|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'928
Articles rated: 2609
25 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Long Term Variability of Cyg X-1, II. The rms-Flux Relation | | T. Gleissner
; J. Wilms
; K. Pottschmidt
; P. Uttley
; M. A. Nowak
; R. Staubert
; | | Date: |
3 Nov 2003 | | Journal: | Astron.Astrophys. 414 (2004) 1091-1104 | | Subject: | astro-ph | | Affiliation: | 2 and 3), P. Uttley , M. A. Nowak , R. Staubert ( IAA Tuebingen, MPE, ISDC, University of Southampton, MIT | | Abstract: | We study the long term evolution of the relationship between the root mean square (rms) variability and flux (the ``rms-flux relation’’) for the black hole Cygnus X-1 as monitored from 1996 to 2003 with the Rossi X-ray Timing Explorer (RXTE). We confirm earlier results by Uttley & McHardy (2001) of a linear relationship between rms and flux in the hard state on time scales > 5 s reflecting in its slope the fractional rms variability. We demonstrate the perpetuation of the linear rms-flux relation in the soft and the intermediate state. The existence of a non-zero intercept in the linear rms-flux relation argues for two lightcurve components, for example, one variable and one non-variable component, or a possible constant rms component. The relationship between these two hypothesized components can be described by a fundamental dependence of slope and intercept at time scales ~< 10 ksec with long term averages of the flux. | | Source: | arXiv, astro-ph/0311039 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER