Candidate #2: Abell 1961




Variable source superposed very near to the center of the host nucleus. Keck spectroscopy (Courtesy of R. Guhathakurta, G. Smith, A. Filippenko and R. Chornock) confirms this is a type Ia SN in one of the cluster galaxies.



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Constructed: December 2001, by: Avishay Gal-Yam , E-Mail: avishay@wise.tau.ac.il