Asymmetric 511 Kev Positron Annihilation Line Emission From The Inner Galactic Disk

Details Asymmetric 511 Kev Positron Annihilation Line Emission From The Inner Galactic Disk Asymmetric 511 Kev Positron Annihilation Line Emission From The Inner Galactic Disk

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008head...10.1032s&link_type=abstract

American Astronomical Society, HEAD meeting #10, #10.32

Astronomy and Astrophysics

Astronomy

Scientific paper

A recently reported asymmetry in the 511 keV gamma-ray line emission from the inner galactic disk is unexpected. It mimics an equally unexpected one in the distribution of LMXBs seen at hard X-ray energies. A possible conclusion is that LMXBs are an important source of the positrons whose annihilation gives rise to the line. We will discuss these results, their statistical significance and that of any link between the two. The implication of any association between LMXBs and positrons for the strong annihilation radiation from the galactic bulge will be reviewed.

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