Wavelet analysis of fast photometry on Cygnus X-1 with the AstraLux camera

LUQUE-ESCAMILLA, P. L.; MARTÍ, J.; HORMUTH, F.; COMBI, JORGE A.; ARJONILLA, ÁLVARO MUÑOZ; SÁNCHEZ-SUTIL, J. R.

India

Conferencia; OBSERVATIONAL EVIDENCE FOR BLACK HOLES IN THE UNIVERSE; 2008

University of Kolkata - India

We present sub-second fast photometry for the high mass X-ray binary Cygnus X-1. We try to observe variability due to instabilities in the accretion process at optical wavelengths. The observations were carried out using the high speed AstraLux camera at the Calar Alto 2.2 m telescope, Spain, in November 2006 and August 2007. We report that the Cygnus X-1 system light curve sampled every 30 milli-second did not display strong enough evidence of any periodic component related to the source. ©2008 American Institute of Physics