Physical reality of shot noise model for the short-term variability of CYG X-1

Details Physical reality of shot noise model for the short-term variability of CYG X-1 Physical reality of shot noise model for the short-term variability of CYG X-1

Sep 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978natur.275..197d&link_type=abstract

Nature, vol. 275, Sept. 21, 1978, p. 197, 198.

Astronomy and Astrophysics

Astronomy

7

Shot Noise, Stochastic Processes, X Ray Sources, Astronomical Models, Black Holes (Astronomy), Radiant Flux Density, Variability

Scientific paper

Shot noise is shown to be only one example of a random process which can explain the basic observed properties of the rapid intensity variation of Cyg X-1. The apparent validity of the shot noise model, which involves random superposition of shot pulses of constant shape, had suggested the physical process of overlapping bursts of X-ray emission from local hot spots in an accretion disk around a black hole. Analysis of some summarized results suggests an alternative - that the variation is essentially spectral (the total X-ray luminosity relatively constant) although a narrow band observation indicates intensity variation. A possible model involves the inverse-Compton emission from a two-temperature disk around a black hole.

Affiliated with

Also associated with

No associations

Rating

Physical reality of shot noise model for the short-term variability of CYG X-1 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 Physical reality of shot noise model for the short-term variability of CYG X-1, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Physical reality of shot noise model for the short-term variability of CYG X-1 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-942842