Astronomy and Astrophysics, General Physics and Astronomy, Space and Planetary Science, Instrumentation
16
Scopus Publications
58
Scholar Citations
5
Scholar h-index
2
Scholar i10-index
Scopus Publications
Design, fabrication, and characterization of the thermal filter assembly on the Solar Ultraviolet Imaging Telescope onboard Aditya-L1 Janmejoy Sarkar, Avyarthana Ghosh, Sreejith Padinhatteeri, Ravi Kesharwani, Ramaprakash A. N., Durgesh Tripathi, Bhargava Ram B. S., R. Venkateshwaran, Ketan Patel, Melvin James, Mintu Karmakar, Akshay Kulkarni, Deepa Modi, Chaitanya Rajarshi, Girish M. Gouda, Aafaque R. Khan, Abhijit Adoni, Faisal Mustafa Sajjade, Pravin Khodade, Abhay Kohok Journal of Astronomical Telescopes Instruments and Systems, 2025
Test and Calibration of the Solar Ultraviolet Imaging Telescope (SUIT) on Board Aditya-L1 Janmejoy Sarkar, V. N. Nived, Soumya Roy, Rushikesh Deogaonkar, Sreejith Padinhatteeri, A. Raja Bayanna, Ravi Kesharwani, A. N. Ramaprakash, Durgesh Tripathi, Rahul Gopalakrishnan, Bhushan Joshi, Sakya Sinha, Mahesh Burse, Manoj Varma, Anurag Tyagi, Reena Yadav, Chaitanya Rajarshi, H. N. Adithya, Abhijit Adoni, Gazi A. Ahmed, Dipankar Banerjee, Rani Bhandare, Bhargava Ram B.S., Kalpesh Chillal, Pravin Chordia, Avyarthana Ghosh, Girish Gouda, Anand Jain, Melvin James, Evangeline Leeja Justin, Deepak Kathait, Aafaque Khan, Pravin Khodade, Abhay Kohok, Akshay Kulkarni, Ghanshyam Kumar, Nidhi Mehandiratta, Vilas Mestry, Deepa Modi, Srikanth Motamarri, K. Nagaraju, Dibyendu Nandy, S. Narendra, Sonal Navle, Nashiket Parate, Sujit Punnadi, A. Ravi, K. Sankarasubramanian, Ghulam Sarvar, Nigar Shaji, Sami K. Solanki, Rethika T, Koushal Vadodariya, D. R. Veeresha, R. Venkateswaran Solar Physics, 2025
X-class Flare on 2023 December 31 Observed by the Solar Ultraviolet Imaging Telescope on Board Aditya-L1 Soumya Roy, Durgesh Tripathi, Vishal Upendran, Sreejith Padinhatteeri, A. N. Ramaprakash, Nived V. N., K. Sankarasubramanian, Sami K. Solanki, Janmejoy Sarkar, Rahul Gopalakrishnan, Rushikesh Deogaonkar, Dibyendu Nandy, Dipankar Banerjee Astrophysical Journal Letters, 2025 We present the multiwavelength study of the ejection of a plasma blob from the limb flare SOL2023-12-31T21:36:00 from NOAA 13536 observed by the Solar Ultraviolet Imaging Telescope (SUIT) on board Aditya-L1. We use SUIT observations along with those from the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory and Spectrometer/Telescope for Imaging X-rays (STIX) on board Solar Orbiter to infer the kinematics and thermal nature of the ejected blob and its connection to the associated flare. The observations show that the flare was comprised of two eruptions. The blob was ejected during the first eruption and later accelerated to velocities over 1500 km s−1 measured at a maximum projected height of ∼178 Mm from the Sun’s surface. The acceleration of the ejected plasma blob is cotemporal with the bursty appearance of the hard X-ray light curve recorded by STIX. Radio spectrogram observations from STEREO-A/WAVES and RSTN reveal type III bursts at the same time, indicative of magnetic reconnection. DEM analysis using AIA observations suggests the plasma blob is comprised of cooler and denser plasma in comparison to the ambient corona. To the best of our knowledge, this is the first observation of such a plasma blob in the near-ultraviolet providing crucial measurements for eruption thermodynamics.
