Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976ap%26ss..42...63o&link_type=abstract
(COSPAR, Symposium on Fast Transients in X- and Gamma-Rays, Varna, Bulgaria, May 29-31, 1975.) Astrophysics and Space Science, v
Astronomy and Astrophysics
Astronomy
4
Atmospheric Ionization, Cosmic X Rays, Gamma Rays, Ion Production Rates, Ionospheric Propagation, X Ray Astronomy, Ion Recombination, Ionospheric Electron Density, Lower Ionosphere, Nocturnal Variations, Power Spectra, Very Low Frequencies
Scientific paper
Calculations are presented of the amount of excess ionization produced in the lower ionosphere by various transient X- and gamma-ray bursts under different assumptions about the incident spectrum and the ion recombination rates in the ionosphere. These calculations show that the bursts will have only a small effect on the ionosphere, due in part to their short duration. An experiment has been started to measure the power spectrum of the phase and amplitude of the night-time fluctuations of a CW signal in order to determine if it is possible to improve the sensitivity of the ionospheric technique by using the transient nature of the bursts. Preliminary results from this experiment are presented.
Baird G. A.
Omongain E.
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