Annihilation of positrons from ²²Na in novae

2021/03/08 by Н. Н. Чугай, Chugai, N. N., A. D. Kudryashov +1
Physics and Astronomy · #Astrophysical Phenomena and Observations #Atomic and Molecular Physics #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #X-ray Spectroscopy and Fluorescence Analysis

paper · pdf · doi:10.48550/arxiv.2103.04716

openalex publication_date 2021/03/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We explore for the first time effects of the magnetic field on the escape of ²²Na positrons and on the flux evolution of annihilation 511 keV line in novae. It is shown that for the white dwarf magnetic field of ∼ 10⁶ G the field of the expanding nova shell is able to significantly impede positrons escape and increase the time of the nova emission in 511keV up to hundreds days.

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