Magnetized black holes: The role of rotation, boost, and accretion in twisting the ﬁeld lines and accelerating particles

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F23%3A00604648" target="_blank" >RIV/67985815:_____/23:00604648 - isvavai.cz</a>
Result on the web
<a href="https://www.worldscientific.com/doi/epdf/10.1142/9789811269776_0333" target="_blank" >https://www.worldscientific.com/doi/epdf/10.1142/9789811269776_0333</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1142/9789811269776_0333" target="_blank" >10.1142/9789811269776_0333</a>

Result language
angličtina
Original language name
Magnetized black holes: The role of rotation, boost, and accretion in twisting the ﬁeld lines and accelerating particles
Original language description
Combined inﬂuence of rotation of a black hole and ambient magnetic ﬁelds creates con-ditions for powerful astrophysical processes of accretion and outﬂow of matter which areobserved in many systems across the range of masses, from stellar-mass black holes in bi-nary systems to supermassive black holes in active galactic nuclei. We study a simpliﬁedmodel of outﬂow of electrically charged particles from the inner region of an accretiondisk around a spinning (Kerr) black hole immersed in a large-scale magnetic ﬁeld. Inparticular, we consider a non-axisymmetric magnetosphere where the ﬁeld is misalignedwith the rotation axis. In this contribution we extend our previous analysis of acceler-ation of jet-like trajectories of particles escaping from bound circular orbits around ablack hole. While we have previously assumed the initial setup of prograde (co-rotating)orbits, here we relax this assumption and we also consider retrograde (counter-rotating)motion. We show that the eﬀect of counter-rotation may considerably increase the prob-ability of escape from the system, and it allows more eﬃcient acceleration of escapingparticles to slightly higher energies compared to the co-rotating disk
Czech name
—
Czech description
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Project
<a href="/en/project/8JCH1080" target="_blank" >8JCH1080: Czech-Chinese collaboration for the new X-ray mission eXTP: Spectral modelling and data analysis</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
The Sixteenth Marcel Grossmann Meeting: On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics, and Relativistic Field Theories
ISBN
978-981-12-6976-9
ISSN
—
e-ISSN
—
Number of pages
11
Pages from-to
3999-4009
Publisher name
World Scientific
Place of publication
Singapur - SG
Event location
online
Event date
Jul 5, 2021
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
001229112700329

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