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Discovery and Long-term Broadband X-ray monitoring of Galactic Black Hole Candidate MAXI J1803-298
Megumi Shidatsu, Kohei Kobayashi, Hitoshi Negoro +11
We report the results from the broad-band X-ray monitoring of the new Galactic black hole candidate MAXI J1803298 with the MAXI/GSC and Swift/BAT during its outburst. After the…
Enhanced X-ray Emission Coinciding with Giant Radio Pulses from the Crab Pulsar
Teruaki Enoto, Toshio Terasawa, Shota Kisaka +34
Giant radio pulses (GRPs) are sporadic bursts emitted by some pulsars, lasting a few microseconds. GRPs are hundreds to thousands of times brighter than regular pulses from these s…
PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter
M. C. Miller, F. K. Lamb, A. J. Dittmann +18
Neutron stars are not only of astrophysical interest, but are also of great interest to nuclear physicists, because their attributes can be used to determine the properties of the…
Discovery of Soft X-ray Pulsations from PSR J1231-1411 using NICER
Paul S. Ray, Sebastien Guillot, Scott M. Ransom +10
We report the discovery of soft X-ray pulsations from the nearby millisecond pulsar PSR J12311411 using NICER. The pulsed emission is characterized by a broad and asymmetric mai…
Detection of polarized gamma-ray emission from the Crab nebula with Hitomi Soft Gamma-ray Detector
Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +191
We present the results from the Hitomi Soft Gamma-ray Detector (SGD) observation of the Crab nebula. The main part of SGD is a Compton camera, which in addition to being a spectrom…
NICER Observes the Effects of an X-Ray Burst on the Accretion Environment in Aql X-1
L. Keek, Z. Arzoumanian, P. Bult +18
Accretion disks around neutron stars regularly undergo sudden strong irradiation by Type I X-ray bursts powered by unstable thermonuclear burning on the stellar surface. We investi…