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Accretion Disc flickering

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About this observation
Observer
Gary Poyner
Time of observation
20/12/2016 - 10:01
Object
1RXS J053234.9+624755
Observing location
Birmingham
Equipment
35cm SCT
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1RXS J053234.9+624755 was in outburst during April 2005 when this observation was made.  I found it difficult to make an observation because the magnitude was jumping all over the place.  I had seen DNe flickering before but not to this extent - nearly one magnitude in 20 seconds.  I decided to monitor it for as long as possible so made an estimate every 10 seconds for 24 minutes.  After this time I couldn't trust my eyes as they were feeling strained so I stopped.  The data was later analysed by a professional and confirmed to be real flickering within the system and not due to atmospheric seeing. Flickering in CV's is not well understood, and is probably a disc phenomenon although a school of thought suggests the mass transfer stream.  Whatever the cause it's amazing to watch, especially at this sort of amplitude.

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Whitters's picture

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Gary that is an amazing observation, are there any theories of what drives such rapid changes in luminosity? Is it related to material hitting the accretion disk?

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