Energetics of Buchdahl stars and the magnetic Penrose process

J 2024

Energetics of Buchdahl stars and the magnetic Penrose process

SHAYMATOV, Sanjar, Naresh DADHICH a Arman TURSUNOV

Základní údaje

Originální název

Energetics of Buchdahl stars and the magnetic Penrose process

Autoři

SHAYMATOV, Sanjar, Naresh DADHICH (356 Indie) a Arman TURSUNOV (860 Uzbekistán, domácí)

Vydání

European Physical Journal C, New York (USA), SPRINGER, 2024, 1434-6044

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 4.400 v roce 2022

Organizační jednotka

Fyzikální ústav v Opavě

DOI

http://dx.doi.org/10.1140/epjc/s10052-024-13419-9

UT WoS

001330673600001

Klíčová slova anglicky

results VII polarization;rotating black hole;energy extraction;electromagnetic field;quadrupole moments;horizon;particles

Štítky

RIV25

Příznaky

Mezinárodní význam, Recenzováno

Návaznosti

GA23-07043S, projekt VaV.

Změněno: 4. 2. 2025 13:13, Mgr. Pavlína Jalůvková

Anotace

V originále

Buchdahl star is the most compact object without an event horizon and is an excellent candidate for a black hole mimicker. Unlike black holes, rotating Buchdahl star can beover-extremal with respect to the black hole, sustaining a larger spin. We show that it can also develop an ergosphere above the threshold spin beta > 1/root 2, which allows extractionof its rotational energy. Electromagnetic field around Buch-dahl star is also expected to differ from that of black hole in both strength and topology. In this paper, we explore the energetics of Buchdahl star focusing on the magnetic Pen-rose process in the two magnetic field configurations, i.e.,uniform and dipole. Below the threshold spin, Buchdahl staris expected to be quiet, while above the threshold it can be much more efficient than the black hole if a dipolar magnetic field is developed on its surface

Citovat

SHAYMATOV, Sanjar, Naresh DADHICH a Arman TURSUNOV. Energetics of Buchdahl stars and the magnetic Penrose process. European Physical Journal C. New York (USA): SPRINGER, 2024, roč. 84, č. 10, s. "1015-1"-"1015-12", 12 s. ISSN 1434-6044. Dostupné z: https://dx.doi.org/10.1140/epjc/s10052-024-13419-9.

@article{83141,
   author = {Shaymatov, Sanjar and Dadhich, Naresh and Tursunov, Arman},
   article_location = {New York (USA)},
   article_number = {10},
   doi = {http://dx.doi.org/10.1140/epjc/s10052-024-13419-9},
   keywords = {results VII polarization;rotating black hole;energy extraction;electromagnetic field;quadrupole moments;horizon;particles},
   language = {eng},
   issn = {1434-6044},
   journal = {European Physical Journal C},
   title = {Energetics of Buchdahl stars and the magnetic Penrose process},
   url = {https://link.springer.com/article/10.1140/epjc/s10052-024-13419-9},
   volume = {84},
   year = {2024}
}

TY  - JOUR
ID  - 83141
AU  - Shaymatov, Sanjar - Dadhich, Naresh - Tursunov, Arman
PY  - 2024
TI  - Energetics of Buchdahl stars and the magnetic Penrose process
JF  - European Physical Journal C
VL  - 84
IS  - 10
SP  - "1015-1"-"1015-12"
EP  - "1015-1"-"1015-12"
PB  - SPRINGER
SN  - 14346044
KW  - results VII polarization;rotating black hole;energy extraction;electromagnetic field;quadrupole moments;horizon;particles
UR  - https://link.springer.com/article/10.1140/epjc/s10052-024-13419-9
N2  - Buchdahl star is the most compact object without an event horizon and is an excellent candidate for a black hole mimicker. Unlike black holes, rotating Buchdahl star can beover-extremal with respect to the black hole, sustaining a larger spin. We show that it can also develop an ergosphere above the threshold spin beta > 1/root 2, which allows extractionof its rotational energy. Electromagnetic field around Buch-dahl star is also expected to differ from that of black hole in both strength and topology. In this paper, we explore the energetics of Buchdahl star focusing on the magnetic Pen-rose process in the two magnetic field configurations, i.e.,uniform and dipole. Below the threshold spin, Buchdahl staris expected to be quiet, while above the threshold it can be much more efficient than the black hole if a dipolar magnetic field is developed on its surface
ER  -

SHAYMATOV, Sanjar, Naresh DADHICH a Arman TURSUNOV. Energetics of Buchdahl stars and the magnetic Penrose process. \textit{European Physical Journal C}. New York (USA): SPRINGER, 2024, roč.~84, č.~10, s.~''1015-1''-''1015-12'', 12 s. ISSN~1434-6044. Dostupné z: https://dx.doi.org/10.1140/epjc/s10052-024-13419-9.

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