X-ray emission and dynamics from large diameter superbubbles: The case of N 70 superbubble

Details X-ray emission and dynamics from large diameter superbubbles: The case of N 70 superbubble X-ray emission and dynamics from large diameter superbubbles: The case of N 70 superbubble

2011-02-15

arxiv.org/abs/1102.2938v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

9 pages, 11 figures, ApJ accepted

Scientific paper

The morphology, dynamics and thermal X-ray emission of the superbubble N70 is studied by means of 3D hydrodynamical simulations, carried out with the {\sc{yguaz\'u-a}} code. We have considered different scenarios: the superbubble being the product of a single supernova remnant, of the stellar winds from an OB association, or the result of the joint action of stellar winds and a supernova event. Our results show that, in spite that all scenarios produce bubbles with the observed physical size, only those where the bubble is driven by stellar winds and a SN event are successful to explain the general morphology, dynamics and the X-ray luminosity of N70. Our models predict temperatures in excess of $10^8 \mathrm{K}$ at the interior of the superbubble, however the density is too low and the emission in thermal X-ray above $2 \mathrm{keV}$ is too faint to be detected.

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