Early detection of the optical counterpart to GRB 980329

Details Early detection of the optical counterpart to GRB 980329 Early detection of the optical counterpart to GRB 980329

1999-06-11

arxiv.org/abs/astro-ph/9906208v1

Astron.Astrophys. 347 (1999) L31-L34

Astronomy and Astrophysics

Astrophysics

4 pages with three encapsulated PostScript figure included. Accepted for publication as a letter in Astronomy & Astrophysics

Scientific paper

We report optical observations of the GRB 980329 error box which represent the second earliest detection of the GRB 980329 optical transient. We determine R = 23.7 $\pm$ 0.5 mag on 29.89 March, which is consistent with R = 23.6 $\pm$ 0.2 mag as reported by Palazzi et al. (1998) on 29.99 March. Based on extrapolations of the light curve we claim that the R-band magnitude of the GRB 980329 host galaxy should lie in the range 26.8 mag $<$ R $<$ 29 mag. We also discuss the similarities with GRB 970111.

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