The Galactic Positron Annihilation Radiation & The Propagation of Positrons in the Interstellar Medium

Autor:	Higdon, J. C., Lingenfelter, R. E., Rothschild, R. E.
Rok vydání:	2007
Předmět:	Astrophysics
Zdroj:	Astrophys.J.698:350-379,2009
Druh dokumentu:	Working Paper
DOI:	10.1088/0004-637X/698/1/350
Popis:	We consider positron propagation in the interstellar medium and show that the positrons from the beta-plus decay chains of the radioactive nuclei Ni-56, Ti-44, and Al-26, produced in Galactic supernovae, can fully account for all the features of the diffuse Galactic 511 keV annihilation radiation observed by INTEGRAL/SPI. We also predict additional measurable features that can further test the origin of positrons and provide new information on the nature of the interstellar medium. Comment: 40 pages, 4 postscript figures, 7 tables, accepted for publication in the Astrophysical Journal, volume 698, June 2009
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0711.3008 Zobrazit plný text záznamu View this record from Arxiv