Asymmetric supernova remnants generated by Galactic, massive runaway stars

摘要: After the death of a runaway massive star, its supernova shock wave interacts with bow shocks produced by defunct progenitor, and may lose energy, momentum, spherical symmetry before expanding into local interstellar medium (ISM). We investigate whether initial mass space velocity these progenitors can be associated asymmetric remnants. run hydrodynamical models supernovae exploding in pre-shaped moving Galactic core-collapse progenitors. find that accumulate more than about1.5M⊙ generate The first collides 160 − 750yr after supernova, collision lasts until 830 4900yr. is then located 1.35 5pc from center explosion, it expands freely ISM, whereas opposite direction channelled region undisturbed wind material. This applies to an initially 20M⊙ progenitor 20kms −1 our 40M⊙ progenitor. These remnants mixing ISM gas, stellar ejecta particularly important upstream explosion. Their lightcurves are dominated emission optically-thin cooling X-ray shocked gas. th at likely observed [OIII] �5007 spectral line or soft energy-band X-rays. Finally, we discuss results context such as 3C391 Cygnus Loop.