V4641 Sgr: New activity of the fast X-ray nova
An extremely fast X-ray nova, V4641 Sgr, which experienced a giant
outburst in 1999 September, was reported to show a renewed activity,
possibly mini-outburst, in X-ray and radio range
(vsnet-campaign-xray 9).
R. Hjellming noticed to T. Kato and he forwarded that on early July 17
they detected it as a 1.6 mJy source at 8.4 GHZ and the source had resumed
optical activity a week ago
(vsnet-campaign-xray 11).
Through the optical
observation at Kyoto on July 18, it was confirmed that the object seems
to be calm at 13.39mag
(vsnet-campaign-xray 15).
R. Hjellming reported
that it is close to a constant source of about 1.2 mJy within the error bars.
So, while V4641 Sgr has returned to producing a radio source, it is
definitely not a short time scale radio event
(vsnet-campaign-xray 20).