Fermi GBM observes another decrease in hard x-rays from Cyg X-1

Abstract:

Cygnus X-1 has been quite active over the last~ 2 years, undergoing two hard-to-soft state transitions. The GBM Earth Occultation Team has been using GBM to monitor Cyg X-1 in hard x-ray and low energy gamma-ray energies (8-1000 keV) during this time. After the most recent soft state transition (ATel# 3534,# 3616,# 3636), GBM observed the Cyg X-1 hard x-ray fluxes to begin recover to the hard state beginning MJD 55890 (ATel# 3802).

Año de publicación:

2012

Keywords:

Fuente:

google