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Intermediate-Mass Black Hole Feedback in Dwarf Galaxies: a View from Cosmological Simulations

Published online by Cambridge University Press:  07 April 2020

Paramita Barai  and
Elisabete M. de Gouveia Dal Pino
Paramita Barai
Affiliation:
Instituto de Astronomia, Geofísica e Ciências Atmosféricas - Universidade de São Paulo (IAG-USP), Rua do Matão 1226, São Paulo, 05508-090, Brasil email: paramita.barai@iag.usp.br
Elisabete M. de Gouveia Dal Pino
Affiliation:
Instituto de Astronomia, Geofísica e Ciências Atmosféricas - Universidade de São Paulo (IAG-USP), Rua do Matão 1226, São Paulo, 05508-090, Brasil email: paramita.barai@iag.usp.br
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Abstract

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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 106M⊙) in the Universe; which has started to been observed. An exciting claim has been made recently by Silk (2017): that early feedback by IMBHs in gas-rich dwarf galaxies at z = 5–8, can potentially solve multiple dwarf galaxy problems within the Λ-cold-dark-matter cosmology. We are performing Cosmological Hydrodynamical Simulations of (2Mpc)3 volumes, starting from z = 100, to test the case for IMBHs in Dwarf Galaxies. Black holes of mass 1000M⊙ are seeded inside halos when they reach a mass of 107M⊙. The black holes grow by accretion of gas from their surroundings and by merger with other black holes, and consequently eject feedback energy. We analyze the simulation output in post-processing to study the growth of the first IMBHs, and their impact on star-formation. Our conclusions, based on numerical simulation results, support the phenomenological ideas made by Silk (2017). IMBHs at the centers of dwarf galaxies can be a strong source of feedback to quench star-formation and generate outflows. At the same time, these IMBHs form the missing link between stellar-mass and supermassive BHs.

Keywords

black hole physicshydrodynamicsmethods: numericalgalaxies: activegalaxies: dwarfgalaxies: evolutiongalaxies: high-redshift(cosmology:) large-scale structure of universe
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S342: Perseus in Sicily: From Black Hole to Cluster Outskirts , May 2018 , pp. 154 - 157
Copyright
© International Astronomical Union 2020

References

Barai, P., Viel, M., Murante, G., Gaspari, M. & Borgani, S. 2014, MNRAS, 437, 145610.1093/mnras/stt1977CrossRefGoogle Scholar
Barai, P., Murante, G., Borgani, S., Gaspari, M., Granato, G. L., Monaco, P. & Ragone-Figueroa, C. 2016, MNRAS, 461, 154810.1093/mnras/stw1389CrossRefGoogle Scholar
Dashyan, G., Silk, J., Mamon, G. A., Dubois, Y. & Hartwig, T. 2017, eprint arXiv:1710.05900Google Scholar
Hahn, O. & Abel, T. 2011, MNRAS, 415, 210110.1111/j.1365-2966.2011.18820.xCrossRefGoogle Scholar
Marleau, F. R., Clancy, D., Habas, R. & Bianconi, M. 2017, A&A, 602, A28Google Scholar
Penny, S. J.et al. 2017, submitted to MNRAS, eprint arXiv:1710.07568Google Scholar
Silk, J. 2017, ApJ, 839, L13CrossRefGoogle Scholar
Springel, V. & Hernquist, L. 2003, MNRAS, 339, 28910.1046/j.1365-8711.2003.06206.xCrossRefGoogle Scholar
Springel, V. 2005, MNRAS, 364, 110510.1111/j.1365-2966.2005.09655.xCrossRefGoogle Scholar
Tornatore, L., Borgani, S., Dolag, K. & Matteucci, F. 2007, MNRAS, 382, 105010.1111/j.1365-2966.2007.12070.xCrossRefGoogle Scholar
Wiersma, R. P. C., Schaye, J. & Smith, B. D. 2009, MNRAS, 393, 9910.1111/j.1365-2966.2008.14191.xCrossRefGoogle Scholar