Recurrence of Radio Counterpart of V4641 Sgr (=XTE J1819-254)

Details Recurrence of Radio Counterpart of V4641 Sgr (=XTE J1819-254) Recurrence of Radio Counterpart of V4641 Sgr (=XTE J1819-254)

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000atel...61....1h&link_type=abstract

The Astronomer's Telegram, #61

Astronomy and Astrophysics

Astronomy

3

Radio, Request For Observations, Black Holes, Transients, Stars

Scientific paper

On 2000 July 17.23 UT VLA 1-km array observations detected recurrence of radio emission from V4641 Sgr (=XTE J1819-254) at a level of 1.6 mJy at 8.4 GHz. On July 18.13 UT it was 0.6, 0.9, 1.1, and 1.2 mJy at 1.49, 4.9, 8.4, and 14.9 GHz, corresponding to a spectrum of ~0.53*nuGHz^(-0.35) mJy. This is much weaker than the peak 400 mJy levels seen in its September 1999 outburst.

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