Počet záznamů: 1
Plunging neutron stars as origin of organised magnetic field in galactic nuclei
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SYSNO ASEP 0484602 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Plunging neutron stars as origin of organised magnetic field in galactic nuclei Tvůrce(i) Karas, Vladimír (ASU-R) RID, ORCID
Kopáček, Ondřej (ASU-R) RID, ORCID
Kunneriath, D. (DE)
Zajaček, M. (DE)
Araudo, Anabella (ASU-R) ORCID
Eckart, A. (DE)
Kovář, J. (CZ)Zdroj.dok. Contributions of the Astronomical Observatory Skalnaté Pleso. - : Slovenská akadémia vied - ISSN 1335-1842
Roč. 47, č. 2 (2017), s. 124-132Poč.str. 9 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. SK - Slovensko Klíč. slova magnetic fields ; neutron stars ; galactic centre Vědní obor RIV BN - Astronomie a nebeská mechanika, astrofyzika Obor OECD Astronomy (including astrophysics,space science) CEP GA17-16287S GA ČR - Grantová agentura ČR LD15061 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora ASU-R - RVO:67985815 UT WOS 000410733700008 EID SCOPUS 85030628775 Anotace Black holes cannot support their own internal magnetic field like, for example, compact stars can. Despite this fact observations indicate that event horizons of supermassive black holes (SMBH) are threaded by field lines along which plasma streams flow. Various magnetohydrodynamical mechanisms have been suggested to generate turbulent magnetic fields on small scales, however, the origin of the large-scale component is unclear. In this write-up we describe our progress in an on-going work and discuss the possibility of dipole-type magnetic fields being brought onto SMBH by magnetised neutron stars, which are expected to drift inward from a hidden population in the Nuclear Star Cluster. This can contribute to an organised component of the magnetic field on the characteristic length-scale of the stellar size, which thread the horizon during the final stages of the magnetized star plunge into or its close flyby around SMBH. Because of mass size scaling relations for black holes, the effect is more important for lower-mass SMBH. Pracoviště Astronomický ústav Kontakt Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Rok sběru 2018
Počet záznamů: 1