Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/3351
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dc.contributor.authorMisra, Kuntal-
dc.contributor.authorPooley, Dave-
dc.contributor.authorChandra, Poonam-
dc.contributor.authorBhattacharya, D.-
dc.contributor.authorRay, Alak K.-
dc.contributor.authorSagar, R.-
dc.contributor.authorLewin, Walter H.G.-
dc.date.accessioned2007-11-21T11:18:07Z-
dc.date.available2007-11-21T11:18:07Z-
dc.date.issued2007-10-
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, 2007, Vol.381, p280-292.en
dc.identifier.issnE-ISSN(s): 1365-2966-
dc.identifier.issnP-ISSN(s): 0035-8711-
dc.identifier.urihttp://hdl.handle.net/2289/3351-
dc.descriptionRestricted Access. An open-access version is available at arXiv.org (one of the alternative locations)en
dc.description.abstractWe present X-ray, broad-band optical and low-frequency radio observations of the bright type IIP supernova SN 2004et. The Chandra X-ray Observatory observed the supernova at three epochs, and the optical coverage spans a period of ~470 d since explosion. The X-ray emission softens with time, and we characterize the X-ray luminosity evolution as LX ~ t-0.4. We use the observed X-ray luminosity to estimate a mass-loss rate for the progenitor star of ~2 × 10-6Msolaryr-1. The optical light curve shows a pronounced plateau lasting for about 110 d. Temporal evolution of photospheric radius and colour temperature during the plateau phase is determined by making blackbody fits. We estimate the ejected mass of 56Ni to be 0.06 +/- 0.03Msolar. Using the expressions of Litvinova & Nadëzhin we estimate an explosion energy of (0.98 +/- 0.25) × 1051 erg. We also present a single epoch radio observation of SN 2004et. We compare this with the predictions of the model proposed by Chevalier, Fransson & Nymark. These multiwavelength studies suggest a main-sequence progenitor mass of ~20 Msolar for SN 2004et.en
dc.format.extent837864 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherBlackwell Publishing for the Royal Astronomical Societyen
dc.relation.urihttp://arxiv.org/abs/arXiv:0707.3485en
dc.relation.urihttp://adsabs.harvard.edu/abs/2007MNRAS.381..280Men
dc.relation.urihttp://dx.doi.org/10.1111/j.1365-2966.2007.12258.xen
dc.rights2007 The Authors. Journal compilation © 2007 Royal Astronomical Societyen
dc.subjectTechniques: photometricen
dc.subjectSupernovae: generalen
dc.subjectSupernova: individualen
dc.subjectSN 2004eten
dc.titleType IIP supernova SN 2004et: a multiwavelength study in X-ray, optical and radioen
dc.typeArticleen
Appears in Collections:Research Papers (A&A)

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