Redshift Dependence of QSO Spectral Variability

Details Redshift Dependence of QSO Spectral Variability Redshift Dependence of QSO Spectral Variability

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..360...33v&link_type=abstract

AGN Variability from X-Rays to Radio Waves ASP Conference Series, Vol. 360, Proceedings of the conference held 14-16 June, 2004

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present a combined analysis of the optical spectral variability for two samples of QSOs, 42 objects at z<0.4 monitored at the Wise Observatory, plus 59 objects up to z≈ 3 in the field of the Magellanic Clouds, detected and/or monitored within the MACHO Project database. Our analysis shows some increase of the observed spectral variability as a function of redshift, with a large scatter. These data are compared with a model based on the addition of flares of different temperatures to a stationary quasar SED, also taking into account the intrinsic scatter of the SEDs.

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