Non-thermal emission from Vela X and PWN G0.9+0.1 |
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作者单位: | Department of Physics, Yunnan University, Kunming, 650091, China
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基金项目: | 国家自然科学基金,国家自然科学基金 |
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摘 要: |
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关 键 词: | 热排放 逆康普顿散射 高能电子 非热辐射 模型描述 加速粒子 光子能量 时间依赖性 |
Non-thermal emission from Vela X and PWN G0.9+0.1 |
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Authors: | Wei-Fan Qiao Li Zhang Jun Fang |
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Institution: | Department of Physics, Yunnan University, Kunming, 650091, China |
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Abstract: | We study the multi-waveband non-thermal emission from the pulsar wind neb- ulae (PWNe) Vela X and G0.9 + 0.1 in the frame of a time-dependent model describing non-thermal radiation from the PWNe. In such a model, the relativistic wind of parti- cles driven by a central pulsar blows into the ambient medium and creates a termination shock that accelerates the particles to very high energy in a PWN. The non-thermal pho-tons in the PWN are produced both by synchrotron radiation and the inverse Compton process, with electrons coming directly from the pulsar magnetosphere and electrons be- ing accelerated at the termination shock. We apply this model to reproduce the observed multi-waveband photon spectra of Vela X and the G0.9+0.1, both of which have been detected emitting very high energy photons. Our results indicate that TeV photons are produced by the inverse Compton scattering of the high-energy electrons in the infrared photon field in both Vela X and PWN G0.9+0.1. The TeV photons from these two PWNe may have leptonic origins. |
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Keywords: | ISM: individual objects: Vela X G0 9 0 1 -- gamma-rays: theory |
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