Measurement of the 0.511 MeV gamma ray line from the Galactic Center

Details Measurement of the 0.511 MeV gamma ray line from the Galactic Center Measurement of the 0.511 MeV gamma ray line from the Galactic Center

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981stin...8122995j&link_type=abstract

Presented at the 2d Reunion Latino-Am. de la Union de Astron. Intern., Merida, Venezuela

Astronomy and Astrophysics

Astronomy

Galactic Radiation, Gamma Ray Astronomy, Gamma Ray Spectra, Milky Way Galaxy, Balloon-Borne Instruments, Flux (Rate), Galactic Structure, Photons, Positron Annihilation, Positrons

Scientific paper

The detection of the 0.511 MeV electron positron annihilation line coming from the Galactic Center to provide the means to estimate the rate of positron production and to test some theoretical sources of positrons is addressed. The results of the measurements of the 0.511 MeV line flux made with a gamma ray experiment on board a stratospheric balloon are presented. The detector field of view looked at the galactic longitude range -31 deg l(II) +41 deg. The observed flux is 0.0067 (+ or - 0.0005) photons 1/cm(2)5 which is in very good agreement with the expected flux when assuming that the Galactic Center is a line source emitting uniformly.

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