IIAP Publications: Recent submissions

  • Spectroscopic observations of temporal changes in the 5303 Å solar coronal emission line during a flare 
    Ramesh, R; Priyal, M; Singh, J; Sasikumar Raja, K (Springer Nature, 2025-11)
    We report long duration observations of changes in the 5303 Å (Fe XIV) solar coronal emission line parameters at heliocentric distance r≈1.07R⊙, using data obtained with the Visible Line Emission Coronagraph (VELC) onboard ...
  • Unveiling dynamics and variability in open clusters: Insights from a comprehensive analysis of six galactic clusters 
    Belwal, Kuldeep; Bisht, D; Jiang, Ing-Guey; Yadav, R. K. S; Raj, A; Rangwal, Geeta; Dattatrey, Arvind K; Bisht, Mohit Singh; Durgapal, Alok (Oxford University Press on behalf of Royal Astronomical Society, 2025-11)
    We present a kinematic and dynamical analysis of six Galactic open clusters – NGC 2204, NGC 2660, NGC 2262, Czernik 32, Pismis 18, and NGC 2437, using Gaia DR3. We used Bayesian and Gaussian Mixture Model (GMM) methods to ...
  • JWST observations of sn 2023ixf. II. The panchromatic evolution between 250 and 720 days after the explosion 
    Medler, K; Ashall, C; Hoeflich, P; Baron, E; DerKacy, J. M; Shahbandeh, M; Mera, T; Pfeffer, C. M; Hoogendam, W. B; Jones, D. O; Shiber, S; Fereidouni, E; Fox, O. D; Jencson, J; Galbany, L; Hinkle, J. T; Tucker, M. A; Shappee, B. J; Huber, M. E; Auchettl, K; Angus, C. R; Desai, D. D; Do, A; Payne, A. V; Shi, J; Kong, M. Y; Romagnoli, S; Syncatto, A; Burns, C. R; Clayton, G; Dulude, M; Engesser, M; Filippenko, A. V; Gomez, S; Hsiao, E. Y; de Jaeger, T; Johansson, J; Krisciunas, K; Kumar, S; Lu, J; Matsuura, M; Mazzali, P. A; Milisavljevic, D; Morrell, N; O'Steen, R; Park, S; Phillips, M. M; Ravi, A. P; Rest, A; Rho, J; Suntzeff, N. B; Sarangi, Arkaprabha; Smith, N; Stritzinger, M. D; Strolger, L; Szalai, T; Temim, T; Tinyanont, S; Van Dyk, S. D; Wang, L; Wang, Q; Wesson, R; Yang, Y; Zsíros, S (American Astronomical Society, 2025-11-10)
    We present the nebular phase spectroscopic and photometric observations of the nearby hydrogen-rich core-collapse supernova (CCSN) SN 2023ixf, obtained through our JWST programs. These observations, combined with ground-based ...
  • Euclid: Early release observations of ram-pressure stripping in the perseus cluster detection of parsec-scale star formation within the low surface brightness stripped tails of UGC 2665 and MCG +07-07-070 
    George, K; Boselli, A; Cuillandre, J. C; Kuemmel, M; Lancon, A; Bellhouse, C; Saifollahi, T; Mondelin, Maelie; Bolzonella, Micol; Joseph, P; Roberts, I. D; Balestra, A; Maiorano, E; Bardelli, S; Battaglia, P; Biviano, Andrea; Bonino, D; Branchini, E; Brescia, M; Brinchmann, J; Camera, S; Medinaceli, E; Canas-Herrera, G; Capobianco, V; Mansutti, O; Carbone, C; Carretero, J; Casas, S; Castellano, M; Castignani, G; Cavuoti, S; Chambers, K. C; van Weeren, R. J; Cimatti, A; Colodro-Conde, C; Congedo, G; Marggraf, O; Conselice, Christopher J; Conversi, L; Copin, Y; Courbin, F; Courtois, H. M; Cropper, M; Mei, S; Da Silva, A; Degaudenzi, H; De Lucia, G; Di Giorgio, A. M; Markovic, K; Dole, H; Douspis, M; Dubath, F; Dupac, X; Dusini, S; Mellier, Y; Escoffier, Stephanie; Farina, M; Faustini, F; Ferriol, S; Fotopoulou, S; Martinelli, M; Frailis, M; Franceschi, E; Galeotta, S; Gillis, B; Meneghetti, M; Giocoli, C; Gracia-Carpio, K; Grazian, A; Grupp, F; Haugan, S. V. H; Holmes, W; Martinet, N; Hook, I. M; Hormuth, F; Hornstrup, A; Merlin, E; Hudelot, P; Jahnke, K; Jhabvala, M; Keihanen, E; Kermiche, S; Kiessling, A; Kubik, B; Marulli, F; Kunz, M; Kurki-Suonio, H; Meylan, G; Le Brun, A. M. C; Le