| Summary: | The thesis deals with various topics under the broader scope of solar physics. AH the topics discussed use the best available technology. The motivation for the research was to understand the complex magnetic field structure on the solar surface and solar atmosphere. We use a combination of imaging and spectral analysis to investigate physical as well as spectral properties of the solar cycle and the transients in different layers of the solar atmosphere. The imaging techniques give information regarding the physical characteristics of an event such as the lifetime, length, width and evidence of oscillations, whereas the spectral methods provide information regarding the Doppler velocities, densities, and other thermodynamic properties. The thesis begins with a brief discussion of the analytical techniques and data reduction. We then introduce physics involving transients such as solar spicules. The thesis then discusses statistical analysis on a new breed of spicule known as spicular-type events. The discussion then follows the first evidence of high frequency waves observed in the spicules and provides one of the solutions for the century long coronal heating paradigm.The thesis also discusses small scale events associated with flares and magnetic reconnections known as Ellerman bombs. In the concluding science chapter, the thesis discusses the contribution of asymmetries occuring towards the working of the solar cycle in the active magnetic flux region. The gist of the thesis involves solving challenging science questions in solar physics, which not only serve as a stepping-stone for current solar physics research, but also provides science cases for the next generation of telescopes.
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