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- W3104098251 endingPage "113" @default.
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- W3104098251 abstract "The neutral hydrogen structure of high-velocity cloud A0 (at about −180 km s−1) has been mapped with a 91 resolution. Gaussian decomposition of the profiles is used to separately map families of components defined by similarities in center velocities and line widths. About 70% of the H i gas is in the form of a narrow, twisted filament whose typical line widths are of the order of 24 km s−1. Many bright features with narrow line widths of the order of 6 km s−1, clouds, are located in and near the filament. A third category with properties between those of the filament and clouds appears in the data. The clouds are not always co-located with the broader line width filament emission as seen projected on the sky. Under the assumption that magnetic fields underlie the presence of the filament, a theorem is developed for its stability in terms of a toroidal magnetic field generated by the flow of gas along field lines. It is suggested that the axial magnetic field strength may be derived from the excess line width of the H i emission over and above that due to kinetic temperature by invoking the role of Alfvén waves that create what is in essence a form of magnetic turbulence. At a distance of 200 pc the axial and the derived toroidal magnetic field strengths in the filament are then about 6 μG while for the clouds they are about 4 μG. The dependence of the derived field strength on distance is discussed." @default.
- W3104098251 created "2020-11-23" @default.
- W3104098251 creator A5034989212 @default.
- W3104098251 date "2013-03-15" @default.
- W3104098251 modified "2023-09-25" @default.
- W3104098251 title "HIGH-RESOLUTION OBSERVATIONS AND THE PHYSICS OF HIGH-VELOCITY CLOUD A0" @default.
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- W3104098251 doi "https://doi.org/10.1088/0004-637x/766/2/113" @default.
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