Cosmic ray electrons and positrons from 1--100 GeV: HEAT balloon measurements

Details Cosmic ray electrons and positrons from 1--100 GeV: HEAT balloon measurements Cosmic ray electrons and positrons from 1--100 GeV: HEAT balloon measurements

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aps..apr..m709d&link_type=abstract

American Physical Society, APS/AAPT Joint April Meeting, April 18-21, 1998 Columbus, Ohio, abstract #M7.09

Physics

Scientific paper

Observations of the cosmic ray electron and positron energy spectra have been performed with the balloon-borne ``High-Energy Antimatter Telescope'' (HEAT) flown in May 1994 from Fort Sumner, NM, and May 1995 from Lynn Lake, Manitoba in Canada. We summarize the instrument procedures and data analysis, and we present the results, combined from the two flights. These include determinations of the absolute energy spectra of electrons and positrons from 1--50 GeV, and the combined ``all-electron'' spectrum (e^++e^-) up to 100 GeV. We discuss the results in the context of current models of cosmic ray propagation in the Galaxy and find no strong evidence for contributions to the positron intensity beyond purely secondary origin from nuclear interactions in the ISM.

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