一个周期活跃的脉冲器为磁子体物理学提供洞察
天体物理学
2012-08-27 v1
摘要
PSR B1931+24 (J1933+2421) 在持续 5-10 天的活跃阶段表现为普通孤立射电脉冲器。然而，射电辐射在 less than 10 秒内关闭，并在接下来的 25-35 天内保持不可探测状态，然后再次开启。这种模式周期性重复。该行为的起源不明。更惊人的是，当脉冲器开启时，其旋转减缓速度为平时的 50%。这表明当脉冲器开启时，磁子体电流显著增加，证明脉冲风在脉冲器减速中发挥重要作用。这使我们首次能够估计脉冲器磁子体在射电发生期间的电流。
引用
@article{arxiv.astro-ph/0604604,
title = {Warm Dust and Spatially Variable PAH Emission in the Dwarf Starburst Galaxy NGC 1705},
author = {John M. Cannon and John-David T. Smith and Fabian Walter and George J. Bendo and Daniela Calzetti and Daniel A. Dale and Bruce T. Draine and Charles W. Engelbracht and Karl D. Gordon and George Helou and Robert C. Kennicutt, and Claus Leitherer and Lee Armus and Brent A. Buckalew and David J. Hollenbach and Thomas H. Jarrett and Aigen Li and Martin J. Meyer and Eric J. Murphy and Michael W. Regan and George H. Rieke and Marcia J. Rieke and Helene Roussel and Kartik Sheth and Michele D. Thornley},
journal= {arXiv preprint arXiv:astro-ph/0604604},
year = {2012}
}
备注
ApJ, in press; please retrieve full-resolution version from http://www.astro.wesleyan.edu/~cannon/pubs.html