• On the magnetic reconnection and its properties during a flare using a magnetohydrodynamics simulation 

  Nayak, Sushree S; Hu, Qiang; He, Wen; Kumar, Sanjay; Bhattacharyya, R (Springer Nature, 2025-06)

  We study the magnetic reconnection during a flare by investigating flare ribbon dynamics using observations and data-constrained magnetohydrodynamics (MHD) simulation. In particular, we estimate the reconnection flux and ...
• Large cold dust reservoir revealed in transitional SN Ib 2014C by James Webb Space Telescope mid-infrared spectroscopy 

  Tinyanont, S; Fox, O. D; Shahbandeh, M; Temim, Tea; Williams, Robert; Wangnok, Kittipong; Rest, Armin; Lau, Ryan M; Maeda, K; Jencson, Jacob E; Auchettl, Katie; Filippenko, A. V; Larison, Conor; Ashall, Chris; Brink, Thomas G; Davis, Kyle W; Dessart, Luc; Foley, Ryan J; Galbany, L; Grayling, Matthew; Johansson, J; Kasliwal, Mansi M; Lane, Zachary G; LeBaron, Natalie; Milisavljevic, D; Rho, Jeonghee; Sakon, I; Sarangi, Arkaprabha; Szalai, Tamas; Taggart, Kirsty; Van Dyk, S. D; Wang, Qinan; Yang, Yi; Zheng, W; Zsiros, Szanna (American Astronomical Society, 2025-06-01)

  Supernova (SN) 2014C is a rare transitional event that exploded as a hydrogen-poor, helium-rich Type Ib SN and subsequently interacted with a hydrogen-rich circumstellar medium (CSM) a few months postexplosion. This unique ...
• Doppler shifted transient sodium detection by KECK/HIRES 

  Unni, Athira; Oza, Apurva V; Hoeijmakers, H. Jens; Seidel, Julia V; Sivarani, T; Schmidt, Carl A; Kesseli, Aurora Y; Kleer, Katherine de; Baker, Ashley D; Gebek, Andrea; Westram, Moritz Meyer zu; Fisher, Chloe; Sallum, Steph; Manjunath, B; Bello-Arufe, Aaron (Oxford University Press on behalf of Royal Astronomical Society, 2025-06)

  We carried out the first high-resolution transit observations of the exoplanet WASP-49 Ab with Keck/HIRES. Upon custom wavelength calibration we achieve a Doppler RV precision of < 60 ms−1 . This is an improvement in ...
• Computations of eclipses from 14th-century manuscript Ekanathakarana 

  Shylaja, B. S; Shubha, B. S (Springer Nature, 2025-06)

  The procedures followed for computations of eclipses in the classical treatises are best understood with a practical demonstration of the technique. Here, we have studied manuscripts describing the computations. These are ...
• New age observing facilities for Indian astronomy: 2020–2035 

  Ramya, S; Roy, Jayanta; Reddy, Eswar; Anupama, G. C; Banyal, R. K; Bhalerao, Varun; Bhattacharyya, Subir; Buch, Kaushal Dipak; Eswaraiah, Chakali; Chitnis, V. R; Datta, Abhirup; Godambe, Sagar; Maheswar, G; Kale, Ruta; Lal, D. V; Mallick, K. K; Majumdar, P; Mitra, Sanjit; Oberoi, Divya; Mohanty, Pravata; Mookerjea, B; Ojha, D. K; Dewangan, Lokesh; Jose, J; Ninan, J. P; Rao, Mayuri Sathyanarayana; Pahari, Mayukh; Naik, Sachindra; Jain, Pankaj; Prabhu, T. P; Ramaprakash, A. N; Rana, Vikram; Ramesh, R; Ravindra, B; Sankarasubramanian, K; Ramadevi, M. C; Narendranath, S; Archana Soam; Vadawale, S. V; Vadamattom, Veena; Girish, V; Yadav, K. K; Singh, Krishna Kumar; Mankuzhiyil, Nijil; Bharat Kumar, Y; Arun Babu, K. P (Springer Nature, 2025-06)

  In this article, we present the current state of observing facilities available for Indian astronomers in various wavelength bands existing in the country. We also mention a few state-of-the-art astronomical facilities ...
• The JCMT BISTRO-3 survey: Variation of magnetic field orientations on parsec and subparsec scales in the massive star-forming region G28.34+0.06 

