VLBI Observations of the double QSO, 0957 + 561 A, B

descriptionPublicationkeyboard_double_arrow_right Article 01 Nov 1979 United Kingdom English Publisher:Springer Science and Business Media LLCJournal:Nature, volume 282, pages 385-386 (issn: 0028-0836, eissn: 1476-4687,

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Authors: Porcas, R. W.; Booth, R. S.; Browne, I. W A; Walsh, D.; Wilkinson, P. N.;

doi: 10.1038/282385a0

VLBI Observations of the double QSO, 0957 + 561 A, B

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Abstract

Walsh et al.1 originally suggested that the double QSO 0957 + 561 A, B might be images of the same object formed by a gravitational lens because of their remarkably similar optical spectra. Additional optical spectral data2 strengthen the evidence for a gravitational lens. Radio data at 5 GHz have shown a complex structure3,4. There are compact (

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