Near- and Mid-ultraviolet Observations of X-6.3 Flare on 2024 February 22 Recorded by the Solar Ultraviolet Imaging Telescope on board Aditya-L1 Soumya Roy, Durgesh Tripathi, Sreejith Padinhatteeri, A. N. Ramaprakash, Abhilash R. Sarwade, Nived V. N., Janmejoy Sarkar, Rahul Gopalakrishnan, Rushikesh Deogaonkar, K. Sankarasubramanian, Sami K. Solanki, Dibyendu Nandy, Dipankar Banerjee Astrophysical Journal Letters, 2025 Solar flares are regularly observed in extreme-ultraviolet soft X-rays (SXRs) and hard X-rays (HXRs). However, those in near- and mid-ultraviolet are sparse. The Solar Ultraviolet Imaging Telescope (SUIT) on board the Aditya-L1, launched on 2023 September 2, provides regular observations in the 200–400 nm wavelength range through 11 filters. Here, we report the observation of the X6.3 flare on 2024 February 22 using eight narrowband (NB) filters of SUIT. We have also used co-spatiotemporal observations from Solar Dynamics Observatory/Atmospheric Imaging Assembly (SDO/AIA), Solar Orbiter/STIX, GONG Hα, Aditya-L1/SoLEXS, and GOES. We obtained light curves over the flaring region from AIA 1600 and 1700 Å and GONG Hα and compared them with the disk-integrated light curve obtained from GOES and SoLEXS SXRs and STIX HXRs. We find that the flare peaks in SUIT NB01, NB03, NB04, and NB08 filters simultaneously with HXRs 1600 and 1700 Å, along with the peak temperature obtained from SoLEXS. In contrast, in NB02 and NB05, the flare peaks ∼2 min later than the HXR peak, while in NB06 and NB07, the flare peaks ∼3 min after the GOES SXR peak. To the best of our knowledge, this is the first observation of a flare in these wavelengths (except in NB03, NB04, and NB05). Moreover, for the first time, we show the presence of a bright kernel in NB02. These results demonstrate the capabilities of SUIT observations in flare studies.
The Solar Ultraviolet Imaging Telescope on Board Aditya-L1 Durgesh Tripathi, A. N. Ramaprakash, Sreejith Padinhatteeri, Janmejoy Sarkar, Mahesh Burse, Anurag Tyagi, Ravi Kesharwani, Sakya Sinha, Bhushan Joshi, Rushikesh Deogaonkar, Soumya Roy, V. N. Nived, Rahul Gopalakrishnan, Akshay Kulkarni, Aafaque Khan, Avyarthana Ghosh, Chaitanya Rajarshi, Deepa Modi, Ghanshyam Kumar, Reena Yadav, Manoj Varma, Raja Bayanna, Pravin Chordia, Mintu Karmakar, Linn Abraham, H. N. Adithya, Abhijit Adoni, Gazi A. Ahmed, Dipankar Banerjee, B. S. Bhargava Ram, Rani Bhandare, Subhamoy Chatterjee, Kalpesh Chillal, Arjun Dey, Achim Gandorfer, Girish Gowda, T. R. Haridas, Anand Jain, Melvin James, R. P. Jayakumar, Evangeline Leeja Justin, K. Nagaraju, Deepak Kathait, Pravin Khodade, Mandeep Kiran, Abhay Kohok, Natalie Krivova, Nishank Kumar, Nidhi Mehandiratta, Vilas Mestry, Srikanth Motamarri, Sajjade F. Mustafa, Dibyendu Nandy, S. Narendra, Sonal Navle, Nashiket Parate, Anju M. Pillai, Sujit Punnadi, A. Rajendra, A. Ravi, Bijoy Raha, K. Sankarasubramanian, Ghulam Sarvar, Nigar Shaji, Nidhi Sharma, Aditya Singh, Shivam Singh, Sami K. Solanki, Vivek Subramanian, Rethika T, Srikanth T, Satyannarayana Thatimattala, Hari Krishna Tota, T. S. Vishnu, Amrita Unnikrishnan, Kaushal Vadodariya, D. R. Veeresha, R. Venkateswaran Solar Physics, 2025
