Sw J1644+57 (GRB 110328A): Continued VLBA Observations

Details Sw J1644+57 (GRB 110328A): Continued VLBA Observations Sw J1644+57 (GRB 110328A): Continued VLBA Observations

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011atel.3522....1b&link_type=abstract

The Astronomer's Telegram, #3522

Astronomy and Astrophysics

Astronomy

Radio, Agn, Black Hole, Blazar, Gamma-Ray Burst, Transient

Scientific paper

We have obtained a second epoch of long-baseline interferometry with the VLBA of the unusual high-energy transient Sw J1644+57 (GRB 110328A; Levan et al, Science, 333, 199, 2011; Bloom et al, Science, 333, 203, 2011; Burrows et al., astro-ph/1104.4787; Zauderer et al., astro-ph/1106.3568). Observations were obtained on 2011 July 17 at 8.4 and 22 GHz with recording bandwidth of 512 Mbps. Preliminary analysis of images at both frequencies reveals a compact (i.e., unresolved) source with flux densities of 15 and 12 mJy, respectively.

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