X-Ray of Gamma-Ray Bursts Observable by Heao-B

On grounds of Mazetset al. (1980a) conclusion that all gamma-ray bursts recorded were emitted at the distance ≲1 kpc from the Sun it is shown that bursts from the Galaxy and from another galaxies may be observable byEinstein Observatory (HEAO-B). The HEAO-B observing programs are considered and the numbers of possibly recorded events are estimated. It is concluded that the important information about sources of gamma-bursts may be obtained in this way.