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题名: A TRIPLE-ENERGY-SOURCE MODEL FOR SUPERLUMINOUS SUPERNOVA iPTF13ehe
作者: Wang, S. Q.; Liu, L. D.; Dai, Z. G.; Wang, L. J.; Wu, X. F.
刊名: ASTROPHYSICAL JOURNAL
出版日期: 2016
卷号: 828, 期号:2, 页码:87
英文摘要: Almost all superluminous supernovae (SLSNe) whose peak magnitudes are less than or similar to -21 mag can be explained by the Ni-56-powered model, the. magnetar-powered (highly magnetized pulsar) model, or the. ejecta-circumstellar medium (CSM) interaction model. Recently, iPTF13ehe challenged. these energy-source models, because the spectral analysis shows that similar to 2.5M circle dot. of Ni-56 have been synthesized, but are inadequate to power the peak bolometric emission of iPTF13ehe, while the rebrightening of the late-time light. curve (LC) and the Ha emission lines indicate that the ejecta-CSM interaction must play a key role in powering the late-time LC. Here we propose a triple-energy-source model, in which a magnetar together with some amount (less than or similar to 2.5M circle dot) of Ni-56 may power the early LC of iPTF13ehe, while the late-time rebrightening can be quantitatively explained by an ejecta-CSM interaction. Furthermore, we suggest that iPTF13ehe is a genuine core-collapse supernova rather than a pulsational pair-instability supernova candidate. Further studies on similar SLSNe in the future would eventually shed light on their explosion and energy-source mechanisms.
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16862
Appears in Collections:南极天文中心_期刊论文

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