Renewed Radio Emission from GRO J1655-40

Details Renewed Radio Emission from GRO J1655-40 Renewed Radio Emission from GRO J1655-40

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005atel..612....1b&link_type=abstract

The Astronomer's Telegram, #612

Astronomy and Astrophysics

Astronomy

5

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

Scientific paper

Following the return of the X-ray source of GRO J1655-40 to the low/hard state (ATel #607), we have continued to monitor the expected radio source with the Australia Telescope Compact Array (ATCA) and Very Large Array (VLA). Weak radio emission was detected on 21 Sept 2005, for the first time since May 2005. The flux was continuing to rise on 22 Sept. The data recorded are as follows: 20 Sept, MJD 53633.916 (VLA) <0.62 mJy (4860 MHz) 21 Sept, MJD 53634 (ATCA) 0.31+/-0.08 mJy (4800 MHz) 0.36+/-0.08 mJy (8640 MHz) 22 Sept, MJD 53635.931 (VLA) 0.66+/-0.09 mJy (4860 MHz) The ATCA data show a flat spectrum, consistent with the compact jet that is typically associated with the low/hard state.

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