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  • Study of Radio and Optical Polarization Anisotropies in the Electromagnetic Waves from Extragalactic Sources 
    Sarala, S (Astronomical Society of India, 2003)
    Polarizations of electromagnetic radiation from active galactic nuclei (AGN) show some interesting effects such as the existence of a global anisotropy in the orientations of the radio wave polarizations from distant radio ...
  • Study of sky condition at Raipur and calibration of the photometer-telescope system 
    Padmakar; Barway, Sudhanshu; Pandey, S. K (Astronomical Society of India, 2000)
    To investigate local sky condition for valuable astronomical observation, we obtained values of atmospheric extinction coefficients in BVR filters for over 150 nights during the period of 1994 to 1997. Our observation over ...
  • Study of small-scale features observed in solar atmosphere 
    Narang, Nancy (Indian Institute of Astrophysics, 2019-07)
    The solar atmosphere is populated with various small-scale features which are observed to be very dynamic and highly structured. The advent of modern instruments with high spatial, spectral and temporal resolution, have ...
  • Study of solar chromosphere: Variation of Calcium K line profiles with solar cycle 
    Sindhuja, G (Indian Institute of Astrophysics, 2015-07)
    The various features on the solar surface like sunspots, plages, network, active network play a main role in the solar variability. This thesis uses observations which were started in an effort to delineate the role of ...
  • Study of solar wind using single-station interplanetary scintillation 
    Manoharan, P. K (Astronomical Society of India, 1993)
    This thesis is based on the study of interplanetary scintillation (IPS) measurements using compact radio sources. In this study, I have shown for the first time that the solar-wind velocities may be estimated reliably and ...
  • A study of some optical phenomena associated with solar flares 
    Bhatnagar, A; Punetha, L. M (Government Observatory, Madras, 1962-10)
  • A study of spatial structure of galactic open star clusters 
    Nilakshi; Sagar, R; Pandey, A. K; Mohan, V (E D P Sciences, 2002-02)
    In order to study the relation between the core and corona in galactic star clusters, the spatial structure of 38 rich open star clusters has been studied using radial density profiles derived from the photometric data of ...
  • Study of star cluster populations in the magellanic clouds 
    Prasanta Kumar Nayak (Indian Institute of Astrophysics, 2019-08)
    The Magellanic Clouds (MCs), neighbouring galaxies to the Milky Way (MW), consist of a pair of irregular type of galaxies : Large Magellanic Cloud (LMC) and Small Mag- ellanic Cloud (SMC). The recent proper motion study ...
  • Study of star formation in dual nuclei galaxies using UVIT observations 
    Rubinur, K; Das, M; Kharb, P; Yadav, J; Mondal, C; Rahna, P. T (Oxford University Press on behalf of Royal Astronomical Society., 2024-03)
    We have used the Ultraviolet Imaging Telescope (UVIT) aboard AstroSat to study star formation in a sample of nine dual nuclei galaxies with separations <≈ 11 kpc, which is an expected outcome of galaxy mergers. To minimize ...
  • A Study of Star Formation in Nearby Starburst Galaxies 
    Ravindranath, Swara (Indian Institute of Astrophysics, Bangalore, 1999-06)
  • A Study of Star Formation in Nearby Starburst Galaxies 
    Ravindranath, Swara (Indian Institute of Astrophysics, Bangalore, 1999-06)
  • Study of star formation in NGC 1084 
    Ramya, S; Sahu, D. K; Prabhu, T. P (Blackwell Publishing, 2007-10)
    We present UBVRI broad-band, Hα narrow-band photometry of the star-forming complexes in the infrared bright galaxy NGC 1084. Results of medium-resolution spectroscopy of some of the brighter complexes are also discussed. ...
  • Study of stellar relics from the early galaxy 
    Susmitha Rani, A (Indian Institute of Astrophysics, 2017-07)
    The thesis, in general aims at studying the early history of the Milkyway through the chemical abundances of metal poor stars in the Halo and in the satellite galaxies of the Milkyway. Halo of a galaxy is one of the early ...
  • Study of stellar streams in the galaxy 
    Ramya, P (Indian Institute of Astrophysics, 2014-02)
    Our Galaxy, also called the Milky Way, is a spiral galaxy consisting of three major distinct components: bulge, disc and halo. They differ from each other in their structural as well as kinematical and chemical properties. ...
  • Study of Sun's "hydromagnetic" Oscillations Using Sunspot Data 
    Gokhale, M. H; Javaraiah, J; Hiremath, K. M (International Astronomical Union, 1990)
    Spherical-harmonic-fourier (SHF) analysis of sun’s ‘nominal toroidal magnetic field’, computed using sunspot data during 1874-1976, shows that sunspot activity can be considered as possibly originating in interference of ...
  • Study of Sun's Long Period Oscillations 
    Hiremath, K. M (Indian Institute of Astrophysics, Bangalore, 1994-07)
  • Study of Sun's rotation and solar activity 
    Javaraiah, J (Astronomical Society of India, 2002-09)
    In my thesis I have presented many interesting properties of Sun's rotation and magnetic activity derived from extensive analysis of over 100 year photoheliographic data on sunspot activity and 26 year's data on ...
  • Study of Sun's Rotation and Solar Activity 
    Javaraiah, J (Indian Institute of Astrophysics, Bangalore, 2000-09)
  • Study of sun-like G stars and their exoplanets 
    Gurumath, S. R (Vellore Institute of Technology and Indian Institute of Astrophysics, 2019-05)
    By employing exoplanetary physical and orbital characteristics, aim of this study is to understand the genesis, dynamics, chemical abundance and magnetic field structure of Sun-like G stars and relationship with their ...
  • Study of sunspot Penumbra to Umbra area ratio using Kodaikanal white-light digitised data 
    Bibhuti Kumar Jha; Mandal, Sudip; Banerjee, D (Springer, 2019-06)
    We study the long-term behaviour of the sunspot penumbra to umbra area ratio by analysing recently digitised Kodaikanal white-light data (1923 – 2011). We implement an automatic umbra extraction method and compute the ratio ...

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