[en] 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.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Biggs, A. D.
Browne, I. W. A.
Wilkinson, P. N.
Muxlow, T. W. B.
Helbig, Phillip ; Kapteyn Astronomical Institute, Postbus 800, NL-9700 AV Groningen, the Netherlands
Koopmans, L. V. E.
Kochanek, Christopher S.
Language :
English
Title :
B0218+357: Time Delays and New MERLIN/VLA 5 GHz Maps of the Einstein Ring
Publication date :
01 January 2001
Event name :
Gravitational Lensing: Recent Progress and Future Goals
Event date :
from 25-07-1999 to 30-07-1999
Audience :
International
Main work title :
Gravitational Lensing: Recent Progress and Future Goals
