COBE Observations of the Microwave Counterparts of Gamma Ray Bursts

Details COBE Observations of the Microwave Counterparts of Gamma Ray Bursts COBE Observations of the Microwave Counterparts of Gamma Ray Bursts

1995-06-08

arxiv.org/abs/astro-ph/9506064v1

Astronomy and Astrophysics

Astrophysics

5 pages, LaTEX

Scientific paper

10.1007/BF00658644

We have used the data from the COBE satellite to search for delayed microwave emission (31 - 90 GHz) from Gamma Ray Bursts (GRBs). The large $7^\circ$ beam of COBE is well matched to the large positional uncertainties in the GRB locations, although it also means that fluxes from (point source) GRB objects will be diluted. In view of this we are doing a statistical search of the GRBs which occurred during the currently released COBE DMR data (years 1990 and 1991), which overlap $\sim 200$ GRBs recorded by GRO. Here we concentrate on just the top 10 GRBs (in peak counts/second). We obtain the limits on the emission by comparing the COBE fluxes before and after the GRB at the GRB location. Since it is thought that the microwave emission should lag the GRB event, we have searched the GRB position for emission in the few months following the GRB occurrence.

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