GRB 110328A: VLBA Observations

Details GRB 110328A: VLBA Observations GRB 110328A: VLBA Observations

Apr 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011atel.3269....1b&link_type=abstract

The Astronomer's Telegram, #3269

Astronomy and Astrophysics

Astronomy

1

Radio, Gamma-Ray Burst, Transient

Scientific paper

We observed the variable radio counterpart (GCNs 11836, 11848) of GRB110328A / Swift J164449.3+573451 (GCNs 11823, 11824) with the Very Long Baseline Array (VLBA) and Effelsberg Radio Telescope for 7 hours beginning on April 2 at 6:00 UT. Observations at both telescopes were carried out at a central frequency of 8.46 GHz. Based on a preliminary analysis of the VLBA baselines alone, we report a significant detection (SNR=29) of the source at position: RA: 16 44 49.9313 DEC: 57 34 59.6895 with a conservative error estimate of 0.5 mas dominated by the positional uncertainty of the phase calibrator, J1638+5720.

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