Uhecr acceleration capabilities of the nearby supermassive black holes
Identifikátory výsledku
Kód výsledku v 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>
Výsledek na webu
<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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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Uhecr acceleration capabilities of the nearby supermassive black holes
Popis výsledku v původním jazyce
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.
Název v anglickém jazyce
Uhecr acceleration capabilities of the nearby supermassive black holes
Popis výsledku anglicky
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.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
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OECD FORD obor
10308 - Astronomy (including astrophysics,space science)
Návaznosti výsledku
Projekt
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Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2020
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
20th Conference of Czech and Slovak Physicists, Proceedings
ISBN
9788089855131
ISSN
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e-ISSN
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Počet stran výsledku
5
Strana od-do
181-185
Název nakladatele
Slovak Physical Society, Czech Physical Society
Místo vydání
Košice, Slovensko
Místo konání akce
Prague, Czech republic
Datum konání akce
7. 9. 2020
Typ akce podle státní příslušnosti
EUR - Evropská akce
Kód UT WoS článku
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