Growth of black holes at the centre of early-type galaxies in MOND
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10509578" target="_blank" >RIV/00216208:11320/25:10509578 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=DxgLLG95lv" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=DxgLLG95lv</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/pasa.2025.10034" target="_blank" >10.1017/pasa.2025.10034</a>
Alternative languages
Result language
angličtina
Original language name
Growth of black holes at the centre of early-type galaxies in MOND
Original language description
The formation of supermassive black holes (SMBHs) in early-type galaxies (ETGs) is a key challenge for galaxy formation theories. Using the monolithic collapse models of ETGs formed in Milgromian Dynamics (MOND) from 2022MNRAS.516.1081E, we investigate the conditions necessary to form SMBHs in MOND and test whether these systems adhere to observed SMBH-galaxy scaling relations. We analyse the evolution of the gravitational potential and gas inflow rates in the model relics with a total stellar mass ranging from 0.1x10(11)M(circle dot) to 0.7x10(11)M(circle dot). The gravitational potential exhibits a rapid deepening during the initial galaxy formation phase, accompanied by high gas inflow rates. These conditions suggest efficient central gas accumulation capable of fuelling SMBH formation. We further examine the MBH-sigma relation by assuming that a fraction of the central stellar mass contributes to black hole formation. Black hole masses derived from 10%-100 % of the central mass are comparable with the observed relation, particularly at higher central velocity dispersions (sigma>200km/s). This highlights the necessity of substantial inner mass collapse to produce SMBHs consistent with observations. Our results demonstrate that MOND dynamics, through the rapid evolution of the gravitational potential and sustained gas inflows, provide a favourable environment for SMBH formation in ETGs. These findings support the hypothesis that MOND can naturally account for the observed SMBH-galaxy scaling relations without invoking cold dark matter, emphasizing the importance of early gas dynamics in determining final SMBH properties.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Publications of the Astronomical Society of Australia
ISSN
1323-3580
e-ISSN
1448-6083
Volume of the periodical
42
Issue of the periodical within the volume
cerven
Country of publishing house
AU - AUSTRALIA
Number of pages
7
Pages from-to
e065
UT code for WoS article
001515297700001
EID of the result in the Scopus database
2-s2.0-105005649776