Theoretical sigma-D relations for shell-type galactic supernova remnants

摘要

Relations between radio surface brightness (sigma) and diameter (D) of supernova remnants (SNRs) are important in astronomy. In this paper, following the work Duric and Seaquist (ApJ 301:308, 1986) at adiabatic phase, we carefully investigate shell-type supernova remnants at radiative phase, and obtain theoretical sigma-D relation at radiative phase of shell-type supernova remnants at 1GHz. By using these theoretical sigma-D relations at adiabatic phase and radiative phase, we also roughly determine phases of some supernova remnant from observation data.