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Phenomenology and Dynamical Evolution of Compact Steep Spectrum Sources

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dc.contributor.author Ezeugo, Jeremiah Chukwuemerie
dc.date.accessioned 2017-03-27T15:25:33Z
dc.date.available 2017-03-27T15:25:33Z
dc.date.issued 2017-03-27
dc.identifier.uri http://hdl.handle.net/123456789/4259
dc.description.abstract Statistical, analytical and numerical methods have been used to develop a model for phenomenology and dynamical evolution of Compact Steep Spectrum (CSS) sources through the ambient medium of density, e n , within a characteristic time, T . Results show that the empirical relation between spectral turnover, p n , and D implies that ~ 0.34 p e n n ,suggesting that the spectral turnover constitutes a characteristic signature of dense gases around CSS sources. However, since the characteristic age of the source is proportional to D , the p n - D relation seems to suggest a decrease in p n as the source ages. This implies that above a certain age range, spectral turnover, p n , may not be observed. The upper limit of this age range corresponds to the order of the minimum age of larger radio sources. Therefore, the effects of orientation and density do not obviate the fact that these sources are in their early stages of evolution; hence, we suggest that CSS sources are young radio sources growing in dense media. en_US
dc.language.iso en en_US
dc.subject Radio Galaxies en_US
dc.subject Blazars en_US
dc.subject Asymmetric Objects en_US
dc.subject Central Engines en_US
dc.subject Lobes en_US
dc.subject Compact Symmetric Objects en_US
dc.title Phenomenology and Dynamical Evolution of Compact Steep Spectrum Sources en_US
dc.type Thesis en_US

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