Discovery of a 2 Kpc Binary Quasar

Details Discovery of a 2 Kpc Binary Quasar Discovery of a 2 Kpc Binary Quasar

2001-04-13

arxiv.org/abs/astro-ph/0104236v1

Astronomy and Astrophysics

Astrophysics

6 pages LATEX with 2 EPS figures; uses epsfig, aipproc. Proceedings of the 20th Texas Symposium on Relativistic Astrophysics,

Scientific paper

10.1063/1.1419583

LBQS 0103$-$2753 is a binary quasar with a separation of only 0.3 arcsec. The projected spacing of 2.3 kpc at the distance of the source (z = 0.848) is much smaller than that of any other known binary QSO. The binary nature is demonstrated by the very different spectra of the two components and the low probability of a chance pairing. LBQS 0103$-$2753 presumably is a galaxy merger with a small physical separation between the two supermassive black holes. Such objects may provide important constraints on the evolution of binary black holes and the fueling of AGN.

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