Narasimha, D. ; Subramanian, K. ; Chitre, S. M. (1984) Gravitational lens model of the double QSO 0957 + 561 A,B incorporating VLBI features Monthly Notices of the Royal Astronomical Society, 210 . pp. 79-88. ISSN 0035-8711
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Official URL: http://adsabs.harvard.edu/abs/1984MNRAS.210...79N
Abstract
The twin quasar QSO 0957 + 561 A,B along with bright radio arches and VLBI structures is modeled using a gravitational lens consisting of the giant elliptical galaxy and the background cluster. The effective time-delay between components A and B comes out to be around one year, which is significantly different from the value obtained by Young et al. for a similar set of lens parameters. It is demonstrated that the observed intensity variation in component B between 1979 and mid-1981, reported by Keel (1982) can result from minilensing by low mass stars.
| Item Type: | Article |
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| Source: | Copyright of this article belongs to Royal Astronomical Society. |
| ID Code: | 5822 |
| Deposited On: | 19 Oct 2010 10:50 |
| Last Modified: | 16 May 2016 16:16 |
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