A Catalog of Terrestrial Gamma-ray Flashes Observed with the Fermi-Gamma-ray Burst Monitor: The First Sixteen Months of Operation

Details A Catalog of Terrestrial Gamma-ray Flashes Observed with the Fermi-Gamma-ray Burst Monitor: The First Sixteen Months of Operation A Catalog of Terrestrial Gamma-ray Flashes Observed with the Fermi-Gamma-ray Burst Monitor: The First Sixteen Months of Operation

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmae31a..03f&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #AE31A-03

Physics

Plasma Physics

[3304] Atmospheric Processes / Atmospheric Electricity, [3324] Atmospheric Processes / Lightning, [7554] Solar Physics, Astrophysics, And Astronomy / X-Rays, Gamma Rays, And Neutrinos, [7845] Space Plasma Physics / Particle Acceleration

Scientific paper

The Gamma-ray Burst Monitor (GBM) on the Fermi Gamma-ray Space Telescope Observatory (Fermi) has been detecting on the average about one terrestrial gamma-ray flash every four weeks. This catalog presents the basic characteristics of observed TGFs from the beginning of the Fermi-GBM operation in 2008 July until 2009 October. The thick bismuth germanate (BGO) scintillation detectors of the GBM system have observed photon energies from TGFs at energies above 30 MeV. It is found that the TGF pulses are typically shorter than previously reported, and in several cases less than 0.2ms. Extremely high counting rates are encountered ~200kcps or higher per detector during portions of some TGFs. These high rates require considerable corrections (with inherent assumptions) to the observed data in order to derive the true counting rates.

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