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Possible evidence for the ejection of a supermassive black hole from an ongoing merger of galaxies

Haehnelt, MG ; Davies, Melvyn B LU and Rees, MJ (2006) In Monthly Notices of the Royal Astronomical Society 366(1). p.22-25
Abstract
Attempts of Magain et al. to detect the host galaxy of the bright quasi-stellar object (QSO) HE0450-2958 have not been successful. We suggest that the supermassive black hole (SMBH) powering the QSO was ejected from the observed ultraluminous infrared galaxy (ULIRG) at the same redshift and at 1.5 arcsec distance. Ejection could have been caused either by recoil due to gravitational wave emission from a coalescing binary of SMBHs or the gravitational slingshot of three or more SMBHs in the ongoing merger of galaxies which triggered the starburst activity in the ULIRG. We discuss implications for the possible hierarchical build-up of SMBHs from intermediate and/or stellar mass black holes, and for the detection of coalescing supermassive... (More)
Attempts of Magain et al. to detect the host galaxy of the bright quasi-stellar object (QSO) HE0450-2958 have not been successful. We suggest that the supermassive black hole (SMBH) powering the QSO was ejected from the observed ultraluminous infrared galaxy (ULIRG) at the same redshift and at 1.5 arcsec distance. Ejection could have been caused either by recoil due to gravitational wave emission from a coalescing binary of SMBHs or the gravitational slingshot of three or more SMBHs in the ongoing merger of galaxies which triggered the starburst activity in the ULIRG. We discuss implications for the possible hierarchical build-up of SMBHs from intermediate and/or stellar mass black holes, and for the detection of coalescing supermassive binary black holes by LISA. (Less)
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
galaxies : nuclei, general, binaries :, celestial mechanics, black hole physics, stellar dynamics
in
Monthly Notices of the Royal Astronomical Society
volume
366
issue
1
pages
22 - 25
publisher
Oxford University Press
external identifiers
  • wos:000234876700006
  • scopus:33646472371
ISSN
1365-2966
DOI
10.1111/j.1745-3933.2005.00124.x
language
English
LU publication?
yes
id
951950e9-81dc-4801-a174-22fe4c39863d (old id 419349)
date added to LUP
2016-04-01 12:15:58
date last changed
2020-11-22 04:36:13
@article{951950e9-81dc-4801-a174-22fe4c39863d,
  abstract     = {Attempts of Magain et al. to detect the host galaxy of the bright quasi-stellar object (QSO) HE0450-2958 have not been successful. We suggest that the supermassive black hole (SMBH) powering the QSO was ejected from the observed ultraluminous infrared galaxy (ULIRG) at the same redshift and at 1.5 arcsec distance. Ejection could have been caused either by recoil due to gravitational wave emission from a coalescing binary of SMBHs or the gravitational slingshot of three or more SMBHs in the ongoing merger of galaxies which triggered the starburst activity in the ULIRG. We discuss implications for the possible hierarchical build-up of SMBHs from intermediate and/or stellar mass black holes, and for the detection of coalescing supermassive binary black holes by LISA.},
  author       = {Haehnelt, MG and Davies, Melvyn B and Rees, MJ},
  issn         = {1365-2966},
  language     = {eng},
  number       = {1},
  pages        = {22--25},
  publisher    = {Oxford University Press},
  series       = {Monthly Notices of the Royal Astronomical Society},
  title        = {Possible evidence for the ejection of a supermassive black hole from an ongoing merger of galaxies},
  url          = {http://dx.doi.org/10.1111/j.1745-3933.2005.00124.x},
  doi          = {10.1111/j.1745-3933.2005.00124.x},
  volume       = {366},
  year         = {2006},
}