Imprints of recoiling massive black holes on the hot gas of early-type galaxies
dc.contributor.author | Devecchi, B. | en_US |
dc.contributor.author | Rasia, E. | en_US |
dc.contributor.author | Dotti, Massimo | en_US |
dc.contributor.author | Volonteri, Marta | en_US |
dc.contributor.author | Colpi, M. | en_US |
dc.date.accessioned | 2010-06-01T22:47:38Z | |
dc.date.available | 2010-06-01T22:47:38Z | |
dc.date.issued | 2009-04-01 | en_US |
dc.identifier.citation | Devecchi, B.; Rasia, E.; Dotti, M.; Volonteri, M.; Colpi, M. (2009). "Imprints of recoiling massive black holes on the hot gas of early-type galaxies." Monthly Notices of the Royal Astronomical Society 394(2): 633-640. <http://hdl.handle.net/2027.42/75758> | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.issn | 1365-2966 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/75758 | |
dc.description.abstract | Anisotropic gravitational radiation from a coalescing black hole (BH) binary is known to impart recoil velocities of up to ∼1000 km s −1 to the remnant BH. In this context, we study the motion of a recoiling BH inside a galaxy modelled as a Hernquist sphere, and the signature that the hole imprints on the hot gas, using N -body/smoothed particle hydrodynamics simulations. Ejection of the BH results in a sudden expansion of the gas ending with the formation of a gaseous core, similarly to what is seen for the stars. A cometary tail of particles bound to the BH is initially released along its trail. As the BH moves on a return orbit, a nearly spherical swarm of hot gaseous particles forms at every apocentre: this feature can live up to ≈10 8 years. If the recoil velocity exceeds the sound speed initially, the BH shocks the gas in the form of a Mach cone in density near each supersonic pericentric passage. We find that the X-ray fingerprint of a recoiling BH can be detected in Chandra X-ray maps out to a distance of Virgo. For exceptionally massive BHs, the Mach cone and the wakes can be observed out to a few hundred of milliparsec. The detection of the Mach cone is of twofold importance as it can be a probe of high-velocity recoils, and an assessment of the scatter of the M BH − M bulge relation at large BH masses. | en_US |
dc.format.extent | 15663584 bytes | |
dc.format.extent | 3109 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.publisher | Blackwell Publishing Ltd | en_US |
dc.rights | Journal compilation © 2009 RAS | en_US |
dc.subject.other | Black Hole Physics | en_US |
dc.subject.other | Gravitational Waves | en_US |
dc.subject.other | Hydrodynamics | en_US |
dc.subject.other | Methods: Numerical | en_US |
dc.subject.other | Galaxies: Nuclei | en_US |
dc.subject.other | X-rays: Galaxies | en_US |
dc.title | Imprints of recoiling massive black holes on the hot gas of early-type galaxies | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Astronomy | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA | en_US |
dc.contributor.affiliationum | Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA | en_US |
dc.contributor.affiliationother | Dipartimento di Fisica G. Occhialini, UniversitÀ degli Studi di Milano Bicocca, Piazza della Scienza 3, 20126 Milano, Italy | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/75758/1/j.1365-2966.2008.14329.x.pdf | |
dc.identifier.doi | 10.1111/j.1365-2966.2008.14329.x | en_US |
dc.identifier.source | Monthly Notices of the Royal Astronomical Society | en_US |
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