Modelling the broadest spectral band of the Crab nebula and constraining the ion acceleration efficiency
Modelling the broadest spectral band of the Crab nebula and constraining the ion acceleration efficiency
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模拟蟹状星云最宽的光谱带并限制离子加速效率
DOI:
10.1093/mnras/staa2151
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发表时间:
2020-08
影响因子:
4.8
通讯作者:
Chen Ding
中科院分区:
文献类型:
--
作者:
Zhang Xiao;Chen Yang;Huang Jing;Chen Ding
Although it is widely accepted that the electromagnetic spectrum from radio to very-high-energy $\gamma$-rays of pulsar wind nebulae (PWNe) originates from leptons, there is still an open question that protons (or more generally, ions) may exist in pulsar wind and are further accelerated in PWN. The broadband spectrum of the prototype PWN Crab, extended recently by the detection of the Tibet AS$\gamma$ and HAWC experiments above 100 TeV, may be helpful in constraining the acceleration efficiency of ions. Here, we model the broadest energy spectrum of Crab and find that the broadband spectrum can be explained by the one-zone leptonic model in which the electrons/positrons produce the emission from radio to soft $\gamma$-rays via the synchrotron process, and simultaneously generate the GeV-TeV $\gamma$-rays through inverse Compton scattering including the synchrotron self-Compton process. In the framework of this leptonic model, the fraction of energy converted into the energetic protons is constrained to be below $0.5\ (n_{\rm t}/10\ {\rm cm}^{-3})^{-1}$ per cent, where $n_{\rm t}$ is the target gas density in the Crab. However, this fraction can be up to $7\ (n_{\rm t}/10\ {\rm cm}^{-3})^{-1}$ per cent if only the $\gamma$-rays are used.
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影响因子:
10.3
作者:
Oleg Kargaltsev;Benoît Cerutti;Yuri Lyubarsky;Edoardo Striani
通讯作者:
Oleg Kargaltsev;Benoît Cerutti;Yuri Lyubarsky;Edoardo Striani
影响因子:
6.5
作者:
D. Horns;F. Aharonian;A. Santangelo;A. Hoffmann;C. Masterson
通讯作者:
D. Horns;F. Aharonian;A. Santangelo;A. Hoffmann;C. Masterson
DOI:
10.1088/0004-637x/711/1/417
发表时间:
2008-02
期刊:
The Astrophysical Journal
影响因子:
--
作者:
J. Macías-Pérez;F. Mayet;J. Aumont;F. Désert
通讯作者:
J. Macías-Pérez;F. Mayet;J. Aumont;F. Désert
DOI:
10.1088/0954-3899/16/7/022
发表时间:
1990-07
期刊:
Journal of Physics G
影响因子:
--
作者:
K. Cheng;T. Cheung;M. Lau;K. N. Yu;P. Kwok
通讯作者:
K. Cheng;T. Cheung;M. Lau;K. N. Yu;P. Kwok
DOI:
10.3847/1538-4357/836/2/159
发表时间:
2016-05
期刊:
The Astrophysical Journal
影响因子:
--
作者:
I. Palma;D. Guetta;E. Amato
通讯作者:
I. Palma;D. Guetta;E. Amato