Evidence that cosmic γ-ray bursts are galactic

Abstract

OBSERVATIONS from our latest balloon flight and a burst observed by Nishimura et al. combined with our previous results and the observations of Bewick et al. provide strong evidence that cosmic γ-ray bursts are galactic. It also seems that the recently discovered X-ray bursts and γ-ray bursts have a common origin. A further 41 h of balloon flight time with the University of California, Riverside (UCR) double Compton scatter γ-ray telescope gave no additional γ-ray bursts. This flight time is added to the earlier 24 h observation of Herzo et al.¹ who found three bursts with total energy greater than 1×10^minus;6 erg cm^minus;2 and one burst with total energy greater than 4×10^minus;6 erg cm^minus;2 to give lower values for the number of bursts of (8⁺⁸₋₃) × 10² and (3⁺⁷₋₁) × 10² d⁻¹, respectively.