Photometric calibration and spectral validation of the Solar Ultraviolet Imaging Telescope onboard Aditya-L1 Janmejoy Sarkar, Soumya Roy, Ramaprakash A. N., Rushikesh Deogaonkar, Sreejith Padinhatteeri, Durgesh Tripathi, Avyarthana Ghosh, Raja Bayanna Ankala, Gazi Ameen Ahmed Journal of Astronomical Telescopes Instruments and Systems, 2025 The Solar Ultraviolet Imaging Telescope (SUIT) is one of the seven payloads on board the Aditya-L1 mission of the Indian Space Research Organization. SUIT provides full and partial disk images of the Sun in the 200- to 400-nm wavelength range. This would help us probe the solar atmosphere at different heights and understand the mass and energy transfer process among its layers. For the first time, SUIT will also help us measure spatially resolved solar spectral irradiance at this wavelength band, which is significant for studying the Sun–climate relationships. To perform these studies, it is necessary to photometrically calibrate the payload and validate the spectral coverage of the various bandpasses. We perform the photometric calibration and spectral validation of eight bandpasses using light of known intensity and spectral coverage. For photometric calibration, the telescope throughput is modeled using the Sun-as-a-star spectrum from SOLar STellar Irradiance Comparison Experiment and SOLar SPECtrometer. The modeled throughput is compared with in-lab measurements taken with light of known intensity. The ratio of measured photoelectrons gathered with the modeled prediction agrees within 20%. For spectral validation, readings are taken across the transmission spectrum of each filter, keeping adjacent readings independent of each other. The relative intensity measured at each wavelength is seen to trace the modeled telescope bandpass for that filter. These tests could not be performed for filters with bandpasses operating below 250 nm (NB01, BB01, and BB02), primarily due to heavy atmospheric attenuation in these wavelengths leading to decreased SNR of the data. The experimentally measured results agree closely with the modeled values, validating SUIT’s optical performance and presenting the reliability of the developed throughput model.
A Novel Feature Selection Method for Solar Flare Forecasting Ashwini Nagaraj Shenoy, Deepu Vijayasenan, Raghavendra S Bobbi, Sreejith Padinhatteeri, Adithya H N 2024 IEEE Space Aerospace and Defence Conference Space 2024, 2024 Large solar flares (SFs) can disrupt radio communication and harm instruments and astronauts. Hence, it’s crucial to predict SFs. However, the mechanism that triggers SFs is not yet known. We only have several physical features believed to be related to the process. This makes choosing the most impactful features for SF production important. We investigate a feature selection method based on the weights learned by a linear classifier. We use the Spaceweather HMI Active Region Patch (SHARP) summary parameters based on the Solar Dynamics Observatory’s Helioseismic and Magnetic Imager data records. The records are from May 2010 to December 2019.
The Solar Ultra-Violet Imaging Telescope (SUIT) Onboard Intelligence for Flare Observations Manoj Varma, Sreejith Padinhatteeri, Sakya Sinha, Anurag Tyagi, Mahesh Burse, Reena Yadav, Ghanshyam Kumar, Anamparambu Ramaprakash, Durgesh Tripathi, K. Sankarasubramanian, Krishnappa Nagaraju, Koushal Vadodariya, Srikar Tadepalli, Rushikesh Deogaonkar, Manjunath Olekar, Mohamed Azaruddin, Amrita Unnikrishnan Solar Physics, 2023
