Our Local Superbubble and Local Bubble Environments

Computer Science – Databases

Scientific paper

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Interstellar Dust Grains, Diffuse Emission, Infrared Cirrus, Interplanetary Magnetic Fields, X-Ray Sources, X-Ray Bursts, Astronomical Catalogs, Atlases, Sky Surveys, Databases, Retrieval Systems, Archives, Etc.

Scientific paper

We briefly describe the local superbubbles and supershells that lie near the Sun. These include, of course, the famous ones-the Orion/Eridanus superbubble and the North Polar Spur shell. It also includes less famous, less prominent, older, but equally important ones: we stress the elliptical Lindblad Ring, which surrounds the Sun and has a maximum diameter 364 pc, and GSH 238+00+09, which is a huge old shell. Both appear to be responsible for shock-induced star formation; GSR 238+0+09, in particular, may be responsible for the Orion and Gum associations.
We then turn to the Local Bubble and describe some of its little-known and remarkable occupants: interstellar scattering centers, which are ionized blobs having sizes of a few Earth diameters, and one of the coldest HI clouds known, which produces prominent X-ray shadow and allows us to estimate the local X-ray production rate within a few dozen parsec from the Sun.

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