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All-Sky Earth Occultation Observations with the Fermi Gamma Ray Burst MonitorUsing the Gamma Ray Burst Monitor (GBM) on-board Fermi, we are monitoring the hard X-ray/soft gamma ray sky using the Earth occultation technique. Each time a source in our catalog is occulted by (or exits occultation by) the Earth, we measure its flux using the change in count rates due to the occultation. Currently we are using CTIME data with 8 energy channels spanning 8 keV to 1 MeV for the GBM NaI detectors and spanning 150 keV to 40 MeV for the GBM BGO detectors. Our preliminary catalog consists of galactic X-ray binaries, the Crab Nebula, and active galactic nuclei. New sources are added to our catalog as they become active or upon request. In addition to Earth occultations, we have observed numerous occultations with Fermi's solar panels. We will present early results. Regularly updated results will be found on our website http://gammaray.nsstc.nasa.gov/gbm/science/occultation.
Document ID
20100017098
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Wilson-Hodge, C. A. (National Space Science and Technology Center Huntsville, AL, United States)
Beklen, E. (National Space Science and Technology Center Huntsville, AL, United States)
Bhat, P. N. (National Space Science and Technology Center Huntsville, AL, United States)
Briggs, M. (National Space Science and Technology Center Huntsville, AL, United States)
Camero-Arranz, A. (National Space Science and Technology Center Huntsville, AL, United States)
Case, G. (National Space Science and Technology Center Huntsville, AL, United States)
Chaplin, V. (National Space Science and Technology Center Huntsville, AL, United States)
Cherry, M. (National Space Science and Technology Center Huntsville, AL, United States)
Connaughton, V. (National Space Science and Technology Center Huntsville, AL, United States)
Finger, M. (National Space Science and Technology Center Huntsville, AL, United States)
Jenke, P. (National Space Science and Technology Center Huntsville, AL, United States)
Paciesas, W. (National Space Science and Technology Center Huntsville, AL, United States)
Preece, R. (National Space Science and Technology Center Huntsville, AL, United States)
Rodi, J. (National Space Science and Technology Center Huntsville, AL, United States)
Date Acquired
August 24, 2013
Publication Date
March 1, 2010
Subject Category
Astronomy
Report/Patent Number
M10-0126
M10-0094
Meeting Information
Meeting: High Energy Astrophysics Division of American Astronomical Society (HEAD) 2010
Location: Big Island, HI
Country: United States
Start Date: March 1, 2010
End Date: March 4, 2010
Distribution Limits
Public
Copyright
Public Use Permitted.

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