|  |
| Title:
|
IGR J17464-3213 (= H1743-322) is active again |
| Type:
|
Journal articleJournal article |
| Participant(s):
|
Forfatter:
Kuulkers, E.
ESA/ESAC
Technical University of Denmark
Email:
Forfatter:
Altamirano, D.
UvA
Forfatter:
Alfonso-Garzon, J.
LAEX-CAB/INTA-CSIC
Forfatter:
Beckmann, V.
ISDC
Forfatter:
Bird, T.
Southampton
Technical University of Denmark
Email:
Forfatter:
Courvisier, T.
ISDC
Forfatter:
Domingo, A.
LAEX-CAB/INTA-CSIC
Forfatter:
Ebisawa, K.
ISAS
Forfatter:
Jonker, P.
SRON
Forfatter:
Kretschmar, P.
ESA/ESAC
Forfatter:
Markwardt, C.
GSFC
Forfatter:
Oosterbroek, T.
ESA/ESTEC
Forfatter:
Paizis, A.
INAF-IASF
Forfatter:
Sanchez-Fernandez, C.
ESA/ESAC
Forfatter:
Wijnands, R.
Uva
|
| Abstract:
|
The INTEGRAL Galactic bulge (GB) monitoring program observations on UT April 6, 2011, 04:11-07:53 show that IGR J17464-3213 (= H1743-322) started another outburst. The observed JEM-X fluxes are 11 +/- 2 and 26 +/- 4 mCrab in the 3-10 and 10-25 keV energy bands, respectively, while the observed IBIS/ISGRI fluxes are 34 +/- 2 and 57 +/- 3 mCrab in the 18-40 and 40-100 keV energy bands, respectively. The source is clearly in a hard state. Previous GB observations (April 3, 15:13-19:21) did not reveal any significant emission, with JEM-X and IBIS/ISGRI upper limits of about 3 and 10 mCrab (5 sigma), respectively, in the above quoted energy bands. Swift/BAT observations indicate the outburst started around April 5. The source is also seen in the latest RXTE/PCA Galactic Center scan observations at April 6, 18:10: 15+/-1 mCrab (2-10 keV). The last outburst of this source was in Aug/Sep 2010 (ATels #2774, #2781, #2788, #2792, #2797, #2857). We encourage follow-up observations at all wavelengths. |
| Published:
|
in journal: The Astronomer's Telegram, pages: #3263, 2011 |
|
|