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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. (författare)
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Arcavi, Iair (författare)
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Tal, David (författare)
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Sullivan, Mark (författare)
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Gal-Yam, Avishay (författare)
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Kulkarni, Shrinivas R. (författare)
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Nugent, Peter E. (författare)
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Ben-Ami, Sagi (författare)
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Bersier, David (författare)
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Cao, Yi (författare)
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Cenko, S. Bradley (författare)
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De Cia, Annalisa (författare)
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Filippenko, Alexei V. (författare)
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- Fransson, Claes (författare)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Kasliwal, Mansi M. (författare)
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Laher, Russ (författare)
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Surace, Jason (författare)
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Quimby, Robert (författare)
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Yaron, Ofer (författare)
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(creator_code:org_t)
- 2014
- 2014
- Engelska.
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Ingår i: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 788:2, s. 154-
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- stars: massive
- stars: mass-loss
- supernovae: general
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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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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visa fler...
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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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visa färre...
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Stockholms universitet