The Solar Ultraviolet Imaging Telescope: detector characterization and readout electronics testing S V Manoj Varma, Anurag Tyagi, Bhushan Joshi, Reena Yadav, Pravin Chordia, Ghanshyam Kumar, Sakya Sinha, Mahesh Burse, Sreejith Padinhatteri, Rushikesh Deogaonkar, A N Ramaprakash, Avyarthana Ghosh, Durgesh Tripathi, Janmejoy Sarkar, K Sankarasubramanian, K Nagaraju, Koushal Vadodariya, Ravi Kesharwani, Aafaque Khan, Manjunath Olekar, Mohamed Azaruddin Ras Techniques and Instruments, 2023
The Thermal Filter for the Solar Ultraviolet Imaging Telescope (SUIT) on-board Aditya-L1 Avyarthana Ghosh, Ravi Kesharwani, Aafaque R. Khan, Sreejith Padinhatteeri, Durgesh Tripathi, A. N. Ramaprakash, Ketan Patel, Tayaramma D. P. V. Jalluri, G. R. Madhumalathi, R. Venkateshwaran, S. Elumalai, Kinshuk Gupta, J. P. Nair, H. Sparrow, R. S. Worlikar, Anit Gupta, Sanjoy Pal Proceedings of SPIE the International Society for Optical Engineering, 2022
Unraveling the Secrets of the lower Solar Atmosphere: One year of Operation of the Solar Ultraviolet Imaging Telescope (SUIT) on board Aditya-L1 R Gopalakrishnan, S Roy, D Kathait, J Sarkar, D Tripathi, ... arXiv preprint arXiv:2508.08801 , 2025 2025
Design, fabrication, and characterization of the thermal filter assembly on the Solar Ultraviolet Imaging Telescope onboard Aditya-L1 J Sarkar, A Ghosh, S Padinhatteeri, R Kesharwani, R AN, D Tripathi, ... Journal of Astronomical Telescopes, Instruments, and Systems 11 (3), 034004 … , 2025 2025 Citations: 1
Test and calibration of the Solar Ultraviolet Imaging Telescope (SUIT) on board Aditya-L1 J Sarkar, VN Nived, S Roy, R Deogaonkar, S Padinhatteeri, AR Bayanna, ... Solar Physics 300 (5), 60 , 2025 2025 Citations: 2
X-class Flare on 2023 December 31 Observed by the Solar Ultraviolet Imaging Telescope on Board Aditya-L1 S Roy, D Tripathi, V Upendran, S Padinhatteeri, AN Ramaprakash, N VN, ... The Astrophysical Journal Letters 983 (1), L6 , 2025 2025
X-class flare on Dec 31, 2023, observed by the Solar Ultraviolet Imaging Telescope on board Aditya-L1 S Roy, D Tripathi, V Upendran, S Padinhatteeri, AN Ramaprakash, ... arXiv preprint arXiv:2504.04793 , 2025 2025
Near-and mid-ultraviolet observations of X-6.3 flare on 2024 February 22 recorded by the Solar Ultraviolet Imaging Telescope on board Aditya-L1 S Roy, D Tripathi, S Padinhatteeri, AN Ramaprakash, AR Sarwade, N VN, ... The Astrophysical Journal Letters 981 (1), L19 , 2025 2025 Citations: 1
The solar ultraviolet imaging telescope on board Aditya-L1 D Tripathi, AN Ramaprakash, S Padinhatteeri, J Sarkar, M Burse, A Tyagi, ... Solar Physics 300 (3), 30 , 2025 2025 Citations: 12
Near and Mid UltraViolet Observations of X-6.3 flare on 22nd February 2024 recorded by the Solar Ultraviolet Imaging Telescope on board Aditya-L1 S Roy, D Tripathi, S Padinhatteeri, AN Ramaprakash, AR Sarwade, ... arXiv preprint arXiv:2502.19795 , 2025 2025
Data processing pipeline of SUIT onboard Aditya-L1 R Gopalakrishnan, VN Nived, D Tripathi, S Padinhatteeri, ... 43rd meeting of the Astronomical Society of India (ASI, 45 , 2025 2025
Science filter characterization of the Solar Ultraviolet Imaging Telescope (SUIT) on board Aditya-L1. J Sarkar, R Deogaonkar, R Kesharwani, S Padinhatteeri, ... Experimental Astronomy 59 (1), 3 , 2025 2025 Citations: 7
