Statistics – Computation
Scientific paper
Sep 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...138..215b&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 138, no. 2, Sept. 1984, p. 215-224. Research supported by the University of Ca
Statistics
Computation
26
Computational Fluid Dynamics, Interstellar Matter, Supernova Remnants, Gas Dynamics, Radiative Transfer, X Ray Astronomy
Scientific paper
The present two-dimensional, numerical hydrodynamical calculations for the interactions of two SNRs that explode in the low density interstellar medium cover four cases: (1) the supernovae explode in the same place, but at different times; (2) the second supernova explodes outside the expanding shell of the first; (3) the second explosion occurs outside the expanding shell of the first, but at a greater distance than in case (2); and (4) the second supernova explodes exactly at the expanding shell of the first. In the last three cases, the interaction occurs near the end of the adiabatic expansion of the first remnant, leading to a merging of the SNRs into a single nonspherical structure. In the first case, the kinetic energy of the combined SNR is greater than that of a simultaneous explosion. Thermal X-ray maps for case (4) show the nonsphericity of the emission in this spectral region.
Bodenheimer Peter
Tenorio-Tagle Guillermo
Yorke Harold W.
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