On the electron-positron annihilation line in 3C 273

Details On the electron-positron annihilation line in 3C 273 On the electron-positron annihilation line in 3C 273

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aipc..232..453r&link_type=abstract

IN: Gamma-ray line astrophysics; Proceedings of the International Symposium, Paris, France, Dec. 10-13, 1990 (A92-43619 18-90).

Astronomy and Astrophysics

Astronomy

Active Galaxies, Positron Annihilation, Red Shift, Synchrotron Radiation, Very Long Base Interferometry, Magnetic Field Configurations, Radio Astronomy, X Ray Astronomy

Scientific paper

The electron-positron annihilation losses of the extended lobe in 3C 273 are estimated by assuming that the feature is a relativistic electron-positron plasma with a low-energy cutoff. The annihilation losses are found to be approximately equal to 1.8 x 10 exp 36 erg/s in the lobe. The X-ray background of the lobe at values between 200 KeV and a few MeV is expected to be affected by the electron-positron annihilation lines from galaxies with redshifts of not more than 4.

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