Photometric calibration and spectral validation of the Solar Ultraviolet Imaging Telescope onboard Aditya-L1 J Sarkar, S Roy, R AN, R Deogaonkar, S Padinhatteeri, D Tripathi, ... Journal of Astronomical Telescopes, Instruments, and Systems 11 (1), 014005 … , 2025 2025 Citations: 2
A Novel Feature Selection Method for Solar Flare Forecasting AN Shenoy, D Vijayasenan, RS Bobbi, S Padinhatteeri, A HN 2024 IEEE Space, Aerospace and Defence Conference (SPACE), 656-659 , 2024 2024
The Solar Ultra-Violet Imaging Telescope (SUIT) Onboard Intelligence for Flare Observations (vol 298, 16, 2023) M Varma, S Padinhatteeri, S Sinha, A Tyagi, M Burse, R Yadav, G Kumar, ... SOLAR PHYSICS 299 (3) , 2024 2024
Correction to: The Solar Ultra-Violet Imaging Telescope (SUIT) Onboard Intelligence for Flare Observations M Varma, S Padinhatteeri, S Sinha, A Tyagi, M Burse, R Yadav, G Kumar, ... Solar Physics 299 (3), 32 , 2024 2024
High Spectral Resolution Observations of Solar Flares using XSM on Chandrayaan-2 SS Shenoy, S Padinhatteeri, S Narendranath 42nd meeting of the Astronomical Society of India (ASI) 42, P234 , 2024 2024
Study of Solar Atmospheric Heating due to Non-Flaring Active Region MM Munjiba, P Singh, HN Adithya, S Padinhatteeri, PS Athiray 42nd meeting of the Astronomical Society of India (ASI) 42, P235 , 2024 2024 Citations: 1
In-Lab Photometric Calibration of the SUIT Payload on-board Aditya L1 J Sarkar, S Roy, R Deogaonkar, AN Ramaprakash, D Tripathi, ... 42nd meeting of the Astronomical Society of India (ASI) 42, P12 , 2024 2024
The Solar Ultra-Violet Imaging Telescope (SUIT) Onboard Intelligence for Flare Observations M Varma, S Padinhatteeri, S Sinha, A Tyagi, M Burse, R Yadav, G Kumar, ... Solar Physics 298 (2), 16 , 2023 2023 Citations: 6
The Solar Ultraviolet Imaging Telescope: detector characterization and readout electronics testing SVM Varma, A Tyagi, B Joshi, R Yadav, P Chordia, G Kumar, S Sinha, ... RAS Techniques and Instruments 2 (1), 256-263 , 2023 2023 Citations: 3
Solar Ultraviolet Imaging Telescope (SUIT) forward modeling S Roy, LS Anusha, V Witzke, D Tripathi, S Padinhatteri, AN Ramprakash, ... AGU Fall Meeting Abstracts 2022, SH23A-07 , 2022 2022
MOST CITED SCHOLAR PUBLICATIONS
Automatic Detection of Magnetic in Sunspot Groups S Padinhatteeri, PA Higgins, D Shaun Bloomfield, PT Gallagher Solar Physics 291 (1), 41-53 , 2016 2016 Citations: 14
The solar ultraviolet imaging telescope on board Aditya-L1 D Tripathi, AN Ramaprakash, S Padinhatteeri, J Sarkar, M Burse, A Tyagi, ... Solar Physics 300 (3), 30 , 2025 2025 Citations: 12
Science filter characterization of the Solar Ultraviolet Imaging Telescope (SUIT) on board Aditya-L1. J Sarkar, R Deogaonkar, R Kesharwani, S Padinhatteeri, ... Experimental Astronomy 59 (1), 3 , 2025 2025 Citations: 7
The Solar Ultra-Violet Imaging Telescope (SUIT) Onboard Intelligence for Flare Observations M Varma, S Padinhatteeri, S Sinha, A Tyagi, M Burse, R Yadav, G Kumar, ... Solar Physics 298 (2), 16 , 2023 2023 Citations: 6
Seeing-Induced Errors in Solar Doppler Velocity Measurements S Padinhatteeri, R Sridharan, K Sankarasubramanian Solar Physics 266 (1), 195-207 , 2010 2010 Citations: 5
The thermal filter for the Solar Ultraviolet Imaging Telescope (SUIT) on-board Aditya-L1 A Ghosh, R Kesharwani, AR Khan, S Padinhatteeri, D Tripathi, ... Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray 12181 … , 2022 2022 Citations: 4
