2007ApJ...669.1115S

Query : 2007ApJ...669.1115S

2007ApJ...669.1115S - Astrophys. J., 669, 1115-1129 (2007/November-2)

Evidence of exponential decay emission in the Swift gamma-ray bursts.

SAKAMOTO T., HILL J.E., YAMAZAKI R., ANGELINI L., KRIMM H.A., SATO G., SWINDELL S., TAKAMI K. and OSBORNE J.P.

Abstract (from CDS):

We present a systematic study of the steep decay emission from gamma-ray bursts (GRBs) observed by the Swift X-Ray Telescope (XRT). In contrast to the analysis described in recent literature, we produce composite Burst Alert Telescope (BAT) and XRT light curves by extrapolating the XRT data (2-10 keV) into the BAT energy range (15-25 keV) rather than extrapolating the BAT data into the XRT energy band (0.3-10 keV). Based on the fits to the composite light curves, we have confirmed the existence of an exponential decay component which smoothly connects the BAT prompt data to the XRT steep decay for several GRBs. We also find that the XRT steep decay for some of the bursts can be well fit by a combination of a power law with an exponential decay model. We discuss this exponential component within the framework of both the internal and the external shock model.

Abstract Copyright: ∼

Journal keyword(s): Gamma Rays: Bursts

Simbad objects: 24

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Number of rows : 24
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 GRB 060202 gB 02 23 22.940 +38 23 03.70           ~ 102 0
2 GRB 060306 gB 02 44 22.830 -02 08 55.00           ~ 119 0
3 GRB 060211A gB 03 53 32.600 +21 29 19.20           ~ 53 0
4 GRB 980923 gB 05 07.8 -80 36           ~ 51 0
5 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
6 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
7 GRB 060427 gB 08 17 03.910 +62 40 16.50           ~ 49 0
8 GRB 050319 gB 10 16 47.900 +43 32 53.80   18.02 17.01     ~ 274 0
9 GRB 050219A gB 11 05 38.990 -40 41 03.00           ~ 97 0
10 GRB 050915B gB 14 36 25.890 -67 24 33.21           ~ 56 0
11 GRB 060428B gB 15 41 25.570 +62 01 28.93 20.64 20.62 19.50     ~ 71 0
12 GRB 060418 gB 15 45 42.600 -03 38 20.00 15.73 16.19 14.98     ~ 389 0
13 V* V818 Sco LXB 16 19 55.0692669024 -15 38 25.017666540 11.60 12.40 11.1     Oev 1730 0
14 GRB 050814 gB 17 36 45.390 +46 20 21.60           ~ 166 0
15 GRB 050126 gB 18 32 27.22 +42 22 14.2           ~ 129 0
16 GRB 060109 gB 18 50 43.650 +31 59 26.40           ~ 52 0
17 GRB 060111B gB 19 05 42.480 +70 22 33.60     17.55     ~ 92 1
18 GRB 050315 gB 20 25 54.100 -42 36 02.19           ~ 225 0
19 GRB 060607 gB 21 58 50.400 -22 29 46.70 18.49 16.67 15.09     ~ 318 0
20 GRB 051109A gB 22 01 15.320 +40 49 23.70   20.09 20.14     ~ 190 0
21 GRB 050820A gB 22 29 38.110 +19 33 37.10 18.33 19.00 18.47     ~ 409 0
22 GRB 060923C gB 23 04 28.36 +03 55 28.4           ~ 57 0
23 GRB 050803 gB 23 22 37.910 +05 47 09.00           ~ 127 0
24 GRB 060418B gB ~ ~           ~ 3 0

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