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The X-ray bursts of XTE J1739-285: a NICER sample
Peter Bult, Diego Altamirano, Zaven Arzoumanian +10
In this work we report on observations with the Neutron Star Interior Composition Explorer of the known neutron star X-ray transient XTE J1739-285. We observed the source in 2020 F…
Persistent Emission Properties of SGR J1935+2154 During Its 2020 Active Episode
Ersin Gogus, Matthew G. Baring, Chryssa Kouveliotou +6
We present detailed spectral and temporal characteristics of the persistent X-ray emission of SGR J1935+2154 based on our XMM-Newton and Chandra observations taken in the aftermath…
Discovery of Thermonuclear Type-I X-ray Bursts from the X-ray binary MAXI J1807+132
A. C. Albayati, D. Altamirano, G. K. Jaisawal +13
MAXI J1807+132 is a low-mass X-ray binary (LMXB) first detected in outburst in 2017. Observations during the 2017 outburst did not allow for an unambiguous identification of the na…
The NICER View of the 2020 Burst Storm and Persistent Emission of SGR 1935+2154
George Younes, Tolga Guver, Chryssa Kouveliotou +12
We report on NICER observations of the Magnetar SGR~1935+2154, covering its 2020 burst storm and long-term persistent emission evolution up to days post outburst. During t…
NICER Observation of the Temporal and Spectral Evolution of Swift J1818.0-1607: a Missing Link between Magnetars and Rotation Powered Pulsars
Chin-Ping Hu, Beste Begicarslan, Tolga Guver +13
We report on the hard X-ray burst and the first ~100 days NICER monitoring of the soft X-ray temporal and spectral evolution of the newly-discovered magnetar Swift J1818.0-1607. Th…