The relation between accretion rate and jet power in early-type galaxies with thermally unstable hot atmospheres

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F22%3A00564026" target="_blank" >RIV/67985815:_____/22:00564026 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/22:00127110

Result on the web

<a href="https://doi.org/10.1093/mnras/stac2770" target="_blank" >https://doi.org/10.1093/mnras/stac2770</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/stac2770" target="_blank" >10.1093/mnras/stac2770</a>

Result language

angličtina

Original language name

The relation between accretion rate and jet power in early-type galaxies with thermally unstable hot atmospheres

Original language description

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).

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

<a href="/en/project/GX21-13491X" target="_blank" >GX21-13491X: Exploring the Hot Universe and Understanding Cosmic Feedback</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

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

Name of the periodical

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

1365-2966

Volume of the periodical

517

Issue of the periodical within the volume

3

Country of publishing house

GB - UNITED KINGDOM

Number of pages

29

Pages from-to

3682-3710

UT code for WoS article

000874073200003

EID of the result in the Scopus database

2-s2.0-85145260008