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Merging massive black holes: the right place and the right time

Lamberts, Astrid (2017) Merging massive black holes: the right place and the right time. In: Gravitational Wave Astrophysics: Early Results from Gravitational Wave Searches and Electromagnetic Counterparts. IAU Symposium Proceedings Series. Vol.13. No.338. Cambridge University Press , Cambridge, pp. 40-45. ISBN 9781107192591.

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The LIGO/Virgo detections of gravitational waves from merging black holes of ≃ 30 solar mass suggest progenitor stars of low metallicity (Z/Z⊙ ≲ 0.3). In this talk I will provide constrains on where the progenitors of GW150914 and GW170104 may have formed, based on advanced models of galaxy formation and evolution combined with binary population synthesis models. First I will combine estimates of galaxy properties (star-forming gas metallicity, star formation rate and merger rate) across cosmic time to predict the low redshift BBH merger rate as a function of present day host galaxy mass, formation redshift of the progenitor system and different progenitor metallicities. I will show that the signal is dominated by binaries formed at the peak of star formation in massive galaxies with and binaries formed recently in dwarf galaxies. Then, I will present what very high resolution hydrodynamic simulations of different galaxy types can learn us about their black hole populations.

Item Type:Book Section
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URLURL TypeDescription Paper
Lamberts, Astrid0000-0001-8740-0127
Additional Information:© 2019 International Astronomical Union.
Subject Keywords:galaxies: abundances, stellar content; stars: binaries, black holes, evolution; gravitational waves
Series Name:IAU Symposium Proceedings Series
Issue or Number:338
Record Number:CaltechAUTHORS:20190107-101213822
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Official Citation:Lamberts, A. (2017). Merging massive black holes the right place and the right time. Proceedings of the International Astronomical Union, 13(S338), 40-45. doi:10.1017/S1743921318000182
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:92108
Deposited By: Tony Diaz
Deposited On:07 Jan 2019 18:23
Last Modified:03 Oct 2019 20:41

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