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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…
Spectropolarimetry and photometry of the early afterglow of the gamma-ray burst GRB191221B
D. A. H. Buckley, S. Bagnulo, R. J. Britto +27
We report on results of spectropolarimetry of the afterglow of the long gamma-ray burst GRB 191221B, obtained with SALT/RSS and VLT/FORS2, as well as photometry from two telescopes…
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…
LOFAR early-time search for coherent radio emission from Short GRB 181123B
A. Rowlinson, R. L. C. Starling, K. Gourdji +6
The mergers of two neutron stars are typically accompanied by broad-band electromagnetic emission from either a relativistic jet or a kilonova. It has also been long predicted that…
Radio Afterglows of Very High Energy Gamma-Ray Bursts 190829A and 180720B
L. Rhodes, A. J. van der Horst, R. Fender +12
We present high cadence multi-frequency radio observations of the long Gamma-Ray Burst (GRB) 190829A, which was detected at photon energies above 100 GeV by the High Energy Stereos…