Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991asee.nasaq....m&link_type=abstract
In Alabama Univ., Research Reports: 1991 NASA/ASEE Summer Faculty Fellowship Program 5 p (SEE N92-15850 06-80)
Astronomy and Astrophysics
Astronomy
Detection, Electron Density (Concentration), Gamma Ray Bursts, Ionospheric Disturbances, Radio Astronomy, Solar Flares, Fluence, Ionization, Position (Location), Very Low Frequencies
Scientific paper
The specific aim of the project at hand is to study the changes in amplitude and phase of VLF radio waves to see if we can detect the ionospheric disturbance (the change in electron density) caused by a Gamma-Ray burst. The possible advantages of observing gamma-ray bursts through ionospheric disturbances are better localization of burst directions through a large network of VLF receiving points; measurement of total ionizing fluence of gamma-ray bursts; and comparison with satellite data (GOES and GRO) to derive properties of the ionosphere. There is a major problem here: the ionospheric disturbance caused by a Gamma-Ray burst is at best extremely difficult and at worse impossible to detect. So far only one vent has been detected via this method. Therefore, it was decided to study the ionospheric disturbance caused by solar flares first with the hope that they will teach us how to detect the elusive Gamma-Ray bursts. Much is to be learned about the ionosphere and its reaction to impulsive ionization.
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