  Hwang, Jihye; Pattle, Kate; Lee, Chang Won; Karoly, Janik; Kim, Kee-Tae; Kim, Jongsoo; Liu, Junhao; Qiu, Keping; Lyo, A-Ran; Eden, David; Koch, Patrick M; Arzoumanian, Doris; Sharma, Ekta; Poidevin, Frederick; Johnstone, Doug; Coude, Simon; Tahani, Mehrnoosh; Ward-Thompson, Derek; Archana Soam; Kang, Ji-hyun; Hoang, Thiem; Kwon, Woojin; Ngoc, Nguyen Bich; Chung, Eun Jung; Bourke, Tyler L; Onaka, Takashi; Kirchschlager, Florian; Tamura, Motohide; Kwon, Jungmi; Tang, Xindi; Eswaraiah, Chakali; Liu, Tie; Bastien, Pierre; Furuya, Ray S; Lai, Shih-Ping; Lin, Sheng-Jun; Wang, Jia-Wei; Berry, David (American Astronomical Society, 2025-06-01)

  Magnetic fields play a significant role in star-forming processes on core to clump scales. We investigate magnetic field orientations and strengths in the massive star-forming clump P2 within the filamentary infrared dark ...
• Galaxies, clusters, and intergalactic medium: A vision document for the Indian Astronomical Community 

  Kale, Ruta; Muzahid, Sowgat; Khaire, V; Roy, Namrata; Das, Sanskriti; Chand, H; Chatterjee, Suchetana; Datta, Abhirup; Mousumi Das; Hota, A; Jog, C. J; Kartha, Sreeja S; Lal, D. V; Mondal, Chayan; Nath, B. B; Choudhury, Prakriti Pal; Paul, Surajit; Sachdeva, Sonali; Sharma, Prateek; Singh, Priyanka; Singh, V; Subramanian, S; Sur, Sharanya (Springer Nature, 2025-12)

  Galaxies, clusters, and the intergalactic medium (IGM) are the essential and interconnected components of the cosmic ecosystem. Galaxies, with their diverse morphologies and stellar populations, are the building blocks of ...
• Coupling of Alfven and magnetosonic waves in rotating hall magnetoplasmas 

  Misra, Amar P; Dey, Rupak; Krishan, V (American Institute of Physics, 2025-06)

  We study the linear theory of magnetohydrodynamic (MHD) waves, namely, the Alfvén and the fast and slow magnetosonic modes in a rotating Hall-MHD plasma with the effects of the obliqueness of the external magnetic field ...
• Evolution of the interacting coronal mass ejections that drove the great geomagnetic storm of 10 May 2024 

  Khuntia, Soumyaranjan; Mishra, Wageesh; Agarwal, Anjali (EDP Sciences, 2025-05)

  Context. The arrival of a series of coronal mass ejections (CMEs) at the Earth resulted in a great geomagnetic storm on 10 May 2024, the strongest storm in the last two decades. Aims. We investigated the kinematic and ...
• Discovery of a kinematically distinct component in the central region of the collisional ring galaxy AM0644-741 

  Mondal, Chayan; Barway, Sudhanshu (EDP Sciences, 2025-05)

  We present the discovery of a peculiar central stellar structure in the collisional ring galaxy AM0644-741 using HST imaging and MUSE integral field unit (IFU) data. We identified two Sérsic components with a Sérsic index ...
• Exploring cosmological gravitational wave backgrounds through the synergy of LISA and the Einstein Telescope 

  Marriott-Best, Alisha; Chowdhury, Debika; Ghoshal, Anish; Tasinato, Gianmassimo (American Physical Society, 2025-05-15)

  The gravitational wave (GW) interferometers Laser Interferometer Space Antenna (LISA) and the Einstein Telescope (ET) are expected to be functional in the next decade(s), possibly around the same time. They will operate ...
• Analysis of forbidden neon emission lines in HAeBe stars using Spitzer IRS spectra 

  Akhila, D; Mathew, Blesson; Nidhi, S; Shridharan, B; Arun, R; Anilkumar, Hema; Maheswar, G; Kartha, Sreeja S; Manoj, P; Bhattacharyya, Suman (Oxford University Press on behalf of Royal Astronomical Society, 2025-07)

  We analysed high-resolution mid-infrared spectra of 78 well-known Herbig Ae/Be (HAeBe) stars using Spitzer InfraRedSpectrograph data, focusing on the detection of [Ne II] and [Ne III] emission lines as indicators of ionized ...
• Small-scale dynamic phenomena associated with interacting fan-spine topologies: Quiet-Sun Ellerman bombs, UV brightenings,and chromospheric inverted-Y-shaped jets 