Mignant, D; Ligori, S; Lilje, P. B; Lindholm, V; Lloro, I; Mainetti, G; Maino, D; Massey, R; Maurogordato, S; Mohr, J. J; Mora, A; Moresco, M; Sorce, J. G; Moscardini, L; Nakajima, R; Liu, Q; Neissner, C; Nichol, R. C; Niemi, S. M; Nightingale, J. W; Padilla, C; Paltani, S; Pasian, F; Poulain, M; Pedersen, K; Percival, W. J; Pettorino, V; Sola, E; Pires, S; Polenta, G; Poncet, M; Popa, L. A; Pozzetti, L; Raison, F; Aghanim, N; Rebolo, R; Renzi, A; Rhodes, J; Riccio, G; Urbano, M; Romelli, E; Roncarelli, M; Rossetti, E; Saglia, R; Sakr, Z; Altieri, B; Sapone, D; Sartoris, B; Schewtschenko, J. A; Schirmer, M; Schneider, P; Baes, M; Secroun, A; Seidel, G; Seiffert, M; Serrano, S; Amara, A; Sirignano, C; Sirri, G; Stanco, L; Steinwagner, J; Tallada-Crespi, P; Taylor, A. N; Peletier, R. F; Tereno, I; Toft, S; Toledo-Moreo, R; Andreon, S; Torradeflot, F; Tutusaus, I; Valentijn, E. A; Valenziano, L; Valiviita, J; Vassallo, T; Verdoes Kleijn, G; Klein, M; Veropalumbo, A; Wang, Y; Auricchio, N; Weller, J; Zamorani, G; Zerbi, F. M; Zucca, E; Burigana, C; Gabarra, L; Martin-Fleitas, J; Scottez, V; Davies, C. T; Zinchenko, I. A; Baccigalupi, C; Baldi, M (EDP Sciences, 2025-09)
    Euclid is delivering optical and near-infrared imaging data over 14 000 deg2 on the sky at spatial resolution and surface brightness levels that can be used to understand the morphological transformation of galaxies within ...
  • Dependence of water vapor radiative forcing on aerosol loading: Analyses over the densely populated and highly polluted Indo-gangetic plain region 
    Dumka, U. C; Kaskaoutis, D. G; Khatri, Pradeep; Shantikumar, N. S; Sotiropoulou, R. E. P; Tagaris, E (Elsevier B.V, 2025-11)
    This study analyzes the aerosol and precipitable water vapor (PWV) properties at six sites in the Indo-Gangetic Plains (IGP), a densely populated and highly polluted region. The main objective is to explore how the ...
  • Role of magnetic shear distribution in the formation of eruptive flux ropes 
    Sen, Samrat; Nayak, Sushree S; Antolin, P (EDP Sciences, 2025-11)
    Context. Erupting flux ropes play a crucial role in powering a wide range of solar transients, including flares, jets, and coronal mass ejections. These events are driven by the release of stored magnetic energy, facilitated ...
  • Isentropic processes for axisymmetric black holes 
    Dubey, Nitesh K; Kolekar, Sanved (American Physical Society, 2025-10-15)
    We demonstrate that the isentropic absorption of a classical charged test particle is classically forbidden for all (3 þ 1)-dimensional stationary, nonextremal, axisymmetric black holes in any diffeomorphism invariant ...
  • Non-linear solar EUV-driven sodium release from the lunar surface: A contrast to the linear PSD model 
    Devaraj, A; Narendranath, S; Kartha, Sreeja S; Sarantos, M; Akhil, Krishna R; Mathew, Blesson; Sivarani, T; Nidhi, S; Anbazhagan, P; Selvakumar, G (Oxford University Press on behalf of Royal Astronomical Society, 2025-10)
    The correlation between solar Extreme Ultra-Violet (EUV) radiation above 8.8 eV and the release of sodium from the lunar surface via photon-stimulated desorption (PSD) is investigated. We use simultaneous measurements of ...
  • Asteroseismology of HD 23734, HD 68703, and HD 73345 using K2–TESS space-based photometry and high-resolution spectroscopy 
    Joshi, S; Dileep, Athul; Semenko, E; Sarkar, M; Trust, Otto; De Cat, P; Lampens, P; Dupret, M. A; Ghosh, S. C; Mkrtichian, David; Vanrespaille, Mathijs; Parida, Sugyan; Yadav, A. P; Pramod Kumar, S; Goswami, P. P; Riyas, Muhammed; Drisya, K (Oxford University Press on behalf of Royal Astronomical Society, 2025-10)
    In this paper, we present a comprehensive study of three stars, HD 23734, HD 68703, and HD 73345, which were previously observed as chemically peculiar candidates within the Nainital-Cape survey and reported as null results ...
  • Investigating the kinematics of molecular gas in cometary globule L1616 
    Porel, Puja; Archana Soam; Karoly, Janik; Chung, Eun Jung; Lee, Chang Won (Oxford University Press on behalf of Royal Astronomical Society, 2025-10)
    LDN 1616 is a cometary globule located approximately 8◦ west of the Orion OB1 associations. The massive OB stars in the Orion belt region act as catalysts, triggering the star formation activity observed in the L1616 region ...
