2022
The relation between accretion rate and jet power in early-type galaxies with thermally unstable hot atmospheres
PLŠEK, Tomáš, Norbert WERNER, Romana GROSSOVÁ, Martin TOPINKA, Aurora SIMIONESCU et. al.Základní údaje
Originální název
The relation between accretion rate and jet power in early-type galaxies with thermally unstable hot atmospheres
Autoři
PLŠEK, Tomáš (203 Česká republika, garant, domácí), Norbert WERNER (703 Slovensko, domácí), Romana GROSSOVÁ (703 Slovensko, domácí), Martin TOPINKA (203 Česká republika, domácí), Aurora SIMIONESCU a Steven W. ALLEN
Vydání
Monthly Notices of the Royal Astronomical Society, Oxford University Press, 2022, 0035-8711
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10308 Astronomy
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 4.800
Kód RIV
RIV/00216224:14310/22:00127110
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000874073200003
Klíčová slova anglicky
accretion; accretion discs; galaxies: active; galaxies: jets; galaxies: nuclei; radio continuum: galaxies; X-ray: galaxies
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 18. 1. 2023 13:29, Mgr. Marie Šípková, DiS.
Anotace
V originále
We use Chandra X-ray data and Very Large Array radio observations for a sample of 20 nearby, massive, X-ray bright, early-type galaxies to investigate the relation between the Bondi accretion rates and the mechanical jet powers. We find a strong correlation (rho = 0.96(-0.09)(+0.03); BF10 > 100) between the Bondi accretion power, P-Bondi, and the mechanical jet power, P-jet, for a subsample of 14 galaxies, which also host cool H alpha+[N II] line emitting gas and thus likely have thermally unstable atmospheres. The relation between the Bondi accretion power and the mechanical jet power for this subsample is well described by a power-law model log P-Bondi/10(43) erg s(-1) = alpha + beta log P-jet/10(43) erg s(-1), where alpha = 1.10 +/- 0.25 and beta = 1.10 +/- 0.24 with an intrinsic scatter sigma = 0.08(-0.06)(+0.14) dex. The results indicate that in all galaxies with thermally unstable atmospheres the cooling atmospheric gas feeds the central black holes at a similar jet-to-Bondi power ratio. For the full sample of 20 galaxies, the correlation is weaker and in a subset of galaxies with no signs of H alpha+[N II] emission, we see a hint for a systematically lower jet-to-Bondi power ratio. We also investigate the dependence of jet power on individual quantities in the Bondi formula such as the supermassive black hole mass (M-center dot) and the specific entropy of the gas (K) at the Bondi radius. For the subsample of H alpha+[N II] emitting galaxies, we find a very tight correlation of P-jet with M-center dot (rho = 0.91(-0.11)(+0.06); BF10 > 100) and, although poorly constrained, a hint of an anticorrelation for P-jet and K (rho = -0.47(-0.37)(+0.60); BF10 = 1.1).
Návaznosti
GX21-13491X, projekt VaV |
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MUNI/I/0003/2020, interní kód MU |
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