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Asymmetric 511 keV Positron Annihilation Line Emission from the Inner Galactic DiskA recently reported asymmetry in the 511 keV gamma-ray line emission from the inner galactic disk is unexpected and 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.
Document ID
20080031148
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Skinner, Gerry
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Weidenspointner, Georg
Jean, Pierre
Knodlseder, Jurgen
Ballmoos, Perer von
Bignami, Giovanni
Diehl, Roland
Strong, Andrew
Cordier, Bertrand
Schanne, Stephane
Winkler, Christoph
Date Acquired
August 24, 2013
Publication Date
March 31, 2008
Subject Category
Astronomy
Funding Number(s)
CONTRACT_GRANT: NNG06EO90A
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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