2003A&A...411L.377B


Query : 2003A&A...411L.377B

2003A&A...411L.377B - Astronomy and Astrophysics, volume 411, L377-382 (2003/11-3)

SPI/INTEGRAL observation of the Cygnus region.

BOUCHET L., JOURDAIN E., ROQUES J.P., MANDROU P., VON BALLMOOS P., BOGGS S., CARAVEO P., CASSE M., CORDIER B., DIEHL R., DUROUCHOUX P., VON KIENLIN A., KNODLSEDER J., JEAN P., LELEUX P., LICHTI G.G., MATTESON J., SANCHEZ F., SCHANNE S., SCHOENFELDER V., SKINNER G., STRONG A., TEEGARDEN B., VEDRENNE G. and WUNDERER C.

Abstract (from CDS):

We present the analysis of the first observations of the Cygnus region by the SPI spectrometer onboard the Integral Gamma Ray Observatory, encompassing ∼600 ks of data. Three sources namely Cyg X-1, Cyg X-3 and EXO 2030+375 were clearly detected. Our data illustrate the temporal variability of Cyg X-1 in the energy range from 20keV to 300keV. The spectral analysis shows a remarkable stability of the Cyg X-1 spectra when averaged over one day timescale. The other goal of these observations is SPI inflight calibration and performance verification. The latest objective has been achieved as demonstrated by the results presented in this paper.

Abstract Copyright:

Journal keyword(s): gamma rays: observations - X-ray stars: individual: Cyg X-1, Cyg X-3, EXO 2030+375 - black hole: physics - space telescope: INTEGRAL: SPI

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 HD 226868 HXB 19 58 21.6758193269 +35 12 05.782512305 9.38 9.72 8.91 8.42   O9.7Iabpvar 4021 0
2 NAME Cyg Complex reg 20 32 +45.0           ~ 538 0
3 V* V2246 Cyg HXB 20 32 15.2744631713 +37 38 14.839930326   22.16 19.41 17.32 15.18 B0Ve 386 0
4 V* V1521 Cyg HXB 20 32 25.78 +40 57 27.9           WN4/5-6/7 1820 2

    Equat.    Gal    SGal    Ecl

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2021.07.25-11:19:56

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