Substructures in lens galaxies: PG1115+080 and B1555+375, two fold configurations
نویسندگان
چکیده
منابع مشابه
Substructures in lens galaxies : PG 1115 + 080 and B 1555 + 375 , two fold configurations
We study the anomalous flux ratio which is observed in some four-image lens systems, where the source lies close to a fold caustic. In this case two of the images are close to the critical curve and their flux ratio should be equal to unity, instead in several cases the observed value differs significantly. The most plausible solution is to invoke the presence of substructures, as for instance ...
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ژورنال
عنوان ژورنال: Astrophysics and Space Science
سال: 2007
ISSN: 0004-640X,1572-946X
DOI: 10.1007/s10509-007-9677-3