90 citations · 478 across the 26 of their papers we have counts for
27 papers
Classification of circular polarization Stokes profiles in a sunspot using k-means clustering
Rohan Eugene Louis, Shibu K. Mathew, A. Raja Bayanna
The magnetic and velocity fields in sunspots are highly structured on small spatial scales which are encoded in the Stokes profiles. Our aim is to identify Stokes profiles in a sun…
A study of the propagation of magnetoacoustic waves in small-scale magnetic fields using solar photospheric and chromospheric Dopplergrams: HMI/SDO and MAST observations
Hirdesh Kumar, Brajesh Kumar, S. P. Rajaguru +2
In this work, we present a study of the propagation of low-frequency magneto-acoustic waves into the solar chromosphere within small-scale inclined magnetic fields over a quiet-mag…
Sustained heating of the chromosphere and transition region over a sunspot light bridge
Rohan E. Louis, Shibu K. Mathew, A. Raja Bayanna +2
Sunspot light bridges (LBs) exhibit a wide range of short-lived phenomena in the chromosphere and transition region. In contrast, we use here data from the Multi-Application Solar…
Investigating the relation between sunspots and umbral dots
Rahul Yadav, Rohan E. Louis, Shibu K. Mathew
Umbral dots (UDs) are transient, bright features observed in the umbral region of a sunspot. We study the physical properties of UDs observed in sunspots of different sizes. The ai…
Trigger of successive filament eruptions observed by SDO and STEREO
Sajal Kumar Dhara, Ravindra B., Pankaj Kumar +3
Using multi-wavelength observation from SDO and STEREO, we investigated the mechanism of two successive eruptions (F1 & F2) of a filament in active region NOAA 11444 on 27 march, 2…
Imaging Spectropolarimeter for Multi-application Solar Telescope at Udaipur Solar Observatory: Characterization of polarimeter and preliminary observations
Alok Ranjan Tiwary, Shibu K. Mathew, A. Raja Bayanna +2
Multi-Application Solar Telescope (MAST) is a 50 cm off-axis Gregorian telescope and started operational recently at Udaipur Solar Observatory (USO). For understanding the evolutio…