Effect of Cosmic Rays on the Evolution and Momentum Deposition of Supernova Remnants.

Effect of Cosmic Rays on the Evolution and Momentum Deposition of Supernova Remnants.
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宇宙射线对超新星遗迹演化和动量沉积的影响。

DOI:
10.1103/physrevlett.121.091101
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发表时间:
2018
影响因子:
8.6
通讯作者:
D. Caprioli
D. Caprioli
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
R. Diesing;D. Caprioli

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使用基于薄壳近似的半解析方法,我们计算了超新星遗迹(SNR)的长期演化,同时也考虑了在爆炸波中加速的宇宙射线(CRS)。我们的解决方案再现了纯气体情况下绝热和辐射阶段最先进的流体模拟结果,并预测典型的CR加速效率(≈10%)可以将信噪比动量沉积提高2-3倍。在气体遭受更严重的辐射损失的环境中,这种增强可以达到一个数量级。这一结果可能对模拟超新星反馈对恒星形成和星系演化的影响具有至关重要的影响。
Using a semianalytical approach based on the thin-shell approximation, we calculate the long-term evolution of supernova remnants (SNRs) while also accounting for the cosmic rays (CRs) accelerated at their blast waves. Our solution reproduces the results of state-of-the-art fluid simulations across the adiabatic and radiative stages for the gas-only case, and it predicts that typical CR acceleration efficiencies (≈10%) can boost SNR momentum deposition by a factor of 2-3. This enhancement can become as large as an order of magnitude in environments in which the gas experiences more severe radiative losses. This result may have a crucial impact on modeling the effect of supernova feedback on star formation and galaxy evolution.
DOI: 10.1093/mnras/stv1155
发表时间: 2014-09
影响因子: 4.8
作者:
S. Walch;T. Naab
通讯作者: S. Walch;T. Naab
DOI: 10.3847/1538-4357/aab26d
发表时间: 2017-07
期刊: The Astrophysical Journal
影响因子: --
作者:
R. Farber;M. Ruszkowski;Karen Yang;E. Zweibel
通讯作者: R. Farber;M. Ruszkowski;Karen Yang;E. Zweibel
DOI: 10.1017/s0022377818000478
发表时间: 2018-06-01
影响因子: 2.5
作者:
Caprioli, Damiano;Zhang, Horace;Spitkovsky, Anatoly
通讯作者: Spitkovsky, Anatoly