A BATSE measurement of the Galactic positron annihilation line

Details A BATSE measurement of the Galactic positron annihilation line A BATSE measurement of the Galactic positron annihilation line

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..410.1012s&link_type=abstract

The fourth compton symposium. AIP Conference Proceedings, Volume 410, pp. 1012-1016 (1997).

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Galactic Center, Bar, Circumnuclear Matter, And Bulge, Gamma-Ray, Elementary Particle Processes

Scientific paper

A specialized background subtraction technique has produced a measurement of the total 511 keV positron-annihilation flux from the inner Galaxy with the BATSE LADs: (1.49+/-0.02)×10-3 ph cm-2 s-1. The positronium fraction is found to be (0.91+/-0.02) assuming a power law for the underlying continuum. This result is reproduced consistently in four consecutive yearly data sets. We compare it to other results from wide-field-of-view instruments and discuss future plans for the analysis.

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