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7 papers · 2 filters
X-Ray Flares of Gamma-Ray Bursts: Quakes of Solid Quark Stars?
Renxin Xu, Enwei Liang
We propose a star-quake model to understand X-ray flares of both long and short Gamma-ray bursts (GRBs) in a solid quark star regime. Two kinds of central engines for GRBs are avai…
Two types of softening detected in X-ray afterglows of Swift bursts: internal and external shock origins?
Y. -P. Qin, A. C. Gupta, J. H. Fan +1
The softening process observed in the steep decay phase of early X-ray afterglows of Swift bursts has remained a puzzle since its discovery. The softening process can also be obser…
Spectral hardness evolution characteristics of tracking Gamma-ray Burst pulses
Z. Y. Peng, L. Ma, R. J. Lu +3
Employing a sample presented by Kaneko et al. (2006) and Kocevski et al. (2003), we select 42 individual tracking pulses (here we defined tracking as the cases in which the hardnes…
Curvature Effect of a Non-Power-Law Spectrum and Spectral Evolution of GRB X-Ray Tails
Bin-Bin Zhang, Bing Zhang, En-Wei Liang +1
The apparent spectral evolution observed in the steep decay phase of many GRB early afterglows raises a great concern of the high-latitude "curvature effect" interpretation of this…
Relationship between pulse width and energy in GRB 060124: from X-ray to gamma-ray bands
Fu-Wen Zhang, Yi-Ping Qin
GRB 060124 is the first event that both prompt and afterglow emission were observed simultaneously by the three \emph{Swift} instruments. Its main peak also triggered Konus-Wind an…
The full curvature effect expected in early X-ray afterglow emission of gamma-ray bursts
Y. -P. Qin
We explore the influence of the full curvature effect on the flux of early X-ray afterglow of gamma-ray bursts (GRBs) in cases when the spectrum of the intrinsic emission is a powe…