arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1303.4094astro-ph.HE
收藏

爱因斯坦电动力学解决脉冲星:强脉冲星的低效率

Aristotelian Electrodynamics solves the Pulsar: Lower Efficiency of Strong Pulsars

Andrei Gruzinov

摘要:

在电磁场理论中,由于辐射过阻尼,电荷的速度而不是加速度是由局部电磁场决定的。把电子和正电子分开处理,AE似乎能忠实地描述脉冲星磁层中的电荷流动。AE可能允许计算脉冲星发射的全部细节,在所有的能量,除了无线电。但AE并不是一个完整的理论--必须加上等离子体的生产过程。在这里,我们表明,脉冲星磁层和由此产生的排放是敏感的等离子体的生产率附近的轻圆柱。在强光子柱中(由于光子-光子碰撞而产生的高产生率),在光柱之外闭合的场线的数量减少。这降低了脉冲星的效率(脉冲测辐射热光度与自旋下降功率的比值)和特征光子能量,与费米数据总体一致。对于弱的双曲星(低生产率),我们的AE数值实现工作稳定,似乎准备计算光变曲线和光谱。但是对于强大的浏览器,代码(包括)需要改进或更好地理解。

英文摘要:

In Aristotelian Electrodynamics (AE), due to radiation over-damping, the velocity rather than the acceleration of a charge is determined by the local electromagnetic field. Treating electrons and positrons separately, AE seems to give a faithful description of the flow of charges in a pulsar magnetosphere. AE might allow to calculate the pulsar emission in full detail, at all energies except the radio. But AE is not a full theory -- the plasma production processes must be added. Here we show that the pulsar magnetosphere and the resulting emission are sensitive to the plasma production rate near the light cylinder. In strong pulsars (high production rate, due to photon-photon collisions), the number of field lines closing beyond the light cylinder decreases. This reduces both the pulsar efficiency (the ratio of the pulsed bolometric luminosity to the spin-down power) and the characteristic photon energy, in overall agreement with the Fermi data. For weak pulsars (low production rate), our numerical implementation of AE works stably and seems to be ready to calculate the lightcurves and spectra. But for strong pulsars, the code (included) needs improvement or better understanding.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