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An updated mass-radius analysis of the 2017-2018 NICER data set of PSR J0030+0451
Serena Vinciguerra, Tuomo Salmi, Anna L. Watts +11
In 2019 the NICER collaboration published the first mass and radius inferred for PSR J0030+0451, thanks to NICER observations, and consequent constraints on the equation of state c…
X-PSI Parameter Recovery for Temperature Map Configurations Inspired by PSR J0030+0451
Serena Vinciguerra, Tuomo Salmi, Anna L. Watts +3
In the last few years, the NICER collaboration has provided mass and radius inferences, via pulse profile modeling, for two pulsars: PSR J0030+0451 and PSR J0740+6620. Given the im…
Pulse Profile Modelling of Thermonuclear Burst Oscillations II: Handling variability
Yves Kini, Tuomo Salmi, Serena Vinciguerra +6
Pulse profile modelling is a relativistic ray-tracing technique that can be used to infer masses, radii and geometric parameters of neutron stars. In a previous study, we looked at…
Atmospheric Effects on Neutron Star Parameter Constraints with NICER
Tuomo Salmi, Serena Vinciguerra, Devarshi Choudhury +7
We present an analysis of the effects of uncertainties in the atmosphere models on the radius, mass, and other neutron star parameter constraints for the NICER observations of rota…
Pulse Profile Modeling of Thermonuclear Burst Oscillations I: The Effect of Neglecting Variability
Yves Kini, Tuomo Salmi, Anna L. Watts +6
We study the effects of the time-variable properties of thermonuclear X-ray bursts on modeling their millisecond-period burst oscillations. We apply the pulse profile modeling tech…
Constraining a relativistic mean field model using neutron star mass-radius measurements I: Nucleonic models
Chun Huang, Geert Raaijmakers, Anna L. Watts +2
Measurements of neutron star mass and radius or tidal deformability deliver unique insight into the equation of state (EOS) of cold dense matter. EOS inference is very often done u…