Other
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21924203c&link_type=abstract
American Astronomical Society, AAS Meeting #219, #242.03
Other
Scientific paper
The current sample of Super Luminous Supernova is heterogeneous. Some show strong emission lines of hydrogen in their spectra close to maximum light (SN 2006gy, SN 2006tf, SN 2008fz, SN 2008iy) and typically belong to the Type IIn subclass; some show hydrogen in later phases and a linear decline of the light curve (LC) expressed in magnitudes (SN 2008es). Others may show no hydrogen at all (SN 2005ap). Careful analysis of the light curve shape and duration as well as the spectral characteristics helps us constrain the properties of the progenitor stars and their Circumstellar Matter envelopes. For this, we present semi-analytical models of Type II SN light curves powered by a variety of luminosity inputs, including forward and reverse shock luminosity due to the interaction between the SN ejecta and the CSM. The effects of Gray diffusion are incorporated with an approach similar to that proposed by Arnett (1980, 1982) in the case of radioactive decays of Ni-56 and Co-56. We find that ejecta-CSM interaction provides a better fit to the LCs of most of those events.CS shock power input can produce the LCs of Type IIn SNe in terms of duration, shape and decline rate, depending on the properties of the CSM envelope. We conclude that the observed LC variety of Type II L, Type IIn and of the SLSNe is likely to be a byproduct of the large range of conditions relevant to significant ejecta-CSM interaction as a power source. Finally, we outline preliminary results from multi-dimensional radiation hydrodynamics simulations of SN ejecta-CSM interaction and Pair-Instability Supernovae (PISN) performed with the latest version of the FLASH code in order to investigate the details
of the physics that give rise to some Super-Luminous Supernovae.
Chatzopoulos Emmanouil
Couch Sean M.
Dearborn David S. P.
Vinko Jozsef
Wheeler Justin C.
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