IGR J22517+2218

Other name = MG3 J225155+2217

Type Redshift Radio Counterpart Infrared/Optical Counterpart
R.A. (J2000) Dec. (J2000) References R.A. (J2000) Dec. (J2000) References
Published Papers
Miscellaneous :

Bassani et al. 2007:
  • Broad line emitting quasar, hosts narrow line absorption system
  • Source is a blazar
  • X-ray spectrum = hard power law with Γ~1.5
  • Curvature at soft X-ray => intrinsic absorption, or broken power law
  • Flux variability over a period of 6 days.
  • SED quite atypical: Synchrotron peak in the X/gamma-ray band, or the Compton peak in the MeV range.
Lanzuisi et al. 2012:
  • Analysis of archival (INTEGRAL, Swift) and new (Suzaku, Fermi) data
  • Source underwent a strong flare in 2005 (INTEGRAL, Swift data) and is in quiescence since then (Suzaku, Fermi)
  • SED built for two states, fitted and interpreted within leptonic one-zone synchrotron and inverse compton model
  • Both states => spectra dominated by the high energy hump peaking at ~1e20-1e22 Hz with a luminosity at least 2 order of magnitudes higher than the synchrotron peak (at ~1e11-1e14 Hz)
  • High energy hump is due to external inverse Compton while SSC component is negligible
  • Variability of the source explained as due to variations of the total number of emitting electrons

Last updated 13 Dec. 2011

Jerome Rodriguez