[vsnet-chat 2275] (fwd) Re: Strong oscillation in Nova Cir 1999?

[Taichi Kato <tkato>]

From brian.fraser@Macsteel.co.za Thu Sep  2 15:25 JST 1999
From: "brian.fraser" <brian.fraser@Macsteel.co.za>
To: Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>
Subject: RE: [vsnet-chat 2273] Strong oscillation in Nova Cir 1999?
Date: Thu, 2 Sep 1999 08:14:47 +0200 
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Hello Taichi,
I was thinking about  this topic when I came upon this possible explanation.
It looks to me as though each observer has his "personal bias" ie when he is
in doubt he goes for a lower estimate or maybe a higher estimate.
So you are looking at the results from one or two observers in Australia,
one or two in South America, some in South Africa.  If an active observer in
Australia is consistently over-estimating the magnitude (just by 0.1 or 0.2)
and an observer in South Africa is consistently under-estimating, it could
quite easily look as though there was a one day cycle.  Maybe this is what
is happening??
Just a thought,
regards,
Brian Fraser

=======================================================
Trust in God but lock your car.

Brian Fraser
Tel 27 11 871-0370
Fax 27 11 871-0226
email brian.fraser@macsteel.co.za


> -----Original Message-----
> From:	Taichi Kato [SMTP:tkato@kusastro.kyoto-u.ac.jp]
> Sent:	Wednesday, September 01, 1999 4:41 PM
> To:	vsnet-chat@kusastro.kyoto-u.ac.jp
> Subject:	[vsnet-chat 2273] Strong oscillation in Nova Cir 1999?
> 
> Strong oscillation in Nova Cir 1999?
> 
>    Upon examination of the reported data, I have noticed the nova may be
> oscillating with a period close to 1 d.  On Aug. 24 and 25, the nova
> faded by nearly 1 mag within 12 hours, and recovered (not well covered
> by observations).  Has anyone noticed this phenomenon?
> 
> Regards,
> Taichi Kato

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