  Bhatnagar, Aditi; Prasad, A; Nobrega-Siverio, Daniel; Rouppe van der Voort, L; Joshi, Jayant (EDP Sciences, 2025-05)

  Context. Quiet-Sun Ellerman bombs (QSEBs) are small-scale magnetic reconnection events in the lower solar atmosphere. Sometimes, they exhibit transition region counterparts, known as ultraviolet (UV) brightenings. Magnetic ...
• Formation of chromospheric fan-shaped jets through magnetic reconnection 

  Bura, Annu; Samanta, T; Prasad, A; Moore, Ronald L; Sterling, Alphonse C; Yurchyshyn, Vasyl; Surya, Arun (American Astronomical Society, 2025-06-01)

  Recurrent chromospheric fan-shaped jets highlight the highly dynamic nature of the solar atmosphere. They have been named as “light walls” or “peacock jets” in high-resolution observations. In this study, we examined the ...
• Modification of Newtonian gravity: Implications for hot gas in clusters and galactic angular momentum 

  Rebecca, Louise; Sebastian, Dominic; Sivaram, C; Arun, K (World Scientific Publishing, 2025-05-30)

  In view of the negative results from various dark matter detection experiments, we had earlier proposed an alternate theoretical framework through modification of Newtonian gravity (MONG). Here, the Poison’s equation is ...
• Warm ionized gas outflows in Active Galactic Nuclei: What causes them? 

  Nandi, Payel; Stalin, C. S; Saikia, D. J (American Astronomical Society, 2025-05-01)

  The driving force behind outflows, often invoked to understand the correlation between the supermassive black holes powering active galactic nuclei (AGN) and their host galaxy properties, remains uncertain. We provide new ...
• The Lyα sky as observed by New Horizons at 57 AU 

  Gladstone, G. Randall; Shull, J. Michael; Pryor, Wayne R; Slavin, Jonathan; Kammer, Joshua A; Becker, Tracy M; Lauer, Tod R; Postman, Marc; Spencer, John R; Parker, Joel Wm; Retherford, Kurt D; Velez, Michael A; Versteeg, Maarten H; Davis, Michael W; Froning, Cynthia S; Ertley, Camden D; Cunningham, Nathaniel; Murthy, J; Henry, Richard C; Redfield, Seth; Lisse, Carey M; Singer, Kelsi N; Verbiscer, Anne J; Brandt, Pontus C; Stern, S. Alan (American Astronomical Society, 2025-05)

  During 2023 September the Alice ultraviolet spectrograph on the New Horizons (NH) spacecraft was used to map diffuse Lyα emission over most of the sky, at a range of ∼56.9 au from the Sun. At that distance, models predict ...
• The long-term optical flux variations of Compact Symmetric Objects 

  Swain, Subhashree; Paliya, Vaidehi S; Saikia, D. J; Stalin, C. S; Venugopal, Arya; Bhavya, A. K; Ravikumar, C. D (Springer Nature, 2025-05)

  Compact Symmetric Objects (CSOs) are a distinct category of jetted active galactic nuclei (AGN) whose optical variability characteristics have not been well investigated. We present here the results of our investigation ...
• Solar cycle variations in meridional flows and rotational shear within the sun's near-surface shear layer 

  Sen, Anisha; Rajaguru, S. P; Iyer, Abhinav G; Chen, Ruizhu; Zhao, Junwei; Kholikov, S (American Astronomical Society, 2025-05-01)

  Using solar cycle–long helioseismic measurements of meridional and zonal flows in the near-surface shear layer (NSSL) of the Sun, we study their spatiotemporal variations and connections to active regions. We find that ...
• Visible Emission Line Coronagraph (VELC) on board Aditya-L1 

  Singh, J; Ramesh, R; Prasad, B. R; Priyal, M; Sasikumar Raja, K; Venkata, S. N; Kamath, P. U; Natarajan, V; Pawan Kumar, S; Sanal Krishnan, V. U; Savarimuthu, P; Mishra, Shalabh; Kumar, Varun; Sumana, Chavali; Hegde, Bhavana; Utkarsha, D; Kumar, Amit; Nagabhushana, S; Kathiravan, S; Vemareddy, P; Kathiravan, C; Nagaraju, K; Ravindra, B; Mishra, Wageesh (Springer Nature, 2025-05)

  Aditya-L1, India’s first dedicated mission to study the Sun and its atmosphere from the Sun-Earth Lagrangian L1 location was successfully launched on September 2, 2023. It carries seven payloads. The Visible Emission Line ...

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