TY - JOUR

T1 - Conversion of Protons to Positrons by a Black Hole

AU - Dolgov, A. D.

AU - Rudenko, A. S.

N1 - This work was supported by the Russian Science Foundation under grant no. 22-12-00103.

PY - 2024/8/14

Y1 - 2024/8/14

N2 - The conversion of protons to positrons at the horizon of a black hole (BH) is considered. It is shown that the process may efficiently proceed for BHs with masses in the range – g. It is argued that the electric charge of BH acquired by the proton accretion to BH could create electric field near BH horizon close to the critical Schwinger one. It leads to efficient electron-positron pair production, when electrons are back captured by the BH while positrons are emitted into outer space. Annihilation of these positrons with electrons in the interstellar medium may at least partially explain the origin of the observed 511 keV line.

AB - The conversion of protons to positrons at the horizon of a black hole (BH) is considered. It is shown that the process may efficiently proceed for BHs with masses in the range – g. It is argued that the electric charge of BH acquired by the proton accretion to BH could create electric field near BH horizon close to the critical Schwinger one. It leads to efficient electron-positron pair production, when electrons are back captured by the BH while positrons are emitted into outer space. Annihilation of these positrons with electrons in the interstellar medium may at least partially explain the origin of the observed 511 keV line.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85201257249&origin=inward&txGid=857ecee307a47a35070acea27b6fe630

UR - https://www.mendeley.com/catalogue/59dd7ffe-e37b-3d0d-9feb-d66d067be602/

U2 - 10.1134/S1547477124700821

DO - 10.1134/S1547477124700821

M3 - Article

VL - 21

SP - 865

EP - 872

JO - Physics of Particles and Nuclei Letters

JF - Physics of Particles and Nuclei Letters

SN - 1547-4771

IS - 4

ER -