2004A&A...416..297G


Query : 2004A&A...416..297G

2004A&A...416..297G - Astronomy and Astrophysics, volume 416, 297-310 (2004/3-2)

Comparative study of the two large flares from SGR1900+14 with the BeppoSAX Gamma-Ray Burst Monitor.

GUIDORZI C., FRONTERA F., MONTANARI E., FEROCI M., AMATI L., COSTA E. and ORLANDINI M.

Abstract (from CDS):

We report on spectral and temporal results of the 40-700 keV observations, obtained with the Gamma-Ray Burst Monitor (GRBM) on board BeppoSAX, of the two large flares from the Soft Gamma-ray Repeater SGR 1900+14 occurred on August 27, 1998 and April 18, 2001. From their intensity, fluence and duration, the first one was classified as ``giant'' and the second as ``intermediate''.The spectral results have been obtained with an improved response function of the GRBM. We find that the two events have similar spectral properties, but different temporal properties. The major difference concerns the time profiles of the light curves, whereas the lack of evidence in the 2001 flare for the erratic time variability found at high frequencies (10-1000Hz) in the 1998 flare could be ascribed to lower counting statistics. We discuss these results in the light of the magnetar model proposed for SGR sources.

Abstract Copyright:

Journal keyword(s): stars: pulsars: individual: SGR1900+14 - X-rays: bursts - stars: magnetic fields

Simbad objects: 16

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Number of rows : 16
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 GRB 991216 gB 05 09 31.2983 +11 17 07.262           ~ 413 0
2 PSR B0525-66 Psr 05 26 00.7 -66 04 35           ~ 527 1
3 2E 2336 HXB 10 50 08.93 -59 53 19.9           Be 389 0
4 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 971 1
5 GRB 941110 gB 16 06 +47.7           ~ 22 0
6 GRB 980618A gB 16 35 52 -47 35.2           ~ 247 0
7 PSR J1708-4008 Psr 17 08 49.0 -40 09 10           ~ 271 0
8 NAME Sgr 1801-23 gam 18 00 58.9 -22 56 48           ~ 37 0
9 PSR J1808-2024 Psr 18 08 39.32 -20 24 40.1           ~ 1148 2
10 SNR G041.5+00.4 SNR 19 05 48 +07 46.1           ~ 14 0
11 GBS 1900+14 gB 19 07 13 +09 19.6           ~ 807 0
12 SNR G042.8+00.6 SNR 19 07 41.80 +09 07 17.0           ~ 123 1
13 SNR G042.0-00.1 SNR 19 08 11 +08 00.5           ~ 11 0
14 SNR G043.5+00.6 SNR 19 08 26 +09 42.0           ~ 3 0
15 2E 4673 HXB 23 01 08.14 +58 52 44.5           ~ 600 1
16 NAME Sgr 1808-20 gam ~ ~           ~ 13 0

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2021.10.17-00:23:44

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