The Solar Ultraviolet Imaging Telescope: detector characterization and readout electronics testing SVM Varma, A Tyagi, B Joshi, R Yadav, P Chordia, G Kumar, S Sinha, ... RAS Techniques and Instruments 2 (1), 256-263 , 2023 2023 Citations: 3
Test and calibration of the Solar Ultraviolet Imaging Telescope (SUIT) on board Aditya-L1 J Sarkar, VN Nived, S Roy, R Deogaonkar, S Padinhatteeri, AR Bayanna, ... Solar Physics 300 (5), 60 , 2025 2025 Citations: 2
Photometric calibration and spectral validation of the Solar Ultraviolet Imaging Telescope onboard Aditya-L1 J Sarkar, S Roy, R AN, R Deogaonkar, S Padinhatteeri, D Tripathi, ... Journal of Astronomical Telescopes, Instruments, and Systems 11 (1), 014005 … , 2025 2025 Citations: 2
Design, fabrication, and characterization of the thermal filter assembly on the Solar Ultraviolet Imaging Telescope onboard Aditya-L1 J Sarkar, A Ghosh, S Padinhatteeri, R Kesharwani, R AN, D Tripathi, ... Journal of Astronomical Telescopes, Instruments, and Systems 11 (3), 034004 … , 2025 2025 Citations: 1
Near-and mid-ultraviolet observations of X-6.3 flare on 2024 February 22 recorded by the Solar Ultraviolet Imaging Telescope on board Aditya-L1 S Roy, D Tripathi, S Padinhatteeri, AN Ramaprakash, AR Sarwade, N VN, ... The Astrophysical Journal Letters 981 (1), L19 , 2025 2025 Citations: 1
Study of Solar Atmospheric Heating due to Non-Flaring Active Region MM Munjiba, P Singh, HN Adithya, S Padinhatteeri, PS Athiray 42nd meeting of the Astronomical Society of India (ASI) 42, P235 , 2024 2024 Citations: 1
Unraveling the Secrets of the lower Solar Atmosphere: One year of Operation of the Solar Ultraviolet Imaging Telescope (SUIT) on board Aditya-L1 R Gopalakrishnan, S Roy, D Kathait, J Sarkar, D Tripathi, ... arXiv preprint arXiv:2508.08801 , 2025 2025
X-class Flare on 2023 December 31 Observed by the Solar Ultraviolet Imaging Telescope on Board Aditya-L1 S Roy, D Tripathi, V Upendran, S Padinhatteeri, AN Ramaprakash, N VN, ... The Astrophysical Journal Letters 983 (1), L6 , 2025 2025
X-class flare on Dec 31, 2023, observed by the Solar Ultraviolet Imaging Telescope on board Aditya-L1 S Roy, D Tripathi, V Upendran, S Padinhatteeri, AN Ramaprakash, ... arXiv preprint arXiv:2504.04793 , 2025 2025
Near and Mid UltraViolet Observations of X-6.3 flare on 22nd February 2024 recorded by the Solar Ultraviolet Imaging Telescope on board Aditya-L1 S Roy, D Tripathi, S Padinhatteeri, AN Ramaprakash, AR Sarwade, ... arXiv preprint arXiv:2502.19795 , 2025 2025
Data processing pipeline of SUIT onboard Aditya-L1 R Gopalakrishnan, VN Nived, D Tripathi, S Padinhatteeri, ... 43rd meeting of the Astronomical Society of India (ASI, 45 , 2025 2025
A Novel Feature Selection Method for Solar Flare Forecasting AN Shenoy, D Vijayasenan, RS Bobbi, S Padinhatteeri, A HN 2024 IEEE Space, Aerospace and Defence Conference (SPACE), 656-659 , 2024 2024
The Solar Ultra-Violet Imaging Telescope (SUIT) Onboard Intelligence for Flare Observations (vol 298, 16, 2023) M Varma, S Padinhatteeri, S Sinha, A Tyagi, M Burse, R Yadav, G Kumar, ... SOLAR PHYSICS 299 (3) , 2024 2024
Correction to: The Solar Ultra-Violet Imaging Telescope (SUIT) Onboard Intelligence for Flare Observations M Varma, S Padinhatteeri, S Sinha, A Tyagi, M Burse, R Yadav, G Kumar, ... Solar Physics 299 (3), 32 , 2024 2024
