A Collapsar Model with Disk Wind: Implications for Supernovae Associated with Gamma-Ray Bursts
A Collapsar Model with Disk Wind: Implications for Supernovae Associated with Gamma-Ray Bursts
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DOI：
10.3847/1538-4357/aaa76c
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发表时间：
2018-01
期刊：
影响因子：
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通讯作者：
T. Hayakawa;K. Maeda
中科院分区：
文献类型：
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作者：
T. Hayakawa;K. Maeda
我们构造了一个简单但自洽的伽马射线暴（GRB）和与GRB相关的SNe（GRB-SNe）的Eksar模型。我们的模型包括一个黑洞，一个吸积盘，和包围中心系统的信封。不同分量的演化通过质量和角动量的传递联系起来。为了解决喷气和风驱动的SNe的属性，我们考虑的冲压压力的下降包线和那些从喷气和风的竞争。伽玛暴喷流和风驱动的SN的预期属性的祖质量和角动量的函数进行了研究。我们发现，如果风驱动的爆炸是为了解释所观察到的GRB-SNe的属性，应该满足两个条件：（1）风应该在其底部准直，（2）它不应该阻止进一步吸积，即使在发射的SN爆炸。在这些条件下，GRB-SNe性质中的一些关系可以通过祖细胞中不同角动量的序列来再现。只有具有最大角动量的模型才能解释观测到的（高能）GRB-SNe，我们预计，BARNSAR模型可以产生各种各样的观测对应物，主要取决于祖星星的角动量。
We construct a simple but self-consistent collapsar model for gamma-ray bursts (GRBs) and SNe associated with GRBs (GRB-SNe). Our model includes a black hole, an accretion disk, and the envelope surrounding the central system. The evolutions of the different components are connected by the transfer of the mass and angular momentum. To address properties of the jet and the wind-driven SNe, we consider competition of the ram pressure from the infalling envelope and those from the jet and wind. The expected properties of the GRB jet and the wind-driven SN are investigated as a function of the progenitor mass and angular momentum. We find two conditions that should be satisfied if the wind-driven explosion is to explain the properties of the observed GRB-SNe: (1) the wind should be collimated at its base, and (2) it should not prevent further accretion even after the launch of the SN explosion. Under these conditions, some relations seen in the properties of the GRB-SNe could be reproduced by a sequence of different angular momentum in the progenitors. Only the model with the largest angular momentum could explain the observed (energetic) GRB-SNe, and we expect that the collapsar model can result in a wide variety of observational counterparts, mainly depending on the angular momentum of the progenitor star.