Long duration X-ray burst from GX 3+1

S. Brandt; N. Lund; J. Chenevez; C. Budtz-Jørgensen; P. Goldoni; G. Belanger; A. Goldwurm; E. Kuulkers

Long duration X-ray burst from GX 3+1

S. Brandt, N. Lund, J. Chenevez, C. Budtz-Jørgensen, P. Goldoni, G. Belanger, A. Goldwurm, E. Kuulkers

National Space Institute

Research output: Other contribution › Net publication - Internet publication › Research

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Abstract

During an observation of the Galactic Center the JEM-X instrument on INTEGRAL detected an unusally long X-ray burst from GX 3+1. The burst began on August 31 at 18:57 UTC

After an precursor spike lasting 7 s where the burst reached a flux of about 2000 mCrab in the 4 to 20 keV band the flux fell to around 500 mCrab and then decayed with an e-folding time of about 700 s. This burst appear as intermediate between the normal type-I X-ray bursts (e-folding times up to a few tens of seconds) and the very long "superbursts" (e-folding times of several hours).

Prior to the outburst the source flux was about 150 mCrab.

Follow-up observations are encouraged.

Original language	English
Publication date	2 Sep 2004
Publication status	Published - 2 Sep 2004

Series	The Astronomer's telegram
Number	ATel #327

Keywords

x-ray
Request for observations
Neutron star

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title = "Long duration X-ray burst from GX 3+1",

abstract = " During an observation of the Galactic Center the JEM-X instrument on INTEGRAL detected an unusally long X-ray burst from GX 3+1. The burst began on August 31 at 18:57 UTCAfter an precursor spike lasting 7 s where the burst reached a flux of about 2000 mCrab in the 4 to 20 keV band the flux fell to around 500 mCrab and then decayed with an e-folding time of about 700 s. This burst appear as intermediate between the normal type-I X-ray bursts (e-folding times up to a few tens of seconds) and the very long {"}superbursts{"} (e-folding times of several hours).Prior to the outburst the source flux was about 150 mCrab.Follow-up observations are encouraged. ",

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T1 - Long duration X-ray burst from GX 3+1

AU - Brandt, S.

AU - Lund, N.

AU - Chenevez, J.

AU - Budtz-Jørgensen, C.

AU - Goldoni, P.

AU - Belanger, G.

AU - Goldwurm, A.

AU - Kuulkers, E.

PY - 2004/9/2

Y1 - 2004/9/2

N2 - During an observation of the Galactic Center the JEM-X instrument on INTEGRAL detected an unusally long X-ray burst from GX 3+1. The burst began on August 31 at 18:57 UTCAfter an precursor spike lasting 7 s where the burst reached a flux of about 2000 mCrab in the 4 to 20 keV band the flux fell to around 500 mCrab and then decayed with an e-folding time of about 700 s. This burst appear as intermediate between the normal type-I X-ray bursts (e-folding times up to a few tens of seconds) and the very long "superbursts" (e-folding times of several hours).Prior to the outburst the source flux was about 150 mCrab.Follow-up observations are encouraged.

AB - During an observation of the Galactic Center the JEM-X instrument on INTEGRAL detected an unusally long X-ray burst from GX 3+1. The burst began on August 31 at 18:57 UTCAfter an precursor spike lasting 7 s where the burst reached a flux of about 2000 mCrab in the 4 to 20 keV band the flux fell to around 500 mCrab and then decayed with an e-folding time of about 700 s. This burst appear as intermediate between the normal type-I X-ray bursts (e-folding times up to a few tens of seconds) and the very long "superbursts" (e-folding times of several hours).Prior to the outburst the source flux was about 150 mCrab.Follow-up observations are encouraged.

KW - x-ray

KW - Request for observations

KW - Neutron star

M3 - Net publication - Internet publication

T3 - The Astronomer's telegram

ER -