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PS1-11aop: Probing the Mass Loss History of a Luminous Interacting Supernova Prior to its Final Eruption with Multi-wavelength Observations
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PS1-11aop: Probing the Mass Loss History of a Luminous Interacting Supernova Prior to its Final Eruption with Multi-wavelength Observations
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Paper
PS1-11aop: Probing the Mass Loss History of a Luminous Interacting Supernova Prior to its Final Eruption with Multi-wavelength Observations
2024
Overview
Luminous interacting supernovae are a class of stellar explosions whose progenitors underwent vigorous mass loss in the years prior to core-collapse. While the mechanism by which this material is ejected is still debated, obtaining the full density profile of the circumstellar medium (CSM) could reveal more about this process. Here, we present an extensive multi-wavelength study of PS1-11aop, a luminous and slowly declining Type IIn SN discovered by the PanSTARRS Medium Deep Survey. PS1-11aop had a peak r-band magnitude of \\(-\\)20.5\\,mag, a total radiated energy \\(>\\) 8\\(\\times\\)10\\(^{50}\\)\\,erg, and it exploded near the center of a star-forming galaxy with super-solar metallicity. We obtained multiple detections at the location of PS1-11aop in the radio and X-ray bands between 4 and 10\\,years post-explosion, and if due to the SN, it is one of the most luminous radio supernovae identified to date. Taken together, the multiwavelength properties of PS1-11aop are consistent with a CSM density profile with multiple zones. The early optical emission is consistent with the supernova blastwave interacting with a dense and confined CSM shell which contains multiple solar masses of material that was likely ejected in the final \\(<\\)10-100 years prior to the explosion,(\\(\\sim\\)0.05\\(-\\)1.0 M\\(_{\\odot}\\)yr\\(^{-1}\\) at radii of \\(\\lesssim\\)10\\(^{16}\\)\\,cm). The radio observations, on the other hand, are consistent with a sparser environment (\\(\\lesssim\\)2\\(\\times 10^{-3}\\) M\\(_{\\odot}\\)yr\\(^{-1}\\) at radii of \\(\\sim\\)0.5-1\\(\\times\\)10\\(^{17}\\)\\,cm) -- thus probing the history of the progenitor star prior to its final mass loss episode.
Publisher
Cornell University Library, arXiv.org
Subject
