RAPIDLY RISING TRANSIENTS IN THE SUPERNOVA—SUPERLUMINOUS SUPERNOVA GAP

@article{Arcavi2015RAPIDLYRT,
  title={RAPIDLY RISING TRANSIENTS IN THE SUPERNOVA—SUPERLUMINOUS SUPERNOVA GAP},
  author={Iair Arcavi and William M. Wolf and D. Andrew Howell and Lars Bildsten and Giorgos Leloudas and Delphine Hardin and Szymon Prajs and Daniel A. Perley and Gilad Svirski and Avishay Gal-yam and Boaz Katz and Curtis McCully and S. Bradley Cenko and Christopher E. Lidman and Mark Sullivan and Stefano Valenti and Pierre Astier and C. Balland and Raymond G. Carlberg and Alex Conley and Dominique Fouchez and Julien Guy and R. Pain and Nathalie Palanque-Delabrouille and Kathy Perrett and C. Pritchet and Nicolas Regnault and James Rich and Vanina Ruhlmann-Kleider},
  journal={The Astrophysical Journal},
  year={2015},
  volume={819}
}
We present observations of four rapidly rising (trise ≈ 10 days) transients with peak luminosities between those of supernovae (SNe) and superluminous SNe (Mpeak ≈ −20)—one discovered and followed by the Palomar Transient Factory (PTF) and three by the Supernova Legacy Survey. The light curves resemble those of SN 2011kl, recently shown to be associated with an ultra-long-duration gamma-ray burst (GRB), though no GRB was seen to accompany our SNe. The rapid rise to a luminous peak places these… 

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