First results from the IBIS/ISGRI data obtained during the Galactic Plane Scan - II. The Vela region

J. Rodriguez; M. Del Santo; F. Lebrun; G. Belanger; M. Cadolle-Bel; F. Capitanio; P. David; L. Foschini; P. Goldoni; A. Goldwurm; A. Gros; P. Laurent; A. Paizis; J. Paul; R. Terrier; S. E. Shaw; P. Ubertini

doi:doi:10.1051/0004-6361:20031154

Free access

Issue		A&A Volume 411, Number 1, November III 2003 Special letters issue on: first science with integral


Page(s)		L373 - L376
Section		Letters
DOI		http://dx.doi.org/10.1051/0004-6361:20031154

A&A 411, L373-L376 (2003)
DOI: 10.1051/0004-6361:20031154

Letter

First results from the IBIS/ISGRI data obtained during the Galactic Plane Scan

II. The Vela region

J. Rodriguez^{1, 2}, M. Del Santo³, F. Lebrun⁴, G. Belanger⁴, M. Cadolle-Bel⁴, F. Capitanio³, P. David¹, L. Foschini⁵, P. Goldoni⁴, A. Goldwurm⁴, A. Gros⁴, P. Laurent⁴, A. Paizis^{6, 2}, J. Paul⁴, R. Terrier¹, S. E. Shaw^{7, 2} and P. Ubertini³

¹ CEA Saclay, DSM/DAPNIA/SAp (CNRS FRE 2591), 91191 Gif-sur-Yvette Cedex, France
² Integral Science Data Center, Chemin d'Écogia, 16, 1290 Versoix, Switzerland
³ IASF/CNR, via del Fosso del Cavaliere 100, 00133 Roma, Italy
⁴ CEA Saclay, DSM/DAPNIA/SAp, 91191 Gif-sur-Yvette Cedex, France
⁵ IASF/CNR, sezione di Bologna, via Gobetti 101, 40129 Bologna, Italy
⁶ IASF/CNR, Sezione di Milano, via Bassini 15, 20133 Milano, Italy
⁷ School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ UK

(Received 2 July 2003 / Accepted 30 July 2003)

Abstract
We report on INTEGRAL/IBIS observations of the Vela region during a Galactic Plane Scan (hereafter GPS) presenting the IBIS in-flight performances during these operations. Among all the known sources in the field of view we clearly detect 4U 0836-429, Vela X-1, Cen X-3, GX 301-2, 1E 1145.1-6141, and H0918-549 in the 20-40 keV energy range. Only Vela X-1 and GX 301-2 are detected in the 40-80 keV energy range, and no sources are visible above. We present the results of each individual observation (~ 2200 s exposure), as well as those from the mosaic of these scans.

Key words: instrumentation: detectors -- Galaxy: disk -- $\gamma$ -rays: observations -- X-rays: binaries

Offprint request: J. Rodriguez, jrodriguez@cea.fr

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