User menu

Accès à distance ? S'identifier sur le proxy UCLouvain

SPI/INTEGRAL observation of the Cygnus region

Primary tabs

download
  • Open access
  • PDF
  • 207.05 K
Bouchet, L. Jourdain, E Roques, JP Mandrou, P. von Ballmoos, P. Leleux, Pierre [UCL] Wunderer, C

We present the analysis of the first observations of the Cygnus region by the SPI spectrometer onboard the Integral Gamma Ray Observatory, encompassing similar to600 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 20 keV to 300 keV. 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.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès libre
Publication date 2003
Language Anglais
Journal information "Astronomy & Astrophysics : a European journal" - Vol. 411, no. 1, p. L377-L382 (2003)
Peer reviewed yes
Publisher E D P Sciences (Les Ulis Cedexa)
issn 0004-6361
e-issn 1432-0746
Publication status Publié
Affiliation UCL - SC/PHYS - Département de physique
Keywords gamma rays : observations ; X-ray stars : individual : Cyg X-1, Cyg X-3, EXO 2030+375 ; black hole : physics ; space telescope : INTEGRAL : SPI
Links
  1. Choudhury M., Rao A. R., Vadawale S. V., Ishwara-Chandra C. H., Jain A. K., Disk-jet connection in Cygnus X-3, 10.1051/0004-6361:20020091
  2. Dickey J. M., A new distance to Cygnus X-3, 10.1086/184132
  3. Diehl R., Baby N., Beckmann V., Connell P., Dubath P., Jean P., Knödlseder J., Roques J.-P., Schanne S., Shrader C., Skinner G., Strong A., Sturner S., Teegarden B., von Kienlin A., Weidenspointner G., SPI-specific analysis method and software overview, 10.1051/0004-6361:20031365
  4. Distefano C., Guetta D., Waxman E., Levinson A., Neutrino Flux Predictions for Known Galactic Microquasars, 10.1086/341144
  5. Gimenez, A., Mas-Hesse, J. M., Jarmar, C., et al. 1997, in Proc. 2nd INTEGRAL workshop, The transparent universe, St-Malo, France ESA SP-382, 613
  6. Laycock, MNRAS, 3, 38 (2003)
  7. McConnell M. L., Zdziarski A. A., Bennett K., Bloemen H., Collmar W., Hermsen W., Kuiper L., Paciesas W., Phlips B. F., Poutanen J., Ryan J. M., Schonfelder V., Steinle H., Strong A. W., The Soft Gamma‐Ray Spectral Variability of Cygnus X‐1, 10.1086/340436
  8. McCollough M. L., Robinson C. R., Zhang S. N., Harmon B. A., Hjellming R. M., Waltman E. B., Foster R. S., Ghigo F. D., Briggs M. S., Pendleton G. N., Johnston K. J., Discovery of Correlated Behavior between the Hard X‐Ray and the Radio Bands in Cygnus X‐3, 10.1086/307241
  9. Parmar A. N., White N. E., Stella L., Izzo C., Ferri P., The transient 42 second X-ray pulsar EXO 2030+375. I - The discovery and the luminosity dependence of the pulse period variations, 10.1086/167204
  10. Phlips B. F., Jung G. V., Leising M. D., Grove J. E., Johnson W. N., Kinzer R. L., Kroeger R. A., Kurfess J. D., Strickman M. S., Grabelsky D. A., Matz S. M., Purcell W. R., Ulmer M. P., McNaron-Brown K., Gamma-Ray Observations of Cygnus X-1 with the Oriented Scintillation Spectrometer Experiment, 10.1086/177474
  11. Reig P., Coe M. J., X-ray spectral properties of the pulsar EXO 2030+375 during an outburst, 10.1046/j.1365-8711.1999.02179.x
  12. Roques, J. P., Schanne, S., von Kienlin, A., et al. 2003, 411, L91
  13. Skinner G., Connell P., The Spiros imaging software for the Integral SPI spectrometer , 10.1051/0004-6361:20031260
  14. Sturner S. J., Shrader C. R., Weidenspointner G., Teegarden B. J., Attié D., Cordier B., Diehl R., Ferguson C., Jean P., von Kienlin A., Paul Ph., Sánchez F., Schanne S., Sizun P., Skinner G., Wunderer C. B., Monte Carlo simulations and generation of the SPI response, 10.1051/0004-6361:20031171
  15. Sunyaev, A&A, 86, 121 (1980)
  16. Ubertini, P., Di Cocco, G., & Lebrun, F. 1997, in Proc. 2nd INTEGRAL workshop, The transparent universe, St-Malo, France ESA SP-382, 599
  17. van Kerkwijk M. H., Charles P. A., Geballe T. R., King D. L., Miley G. K., Molnar L. A., van den Heuvel E. P. J., vander Klis M., van Paradijs J., Infrared helium emission lines from Cygnus X-3 suggesting a Wolf-Rayet star companion, 10.1038/355703a0
  18. Vedrenne G., Roques J.-P., Schönfelder V., Mandrou P., Lichti G. G., von Kienlin A., Cordier B., Schanne S., Knödlseder J., Skinner G., Jean P., Sanchez F., Caraveo P., Teegarden B., von Ballmoos P., Bouchet L., Paul P., Matteson J., Boggs S., Wunderer C., Leleux P., Weidenspointner G., Durouchoux Ph., Diehl R., Strong A., Cassé M., Clair M. A., André Y., SPI: The spectrometer aboard INTEGRAL, 10.1051/0004-6361:20031482
  19. Walter R., Favre P., Dubath P., Domingo A., Gienger G., Hermsen W., Pineiro J., Kuiper L., Schmidt M., Skinner G., Tuttlebee M., Ziegler G., T. J.-L. Courvoisier, INTEGRAL timing and localization performance, 10.1051/0004-6361:20031306
  20. Westergaard, N. J., Budtz-Jorgensen, C., Schnopper, H. W., et al. 1997, in Proc. 2nd INTEGRAL workshop, The transparent universe, St-Malo, France ESA SP-382, 615
  21. Wilson Colleen A., Finger Mark H., Coe M. J., Laycock Silas, Fabregat J., A Decade in the Life of EXO 2030+375: A Multiwavelength Study of an Accreting X‐Ray Pulsar, 10.1086/339739
Bibliographic reference Bouchet, L. ; Jourdain, E ; Roques, JP ; Mandrou, P. ; von Ballmoos, P. ; et. al. SPI/INTEGRAL observation of the Cygnus region. In: Astronomy & Astrophysics : a European journal, Vol. 411, no. 1, p. L377-L382 (2003)
Permanent URL http://hdl.handle.net/2078.1/40706