Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004apj...601..885v&link_type=abstract
The Astrophysical Journal, Volume 601, Issue 2, pp. 885-895.
Astronomy and Astrophysics
Astronomy
15
Conduction, Ism: Magnetic Fields, Methods: Numerical, Ism: Supernova Remnants, X-Rays: Ism
Scientific paper
Several physical mechanisms have been studied in order to explain why composite supernova remnants (SNRs) have shell-like morphologies in the radio continuum while their X-ray emission is centrally peaked. One of the proposed mechanisms has been the presence of thermal conduction, which can raise the density at the center of SNRs, increasing the X-ray emission from these regions. In this work, we have carried out axisymmetric numerical simulations with the adaptive grid Yguazú-a code, which includes advection of the magnetic field and thermal conduction. We have considered cases with anisotropic and isotropic thermal conduction, as well as with no conduction. We have simulated X-ray (as well as radio synchrotron) emission maps from our numerical simulations, which can be directly compared with observations.
Giacani Elsa B.
Martinell Julio J.
Raga Alejandro C.
Velázquez Pablo F.
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