Possible short annihilation flashes in the 1978 November 4 gamma-ray burst

Details Possible short annihilation flashes in the 1978 November 4 gamma-ray burst Possible short annihilation flashes in the 1978 November 4 gamma-ray burst

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...286l..11b&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 286, Nov. 1, 1984, p. L11-L13. Sponsorship: Centre

Astronomy and Astrophysics

Astronomy

20

Annihilation Reactions, Energy Spectra, Gamma Ray Bursts, International Cooperation, Scintillation Counters, Spaceborne Astronomy, Electron-Positron Pairs, France, U.S.S.R., Venera 11 Satellite, Venera 12 Satellite

Scientific paper

The NaI(Tl) scintillators of the Signe experiments aboard the Venera 11 and 12 spacecraft allow gamma-ray burst spectral analyses to be conducted with a time resolution of 250 ms. Attention is presently given to the less than 250 ms long, intense (up to 28 percent of the continuum energy) spectral features which appear in the spectra obtained by Signe for the November 4, 1978 event around 400 keV. These features are interpreted as possible e(-)/e(+) pair-annihilation flashes.

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