Multiband emission from pulsar wind nebulae: a possible injection spectrum
Multiband emission from pulsar wind nebulae: a possible injection spectrum
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DOI：
10.1051/0004-6361/200913615
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发表时间：
2010-03
影响因子：
6.5
通讯作者：
J. Fang;Li Zhang
中科院分区：
文献类型：
--
作者：
J. Fang;Li Zhang
目标。最近的研究表明，具有相对论麦克斯韦粒子和高能尾巴的粒子可以被相对论无碰撞激波加速。在研究脉冲星风星云多波长辐射的基础上，研究了具有这种新光谱的高能粒子注入脉冲星风星云的可能性。方法：研究方法。利用注入了新光谱的电子/正电子的动力学模型，研究了超新星遗迹(SNR)的动力学以及遗迹内部PWN的多带非热辐射。在这个模型中，脉冲星风星云在非辐射超新星遗迹中的动力学和辐射演化可以自洽地描述。结果。将该模式应用于G0.9+0.1、MSH15-52、G338.3-0.0三个复合信噪比，再现了三个PWNe的多波段观测辐射。结论。我们对这三个残留物的研究提供了新的粒子光谱的证据，这些粒子被终止激波加速并注入到PWN中。
Aims. Recent research shows that particles with a spectrum of a relativistic Maxwellian plus a high-energy tail can be accelerated by relativistic collisionless shocks. We investigate the possibility of the high-energy particles with this new spectrum injected into pulsar wind nebulae (PWNe) from the terminate shock based on the study of multiwavelength emission from PWNe. Methods. The dynamics of a supernova remnant (SNR) and multiband nonthermal emission from the PWN inside the remnant are investigated using a dynamical model with electrons/positrons injected with the new spectrum. In this model, the dynamical and radiative evolution of a pulsar wind nebula in a nonradiative supernova remnant can be described self-consistently. Results. This model is applied to the three composite SNRs, G0.9+0.1, MSH 15-52, G338.3-0.0, and the multiband observed emission from the three PWNe is reproduced. Conclusions. Our studies on the three remnants provide evidence of a new spectrum of the particles, which are accelerated by the terminate shock and injected into a PWN.