Search for microquasar features in cosmic ray spectra with AMS-01

Details Search for microquasar features in cosmic ray spectra with AMS-01 Search for microquasar features in cosmic ray spectra with AMS-01

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004phdt........29m&link_type=abstract

Ph.D dissertation, 2004. United States -- Massachusetts: Massachusetts Institute of Technology; 2004. Publication Number: AAT 08

Computer Science

1

Microquasar, Cosmic Ray, X-Ray Binaries, Plasma Jets

Scientific paper

Accreting x-ray binaries are sometimes observed to emit compact, relativistic jets of cool plasma; these objects are called "microquasars". It is possible that these jets are responsible for a large flux of galactic cosmic ray protons and nuclei. The energy spectrum from these sources will be very different from the featureless power-law expected from ordinary cosmic-ray acceleration in supernova shocks. The AMS-01 instrument measured cosmic ray protons and helium during 10 days on the Space Shuttle Discovery in 1998; we analyze this data searching for spectral distortions due to nearby microquasar activity. We show that the microquasar contribution to the CR proton flux can be no more than ~2% in the range 2-50 GeV. (Copies available exclusively from MIT Libraries, Rm. 14-0551, Cambridge, MA 02139-4307. Ph. 617-253-5668; Fax 617-253-1690.)

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