Time resolved spectroscopy of GRB 030501 using INTEGRAL

V. Beckmann; J. Borkowski; T.J.L. Courvoisier; D. Gotz; R. Hudec; F. Hroch; Niels Lund; S. Mereghetti; S.E. Shaw; A. von Kienlin; C. Wigger

Time resolved spectroscopy of GRB 030501 using INTEGRAL

V. Beckmann, J. Borkowski, T.J.L. Courvoisier, D. Gotz, R. Hudec, F. Hroch, Niels Lund, S. Mereghetti, S.E. Shaw, A. von Kienlin, C. Wigger

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The gamma-ray instruments on-board INTEGRAL offer an unique opportunity to perform time resolved analysis on GRBs. The imager IBIS allows accurate positioning of GRBs and broad band spectral analysis, while SPI provides high resolution spectroscopy. GRB 030501 was discovered by the INTEGRAL Burst Alert System in the ISGRI field of view. Although the burst was fairly weak (fluence F20-200 keV similar or equal to 3.5x10(-6) erg cm(-2)) it was possible to perform time resolved spectroscopy with a resolution of a few seconds. The GRB shows a spectrum in the 20-400 keV range which is consistent with a spectral index Gamma=-1.8. No emission line or spectral break was detectable in the spectrum. Although the flux seems to be correlated with the hardness of the GRB spectrum, there is no clear soft to hard evolution seen over the duration of the burst. The INTEGRAL data have been compared with results from the Ulysses and RHESSI experiments.

Original language	English
Journal	Astronomy and Astrophysics
Volume	411
Issue number	1
Pages (from-to)	L327-L330
ISSN	0004-6361
Publication status	Published - 2003

Keywords

gamma rays : bursts
gamma rays : observations

OpenUrl availability

Full text

Cite this

@article{07bd3e0fe33d4ef2a85c6774b427e7cc,

title = "Time resolved spectroscopy of GRB 030501 using INTEGRAL",

abstract = "The gamma-ray instruments on-board INTEGRAL offer an unique opportunity to perform time resolved analysis on GRBs. The imager IBIS allows accurate positioning of GRBs and broad band spectral analysis, while SPI provides high resolution spectroscopy. GRB 030501 was discovered by the INTEGRAL Burst Alert System in the ISGRI field of view. Although the burst was fairly weak (fluence F20-200 keV similar or equal to 3.5x10(-6) erg cm(-2)) it was possible to perform time resolved spectroscopy with a resolution of a few seconds. The GRB shows a spectrum in the 20-400 keV range which is consistent with a spectral index Gamma=-1.8. No emission line or spectral break was detectable in the spectrum. Although the flux seems to be correlated with the hardness of the GRB spectrum, there is no clear soft to hard evolution seen over the duration of the burst. The INTEGRAL data have been compared with results from the Ulysses and RHESSI experiments.",

keywords = "gamma rays : bursts, gamma rays : observations",

author = "V. Beckmann and J. Borkowski and T.J.L. Courvoisier and D. Gotz and R. Hudec and F. Hroch and Niels Lund and S. Mereghetti and S.E. Shaw and {von Kienlin}, A. and C. Wigger",

year = "2003",

language = "English",

volume = "411",

pages = "L327--L330",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

number = "1",

}

TY - JOUR

T1 - Time resolved spectroscopy of GRB 030501 using INTEGRAL

AU - Beckmann, V.

AU - Borkowski, J.

AU - Courvoisier, T.J.L.

AU - Gotz, D.

AU - Hudec, R.

AU - Hroch, F.

AU - Lund, Niels

AU - Mereghetti, S.

AU - Shaw, S.E.

AU - von Kienlin, A.

AU - Wigger, C.

PY - 2003

Y1 - 2003

N2 - The gamma-ray instruments on-board INTEGRAL offer an unique opportunity to perform time resolved analysis on GRBs. The imager IBIS allows accurate positioning of GRBs and broad band spectral analysis, while SPI provides high resolution spectroscopy. GRB 030501 was discovered by the INTEGRAL Burst Alert System in the ISGRI field of view. Although the burst was fairly weak (fluence F20-200 keV similar or equal to 3.5x10(-6) erg cm(-2)) it was possible to perform time resolved spectroscopy with a resolution of a few seconds. The GRB shows a spectrum in the 20-400 keV range which is consistent with a spectral index Gamma=-1.8. No emission line or spectral break was detectable in the spectrum. Although the flux seems to be correlated with the hardness of the GRB spectrum, there is no clear soft to hard evolution seen over the duration of the burst. The INTEGRAL data have been compared with results from the Ulysses and RHESSI experiments.

AB - The gamma-ray instruments on-board INTEGRAL offer an unique opportunity to perform time resolved analysis on GRBs. The imager IBIS allows accurate positioning of GRBs and broad band spectral analysis, while SPI provides high resolution spectroscopy. GRB 030501 was discovered by the INTEGRAL Burst Alert System in the ISGRI field of view. Although the burst was fairly weak (fluence F20-200 keV similar or equal to 3.5x10(-6) erg cm(-2)) it was possible to perform time resolved spectroscopy with a resolution of a few seconds. The GRB shows a spectrum in the 20-400 keV range which is consistent with a spectral index Gamma=-1.8. No emission line or spectral break was detectable in the spectrum. Although the flux seems to be correlated with the hardness of the GRB spectrum, there is no clear soft to hard evolution seen over the duration of the burst. The INTEGRAL data have been compared with results from the Ulysses and RHESSI experiments.

KW - gamma rays : bursts

KW - gamma rays : observations

M3 - Journal article

SN - 0004-6361

VL - 411

SP - L327-L330

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 1

ER -

Time resolved spectroscopy of GRB 030501 using INTEGRAL

Abstract

Keywords

OpenUrl availability

Fingerprint

Cite this