotic degrees of freedom. Using a fully Bayesian analysis incorporating measurements from X-ray sources, gravitational wave observations, and perturbative QCD results, we show that these features are compatible with current constraints and report on how the features affect the EoS posteriors.
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U2 - 10.1088/1742-6596/2536/1/012006
DO - 10.1088/1742-6596/2536/1/012006
M3 - Conference article
AN - SCOPUS:85165711750
SN - 1742-6588
VL - 2536
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012006
T2 - 9th International Workshop Compact Stars in the QCD Phase Diagram: From RHIC to Astrophysics, Probing the Quark-Gluon Plasma, CSQCD 2022
Y2 - 1 August 2022 through 5 August 2022
ER -