Weak Gravitational Lensing
Weak Gravitational Lensing
Weak Gravitational Lensing
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Dark Matter Ring<br />
•Strong and weak<br />
lensing<br />
•Dark matter and<br />
baryonic matter<br />
displaced, like in<br />
bullet cluster<br />
•Due to a collision 1-<br />
2 Gyr ago<br />
•Only possible with<br />
high resolution and<br />
high surface density<br />
of HST<br />
Jee et al 2007