Extended adiabatic blast waves and a model of the soft X-ray background

Details Extended adiabatic blast waves and a model of the soft X-ray background Extended adiabatic blast waves and a model of the soft X-ray background

Feb 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...253..268c&link_type=abstract

Astrophysical Journal, Part 1, vol. 253, Feb. 1, 1982, p. 268-289.

Astronomy and Astrophysics

Astronomy

133

Adiabatic Conditions, Astronomical Models, Coulomb Collisions, Interstellar Matter, Shock Wave Propagation, X Ray Sources, Electron Energy, Ion Temperature, Luminosity, Thermal Expansion, X Ray Astronomy

Scientific paper

The suggestion has been made that much of the soft X-ray background observed in X-ray astronomy might arise from being inside a very large supernova blast wave propagating in the hot, low-density component of the interstellar (ISM) medium. An investigation is conducted to study this possibility. An analytic approximation is presented for the nonsimilar time evolution of the dynamic structure of an adiabatic blast wave generated by a point explosion in a homogeneous ambient medium. A scheme is provided for evaluating the electron-temperature distribution for the evolving structure, and a procedure is presented for following the state of a given fluid element through the evolving dynamical and thermal structures. The results of the investigation show that, if the solar system were located within a blast wave, the Wisconsin soft X-ray rocket payload would measure the B and C band count rates that it does measure, provided conditions correspond to the values calculated in the investigation.

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