Members of Sun and Solar System

1. Banerjee D.   View profile    View Personal Home Page

He is interested on studies on the solar atmosphere. Multi-wavelength study combining imaging and spectral observations from space based and ground based instruments. He is also interested on the long term study of the sun using digitized data from the Kodaikanal Observatory. Some of national projects where he is currently actively involved.

Visit Dipankar’s home page or some of his student’s homepage: Tanmoy Samanta, Vaibhav Pant, Sudip Mandal, Nancy Narang, Subhamoy Chatterjee.

2. B. Ravindra  View profile    View Personal Home Page Go to Top

His Research interests are:

(I) Measuring 3 components of the velocity field using MEF

Minimum Energy Fit a velocity inversion technique, which uses vector magnetogram time sequence and induction equation to estimate the velocity of magnetic footpoints motion.

(II) Moving Magnetic Features in sunspot penumbra

Observational study of Moving Magnetic Features such as its origin, velocity, its orientation and many more properties using high-resolution magnetograms, Dopplergrams & continuum images.

(II) High resolution imaging of the Sun in Optical and EUV

Observational study of small scale magnetic features seen in G-band, Ca II H, H_alpha, C IV 1600 A and of course in high resolution magnetic images.

(III) Long term studies of sunspot number and area

Sunspot number and area varies over a period of 11-years. Observational study of long term variations in solar activity.

(IV) Active region filament eruptions and energetic events

Study of pre-eruptive phase symptoms of filament eruptions and triggering mechanisms.

3. E. Ebenezer   View profile    View Personal Home Page Go to Top

4. G. S. Suryanarayana  View profile    View Personal Home Page Go to Top

His Research interests are in the study of solar flares and sunspot activity.

5. Kathiravan C.   View profile    View Personal Home Page Go to Top

His interests lie in developing methods to effectively forecast the geo-effective or earth-directed events by combining radio data observed with low frequency radio telescopes and data obtained at other wavelengths. He is deeply involved in operations, maintinance and development of facilities at the Gauribidanur radio observatory.

6. K. Nagaraju   View profile    View Personal Home Page Go to Top

His interests are in the areas of :

(I) Solar instrumentation

Solar polarimeters, Multi-line spectropolarimeters, Conventional optics as well as liquid crystals based polarimeters, Camera development around CMOS and CCD sensors, Sun-as-a-star magnetic field measurements

(II) Magnetic field dynamics in the solar atmosphere

Magnetic field coupling in the solar atmosphere, Magnetic structure of sunspot, Small scale energetic events in the solar lower atmosphere

(II) Long term variability of the sun

Long term variability of the solar magnetic field on global scale

7. K. P. Raju  View profile    View Personal Home Page Go to Top

Spectroscopy of the solar corona using ground-based eclipse observations and space-based HINODE/EIS data. The study gives insights on coronal heating and acceleration of solar wind.

Spectroscopic studies of solar prominences - An observational program to study the H-alpha spectra of solar prominences using Kodaikanal Tunnel Telescope and spectrograph which gives useful information on the origin and evolution of CMEs.

Studies of Coronal hole and the Solar EUV Network using SOHO/CDS and SDO/AIA data give information on solar transition region and evolution of the network.

Studies of Chromospheric Network using the archival Kodaikanal Ca K data give the details of interaction of convective scales and magnetic field.

Variation of Ca K line spectra in different solar latitudes using Kodaikanal Tunnel Telescope and spectrograph give information on solar activity, synoptic variations and flux transfer on the solar surface.

Sun as a star and solar-stellar connections are studied using the Kodaikanal Ca K observations and space-based data.

8. Piyali Chatterjee  View profile    View Personal Home Page Go to Top

9. Ravinder K Banyal  View profile    View Personal Home Page Go to Top

His research interests are in development of astronomical instruments.

(I) Implementation of the iodine cell on the the VBT.Echelle spectrograph to improve the radial velocity precision of the instruments.

(II) Development of a passively stabilized Fabry-Perot Wavelength Calibrator.

(III) Development of a low order top-tiltimage compensation system as a step towards the development of as AO system for NLST.

(IV) Optical design and FEM analysis of optical systems.

10. R. Ramesh  View profile    View Personal Home Page Go to Top

His primary research interests are Design/Construction of low-frequency radio astronomy antennas and receiver systems, Development of algorithms for Synthesis Imaging in radio astronomy, Development of calibration schemes for low-frequency radio telescopes, Observations and interpretation of radio emission from the solar corona.

11. R. Selvendran  View profile    View Personal Home Page Go to Top

12. R Sridharan   View profile    View Personal Home Page Go to Top

His area of interset is in high resolution imaging of Solar chromosphere/photosphere and speckle imaging of near earth objects. He has developed a solar speckle masking code for solar image reconstruction, that can be used to reconstruct high resolution imaging from current and future solar telescopes.

13. S. P. Rajaguru  View profile    View Personal Home Page Go to Top

His research interests are:

(I) Solar Physics

Solar Physics Helioseismology: sunspots - subsurface structure and dynamics, large-scale flows in the interior and dynamics, atmospheric waves and dynamics, 3D magnetohydrodynamic (MHD) simulations of near-surface convection and oscillations. Solar cycle and long-term variability.

(II) Stellar Physics

Stellar surface convection, magnetism and radiative variability - 3D MHD simulations and applications to analyses of stellar light curves, spectroscopy and asteroseismology.

(III) Computing

High-Performance Computing (HPC), Large volume Data-intensive Computing and Analyses

14. Shanti Kumar Singh  View profile    View Personal Home Page Go to Top

(I) To study the kinematics and structural deformities inside the earth’s crust , several GPS units are installed at IAO-Hanle, Leh, Kodaikanal (IIA-CMMACS).

(II) CO2 monitoring units are installed at IAO-Hanle and recently at CREST, Hoskote (IIA-CMMACS)

(III) Skyradiometer (Prede, Japan) was installed at Hanle (2007) and Merak (2011) to study the aerosol content over the region (

To study aerosol radiative forcing, high altitude Aerosol Observatory has installed at IAO-Hanle during 2009 (IIA-VSSC-SPL)

Last updated on: September 23, 2019