Se p 19 99 B 0218 + 357 : Time Delays and New MERLIN / VLA 5 GHz Maps of the Einstein Ring
نویسندگان
چکیده
This poster presents a new 5 GHz combined MERLIN/VLA map of B0218+357 which shows for the first time believable substructure in the Einstein ring. This will now be exploited for further constraints on the model which presently dominates the error on the estimate of H 0 derived from the time delay (10.5±0.4 days) measured for this system.
منابع مشابه
MERLIN / VLA imaging of the gravitational lens system B 0218 + 357 A . D . Biggs , ⋆
Gravitational lenses offer the possibility of accurately determining the Hubble parameter (H0) over cosmological distances, and B0218+357 is one of the most promising systems for an application of this technique. In particular this system has an accurately measured time delay (10.5 ± 0.4 d; Biggs et al. 1999) and preliminary mass modelling has given a value for H0 of 69 +13 −19 kms −1 Mpc. The ...
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