Modeling the Soft X-Ray Background with Multiple Supernovae

Details Modeling the Soft X-Ray Background with Multiple Supernovae Modeling the Soft X-Ray Background with Multiple Supernovae

Jan 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996phdt.........3s&link_type=abstract

Thesis (PH.D.)--THE UNIVERSITY OF WISCONSIN - MADISON, 1996.Source: Dissertation Abstracts International, Volume: 57-03, Sectio

Computer Science

4

Thermal Conduction, Kahn Cooling

Scientific paper

The existence and isotropy of the soft X-ray background is discussed, and explored, using a one-dimensional hydrocode with non-equilibrium cooling, multiple explosions, and dust. Analytical results derived from thermal conduction and Kahn cooling are compared with results from the hydrocode. The temperature in a hot bubble of gas evolving under these conditions is found to be a simple function of radius, T(r)=Tcentral(1-(r/R shell)^2)^{2/7}. Using this relation, the equilibrium emission is found for a bubble of radius 70-100 pc. Multiple explosions are found to be able to easily create such large bubbles, and the results also predict that the emission would be proportional to bubble radius, which agrees with one explanation of the X-ray--NH anti -correlation. In order to match the observed emission, however, the pressure in the bubble must be at least 16,500 cm^{-3}K.

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