dc.contributor.author | Lunnan, R. | |
dc.contributor.author | Chornock, R. | |
dc.contributor.author | Berger, Edo | |
dc.contributor.author | Milisavljevic, Danny | |
dc.contributor.author | Jones, D. O. | |
dc.contributor.author | Rest, A. | |
dc.contributor.author | Fong, W. | |
dc.contributor.author | Fransson, C. | |
dc.contributor.author | Margutti, R. | |
dc.contributor.author | Drout, M. R. | |
dc.contributor.author | Blanchard, Peter Kelly | |
dc.contributor.author | Challis, P. | |
dc.contributor.author | Cowperthwaite, Philip Steven | |
dc.contributor.author | Foley, R. J. | |
dc.contributor.author | Kirshner, Robert P. | |
dc.contributor.author | Morrell, N. | |
dc.contributor.author | Riess, A. G. | |
dc.contributor.author | Roth, K. C. | |
dc.contributor.author | Scolnic, D. | |
dc.contributor.author | Smartt, S. J. | |
dc.contributor.author | Smith, K. W. | |
dc.contributor.author | Villar, Victoria Ashley | |
dc.contributor.author | Chambers, K. C. | |
dc.contributor.author | Draper, P. W. | |
dc.contributor.author | Huber, M. E. | |
dc.contributor.author | Kaiser, N. | |
dc.contributor.author | Kudritzki, R.-P. | |
dc.contributor.author | Magnier, E. A. | |
dc.contributor.author | Metcalfe, N. | |
dc.contributor.author | Waters, C. | |
dc.date.accessioned | 2017-03-03T21:57:10Z | |
dc.date.issued | 2016 | |
dc.identifier.citation | Lunnan, R., R. Chornock, E. Berger, D. Milisavljevic, D. O. Jones, A. Rest, W. Fong, et al. 2016. “PS1-14bj: A Hydrogen-poor Superluminous Supernova with a Long Rise and Slow Decay.” The Astrophysical Journal 831 (2) (November 3): 144. doi:10.3847/0004-637x/831/2/144. | en_US |
dc.identifier.issn | 1538-4357 | en_US |
dc.identifier.uri | http://nrs.harvard.edu/urn-3:HUL.InstRepos:30510190 | |
dc.description.abstract | We present photometry and spectroscopy of PS1-14bj, a hydrogen-poor superluminous supernova (SLSN) at redshift z = 0.5215 discovered in the last months of the Pan-STARRS1 Medium Deep Survey. PS1-14bj stands out by its extremely slow evolution, with an observed rise of ∼ > 125 restframe days, and exponential decline out to ∼ 250 days past peak at a measured rate of 0.01 mag day−1, consistent with fully-trapped 56Co decay. This is the longest rise time measured in a SLSN to date, and the first SLSN to show a rise time consistent with pair-instability supernova (PISN) models. Compared to other slowly-evolving SLSNe, it is spectroscopically similar to the prototype SN 2007bi at maximum light, though lower in luminosity (Lpeak ≃ 4.6×1043ergs−1) and with a flatter peak than previous events. PS1-14bj shows a number of peculiar properties, including a near-constant color temperature for > 200 days past peak, and strong emission lines from [O III] λ5007 and [O III] λ4363 with a velocity width of ∼3400 km s−1 in its late-time spectra. These both suggest there is a sustained source of heating over very long timescales, and are incompatible with a simple 56Ni-powered/PISN interpretation. A modified magnetar model including emission leakage at late times can reproduce the light curve, in which case the blue continuum and [O III] features are interpreted as material heated and ionized by the inner pulsar wind nebula becoming visible at late times. Alternatively, the late-time heating could be due to interaction with a shell of H-poor circumstellar material. | en_US |
dc.description.sponsorship | Astronomy | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | American Astronomical Society | en_US |
dc.relation.isversionof | doi:10.3847/0004-637x/831/2/144 | en_US |
dc.relation.hasversion | https://arxiv.org/abs/1605.05235 | en_US |
dash.license | OAP | |
dc.subject | supernovae: general | en_US |
dc.subject | supernovae: individual (PS1-14bj, LSQ14an) | en_US |
dc.title | PS1-14bj: A Hydrogen-poor Superluminous Supernova with a Long Rise and Slow Decay. | en_US |
dc.type | Journal Article | en_US |
dc.description.version | Accepted Manuscript | en_US |
dc.relation.journal | The Astrophysical Journal | en_US |
dash.depositing.author | Berger, Edo | |
dc.date.available | 2017-03-03T21:57:10Z | |
dc.identifier.doi | 10.3847/0004-637x/831/2/144 | * |
dash.authorsordered | false | |
dash.contributor.affiliated | Villar, Ashley | |
dash.contributor.affiliated | Cowperthwaite, Philip | |
dash.contributor.affiliated | Blanchard, Peter | |
dash.contributor.affiliated | Kirshner, Robert | |
dash.contributor.affiliated | Milisavljevic, Danny | |
dash.contributor.affiliated | Berger, Edo | |