论文标题
国际天文联盟论文集：使用数值模拟在相互作用星系中研究磁场扩增
Proceedings of the International Astronomical Union: Studying Magnetic Field Amplification in Interacting Galaxies Using Numerical Simulations
论文作者
论文摘要
有迹象表明，星系中的磁场演化可能是由于星系之间的潮汐相互作用和合并而大大影响的。磁场演变与宿主星系的演变之间的连接细节仍然是一个研究领域。我们为重子使用磁水动力学的组合方法，以及暗物质的N体方案，以研究相互作用星系中的磁场扩增和进化。我们发现，对于两个碰撞的相等质量星系，对于不同的初始相对空间取向，在相互作用期间会放大磁场，但无法维持。此外，我们找到了主动平均场发电机的线索。
There are indications that the magnetic field evolution in galaxies might be massively shaped by tidal interactions and mergers between galaxies. The details of the connection between the evolution of magnetic fields and that of their host galaxies is still a field of research. We use a combined approach of magnetohydrodynamics for the baryons and an N-body scheme for the dark matter to investigate magnetic field amplification and evolution in interacting galaxies. We find that, for two colliding equal-mass galaxies and for varying initial relative spatial orientations, magnetic fields are amplified during interactions, yet cannot be sustained. Furthermore, we find clues for an active mean-field dynamo.
