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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/8JCH1080" target="_blank" >8JCH1080: Česko-čínská spolupráce pro novou rentgenovou družici eXTP: Spektrální modelování a datová analýza</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

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

—

Počet stran výsledku

11

Strana od-do

3999-4009

Název nakladatele

World Scientific

Místo vydání

Singapur - SG

Místo konání akce

online

Datum konání akce

5. 7. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001229112700329