A quasar companion to the puzzling quasar SDSS J0927+2943

We report the discovery of a quasar close to SDSS J0927+2943 (z = 0.713), which is a massive binary/recoiling black hole candidate. The companion quasar is at a projected distance of 125 $h_{70}^{-1}$ kpc and exhibits a radial velocity difference of ~1400 km s-1 with respect to the known quasar. We...

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Bibliographic Details
Published in:Astronomy and astrophysics (Berlin) 2010-02, Vol.511, p.A27
Main Authors: Decarli, R., Falomo, R., Treves, A., Barattini, M.
Format: Article
Language:English
Subjects:
Astronomy
Earth, ocean, space
Exact sciences and technology
quasars: emission lines
quasars: general
quasars: individual: SDSS J092712.65+294344.0
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Summary:We report the discovery of a quasar close to SDSS J0927+2943 (z = 0.713), which is a massive binary/recoiling black hole candidate. The companion quasar is at a projected distance of 125 $h_{70}^{-1}$ kpc and exhibits a radial velocity difference of ~1400 km s-1 with respect to the known quasar. We discuss the nature of this peculiar quasar pair and the properties of its environment. We propose that the overall system is caught in the process of ongoing structure formation.
ISSN:0004-6361
1432-0746
DOI:10.1051/0004-6361/200913760