Particle acceleration and magnetic field amplification in the termination shocks of AGN jets

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F18%3A00500105" target="_blank" >RIV/67985815:_____/18:00500105 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Particle acceleration and magnetic field amplification in the termination shocks of AGN jets
Original language description
Relativistic shocks in extragalactic sources have been proposed as sources of ultra high energy cosmic rays. However, theoretical advances indicate that relativistic shocks are unable to accelerate particles to energies largen than 1 PeV. We study relativistic jets in Active Galactic Nuclei, where the maximum energy of electrons accelerated in the termination shocks is 1 TeV. We show that this maximum energy cannot be constrained by synchrotron losses as usually assumed, and we propose that it is determined by the geometry of the (unperturbed) magnetic field. If the maximum energy of electrons is determined by the perpendicular magnetic field, the same limit applies to protons and therefore the maximum energy of ions is also 1 TeV. As a consequence, relativistic jet termination shocks are poor cosmic ray accelerators.
Czech name
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Czech description
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Project
<a href="/en/project/GB14-37086G" target="_blank" >GB14-37086G: Albert Einstein Center for Gravitation and Astrophysics</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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