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1999MNRAS.303..727K - Mon. Not. R. Astron. Soc., 303, 727-735 (1999/March-2)
A new radio double lens from CLASS: B1127+385.
KOOPMANS L.V.E., DE BRUYN A.G., MARLOW D.R., JACKSON N., BLANDFORD R.D., BROWNE I.W.A., FASSNACHT C.D., MYERS S.T., PEARSON T.J., READHEAD A.C.S., WILKINSON P.N. and WOMBLE D.
Abstract (from CDS):
A two-lens mass model can explain the observed VLBA structure. The best-fitting model has a reduced χ2 of 1.1. The relative positions of the VLBA subcomponents are reproduced within 0.08 mas, and the flux density ratios within 20 per cent. We also reproduce the position angle and separation of the two VLBA subcomponents in A and B within the observational errors, which we consider strong evidence for the validity of the lens model. Moreover, we find a surface density axis ratio of 0.74+0.10–0.12 for the primary lens (G1), consistent with the surface brightness axis ratio of 0.69±0.15. Also, the surface density position angle of (4.9+28.2–22.4) of G1 compares well with the (-6±13) position angle of the surface brightness distribution. The errors indicate the 99 per cent confidence interval.
Abstract Copyright: 1999, Royal Astronomical Society
Journal keyword(s): gravitational lensing
Nomenclature: Table 1: [KDM99] AN (Nos A-B, A1-A2, B1-B2). Table 3: [KDM99] GN (Nos G1-G2).
Simbad objects: 13
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