50 citations · 136 across the 12 of their papers we have counts for
12 papers
Equator to Pole Solar Chromospheric Differential Rotation using Ca-K Features Derived from Kodaikanal Data
Hema Kharayat, Jagdev Singh, Muthu Priyal +1
Differential rotation is one of the basic characteristics of the Sun, and it plays an important role in generating the magnetic fields and its activities. We investigated rotation…
Data processing of Visible Emission Line Coronagraph Onboard ADITYA L1
Muthu Priyal, Jagdev Singh, B. Raghavendra Prasad +28
ADITYA-L1 is India's first dedicated mission to observe the sun and its atmosphere from a halo orbit around L1 point. Visible emission line coronagraph (VELC) is the prime payload…
Variation of small scale magnetic fields over a century using Ca-K images as proxy
Jagdev Singh, Muthu Priyal, B. Ravindra +2
A combined uniform and long-time series of Ca-K images from the Kodaikanal Observatory (KO), Mount Wilson Observatory (MWO), and Mauna Loa Solar Observatory (MLSO) were used to ide…
Temporal and latitudinal variations of Ca-K plage and network area: An implication to meridional flows
Muthu Priyal, Jagdev Singh, Belur Ravindra +1
The Ca-K spectroheliograms obtained at the Kodaikanal observatory (KO) are used to generate a uniform time series using the equal contrast technique (ECT) to study the long and sho…
Data Pipeline Architecture and Development for VELC onboard Space Solar Mission AdityaL1
Jagdev Singh, B. Raghavendra Prasad, Chavali Sumana +4
ADITYA L-1 is India's first dedicated mission to study Sun and its atmosphere with Visible Emission Line Coronagraph (VELC), a major payload on ADITYA-L1. VELC has provision to mak…
Variation of Chromospheric Features as a Function of Latitude and Time using Ca-K Spectroheliograms for Solar Cycles 15-23: Implications for Meridional Flow
Pooja Devi, Jagdev Singh, Ramesh Chandra +2
We have analysed the Ca-K images obtained at Kodaikanal Observatory as a function of latitude and time for the period of 1913 - 2004 covering the Solar Cycle 15 to 23. We have clas…
Determining the Variations of Ca-K index and Features using a Century Long Equal Contrast Images from Kodaikanal Observatory
Jagdev Singh, Muthu Priyal, B. Ravindra
In the earlier analysis of Ca-K spectroheliograms obtained at Kodaikanal Observatory, the "Good" images were used to investigate variations in the chromosphere. Still, the contrast…
Long-term Variations in the Intensity of Plages and Networks as Observed in Kodaikanal Ca-K Digitized Data
Muthu Priyal, Jagdev Singh, Ravindra Belur +1
In our previous article (Priyal et al. in Solar Phys. 289, 127, 2014) we have discussed the details of observations and methodology adopted to analyze the Ca-K spectroheliograms ob…
A Statistical Analysis of Solar Surface Indices Through the Solar Activity Cycles 21-23
Umit Deniz Goker, Jagdev Singh, Ferhat Nutku +1
Variations of total solar irradiance (TSI), magnetic field, Ca II K-flux, faculae and plage areas due to the number and the type of sunspots/sunspot groups (SGs) are well establish…
Polar Network Index as a magnetic proxy for the solar cycle studies
Muthu Priyal, Dipankar Banerjee, Bidya Binay Karak +4
The Sun has a polar magnetic field which oscillates with the 11 year sunspot cycle. This polar magnetic field is an important component of the dynamo process which is operating in…
Digitized archive of the Kodaikanal images: Representative results of solar cycle variation from sunspot area determination
B. Ravindra, T. G. Priya, K. Amareswari +3
Photographic images are valuable data resources for studying long term changes in the solar magnetic field and its influence on the Earth's climate and weather. We digitized more t…
Determination of the chromospheric quiet network element area index and its variation during 2008-2011
Jagdev Singh, B. Ravindra, R. Selvendran +4
Generally it has been considered that the plages and sunspots are the main contributors to the solar irradiance. There are small scale structures on the sun with intermediate magne…