Giant Explosion at the Galactic Center and Huge Shocked Shells in the Halo

Details Giant Explosion at the Galactic Center and Huge Shocked Shells in the Halo Giant Explosion at the Galactic Center and Huge Shocked Shells in the Halo

1994-02-14

arxiv.org/abs/astro-ph/9402034v1

Astronomy and Astrophysics

Astrophysics

Plain TEX 4 pages Figs upon request, Univ. Tokyo ASTRO PREPRINT No.94-04 (To appear in Ap.J. Letter)

Scientific paper

10.1086/187480

We simulate the propagation of a shock front through the galactic halo induced by an explosion and/or a starburst at the galactic center. A huge dumbbell ($\Omega$)-shaped shock front produced by an explosion of energy $3\times 10^{56}$ ergs about fifteen million years ago can mimic the radio and X-ray North Polar Spur as well the southern large X-ray spur. The post-shock high-temperature gas in the corona will explain the observed X-ray bulge around the galactic center. Key workds Galaxy: center -- Galaxy: halo -- Radio continuum: general -- Shock wave -- X-rays: general

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