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Astron. Astrophys. Suppl. Ser.
Volume 138, Number 3, September 1999
Gamma-Ray Bursts in the Afterglow Era Contents Rome, November 3-6, 1998
Page(s) 489 - 490
Published online 15 September 1999
DOI: 10.1051/aas:1999323

Astron. Astrophys. Suppl. Ser. 138, 489-490

Optical counterparts of cosmological GRBs due to heating of ISM in the parent galaxy

G.S. Bisnovatyi-Kogan1 - A.N. Timokhin 1,2

Send offprint request: A.N. Timokhin

1 - Space Research Institute, Profsoyuznaya 84/32, 117810 Moscow, Russia
2 - Sternberg Astronomical Institute, Universitetskij pr. 13, 119899 Moscow, Russia

Received January 21; accepted July 5, 1999


We investigated influence of cosmological GRB on the surrounding interstellar medium. It was shown that $\gamma$-radiation from the burst heats interstellar gas to the temperatures >104 K up to the distance $\sim10$ pc. For high density ISM, optical and UV radiation of the heated, gas can be observed on the Earth several years as a GRB's counterpart.

Key words: gamma-rays: bursts

Copyright The European Southern Observatory (ESO)

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