Radio/x-ray correlation in the low/hard state of GX 339-4

Jan, 2003
8 pages
Published in:
  • Astron.Astrophys. 400 (2003) 1007-1012
e-Print:

Citations per year

2003200920152021202505101520
Abstract: (arXiv)
We present the results of a long-term study of the black hole candidate GX 339-4 using simultaneous radio (from the Australia Telescope Compact Array) and X-ray (from the Rossi X-ray Timing Explorer and BeppoSAX) observations performed between 1997 and 2000. We find strong evidence for a correlation between these two emission regimes that extends over more than three decades in X-ray flux, down to the quiescence level of GX 339-4. This is the strongest evidence to date for such strong coupling between radio and X-ray emission. We discuss these results in light of a jet model that can explain the radio/X-ray correlation. This could indicate that a significant fraction of the X-ray flux that is observed in the low-hard state of black hole candidates may be due to optically thin synchrotron emission from the compact jet.
  • BLACK HOLE PHYSICS
  • RADIATION MECHANISMS NON-THERMAL
  • ISM JETS
  • ISM OUTFLOWS
  • RADIO CONTINUUM STARS
  • X-RAY STARS