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Title: Black holes as antimatter factories

Abstract

We consider accretion of matter onto a low mass black hole surrounded by ionized medium. We show that, because of the higher mobility of protons than electrons, the black hole would acquire positive electric charge. If the black hole's mass is about or below 10{sup 20} g, the electric field at the horizon can reach the critical value which leads to vacuum instability and electron-positron pair production by the Schwinger mechanism. Since the positrons are ejected by the emergent electric field, while electrons are back-captured, the black hole operates as an antimatter factory which effectively converts protons into positrons.

Authors:
;  [1];  [2]
  1. Department of Physics and Astronomy, Wayne State University, Detroit, MI 48201 (United States)
  2. Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara, I-44100 Ferrara (Italy)
Publication Date:
OSTI Identifier:
22273258
Resource Type:
Journal Article
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2009; Journal Issue: 09; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ACCRETION DISKS; ASTROPHYSICS; BLACK HOLES; ELECTRIC CHARGES; ELECTRIC FIELDS; ELECTRONS; PAIR PRODUCTION; POSITRONS; PROTONS

Citation Formats

Bambi, Cosimo, Petrov, Alexey A., and Dolgov, Alexander D., E-mail: cosimo.bambi@ipmu.jp, E-mail: dolgov@fe.infn.it, E-mail: apetrov@physics.wayne.edu. Black holes as antimatter factories. United States: N. p., 2009. Web. doi:10.1088/1475-7516/2009/09/013.
Bambi, Cosimo, Petrov, Alexey A., & Dolgov, Alexander D., E-mail: cosimo.bambi@ipmu.jp, E-mail: dolgov@fe.infn.it, E-mail: apetrov@physics.wayne.edu. Black holes as antimatter factories. United States. doi:10.1088/1475-7516/2009/09/013.
Bambi, Cosimo, Petrov, Alexey A., and Dolgov, Alexander D., E-mail: cosimo.bambi@ipmu.jp, E-mail: dolgov@fe.infn.it, E-mail: apetrov@physics.wayne.edu. Tue . "Black holes as antimatter factories". United States. doi:10.1088/1475-7516/2009/09/013.
@article{osti_22273258,
title = {Black holes as antimatter factories},
author = {Bambi, Cosimo and Petrov, Alexey A. and Dolgov, Alexander D., E-mail: cosimo.bambi@ipmu.jp, E-mail: dolgov@fe.infn.it, E-mail: apetrov@physics.wayne.edu},
abstractNote = {We consider accretion of matter onto a low mass black hole surrounded by ionized medium. We show that, because of the higher mobility of protons than electrons, the black hole would acquire positive electric charge. If the black hole's mass is about or below 10{sup 20} g, the electric field at the horizon can reach the critical value which leads to vacuum instability and electron-positron pair production by the Schwinger mechanism. Since the positrons are ejected by the emergent electric field, while electrons are back-captured, the black hole operates as an antimatter factory which effectively converts protons into positrons.},
doi = {10.1088/1475-7516/2009/09/013},
journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 09,
volume = 2009,
place = {United States},
year = {2009},
month = {9}
}