Periodicity of the gamma-ray transient event of 5 March 1979

Details Periodicity of the gamma-ray transient event of 5 March 1979 Periodicity of the gamma-ray transient event of 5 March 1979

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980natur.285..383t&link_type=abstract

Nature, vol. 285, June 5, 1980, p. 383-385. Research supported by the U.S. Department of Energy and NASA.

Astronomy and Astrophysics

Astronomy

33

Gamma Ray Astronomy, Supernova Remnants, Neutron Stars, Pioneer Venus 1 Spacecraft, Power Spectra, Stellar Radiation, Time Response

Scientific paper

An unusual gamma-ray burst event was observed on 5 March 1979 by nine different spacecraft. The position of the event has been accurately determined as r.a. = 5 h 25.95 min, dec = -66 deg 07.1 arcmin (epoch 1950.0), coincident with the location of the supernova remnant N49 in the Large Magellanic Cloud. The burst was of very high intensity, and if isotropic and located at the distance (approximately 55 kpc) of N49 had a peak luminosity of greater than 10 to the 44th erg/sec. Even more interesting is the obvious 8-s periodicity of the event, following the initial very intense outburst. The time history and power spectrum of this event as determined from Pioneer Venus Orbiter data is here reported.

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