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arxiv.org
A NICER view of PSR J1614$-$2230: a massive and compact millisecond pulsar
Using pulse profile modeling, we obtain the mass-radius measurement of a millisecond pulsar (MSP) with data from the Neutron Star Interior Composition ExploreR, XMM-Newton and the Chandra X-ray Observ...
Alexandra Witze @alexwitze.bsky.social
The Swift re-boost mission has failed. www.nasa.gov/news-release...
www.nasa.gov
arxiv.org
A NICER view of the millisecond pulsar PSR J2124$-$3358: evidence for a helium atmosphere
Pulse profile modeling has proven to be a powerful technique for determining the mass and radius of neutron stars. To date, this method has been applied to a handful of millisecond pulsars observed by...
arxiv.org
Pulse profile modelling of accreting millisecond pulsars with disc occultation and its impact on parameter inference
Pulse profile modelling is a relativistic ray-tracing technique used to infer neutron star mass, radius, and surface hotspot properties from X-ray pulsations. Pulse profile modelling has been widely a...
arxiv.org
A series of unfortunate events: CHIME/FRB misclassification of a Galactic pulsar as a periodic fast radio burst
In 2022, the CHIME/FRB Collaboration reported the detection of FRB 20191221A, an apparent fast radio burst exhibiting a significant periodicity of 217 ms. Recently, this event has been identified as a...
arxiv.org
Astrophysics equation of state inference with Bayesian chiral effective field theory uncertainties
We investigate Bayesian chiral effective field theory ($χ$EFT) uncertainties, which assign a statistical interpretation to equation of state (EOS) distributions near nuclear saturation density, n$_0$,...
arxiv.org
Pulse profile modelling of the 2024 outburst of the accreting millisecond pulsar SRGA J144459.2-604207
Pulse profile modelling via relativistic ray-tracing can constrain the system parameters of neutron stars, notably their mass and radius. Among these objects, accreting millisecond pulsars (AMPs) are ...
