Study of rapid variability in Cygnus X-1

✍ Scribed by C. G. Page

• Publisher: Springer Netherlands
• Year: 1985
• Tongue: English
• Weight: 203 KB
• Volume: 40
• Category: Article
• ISSN: 0038-6308
• DOI: 10.1007/bf00179846

✦ Synopsis

The EXOSAT Medium Energy instrument has been used with the new HER6 mode to study the rapid variability of Cygnus X-I.

It was found that the fluctuations in the higher energy band (5-14 keV) lagged behind those in the lower band (2-5 keV) by about 6 milliseconds. This confirms predictions of the inverse Compton model and gives an upper limit to the scale-size of the hot gas clouds.