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Pair Annihilation and Radio Emission from Nova Muscae

D. C. Hannikainen, C. R. Kaiser

astro-pharXiv:astro-ph/0208086

Abstract

In the hard X-ray spectra of some X-ray binaries line features around 500 keV are detected. We interpret these as arising from pair annihilation in relativistic outflows leading to a significant Doppler shift of the frequencies of the lines. We show that a small fraction of pairs escaping the annihilation region may give rise to the radio synchrotron emission observed in Nova Muscae 1991.

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