[vsnet-campaign-xray 182] Re: XTE J1720-318 radio counterpart

[Gregory Tsarevsky <Gregory.Tsarevsky@atnf.csiro.au>]

Examination of five B and R historic plates provided by the USNO B1.0
DSS Image and Catalogue Archive (POSSI, SRCJ, ESOR and AAOR surveys)
shows nothing down to R = ~20.0; B = ~21.0 at the position of
M. Rupen et al. (IAUC 8054).
Also nothing seen there at the CCD image by B. Monard taken at the
time of the XTE J1720-318 burst ( R >= ~18.0 ), see VSNET announcement
of 17 Jan 2003. Possibly Berto would estimate better this upper limit.

Gregory Tsarevsky, virtual observer

ATNF, Sydney

PS: Interesting to note that NVSS is actually an abbreviation of
    abbreviations and means NRAO VLA Sky Survey. Not Northern one
    as in IAUC 8054. Otherwise the source under consideration,
    XTE J1720-318, would be forced to be northern. But it is not.
Gr.

On Tue, 21 Jan 2003, Taichi Kato wrote:

> XTE J1720-318 radio counterpart
>
>    According to IAUC 8054, Rupen et al. reports the discovery of a
> a new radio source, which is likely the counterpart of XTE J1720-318.
>
>    The J2000.0 position of the new source is
>
>    17h 19m 59s.062 (+/-0s.087)
>    -31o 44' 59".7 (+/-1".10)
>
>    The position is 1'.4 from the original X-ray position.
>
> Regards,
> Taichi Kato

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