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INTERACTION-POWERED...
INTERACTION-POWERED SUPERNOVAE : RISE-TIME VERSUS PEAK-LUMINOSITY CORRELATION AND THE SHOCK-BREAKOUT VELOCITY
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Ofek, Eran O. (author)
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Arcavi, Iair (author)
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Tal, David (author)
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Sullivan, Mark (author)
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Gal-Yam, Avishay (author)
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Kulkarni, Shrinivas R. (author)
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Nugent, Peter E. (author)
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Ben-Ami, Sagi (author)
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Bersier, David (author)
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Cao, Yi (author)
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Cenko, S. Bradley (author)
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De Cia, Annalisa (author)
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Filippenko, Alexei V. (author)
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- Fransson, Claes (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Kasliwal, Mansi M. (author)
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Laher, Russ (author)
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Surace, Jason (author)
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Quimby, Robert (author)
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Yaron, Ofer (author)
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(creator_code:org_t)
- 2014
- 2014
- English.
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In: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 788:2, s. 154-
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
Close
- Interaction of supernova (SN) ejecta with the optically thick circumstellar medium (CSM) of a progenitor star can result in a bright, long-lived shock-breakout event. Candidates for such SNe include Type IIn and superluminous SNe. If some of these SNe are powered by interaction, then there should be a specific relation between their peak luminosity, bolometric light-curve rise time, and shock-breakout velocity. Given that the shock velocity during shock breakout is not measured, we expect a correlation, with a significant spread, between the rise time and the peak luminosity of these SNe. Here, we present a sample of 15 SNe IIn for which we have good constraints on their rise time and peak luminosity from observations obtained using the Palomar Transient Factory. We report on a possible correlation between the R-band rise time and peak luminosity of these SNe, with a false-alarm probability of 3%. Assuming that these SNe are powered by interaction, combining these observables and theory allows us to deduce lower limits on the shock-breakout velocity. The lower limits on the shock velocity we find are consistent with what is expected for SNe (i.e., similar to 10(4) km s(-1)). This supports the suggestion that the early-time light curves of SNe IIn are caused by shock breakout in a dense CSM. We note that such a correlation can arise from other physical mechanisms. Performing such a test on other classes of SNe ( e. g., superluminous SNe) can be used to rule out the interaction model for a class of events.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- stars: massive
- stars: mass-loss
- supernovae: general
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Ofek, Eran O.
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Arcavi, Iair
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Tal, David
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Sullivan, Mark
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Gal-Yam, Avishay
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Kulkarni, Shrini ...
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show more...
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Nugent, Peter E.
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Ben-Ami, Sagi
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Bersier, David
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Cao, Yi
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Cenko, S. Bradle ...
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De Cia, Annalisa
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Filippenko, Alex ...
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Fransson, Claes
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Kasliwal, Mansi ...
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Laher, Russ
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Surace, Jason
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Quimby, Robert
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Yaron, Ofer
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Astrophysical Jo ...
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Stockholm University