[vsnet-chat 5542] Fw: Re: Fw: How common is substantial, very fast variability?

[Daisaku NOGAMI <nogami@kwasan.kyoto-u.ac.jp>]

Begin forwarded message:

Date: Fri, 27 Sep 2002 01:41:28 -0700 (PDT)
From: Lew Cook <lcoo@yahoo.com>
Subject: Re: [vsnet-chat 5540] Fw: How common is substantial, very fast variability?

In CV's it is fairly common in my experience - flickering
is present in stars like MV Lyr (among others). I did a bit
of analysis on that star a couple years ago. A typical
night's light surve is included in the write-up that
appeared in Perseus (in Czech) an english language version
of the submitted paper is at
http://vsnet.geocities.com/lcoo/mvly1999.htm
That will show you the type of variation I mean. Others,
more qualified than I, can explain it.

=====
Regards, Lew 
p.s. I have been working on the upgrade to my telescope. I posted a few pictures at 
http://vsnet.geocities.com/lcoo/eng29.htm

> From: Michael Rupen <mrupen@aoc.nrao.edu>
> To: aavso-discussion@informer2.cis.McMaster.CA
> Subject: [AAVSO-DIS] How common is substantial, very fast
> variability?
> 
> 
> Dear all,
> 
>   I'm a radio astronomer, so this may be a silly
> question...but here goes.
> I've been struck recently by a couple sources reported on
> VSNet which showed
> extremely rapid & large optical variations (V4641 Sgr
> back in May, and now
> UW Pic; timescales of order 1hr or less, and variations
> up to a magnitude).
> How common is this sort of rapid variability?  and what
> sort of sources
> exhibit it?

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