  • Distinct Fe K line complexes in MAXI J1744−294 revealed by XRISM high-resolution spectroscopy 
    Chatterjee, Kaushik; Mondal, Santanu; Palit, Biswaraj; Singh, Chandra B; Nath, Sujoy Kumar; Pahari, Mayukh; Kumar, Brajesh; Wang, W; Chang, Hsiang-Kuang; Liu, Xiaowei (American Astronomical Society, 2025-10-20)
    The newly discovered Galactic transient MAXI J1744−294 went into its first X-ray outburst in 2025. We study the spectral properties of this source in the 2–10 keV energy band during this outburst using X-ray data from the ...
  • Does DESI DR2 challenge ΛCDM paradigm? 
    Chaudhary, Himanshu; Capozziello, Salvatore; Sharma, Vipin Kumar; Mustafa, Ghulam (American Astronomical Society, 2025-10-20)
    Although the debate about the systematic errors of DESI DR1 is still open, recent DESI DR2 is consistent with DESI DR1 and further strengthens the results of DESI DR1. In our analysis, both the LRG1 point at zeff = 0.510 ...
  • Evolution of low surface brightness ultrathin galaxies: The role of dark matter halo and bar formation on disk thickness 
    Aditya, K; Banerjee, Arunima (American Astronomical Society, 2025-10-20)
    We investigate how stellar disks sustain their ultrathin structure throughout their evolution. We follow the evolution of ultrathin stellar disks with varying dark matter (DM) halo concentration (c) using collisionless ...
  • The effect of poloidal magnetic field and helicity injection in a breakout coronal mass ejection 
    Vashishtha, Nitin; Pant, V; Talpeanu, Dana-Camelia; Banerjee, D; Rastogi, Shantanu (American Astronomical Society, 2025-10-10)
    Coronal mass ejections (CMEs), as crucial drivers of space weather, necessitate a comprehensive understanding of their initiation and evolution in the solar corona in order to better predict their propagation. Solar Cycle ...
  • The 2021 hot-type symbiotic outburst of YY herculis: An optical follow-up study 
    Sonith, L. S; Kamath, U. S (American Astronomical Society, 2025-10-01)
    We have followed up on the hot-type classical symbiotic outburst reported in YY Her using the Himalayan Chandra Telescope. The outburst coincides with the secondary minima of the system. Approximately 12 similar brightening ...
  • Challenging classical paradigms: Recurrent nova M31N 2017-01e, a BeWD system in M31? 
    Chamoli, Shatakshi; Basu, Judhajeet; Barway, Sudhanshu; Anupama, G. C; Swain, Vishwajeet; Bhalerao, Varun (American Astronomical Society, 2025-10-01)
    M31N 2017-01e is the second-fastest recurrent nova known, with a recurrence period of 2.5 yr in the Andromeda galaxy (M31). This system exhibits a unique combination of properties: a low outburst amplitude (∼3 mag), starkly ...
  • When the wall fell: Study of polycyclic aromatic hydrocarbons in T chamaeleontis using JWST 
    Arun, R (American Astronomical Society, 2025-10)
    We investigate the polycyclic aromatic hydrocarbon (PAH) emission features of T Cha, a G8-type T Tauri star that has exhibited “seesaw”-type mid-infrared continuum variability over nearly two decades due to the destruction ...
  • A tale of three cataclysmic variables with distinct superhumps 
    Joshi, Arti; Tappert, C; Catelan, Marcio; Schmidtobreick, L; Singh, Mridweeka (EDP Sciences, 2025-10)
    Superhumps are among the most commonly observed variable features in the light curves of cataclysmic variables (CVs). To study the superhump behaviour of CVs, we present Transiting Exoplanet Survey Satellite (TESS) ...
  • Long-term monitoring of a dynamically new comet C/2020 V2 (ZTF) 
    Ahuja, Goldy; Aravind, K; Ganesh, S; Hmiddouch, Said; Donckt, Mathieu Vander; Jehin, E; Sahu, D. K; Sivarani, T (Oxford University Press on behalf of Royal Astronomical Society, 2025-10)
    Comet C/2020 V2 (ZTF, Zwicky Transient Facility) is categorized as a dynamically new long-period comet, making its first approach to the inner Solar system. We have observed this comet for around 32 months (from 2022 January ...
  • Polycyclic Aromatic Hydrocarbons in the circumstellar medium of Herbig Ae/Be stars 
    Arun, R; Mathew, Blesson; Shridharan, B; Ujjwal, K; Akhil, Krishna R; Maheswar, G; Kartha, Sreeja S (IOP Publishing, 2025-09)
    We present a comprehensive mid-infrared spectroscopic survey of 124 Herbig Ae/Be stars using newly processed Spitzer/IRS spectra from the newly released CASSISjuice database. Based on prominent dust and molecular signatures ...

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