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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…
Fermi/GBM View of the 2019 and 2020 Burst Active Episodes of SGR J1935+2154
Lin Lin, Ersin Gogus, Oliver J. Roberts +5
We present temporal and time-integrated spectral analyses of 148 bursts from the latest activation of SGR J1935+2154, observed with Fermi/GBM from October 4th 2019 through May 20th…
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…
A radiatively-quiet glitch and anti-glitch in the magnetar 1E 2259+586
G. Younes, P. S. Ray, M. G. Baring +5
We report on the timing and spectral properties of the soft X-ray emission from the magnetar 1E 2259+586 from January 2013, months after the detection of an anti-glitch, u…
Broadband X-ray Burst Spectroscopy of the FRB-Emitting Galactic Magnetar
G. Younes, M. G. Baring, C. Kouveliotou +22
Magnetars are young, magnetically-powered neutron stars possessing the strongest magnetic fields in the Universe. Fast Radio Bursts (FRBs) are extremely intense millisecond-long ra…
Burst properties of the most recurring transient magnetar SGR J1935+2154
Lin Lin, Ersin Gogus, Oliver J. Roberts +4
We present timing and time-integrated spectral analysis of 127 bursts from SGR J1935+2154. These bursts were observed with the Gamma-ray Burst Monitor on the Fermi Gamma-ray Space…
Simultaneous magnetic polar cap heating during a flaring episode from the magnetar 1RXS J170849.0-400910
George Younes, Matthew G. Baring, Chryssa Kouveliotou +3
During a pointed 2018 NuSTAR observation, we detected a flare with a 2.2 hour duration from the magnetar 1RXS J170849.0400910. The flare, which rose in seconds to a max…