dc.contributor.author |
Gupta, A. C. |
|
dc.date.accessioned |
2013-01-31T05:52:20Z |
|
dc.date.available |
2013-01-31T05:52:20Z |
|
dc.date.issued |
2011 |
|
dc.identifier.uri |
http://hdl.handle.net/123456789/915 |
|
dc.description.abstract |
It is well established that the blazars show flux variations in the complete electromagnetic (EM) spectrum on all possible time scales ranging from a few tens of minutes to several years. Here we report the
review of various UV and X-ray flux variability properties of blazars.
Our analysis show that UV variability amplitude is smaller than X-rays,
mostly soft X-rays hardness ratio show correlations with blazar luminosity
and different modes of variability might be operating for different time scales and epochs. Quasi periodic oscillations are seen on a few occasions in blazars, higher fraction of high energy peaked blazars show intra day and short term variabilities in X-rays but variability duty cycle is much less in optical bands on intra day time scale compared to low energy peaked blazars. But these results are yet to be established. |
en_US |
dc.language.iso |
en_US |
en_US |
dc.relation.ispartofseries |
jaa32-155 |
|
dc.subject |
Galaxies: active—galaxies: quasars—blazars—blazar: individual: PKS 2155–304. |
en_US |
dc.title |
UV and X-ray variability of blazars |
en_US |
dc.type |
Article |
en_US |