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A NICER look at thermonuclear X-ray bursts from Aql X-1
Tolga Guver, Tugba Boztepe, David R. Ballantyne +8
We present spectral and temporal properties of all the thermonuclear X-ray bursts observed from Aql X-1 by the Neutron Star Interior and Composition Explorer (NICER) between 2017 J…
Tracking the evolution of the accretion flow in MAXI J1820+070 during its hard state with the JED-SAD model
A. Marino, S. Barnier, P. O. Petrucci +10
X-ray binaries in outburst typically show two canonical X-ray spectral states, i.e. hard and soft states, in which the physical properties of the accretion flow and of the jet are…
The Radius of PSR J0740+6620 from NICER and XMM-Newton Data
M. C. Miller, F. K. Lamb, A. J. Dittmann +25
PSR J07406620 has a gravitational mass of , which is the highest reliably determined mass of any neutron star. As a result, a measurement of its radius wil…
NICER Detection of Thermal X-ray Pulsations from the Massive Millisecond Pulsars PSR J0740+6620 and PSR J1614-2230
M. T. Wolff, S. Guillot, S. Bogdanov +11
We report the detection of X-ray pulsations from the rotation-powered millisecond-period pulsars PSR J0740+6620 and PSR J1614-2230, two of the most massive neutron stars known, usi…
A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy
Thomas E. Riley, Anna L. Watts, Paul S. Ray +27
We report on Bayesian estimation of the radius, mass, and hot surface regions of the massive millisecond pulsar PSR J07406620, conditional on pulse-profile modeling of Neutron S…
Constraining the Neutron Star Mass--Radius Relation and Dense Matter Equation of State with NICER. III. Model Description and Verification of Parameter Estimation Codes
Slavko Bogdanov, Alexander J. Dittmann, Wynn C. G. Ho +16
We describe the X-ray pulse profile models we use, and how we use them, to analyze Neutron Star Interior Composition Explorer (NICER) observations of rotation-powered millisecond p…