Measuring TeV Cosmic Ray Electrons in the Earth's Magnetic Field

Details Measuring TeV Cosmic Ray Electrons in the Earth's Magnetic Field Measuring TeV Cosmic Ray Electrons in the Earth's Magnetic Field

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008head...10.0204s&link_type=abstract

American Astronomical Society, HEAD meeting #10, #2.04

Astronomy and Astrophysics

Astronomy

Scientific paper

Galactic cosmic-ray electrons are thought to be shock accelerated in supernova remnants as evident from observations of non-thermal X-rays and TeV gamma rays. It is expected that above about 1 TeV the local electron spectrum reflects distribution and abundance of nearby acceleration sites. Rates at these energies are low however and current and past electron detectors, typically flown by high altitude balloons, were limited by their short exposure times and small apertures. CREST, a balloon-borne detector array of 1024 BaF2 crystals will measure the intensity and spectrum of multi-TeV electrons by detecting the synchrotron photons emitted from electrons passing through the earth's magnetic field. Thus CREST's acceptance is several times its geometric area providing sensitivity up to about 50 TeV. Following an engineering flight in 2008 CREST will be flown in a circumpolar orbit on an upcoming Antarctic long duration balloon flight.

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