1E 1740.7-2942 (the Great Annihilator) enters a low-intensity state

Authors
  • J. Alfonso-Garzon
  • V. Beckmann
  • A.J. Bird
  • S. Brandt
  • J. Chenevez
  • T.J.L. Courvoisier
  • A. Domingo
  • K. Ebisawa
  • P.G. Jonker
  • P. Kretschmar
  • C.B. Markwardt
  • T. Oosterbroek
  • A. Paizis
  • K. Pottschmidt
  • C. Sanchez-Fernandez
  • R. Wijnands
Publication date 2012
Journal The astronomer's telegram
Volume | Issue number 4471
Pages (from-to) 1
Organisations
  • Faculty of Science (FNWI) - Anton Pannekoek Institute for Astronomy (API)
Abstract INTEGRAL has been monitoring the Galactic center region since the beginning of August 2012 during the Galactic bulge (GB) monitoring program (see ATel #438), the Target of Opportunity observations of Swift J174510.8-262411 (see ATel #4450), as well as during other observing programs.

During the GB monitoring observations taken on UT 2012 October 6, 16:15-21:01, the flux of the black-hole candidate 1E 1740.7-2942, also known as the Great Annihilator, was below the GB monitoring detection limits of both ISGRI (~11 mCrab, 3 sigma, 18-40 keV) and JEM-X (~6 mCrab, 3 sigma, 3-10 keV).
Document type Article
Language English
Published at http://www.astronomerstelegram.org/?read=4471
Downloads
1E_1740.7-2942.pdf (Final published version)
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