Uhecr acceleration capabilities of the nearby supermassive black holes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F20%3AA0000098" target="_blank" >RIV/47813059:19630/20:A0000098 - isvavai.cz</a>
Result on the web
<a href="https://indico.cern.ch/event/851173/attachments/1960505/3658688/sbornikkonference.pdf" target="_blank" >https://indico.cern.ch/event/851173/attachments/1960505/3658688/sbornikkonference.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Uhecr acceleration capabilities of the nearby supermassive black holes
Original language description
The origin and acceleration mechanism of ultra-high-energy cosmic rays (UHECRs) with energy exceeding the GZK-cutoff remain unknown. It is often speculated that supermassive black holes (SMBHs) located at the centers of many galaxies can serve as possible sources of UHECRs. This is also supported by recent detections of high-energy neutrinos from blazar, as neutrinos are the tracers of UHECRs. In this contribution we explore the capabilities of some SMBHs to accelerate UHECR protons of certain energies by the induced electric field generated due to frame-dragging effect of twisting of magnetic field lines near horizon of rotating SMBHs. In particular, we study the ionization of freely-falling neutral particles, such as the hydrogen ionization or neutron beta-decay in the vicinity of SMBHs immersed into external magnetic field and calculate the energies of escaping protons after the ionization. We choose 25 nearby SMBH candidates (within 100 Mpc) with measured and estimated masses, spins and magnetic fields, for which we present a table with mean proton energy and explore their acceleration capabilities.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
20th Conference of Czech and Slovak Physicists, Proceedings
ISBN
9788089855131
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
181-185
Publisher name
Slovak Physical Society, Czech Physical Society
Place of publication
Košice, Slovensko
Event location
Prague, Czech republic
Event date
Sep 7, 2020
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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