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9 papers · 2 filters
A Study of the Gamma-Ray Burst Fundamental Plane
Maria Dainotti, Christian Gilbertson, Sergey Postnikov +2
A class of long gamma-ray bursts (GRBs) with a plateau phase in their X-ray afterglows obeys a three-dimensional (3D) relation (Dainotti et al. 2016), between the rest-frame time a…
Possible regular phenomena in EXO 2030+375
Eva Laplace, Tatehiro Mihara, Yuki Moritani +4
In the last 10 years, since its last giant outburst in 2006, regular X-ray outbursts (type I) were detected every periastron passage in the Be X-ray binary EXO 2030+375. Recently,…
X-ray Reflection and An Exceptionally Long Thermonuclear Helium Burst from IGR J17062-6143
L. Keek, W. Iwakiri, M. Serino +3
Thermonuclear X-ray bursts from accreting neutron stars power brief but strong irradiation of their surroundings, providing a unique way to study accretion physics. We analyze MAXI…
Maxi observations of long X-ray bursts
Motoko Serino, Wataru Iwakiri, Toru Tamagawa +5
We report nine long X-ray bursts from neutron stars, detected with Monitor of All-sky X-ray Image (MAXI). Some of these bursts lasted for hours, and hence are qualified as superbur…
Wide-Band Spectra of Giant Radio Pulses from the Crab Pulsar
Ryo Mikami, Katsuaki Asano, Shuta J. Tanaka +9
We present the results of the simultaneous observation of the giant radio pulses (GRPs) from the Crab pulsar at 0.3, 1.6, 2.2, 6.7, and 8.4 GHz with four telescopes in Japan. We ob…
Repetitive Patterns in Rapid Optical Variations in the Nearby Black-hole Binary V404 Cygni
Mariko Kimura, Keisuke Isogai, Taichi Kato +65
How black holes accrete surrounding matter is a fundamental, yet unsolved question in astrophysics. It is generally believed that matter is absorbed into black holes via accretion…