Early re-brightening of the afterglow of GRB 050525a

被引：34

作者：

Klotz, A

Boër, M

Atteia, JL

Stratta, G

Behrend, R

Malacrino, F

Damerdji, Y

机构：

[1] CNRS, UPS, CESR, Observ Midi Pyrenees, F-31028 Toulouse, France

[2] Observ Haute Provence, F-04870 St Michel, France

[3] CNRS, UPS, Observ Midi Pyrenees, LAT, F-31400 Toulouse, France

[4] Observ Geneva, CH-1290 Sauverny, Switzerland

来源：

ASTRONOMY & ASTROPHYSICS | 2005年 / 439卷 / 03期

关键词：

gamma-ray; bursts;

D O I：

10.1051/0004-6361:200500153

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present time resolved optical data acquired by the TAROT automated observatory on the afterglow of GRB 050525a from 6 to 136 min after the GRB. We find evidence for a rapid re-brightening of 0.65 mag of the afterglow at similar to 33 min after the GRB. The decay slope alpha is 11.14 +/- 0.07 in the first part and is 11.23 +/- 0.27 after the re-brightening event. The afterglow of GRB 050525a is the third known afterglow that exhibits a re-brightening event beginning at 0.01 - 0.02 day in the rest time frame.

引用

页码：L35 / L38

页数：4

共 26 条

[1]

BAND D, 2005, GCN CIRC, P3466

[2] Neutron-fed afterglows of gamma-ray bursts [J].

Beloborodov, AM .

ASTROPHYSICAL JOURNAL, 2003, 585 (01) :L19-L22

[3] Energy injection episodes in gamma-ray bursts:: The light curves and polarization properties of GRB 0210041 [J].

Björnsson, G ;

Gudmundsson, EH ;

Jóhannesson, G .

ASTROPHYSICAL JOURNAL, 2004, 615 (02) :L77-L80

[4] An infrared flash contemporaneous with the γ-rays of GRB 041219a [J].

Blake, CH ;

Bloom, JS ;

Starr, DL ;

Falco, EE ;

Skrutskie, M ;

Fenimore, EE ;

Duchêne, G ;

Szentgyorgyi, A ;

Hornstein, S ;

Prochaska, JX ;

McCabe, C ;

Ghez, A ;

Konopacky, Q ;

Stapelfeldt, K ;

Hurley, K ;

Campbell, R ;

Kassis, M ;

Chaffee, F ;

Gehrels, N ;

Barthelmy, S ;

Cummings, JR ;

Hullinger, D ;

Krimm, HA ;

Markwardt, CB ;

Palmer, D ;

Parsons, A ;

McLean, K ;

Tueller, J .

NATURE, 2005, 435 (7039) :181-184

[5] The TAROT observatory data management [J].

Bringer, M ;

Boër, M ;

Peignot, C ;

Fontan, G ;

Merce, C .

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1999, 138 (03) :581-582

[6]

BRINGER M, 2001, EXPER ASTROPHYS, V12, P34

[7]

Foley R. J., 2005, GCN, P3483

[8] Early optical emission from the γ-ray burst of 4 October 2002 [J].

Fox, DW ;

Yost, S ;

Kulkarni, SR ;

Torii, K ;

Kato, T ;

Yamaoka, H ;

Sako, M ;

Harrison, FA ;

Sari, R ;

Price, PA ;

Berger, E ;

Soderberg, AM ;

Djorgovski, SG ;

Barth, AJ ;

Pravdo, SH ;

Frail, DA ;

Gal-Yam, A ;

Lipkin, Y ;

Mauch, T ;

Harrison, C ;

Buttery, H .

NATURE, 2003, 422 (6929) :284-286

[9] Discovery of early optical emission from GRB 021211 [J].

Fox, DW ;

Price, PA ;

Soderberg, AM ;

Berger, E ;

Kulkarni, SR ;

Sari, R ;

Frail, DA ;

Harrison, FA ;

Yost, SA ;

Matthews, K ;

Peterson, BA ;

Tanaka, I ;

Christiansen, J ;

Moriarty-Schieven, GH .

ASTROPHYSICAL JOURNAL, 2003, 586 (01) :L5-L8

[10]

GOLENETSKII S, 2005, GCN CIRC, P3474

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