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Evolution of galactic density waves at the unstable stage
Affiliation:1. Coal & Energy Division, CSIR-North East Institute of Science & Technology, Jorhat 785006, Assam, India;2. Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India;3. Department of Physics, Kristu Jayanti College (Autonomous), Bangalore 560077, India;1. State Key Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China;2. Center for Atmospheric Environmental Studies, Beijing Normal University, Beijing 100875, China;3. School of Environment, Tsinghua University, Beijing 100084, China;4. Department of Environmental Health Sciences School of Public Health University at Albany, State University of New York One University Place Rensselaer, NY 12144, USA;5. Analysis and Testing Center, Beijing Normal University, Beijing 100875, China
Abstract:An evolution law of galactic density waves is derived from the equations of stellar dynamics and compared with the results [4] obtained earlier by the author using fluid mechanics. The comparison shows that the results for the unstable stage obtained in the two approaches are close to each other.
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