... crowding of the cloud orbits and increase the cloud cloud collision frequency, which, in turn, can give rise to shocks ... Thus, the presence of a leading wave in the Galactic disk allows certain deviations from an ideal spiral pattern to be ...
... 2007 Page 2 Chapter 12 Active Galactic Nuclei (AGN) and Supermassive Black Holes ... Introductory Course Fall 2007 Page 12 When Active Galactic Nuclei were most active ...
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... directed away from the Galactic center, and the positive azimuthal residual velocities V are in the sense of Galactic rotation ... The X -axis is directed away from the galactic center, and the Y -axis is in the direction of the galactic rotation. ...
... Galactic center 30 km s1 Fig. 1. (a) The residual velocities of OB-associations ... from the galactic center, the Y axis is in the direction of the Galactic rotation ...
... 2 Synchrotron radiation is observed, e.g., in Neutron stars rotating magnetosphere Supernova remnants Spiral galaxies galactic magnetic fields Galaxy clusters Active galactic nuclei, jets Synchrotron radiation is a typical form of non-thermal radiation ...
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... Light pressure, gravitational interaction with the planets, and collisions and explosions of artefacts in the outer parts of a ... The level of Galactic cosmic radiation is 4*10 -7 rad/s (Murphy 1981). ...