NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Fermi GBM Observations of Terrestrial Gamma FlashesIn its first two years of operation, the Fermi Gamma Ray Burst Monitor (GBM) has observed more than 77 Terrestrial Gamma Flashes (TGFs). The thick Bismuth Germanate (BGO) detectors are excellent for TGF spectroscopy, having a high probability of recording the full energy of an incident photon, spanning a broad energy range from 150 keV to 40 MeV, and recording a large number of photons per TGF. Correlations between GBM TGF triggers and lightning sferics detected with the World-Wide Lightning Location Network indicate that TGFs and lightning are simultaneous to within tens of microseconds. The energy spectra of some TGFs have strong 511 keV positron annihilation lines, indicating that these TGFs contain a large fraction of positrons
Document ID
20100040603
Acquisition Source
Marshall Space Flight Center
Document Type
Abstract
Authors
Wilson-Hodge, Colleen A. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Briggs, M. S. (Alabama Univ. Huntsville, AL, United States)
Fishman, G. J. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Bhat, P. N. (Alabama Univ. Huntsville, AL, United States)
Paciesas, W. S. (Alabama Univ. Huntsville, AL, United States)
Preece, R. (Alabama Univ. Huntsville, AL, United States)
Kippen, R. M. (Los Alamos National Lab. Albuquerque, NM, United States)
von Kienlin, A.
Dwyer, J. R.
Smith, D. M. (California Univ. Santa Cruz, CA, United States)
Holzworth, R.
Date Acquired
August 24, 2013
Publication Date
September 8, 2010
Subject Category
Astronomy
Report/Patent Number
M10-0872
Meeting Information
Meeting: Scineghe2010 - 8th Workshop on Science with the New Generation of High Energy Gamma-Ray Experiments: Gamma-Ray Astrophysics in the Multimessenger Context
Location: Trieste, Italy
Country: Italy
Start Date: September 8, 2010
End Date: September 10, 2010
Distribution Limits
Public
Copyright
Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available