INTEGRAL upper limits on a bright X-ray flare from Sgr A

Guillaume Trap, Andrea Goldwurm, Régis Terrier, Guillaume Bélanger, Farhad Yusef-Zadeh, Fulvio Melia

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Sgr A* is the supermassive black hole housed at the Galactic Center. Its non-thermal X-ray counterpart is variable and exhibits rapid flares about once per day. Besides, a soft y-ray source discovered by INTEGRAL apparently coincident with Sgr Az.ast;, IGR J17456-2901, might be related to the X-ray emission. To gain more indsight on the possible links between X-rays and y-rays, a new joint XMM-Newton/INTEGRAL campaign on the Galactic Center was performed in April 2007. Here, we report the INTEGRAL ∼100 ks long observation of this campaign. For the first time, a bright X-ray flare from Sgr A* detected by XMM-Newton (∼16.1 × 10-12 erg s-1 cm-2, 2-10 keV) fell into INTEGRAL observing time. However, no evidence for variability was found by INTEGRAL/ISGRI, neither in the 20-40 nor in the 40-100 keV band, for which we place 3σ upper limits on the flare's flux of 3.63 and 3.60 × 10 -11 erg s-1 cm-2, respectively.

Original languageEnglish (US)
Title of host publicationProceedings of Science
StatePublished - 2008
Event7th INTEGRAL Workshop - An INTEGRAL View of Compact Objects, INTEGRAL 2008 - Copenhagen, Denmark
Duration: Sep 8 2008Sep 11 2008

Other

Other7th INTEGRAL Workshop - An INTEGRAL View of Compact Objects, INTEGRAL 2008
CountryDenmark
CityCopenhagen
Period9/8/089/11/08

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flares
XMM-Newton telescope
newton
rays
x rays

ASJC Scopus subject areas

  • General

Cite this

Trap, G., Goldwurm, A., Terrier, R., Bélanger, G., Yusef-Zadeh, F., & Melia, F. (2008). INTEGRAL upper limits on a bright X-ray flare from Sgr A. In Proceedings of Science

INTEGRAL upper limits on a bright X-ray flare from Sgr A. / Trap, Guillaume; Goldwurm, Andrea; Terrier, Régis; Bélanger, Guillaume; Yusef-Zadeh, Farhad; Melia, Fulvio.

Proceedings of Science. 2008.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Trap, G, Goldwurm, A, Terrier, R, Bélanger, G, Yusef-Zadeh, F & Melia, F 2008, INTEGRAL upper limits on a bright X-ray flare from Sgr A. in Proceedings of Science. 7th INTEGRAL Workshop - An INTEGRAL View of Compact Objects, INTEGRAL 2008, Copenhagen, Denmark, 9/8/08.
Trap G, Goldwurm A, Terrier R, Bélanger G, Yusef-Zadeh F, Melia F. INTEGRAL upper limits on a bright X-ray flare from Sgr A. In Proceedings of Science. 2008
Trap, Guillaume ; Goldwurm, Andrea ; Terrier, Régis ; Bélanger, Guillaume ; Yusef-Zadeh, Farhad ; Melia, Fulvio. / INTEGRAL upper limits on a bright X-ray flare from Sgr A. Proceedings of Science. 2008.
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AU - Trap, Guillaume

AU - Goldwurm, Andrea

AU - Terrier, Régis

AU - Bélanger, Guillaume

AU - Yusef-Zadeh, Farhad

AU - Melia, Fulvio

PY - 2008

Y1 - 2008

N2 - Sgr A* is the supermassive black hole housed at the Galactic Center. Its non-thermal X-ray counterpart is variable and exhibits rapid flares about once per day. Besides, a soft y-ray source discovered by INTEGRAL apparently coincident with Sgr Az.ast;, IGR J17456-2901, might be related to the X-ray emission. To gain more indsight on the possible links between X-rays and y-rays, a new joint XMM-Newton/INTEGRAL campaign on the Galactic Center was performed in April 2007. Here, we report the INTEGRAL ∼100 ks long observation of this campaign. For the first time, a bright X-ray flare from Sgr A* detected by XMM-Newton (∼16.1 × 10-12 erg s-1 cm-2, 2-10 keV) fell into INTEGRAL observing time. However, no evidence for variability was found by INTEGRAL/ISGRI, neither in the 20-40 nor in the 40-100 keV band, for which we place 3σ upper limits on the flare's flux of 3.63 and 3.60 × 10 -11 erg s-1 cm-2, respectively.

AB - Sgr A* is the supermassive black hole housed at the Galactic Center. Its non-thermal X-ray counterpart is variable and exhibits rapid flares about once per day. Besides, a soft y-ray source discovered by INTEGRAL apparently coincident with Sgr Az.ast;, IGR J17456-2901, might be related to the X-ray emission. To gain more indsight on the possible links between X-rays and y-rays, a new joint XMM-Newton/INTEGRAL campaign on the Galactic Center was performed in April 2007. Here, we report the INTEGRAL ∼100 ks long observation of this campaign. For the first time, a bright X-ray flare from Sgr A* detected by XMM-Newton (∼16.1 × 10-12 erg s-1 cm-2, 2-10 keV) fell into INTEGRAL observing time. However, no evidence for variability was found by INTEGRAL/ISGRI, neither in the 20-40 nor in the 40-100 keV band, for which we place 3σ upper limits on the flare's flux of 3.63 and 3.60 × 10 -11 erg s-1 cm-2, respectively.

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