ASW0000id5 - red dot Quasar
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by
JKD
Einstein Cross - quasar next to 6 o'clock at the bottom line
Posted
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by
JasonJason
Model 1
4 blobs in the respective locations using minima
Model results for ASW0000id5: Plausible
Model 2
4 blobs in the respective locations without using minima
Results for ASW0000id5: Plausible
Posted
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by
Capella05
moderator
The Mass distribution does not seem to match the galaxy.
I do not think Spaghettilens is meant to be used to model einstein points 😃 I am sure @psaha or @fafael_kueng will correct me if I am wrong!Posted
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by
psaha
scientist
SpaghettiLens is likely to have problems with perfectly symmetric image configurations, but for this sort of system it should be fine.
I tried modelling it too with the two saddles from Model 1 by @JasonJason swapping position. Results similar: the synthetic image looks plausible, but the arrival-time contours look weird, which nearly always indicates the model is no good.
Another thing is the very wide separation of the points. Now, there are several lenses in CFHTLS with comparably wide separations -- but those are all groups or clusters of galaxies. A single galaxy producing such wide separations would be unlikely.
Posted