SN?2005ap: A Most Brilliant Explosion

  title={SN?2005ap: A Most Brilliant Explosion},
  author={Robert M. Quimby and Gregory S. Aldering and J. Craig Wheeler and Peter A. Hoflich and Carl W. Akerlof and Eli S. Rykoff},
  journal={The Astrophysical Journal},
We present unfiltered photometric observations with ROTSE-III and optical spectroscopic follow-up with HET and the Keck telescope of the most luminous supernova yet identified, SN 2005ap. The spectra taken about 3 days before and 6 days after maximum light show narrow emission lines (likely originating in the dwarf host) and absorption lines at a redshift of z = 0.2832, which puts the peak unfiltered magnitude at -22.7 ± 0.1 absolute. Broad P Cygni features corresponding to Hα, C III, N III… 

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