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Analysis of narrow spikes in two cosmic gamma-ray bursts

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Abstract

An analysis has been made of the narrow intensity spikes occurring in two cosmic gammaray bursts which were observed with a fast time resolution germanium spectrometer on board the low altitude polar orbiting satellite 1972-076B (Imhofet al., 1974a, 1975; Nakanoet al., 1974a). The bursts on 18 December, 1972 and 21 July, 1973, were also recorded on the Vela satellite system. The durations of three spikes were observed to be ∼0.06 s with the limits being 0.03 to 0.10 s. Four other narrow spikes were measured to have time width limits between 0.001 and 0.10 s. An additional eight spikes had widths less than 0.9 s. During the spikes, the gamma-ray intensities increased by factors of ∼2 to ∼10, with a median value of ∼3. These and other characteristics of the fast time structure are presented.

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Authors and Affiliations

  1. Lockheed Palo Alto Research Laboratory, Palo Alto, Calif., USA

    W. L. Imhof, G. H. Nakano & J. B. Reagan

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  1. W. L. Imhof
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  2. G. H. Nakano
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  3. J. B. Reagan
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Imhof, W.L., Nakano, G.H. & Reagan, J.B. Analysis of narrow spikes in two cosmic gamma-ray bursts. Astrophys Space Sci 42, 43–47 (1976). https://doi.org/10.1007/BF00645522

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