The Blackett Laboratory, Imperial College London, London SW7 2AZ, United Kingdom.
Phys Rev Lett. 2013 May 31;110(22):225001. doi: 10.1103/PhysRevLett.110.225001.
The partition of energy flux in magnetic reconnection is examined experimentally using Cluster satellite observations of collisionless reconnection in Earth's magnetotail. In this plasma regime, the dominant component of the energy flux is ion enthalpy flux, with smaller contributions from the electron enthalpy and heat flux and the ion kinetic energy flux. However, the Poynting flux is not negligible, and in certain parts of the ion diffusion region the Poynting flux in fact dominates. Evidence for earthward-tailward asymmetry is ascribed to the presence of Earth's dipole fields.
利用“Cluster”卫星对地球磁尾的无碰撞重联进行的观测，对磁重联过程中能量通量的分配进行了实验研究。在该等离子体状态下，能量通量的主要分量是离子焓通量，电子焓通量、热通量和离子动能通量的贡献较小。然而，电磁能通量并非可以忽略，在离子扩散区的某些部分，电磁能通量实际上占据主导地位。对地尾向不对称的证据归因于地磁场偶极子的存在。
