Hydrogen-poor superluminous stellar explosions

@article{Quimby2009HydrogenpoorSS,
  title={Hydrogen-poor superluminous stellar explosions},
  author={Robert M. Quimby and Shrinivas R. Kulkarni and Mansi M. Kasliwal and Avishay Gal-yam and Iair Arcavi and M. Sullivan and Peter E. Nugent and R. C. Thomas and Dawn A. Howell and Ehud Nakar and Lars Bildsten and Christopher A. Theissen and Nicholas M. Law and Richard Dekany and Gustavo Rahmer and David D. S. Hale and R. J. E. Smith and Eran. O. Ofek and Jeffry Zolkower and Viswa Velur and R. Walters and John R. Henning and K. Bui and D. L. Mckenna and Dovi Poznanski and S. Bradley Cenko and D. Levitan},
  journal={Nature},
  year={2009},
  volume={474},
  pages={487-489}
}
Supernovae are stellar explosions driven by gravitational or thermonuclear energy that is observed as electromagnetic radiation emitted over weeks or more. In all known supernovae, this radiation comes from internal energy deposited in the outflowing ejecta by one or more of the following processes: radioactive decay of freshly synthesized elements (typically 56Ni), the explosion shock in the envelope of a supergiant star, and interaction between the debris and slowly moving, hydrogen-rich… 

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High-resolution spectroscopy of the supernova PTF 11kx is reported, which was detected on 26 January 2011 by the Palomar Transient Factory survey, and the data suggest a red giant star companion whose material got transferred to the white dwarf.

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It is reported that the brightest supernovae in the modern Universe arise from collisions between shells of matter ejected by massive stars that undergo an interior instability arising from the production of electron–positron pairs.

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Observations of supernova SN 2007bi are reported, a luminous, slowly evolving object located within a dwarf galaxy, and it is shown that >3 of radioactive 56Ni was synthesized during the explosion and that the observations are well fitted by models of pair-instability supernovae.

SHOCK BREAKOUT IN DENSE MASS LOSS: LUMINOUS SUPERNOVAE

We examine the case where a circumstellar medium around a supernova is sufficiently opaque that a radiation-dominated shock propagates in the circumstellar region. The initial propagation of the

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Following an initial explosion that might be launched either by magnetic interactions or neutrinos, a rotating magnetar radiating according to the classic dipole formula could power a very luminous

How Much 56Ni Can Be Produced in Core-Collapse Supernovae? Evolution and Explosions of 30-100 M☉ Stars

Motivated by the discovery of extremely bright supernovae SNe 1999as and 2006gy, we have investigated how much 56Ni mass can be synthesized in core-collapse massive supernovae (SNe). We calculate the

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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

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