The Pattern of Correlated X-ray Timing and Spectral Behavior in GRS 1915+105

Details The Pattern of Correlated X-ray Timing and Spectral Behavior in GRS 1915+105 The Pattern of Correlated X-ray Timing and Spectral Behavior in GRS 1915+105

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...189.3510c&link_type=abstract

American Astronomical Society, 189th AAS Meeting, #35.10; Bulletin of the American Astronomical Society, Vol. 28, p.1315

Other

Scientific paper

From data obtained from the PCA in the 2-10 keV and 10-30 keV energy range, GRS 1915+105 is seen during RXTE observations between May and October 1996 on three separate branches in a hardness intensity diagram. On the hard branch, GRS 1915+105 exhibits narrow quasi-periodic oscillations ranging from 0.5 to 6 Hz with {Delta nu / nu } ~ 0.2. The QPOs are observed over intensities ranging from about 6,000 to 20,000 counts s(-1) in the 2 - 12.5 keV energy band, indicating a strong dependence on source intensity. Strong harmonics are seen, especially, at lower frequencies. As the QPO frequency increases, the harmonic feature weakens and disappears. On the soft branch, QPOs are absent and the low frequency component of the power density spectrum is approximated by a power-law (with index ~ -1.25). Occasionally, a broad peaked feature in the 1-6 Hz frequency range is also observed on this branch. On the intermediate branch, the power density spectrum is similar in kind to that on the soft branch, but differs in degree since the low frequency component is steeper with a power law index of ~ -1.5. The source was probably in the very high state similar to those of other black hole candidates. Thermal-viscous instabilities in accretion disk models do not predict the correlation of frequency and luminosity unless the fraction of luminosity from the disk decreases with the total luminosity.

Affiliated with

Also associated with

No associations

Rating

The Pattern of Correlated X-ray Timing and Spectral Behavior in GRS 1915+105 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 The Pattern of Correlated X-ray Timing and Spectral Behavior in GRS 1915+105, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Pattern of Correlated X-ray Timing and Spectral Behavior in GRS 1915+105 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-816151