[vsnet-campaign-xray 160] [FWD] Re: [FWD] 4U 1630-47 radio upper limit

[Hitoshi YAMAOKA <yamaoka@rc.kyushu-u.ac.jp>]

>Date: Wed, 25 Sep 2002 08:33:36 +0200
From: Erik Kuulkers <ekuulker@rssd.esa.int>
Subject: Re: [FWD] 4U 1630-47 radio upper limit

Dear all,

> Hitoshi YAMAOKA wrote:
>
> [FWD] 4U 1630-47 radio upper limit
>
> # 4U 1630-47 is a reccurent blackhole x-ray transcient.  The period
> # for outbursts is 600 - 700 days, and it experienced giant outburst
> # in 1998 Feb.  No optical counterpart has been detected so far.  A
> # new X-ray outburst was detected on Sept. 13. (vsnet-campaign-xray
> # 157).
 
Note that there is a IR counterpart reported by Augusteijn et al.
(2001, A&A 375, 447).

Erik Kuulkers

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