Earlier activity from XTE J1739-302/IGR J17391-3021 detected by INTEGRAL

Authors
  • S. Brandt
  • T.J.L. Courvoisier
  • A. Domingo
  • K. Ebisawa
  • P. Jonker
  • P. Kretschmar
  • C. Markwardt
  • T. Oosterbroek
  • A. Paizis
  • D. Risquez
  • C. Sanchez-Fernandez
  • S. Shaw
  • R. Wijnands
Publication date 2008
Journal The astronomer's telegram
Volume | Issue number 1471
Organisations
  • Faculty of Science (FNWI) - Anton Pannekoek Institute for Astronomy (API)
Abstract The recently reported outburst from the supergiant fast X-ray transient XTE J1739-302/IGR J17391-3021 (ATEL #1466) began already about five hours earlier than the Swift/BAT trigger on 2008-04-08. The INTEGRAL/JEM-X monitor detected a flare starting at 16:18 (UTC) on the same day during recent Galactic Bulge monitoring observations (see ATEL #1385 and #1468). The flux averaged over the ~2 hour flare reached 42+/-8 mCrab (3-10 keV) and 80+/-15 mCrab (10-25 keV) with upper limits previous to the flare of 4 mCrab (3-10) keV and 8 mCrab (10-25 keV).
Document type Article
Published at http://www.astronomerstelegram.org/?read=1471
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