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HYDROMAGNETIC SHOCKS

Journal Article · · Astrophysical Journal (U.S.)
DOI:https://doi.org/10.1086/146673· OSTI ID:4222652
All physically admissible solutions of the hydromagnetic shock relations for an ideal polytropic gas are exhibited and classified by purely analytical means. The state ahead of the shock (i.e., on the low-density side) is assumed to be known; no restriction is placed on the direction of the magnetic field in front. It is shown, apart from certain limit'' shocks (e.g., pure gas shocks), that the shock velocity and the quantities characterizing the state behind hydromagnetic shocks may be expressed as simple algebraic functions of the discontinuity in the magnetic field across the shock. A natural classification of all hydromagnetic shocks, bnsed on this representation of the state behind the shock, is given. Several useful analytical properties of the various types of hydromagnetic shocks are derived. The results are illustrated graphically for the case of an ideal monatomic gas. The relation between earlier schemes of classification and the present scheme is discussed. (auth)
Research Organization:
New York Univ.
NSA Number:
NSA-13-019510
OSTI ID:
4222652
Journal Information:
Astrophysical Journal (U.S.), Journal Name: Astrophysical Journal (U.S.) Vol. Vol: 129; ISSN ASJOA
Country of Publication:
Country unknown/Code not available
Language:
English