Proposed hard X-ray imaging and gamma ray burst studies for XTE

1982 ◽  
Author(s):  
J. E. Grindlay ◽  
S. S. Murray
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Burst ◽  
X Ray ◽  
X Ray Imaging

scholarly journals Gamma-ray burst studies with the Energetic X-ray Imaging Survey Telescope (EXIST)

1996 ◽  
Author(s):  
F. A. Harrison ◽  
J. E. Grindlay ◽  
N. Gehrels ◽  
C. J. Hailey ◽  
W. A. Mahoney ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Burst ◽  
X Ray ◽  
X Ray Imaging

scholarly journals Discovery of recombining plasma inside the extended gamma-ray supernova remnant HB9

2019 ◽  
Vol 489 (3) ◽  
pp. 4300-4310 ◽  
Author(s):  
A Sezer ◽  
T Ergin ◽  
R Yamazaki ◽  
H Sano ◽  
Y Fukui
Keyword(s):  
Supernova Remnant ◽  
Gamma Ray ◽  
Radio Continuum ◽  
Continuum Emission ◽  
Large Area ◽  
Imaging Spectrometer ◽  
X Ray ◽  
East Region ◽  
X Ray Imaging ◽  
Collisional Ionization

ABSTRACT We present the results from the Suzaku X-ray Imaging Spectrometer observation of the mixed-morphology supernova remnant (SNR) HB9 (G160.9+2.6). We discovered recombining plasma (RP) in the western Suzaku observation region and the spectra here are well described by a model having collisional ionization equilibrium (CIE) and RP components. On the other hand, the X-ray spectra from the eastern Suzaku observation region are best reproduced by the CIE and non-equilibrium ionization model. We discuss possible scenarios to explain the origin of the RP emission based on the observational properties and concluded that the rarefaction scenario is a possible explanation for the existence of RP. In addition, the gamma-ray emission morphology and spectrum within the energy range of 0.2–300 GeV are investigated using 10 yr of data from the Fermi Large Area Telescope (LAT). The gamma-ray morphology of HB9 is best described by the spatial template of radio continuum emission. The spectrum is well fit to a log-parabola function and its detection significance was found to be 25σ. Moreover, a new gamma-ray point source located just outside the south-east region of the SNR’s shell was detected with a significance of 6σ. We also investigated the archival H i and CO data and detected an expanding shell structure in the velocity range of $-10.5$ and $+1.8$ km s−1 that is coinciding with a region of gamma-ray enhancement at the southern rim of the HB9 shell.

scholarly journals Constraints on the late X-ray radiation from the low-energy gamma-ray burst of December 3, 2003: INTEGRAL data

2006 ◽  
Vol 32 (5) ◽  
pp. 297-301 ◽  
Author(s):  
S. Yu. Sazonov ◽  
A. A. Lutovinov ◽  
E. M. Churazov ◽  
R. A. Sunyaev
Keyword(s):  
Gamma Ray ◽  
Low Energy ◽  
Gamma Ray Burst ◽  
X Ray ◽  
Energy Gamma ◽  
Integral Data

X-ray and optical observations of the November 19, 1978 Gamma-Ray Burst source region

1981 ◽  
Vol 30 (1-4) ◽  
pp. 467-470 ◽  
Author(s):  
G. Pizzichini ◽  
J. Danziger ◽  
P. Grosb� ◽  
M. Tarenghi ◽  
T. L. Cline ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Source Region ◽  
Optical Observations ◽  
Burst Source ◽  
Gamma Ray Burst ◽  
X Ray

scholarly journals The termination shock of a magnetar wind: a possible origin of gamma-ray burst X-ray afterglow emission

2010 ◽  
Vol 518 ◽  
pp. A27 ◽  
Author(s):  
Z. Mao ◽  
Y. W. Yu ◽  
Z. G. Dai ◽  
C. M. Pi ◽  
X. P. Zheng
Keyword(s):  
Gamma Ray ◽  
Termination Shock ◽  
Gamma Ray Burst ◽  
X Ray

scholarly journals Evidence of X-Ray Plateaus Driven by the Magnetar Spindown Winds in Gamma-Ray Burst Afterglows

2021 ◽  
Vol 922 (2) ◽  
pp. 102
Author(s):  
Shu-Jin Hou ◽  
Shuang Du ◽  
Tong Liu ◽  
Hui-Jun Mu ◽  
Ren-Xin Xu
Keyword(s):  
Gamma Ray ◽  
Normal Component ◽  
Gamma Ray Bursts ◽  
Cutting Edge ◽  
Decay Phase ◽  
Gamma Ray Burst ◽  
X Ray ◽  
Central Engine

Abstract The central engine of gamma-ray bursts (GRBs) remains an open and cutting-edge topic in the era of multimessenger astrophysics. X-ray plateaus appear in some GRB afterglows, which are widely considered to originate from the spindown of magnetars. According to the stable magnetar scenario of GRBs, an X-ray plateau and a decay phase ∼t −2 should appear in X-ray afterglows. Meanwhile, the “normal” X-ray afterglow is produced by the external shock from a GRB fireball. We analyze the Neil Gehrels Swift GRB data, then find three gold samples that have an X-ray plateau and a decay phase ∼t −2 superimposed on the jet-driven normal component. Based on these features of the lightcurves, we argue that the magnetars should be the central engines of these three GRBs. Future joint multimessenger observations might further test this possibility, which can then be beneficial to constrain GRB physics.

scholarly journals The Absence of X-Ray Flashes from Nearby Galaxies and the Gamma-Ray Burst Distance Scale

1996 ◽  
Vol 466 ◽  
pp. 795 ◽  
Author(s):  
T. T. Hamilton ◽  
E. V. Gotthelf ◽  
D. J. Helfand
Keyword(s):  
Gamma Ray ◽  
Distance Scale ◽  
Gamma Ray Burst ◽  
X Ray ◽  
Nearby Galaxies
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