Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006atel..727....1t&link_type=abstract
The Astronomer's Telegram, #727
Astronomy and Astrophysics
Astronomy
8
Radio, Millimeter, Request For Observations, Binaries, Black Holes
Scientific paper
We report that the microquasar Cyg X-3 is undergoing a significant radio flare and would request for followup observations at all frequencies. In the current multi-frequency monitoring observations with RATAN-600 radio telescope, the flux density at 4.8 GHz of the source was found to drop from 103 mJy on Jan 14.4 (UT) to 43 mJy on Jan 15.4 (UT), and to 22 mJy on Jan 17.4 (UT). The source is known to exhibit the radio flares typically with a few peaks exceeding 5 Jy following such quenched state (Waltman et al., 1994, AJ, 108, 179).
Fujisawa Katsuki
Japanese VLBI Network Team
Kawai Nobuyuki
Kotani Takao
Kuno Nario
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