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首页> 外文期刊>The Astrophysical Journal. Letters >The long-lived UV 'plateau' of SN 2012aw
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The long-lived UV 'plateau' of SN 2012aw

机译:SN 2012aw的长寿命紫外线“高原”

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Observations with the Swift UV Optical Telescope have unambiguously uncovered for the first time a long-lived, UV "plateau" in a Type II-P supernova (SN). Although this flattening in slope is hinted at in a few other SNe, due to its proximity and minimal line-of-sight extinction, SN 2012aw has afforded the first opportunity to clearly observe this UV plateau. The observations of SN 2012aw revealed all Swift UV and u-band light curves initially declined rapidly, but 27 days after the explosion the light curves flattened. Some possible sources of the UV plateau are the same thermal process that causes the optical plateau, heating from radioactive decay, or a combination of both processes.
机译:使用斯威夫特紫外线光学望远镜进行的观测已明确地首次发现了II-P型超新星(SN)中长寿命的紫外线“高原”。尽管在其他一些SNe中暗示了这种平坦的坡度,但由于其邻近性和最小的视线消光,SN 2012aw提供了第一个机会来清楚地观察该UV平稳期。 SN 2012aw的观测结果显示,所有Swift UV和u波段光曲线最初均迅速下降,但在爆炸后27天,光曲线变平了。 UV平稳区的某些可能来源是导致光学平稳期的同一热过程,放射性衰变产生的热量或这两种过程的组合。

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