Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-07-03
Astron.Astrophys. 425 (2004) 1061-1068
Astronomy and Astrophysics
Astrophysics
8 pages, 7 figures, accepted for publication in A&A
Scientific paper
10.1051/0004-6361:20040280
Long time scale radio-X-ray correlations in black holes during the hard state have been found in many sources and there seems to emerge a universal underlying relationship which quantitatively describes this behavior. Although it would appear only natural to detect short term emission patterns in the X-ray and - with a certain time lag - in the radio, there has been little evidence for this up to now. The most prominent source for radio-X-ray correlations on short time scales (minutes) so far remains GRS 1915+105 where a single mass ejection could be detected successively in the X-ray, IR, and radio wavebands. We analyze a database of more than 4 years of simultaneous radio-X-ray data for Cygnus X-1 from the Ryle Telescope and RXTE PCA/HEXTE. We confirm the existence of a radio-X-ray correlation on long time scales, especially at hard energies. We show that apparent correlations on short time scales in the lightcurves of Cygnus X-1 are most likely the coincidental outcome of white noise statistics. Interpreting this result as a breakdown of radio-X-ray correlations on shorter time scales, this sets a limit to the speed of the jet.
Fender Rob P.
Gleissner T.
Heinz Sebastian
Klein-Wolt Marc
Markoff Sera
No associations
LandOfFree
Long term variability of Cygnus X-1, III. Radio-X-ray correlations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Long term variability of Cygnus X-1, III. Radio-X-ray correlations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long term variability of Cygnus X-1, III. Radio-X-ray correlations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-606771