Balmer-Dominated Shocks: A Concise Review

Publications of the Astronomical Society of Australia

Kevin Heng¹ 

关键词: acceleration of particles;    atomic processes;    line: formation;    radiation mechanisms: general;    shock waves;   

DOI  :  10.1071/AS09057

学科分类：天文学(综合)

来源: CSIRO

【 摘 要 】

A concise and critical review of Balmer-dominated shocks (BDSs) is presented, summarizing the state of theory and observations, including models with/without shock precursors and their synergy with atomic physics. Observations of BDSs in supernova remnants are reviewed on an object-by-object basis. The relevance of BDSs towards understanding the acceleration of cosmic rays in shocks is emphasized. Probable and possible detections of BDSs in astrophysical objects other than supernova remnants, including pulsar wind nebulae and high-redshift galaxies, are described. The case for the continued future of studying BDSs in astrophysics is made, including their relevance towards understanding electron–ion temperature equilibration in collisionless shocks.

【 授权许可】

Unknown