On the surface extraction of electrons in a pulsar
On the surface extraction of electrons in a pulsar
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脉冲星中电子的表面提取
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Luis Teodoro
中科院分区：
文献类型：
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作者：
D. Diver;A. A. D. Costa;A. A. D. Costa;E. W. Laing;C. Stark;C. Stark;Luis Teodoro
我们提出了一个新的描述如何充满活力的电子可能会从脉冲星内部喷射到大气中，基于集体静电振荡的内部电子被限制平行于磁场移动。内部磁场的大小通过相关的物质密度压缩影响内部等离子体频率。等离子体振荡发生在最大磁场曲率的区域附近，即靠近大部分磁通量出现的磁极。假设这些振荡在波破碎发生之前具有依赖于密度的最大振幅，这样的波可以仅使用内部电子群体的自场来喷射高能电子。此外，振荡过程中电子发射的光子可以沿着场线逃逸，因为那里的不透明度较低（而且它们主要是沿着这个方向发射的），从而导致了光子谱的特征。
We present a novel description of how energetic electrons may be ejected from the pulsar interior into the atmosphere, based on the collective electrostatic oscillations of interior electrons confined to move parallel to the magnetic field. The size of the interior magnetic field influences the interior plasma frequency, via the associated matter density compression. The plasma oscillations occur close to the regions of maximum magnetic field curvature, that is close to the magnetic poles where the majority of magnetic flux emerges. Given that these oscillations have a density-dependent maximum amplitude before wavebreaking occurs, such waves can eject energetic electrons using only the self-field of the electron population in the interior. Moreover, photons emitted by electrons in the bulk of the oscillation can escape along the field lines by virtue of the lower opacity there (and the fact that they are emitted predominantly in this direction), leading to features in the spectra of pulsars.