|23rd of February 2015|
|Real-time discovery of a fast radio burst (FRB)|
|by Ryan Shannon (CASS) & Vikram Ravi (University of Melbourne)|
|Ravi, Shannon and Jameson (2015) report the real-time
discovery, in 2013, of a fast radio burst (FRB 131104) with the Parkes radio
telescope, in a targeted observation of the Carina dwarf spheroidal galaxy.
The dispersion measure of the burst is 779 cm-3 pc, exceeding
predictions for the maximum line-of-sight Galactic contribution by a factor
of 11. Ravi et al. hypothesize that the burst is associated with the Carina
dwarf galaxy. Follow-up observations at other wavelengths are necessary to
test this hypothesis. |
The left image shows the position of the Carina dwarf spheroidal galaxy (large ellipse), the centre positions of all 13 beams (small circles) from the Parkes 21-cm multibeam system, with the beam in which the FRB 131104 was detected marked. The right image shows the signature of FRB 131104 in a time vs frequency diagram.