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Black holes are usually observed to be of stellar-mass or supermassive. By natural extension, there should be a population of Intermediate-Mass Black Holes (IMBHs: with mass between $100$ to $10^6 M_{\odot}$) in the Universe; which has…

Astrophysics of Galaxies · Physics 2020-06-24 Paramita Barai , Elisabete M. de Gouveia Dal Pino

Accretion of matter onto central Black Holes (BHs) in galaxies liberates enormous amounts of feedback energy, which influence the formation and evolution of structures, affecting the environment from pc to Mpc scales. These BHs are usually…

Astrophysics of Galaxies · Physics 2019-03-15 Paramita Barai , Elisabete M. de Gouveia Dal Pino

We examine the effects of galaxy outflows on the formation of dwarf galaxies in numerical simulations of the high-redshift Universe. Using a Smoothed Particle Hydrodynamic code, we conduct two detailed simulations of a (5.2 Mpc/h)^3…

Astrophysics · Physics 2009-10-31 Evan Scannapieco , Robert J. Thacker , Marc Davis

This study investigates the influence of intermediate-mass black holes (IMBHs) on galactic morphology, focusing on their evolution within dwarf galaxies at high redshift (z~2). Using high-resolution zoom-in cosmological simulations, we…

Astrophysics of Galaxies · Physics 2025-01-22 Da Bi , Dominik R. G. Schleicher , Andres Escala

We investigate the effects of massive black hole growth on the structural evolution of dwarf galaxies within the Romulus25 cosmological hydrodynamical simulation. We study a sample of 228 central, isolated dwarf galaxies with stellar masses…

Astrophysics of Galaxies · Physics 2021-09-28 Ray Sharma , Alyson Brooks , Rachel S. Somerville , Michael Tremmel , Jillian Bellovary , Anna Wright , Thomas Quinn

Intermediate-mass black holes (IMBHs: masses between $100 - 10^{6} M_{\odot}$) historically comprise of an elusive population compared to stellar-mass and supermassive BHs. Recently IMBHs have started to be observed at the centers of…

Astrophysics of Galaxies · Physics 2019-06-19 Paramita Barai , Elisabete M. de Gouveia Dal Pino

Intermediate-mass black holes (IMBHs) may provide the missing link to understanding the growth of supermassive black holes in the early Universe. Some formation scenarios predict that IMBHs could have formed by runaway collisions in…

Astrophysics of Galaxies · Physics 2015-06-17 Nora Lützgendorf , Holger Baumgardt , J. M. Diederik Kruijssen

The detection of Intermediate-Mass Black Holes (IMBHs) in dwarf galaxies is crucial to closing the gap in the wide mass distribution of black holes ($\sim 3 \, \rm M_{\odot}$ to $\sim 5 \times 10^{10} \, \rm M_{\odot}$). IMBHs originally…

Astrophysics of Galaxies · Physics 2022-02-15 Emma Jane Weller , Fabio Pacucci , Lars Hernquist , Sownak Bose

Outflows produced by a supermassive black hole (SMBH) can have important feedback effects in its host galaxy. An unresolved question is the nature and properties of winds from SMBHs accreting at low rates in low-luminosity active galactic…

High Energy Astrophysical Phenomena · Physics 2020-01-30 Ivan Almeida , Rodrigo Nemmen

We investigate the impact of galactic outflow modelling on the formation and evolution of a disc galaxy, by performing a suite of cosmological simulations with zoomed-in initial conditions of a Milky Way-sized halo. We verify how sensitive…

We present measurements of galactic outflow rates from the EAGLE suite of cosmological simulations. We find that gas is removed from the interstellar medium (ISM) of central galaxies with a dimensionless mass loading factor that scales…

Astrophysics of Galaxies · Physics 2020-04-15 Peter D. Mitchell , Joop Schaye , Richard G. Bower , Robert A. Crain

In order to constrain the density of intermediate-mass black holes (IMBHs) in galaxies, we run smoothed particle hydrodynamics (SPH) simulations of a gas-rich disc dwarf galaxy, where different halo and disc populations of IMBHs are…

Astrophysics · Physics 2008-11-26 M. Mapelli

Relativistic outflows (mainly observed in the radio) are a characteristic feature of both Galactic stellar mass black holes and supermassive black holes (SMBHs). Simultaneous radio and X-ray observations of Galactic sources have shown that…

Astrophysics · Physics 2009-11-13 E. Churazov , S. Sazonov , R. Sunyaev , W. Forman , C. Jones , H. Boehringer

We have carried out 2D hydrodynamical simulations in order to study the interaction between supernova-powered gas outflows from low-mass galaxies and the local intergalactic medium (IGM). We are specifically interested in investigating…

Astrophysics · Physics 2009-10-31 I. Murakami , A. Babul

We perform high-resolution hydrodynamical simulations using the framework of {\it MACER} to investigate supermassive black hole (SMBH) feeding and feedback in a massive compact galaxy, which has a small effective radius but a large stellar…

Astrophysics of Galaxies · Physics 2023-05-31 Yihuan Di , Yuan Li , Feng Yuan , Fangzheng Shi , Mirielle Caradonna

Recent observational studies of ultra-compact dwarf galaxies (UCDs) have discovered massive black holes (MBHs) with masses of more than ${10^6~\rm M_\odot}$, in their central regions. We here consider that these MBHs can be formed through…

Astrophysics of Galaxies · Physics 2020-06-17 Henriette Wirth , Kenji Bekki

At low redshift, the majority of supermassive black hole (SMBH) mass estimates are obtained from modeling stellar kinematics or ionized gas dynamics in the vicinity of the galaxy nucleus. For large early type galaxies, stellar kinematics…

High Energy Astrophysical Phenomena · Physics 2019-09-06 Britton Jeter , Avery E. Broderick , B. R. McNamara

Ultrafast outflows (UFOs) from supermassive black holes (SMBHs) are thought to regulate the growth of SMBHs and host galaxies, resulting in a number of observational correlations. We present high-resolution numerical simulations of the…

Astrophysics of Galaxies · Physics 2015-06-03 Martin A. Bourne , Sergei Nayakshin , Alexander Hobbs

We examine the evolution of the inner dark matter (DM) and baryonic density profile of a new sample of simulated field galaxies using fully cosmological, Lambda CDM, high resolution SPH + N-Body simulations. These simulations include…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 F. Governato , A. Zolotov , A. Pontzen , C. Christensen , S. H. Oh , A. M. Brooks , T. Quinn , S. Shen , J. Wadsley

We have categorized possible transonic solutions of galactic outflows in the gravitational potential of DMH and SMBH using the isothermal, spherically symmetric and steady model. We conclude that the gravitational potential of SMBH…

Astrophysics of Galaxies · Physics 2015-06-19 Asuka Igarashi , Masao Mori , Shin-ya Nitta
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