A simple formula for the thermal pair annihilation line emissivity

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We introduce a simple and convenient fitting formula for the thermal annihilation line from pair plasmas in cosmic sources. The fitting formula is accurate to 0.04\% and is valid at all photon energies and temperatures of interest. The commonly used Gaussian line profile is not a good approximation for broader lines.
4 pages; l-aa style; 2 postscript figures; Proceedings of 3rd Compton Gamma-Ray Observatory Symposium, Munich, 1995

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Astrophysics

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http://salesiana.dossiersoluciones.com/handle/123456789/10560

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/astro-ph/9607069
 http://arxiv.org/abs/astro-ph/9607069

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arXiv