Jacqueline Hewitt

po_Hewitt-JacquelineJacqueline Hewitt (born September 4, 1958) is an American astrophysicist. She was the first person to discover Einstein rings.

In observational astronomy an Einstein ring, also known as an Einstein-Chwolson ring or Chwolson ring, is the deformation of the light from a source (such as a galaxy or star) into a ring through gravitational lensing of the source’s light by an object with an extremely large mass (such as another galaxy or a black hole). This occurs when the source, lens, and observer are all aligned.

po_Hewitt-Jacqueline2