The 160-min pulsation period in the SMM solar hard X-ray burst data

Details The 160-min pulsation period in the SMM solar hard X-ray burst data The 160-min pulsation period in the SMM solar hard X-ray burst data

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984pazh...10..235k&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 10, Mar. 1984, p. 235-240) Soviet Astronomy Letters (ISSN 0360-0327), vol. 10, Mar.-Apr

Astronomy and Astrophysics

Astronomy

Solar Maximum Mission, Solar Oscillations, Solar Spectra, Solar X-Rays, Power Spectra, Solar Flux Density

Scientific paper

Data on 2100 25-350-keV solar X-ray bursts obtained by the hard-X-ray-burst spectrometer of the SMM satellite (Wagner, 1982) over its entire period of operation in 1980-1981 and 400 1-min SMM observations of the 3.2-A line of Ca XIX on June 24-28, 1980, are analyzed statistically in terms of possible effects of the 160.010-min solar pulsations reported by Severnyi et al. (1976) and Kotov et al. (1983). The power spectrum of the Ca XIX measurements is calculated and plotted, and the superposed-epochs technique is applied to the burst observations. Both sets of data are shown to found to exhibit intensity modulations with the 160-min period; the significance of the burst periodicity is determined as about 0.001.

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