The 2005 october multiwavelength campaign of GRS 1915+105

Y. Ueda, R. Ishioka, K. Sekiguchi, M. Ribo, J. Rodriguez, S. Chaty, J. Greiner, G. Sala, Y. Fuchs, P. Goldoni, S. Covino, G. G. Pooley, P. Edwards, A. Tzioumis, H. Lehto, E. Gerard, P. Colom, J. Martin, S. A. Trushkin, A. J. Castro-TiradoD. Hannikainen, H. Sudo, M. Honma, F. Iwamuro, K. Kubuta, K. Yamaoka, C. Done, S. Naik, Y. Fukazawa, L. Angelini, H. Awaki, K. Ebisawa, K. Iwasawa, N. Kawai, K. Kinugasa, M. Kokubun, T. Kotani, A. Kubota, T. Murakami, M. Namiki, H. Takahashi, T. Yaqoob, D. Yonetoku, A. Yoshida

Research output: Contribution to journalConference articlepeer-review


We report the first results of a large multiwavelength campaign of GRS 1915+105 performed between 2005 October 16 to October 18 with Suzaku, INTEGRAL, RXTE, Swift, Spitzer, and ground observatories including Subaru, ESO/NTT, REM (infrared), VLA, ATCA, Nancay, Ryle, and RATAN (radio). GRS 1915+105 was firstly in the stable state with a 6 Hz QPO but then entered into the oscillation phase identified as Class θ. The Suzaku spectra in the 1-80 keV band are very soft, approximated by a photo index of 3-3.8 with varying iron-K features in different Xray states. The simultaneous Subaru and X-ray light curves in the oscillation phase indicate that infrared flares occur after the X-ray dip with variable time delay. This result strongly suggests that the disc transition from State C to State A triggers the ejection of jet, which eventually produces infrared/radio flares by internal shock.

Original languageEnglish
JournalInternational Conference Recent Advances in Natural Language Processing, RANLP
Publication statusPublished - 2006
Externally publishedYes
Event6th Microquasar Workshop: Microquasars and Beyond, MQW 2006 - Como, Italy
Duration: 2006 Sep 182006 Sep 22

ASJC Scopus subject areas

  • Software
  • Computer Science Applications
  • Artificial Intelligence
  • Electrical and Electronic Engineering


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