Is the afterglow of gamma-ray burst GRB 021004 unusual?

被引：9

作者：

Dado, S ^{[1
]}

Dar, A

De Rújula, A

机构：

[1] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel

[2] Technion Israel Inst Technol, Space Res Inst, IL-32000 Haifa, Israel

[3] CERN, Div Theory, CH-1211 Geneva, Switzerland

来源：

ASTROPHYSICAL JOURNAL | 2003年 / 585卷 / 01期

关键词：

gamma rays : bursts;

D O I：

10.1086/374237

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The afterglow (AG) of gamma-ray burst GRB 021004 has been claimed to be unusual. In the cannonball (CB) model of GRBs, that is not the case. The very early AG's shape is, like for GRB 990123, a direct tracer of the expected circumburst density profile. The unprecedented precision of the data allows for the "resolution" of two CBs in the AG. These two CBs correspond to the two pulses in the GRB and to the two wide shoulders in the AG light curve. The smaller wiggles in the AG are, like for GRB 000301c and for GRB 970508, to be expected: they trace moderate deviations from a constant density interstellar medium. The observed evolution of the optical spectrum is that predicted in the CB model. The X-ray and radio emissions of GRB 021004 are also normal.

引用

页码：L15 / L18

页数：4

共 39 条

[1] BERGER E, 2002, 1613 GCN
[2] BERGER E, 2002, 1612 GCN
[3] BERSIER D, 2002, ASTROPH0211130
[4] BREMER M, 2002, 1590 GCN
[5] CHORNOCK R, 2002, 1605 GCN
[6] CHORNOCK R, 2002, 1754 GCN
[7] COVINO S, 2002, 1595 GCN
[8] COVINO S, 2002, 1622 GCN
[9] Is there a 1998bw-like supernova in the afterglow of gamma-ray burst 011121?
Dado, S
Dar, A
De Rújula, A
[J]. ASTROPHYSICAL JOURNAL, 2002, 572 (02) : L143 - L146
[10] The supernova associated with GRB 020405
Dado, S
Dar, A
De Rújula, A
[J]. ASTRONOMY & ASTROPHYSICS, 2002, 393 (01) : L25 - L28

← 1 2 3 4 →