Luminous Supernovae from ROTSE-III

Details Luminous Supernovae from ROTSE-III Luminous Supernovae from ROTSE-III

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21442701q&link_type=abstract

American Astronomical Society, AAS Meeting #214, #427.01; Bulletin of the American Astronomical Society, Vol. 41, p.696

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Scientific paper

Some of the more illuminating discoveries made by the 0.45-m ROTSE-III telescopes have come not in response to gamma-ray bursts but instead during "down time" between satellite triggers while conducting wide field (>100 square degree) surveys for rare optical transients. Here we present the sample of luminous (M < -21) supernovae that have so far been captured by the ROTSE-III telescopes including SN 2006gy, the first candidate to stir serious discussions of a pair-instability trigger, and SN 2005ap, the most luminous supernova ever identified. From our modest yet growing sample we estimate the volumetric rate of such supernovae and explore the properties of their host environments. We note the various physical processes that have been employed to explain the high luminosities, light curves, and spectra of these supernovae. Finally we address the difficulty in isolating these rare events from other signals in the transient sky, perhaps most importantly, the potential photometric and even spectroscopic confusion with Blazars.

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