• 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 ...
• Inflationary magnetogenesis beyond slow-roll and its induced gravitational waves 

  Atkins, Bill; Chowdhury, Debika; Marriott-Best, Alisha; Tasinato, Gianmassimo (American Physical Society, 2025-09-15)

  The origin of magnetic fields observed on both astrophysical and cosmological scales is a compelling problem that has the potential to shed light on the early Universe. We analytically investigate inflationary magnetogenesis ...
• Predicting CME speed at 20R⊙ using machine learning approaches 

  Hegde, M (Springer Nature, 2025-09)

  Coronal mass ejections (CMEs) are significant drivers of space weather, and accurately predicting their propagation speed is crucial for mitigating their impact on Earth’s environment. In this study, we leverage machine ...
• SN 2023vbg: a type IIn supernova resembling sn 2009ip, with a long-duration precursor and early-time bump 

  Goto, Sota; Yamanaka, Masayuki; Nagayama, Takahiro; Maeda, K; Kawabata, Miho; Sahu, D. K; Singh, A; Gangopadhyay, A; Dukiya, Naveen; Misra, Kuntal; Dubey, Monalisa; Ailawadhi, Bhavya (American Astronomical Society, 2025-09-10)

  Type IIn supernovae (SNe) resembling SN 2009ip (09ip-like SNe) originate from the interaction between circumstellar material (CSM) and the ejecta. This subclass not only shares similar observational properties around the ...
• Transient LoBALs at high velocities: A case of extreme broad absorption line variability in J115636.82+085628.9 

  Aromal, P; Srianand, R; Gallagher, S. C; Vivek, M; Petitjean, P (American Astronomical Society, 2025-09-10)

  We present a multiepoch spectroscopic study of the broad absorption line (BAL) quasar J115636.82+085628.9 (zem = 2.1077), based on five spectra spanning nearly two decades in the observer’s frame. This source exhibits ...
• B-fields and dust in interstellar filaments using dust polarization (BALLAD-POL). IV.Grain alignment mechanisms in the cocoon nebula (IC 5146) using polarization observations from JCMT/POL-2 

  Pravash, Saikhom; Hoang, Thiem; Archana Soam; Chung, Eun Jung; Diep, Pham Ngoc; Ngoc, Nguyen Bich; Tram, Le Ngoc (American Astronomical Society, 2025-09-01)

  The polarization of starlight and thermal dust emission from aligned nonspherical grains provides a powerful tool for tracing magnetic field morphologies and strengths in the diffuse interstellar medium to star-forming ...
• Li enrichment in Red Clump Giants: Clues for past binary interaction or merger events 

  Singh, Raghubar; Reddy, B. E; Mallick, Anohita; Zhao, Gang (American Astronomical Society, 2025-09-01)

  To understand the underlying mechanisms of high Li abundances among core He-burning or red clump (RC) giants, we analyzed a sample of 5227 RC giants of mass M < 2 M⊙ using spectra and asteroseismic data. We found 120 RC ...
• Redshift ∼2.7 is not special comment on the Kolmogorov analysis of JWST deep survey galaxies 

  Joseph, P (EDP Sciences, 2025-09)

  Galikyan et al. (2025, A&A, 696, L21) reported a statistically significant change in galaxy spectral properties at redshift z ' 2.7 based on a Kolmogorov Stochasticity Parameter analysis of JWST spectroscopic data of ...
• Indian solar and heliospheric physics vision: Fundamental science to a space weather resilient society 

  Nandy, D; Pant, V; Anand, Megha; Athalathil, Jithu J; Awasthi, Arun Kumar; Bane, Kshitij; Banerjee, D; Ravindra, B; Bhaskar, Ankush; Bhattacharyya, R; Bhowmik, Prantika; Chandra, Ramesh; Chatterjee, Piyali; Chatterjee, Subhamoy; Dimri, A. P; Gokani, Sneha A; Hanasoge, S. M; Hazra, S; Jain, Rajmal; Joshi, B; Nagaraju, K; Kansabanik, Devojyoti; Karak, B. B; Kathiravan, C; Khan, Raveena; Krishnan, Hariharan; Kumar, Brajesh; Kumar, Sanjay; Kumari, Anshu; Majumdar, Satabdwa; Mayank, Prateek; Mishra, Sudheer K; Mishra, Wageesh; Mohan, Atul; Mondal, Surajit; Mugundhan, V; Narendranath, S; Oberoi, Divya; Pandya, Megha; Patel, Ritesh; Paul, Arghyadeep; Prasad, A; Sasikumar Raja, K; Rajhans, Abhishek; Ramesh, R; Saha, Chitradeep; Sankarasubramanian, K; Selvakumaran, R; Sharma, Rahul; Sharma, Rohit; Shrivastav, Arpit Kumar; Singh, Nishant; Soni, Shirsh Lata; Srivastava, Abhishek K; Srivastava, Nandita; Tripathi, Durgesh; Uddin, W; Vaidya, Bhargav; Vemareddy, P; Vichare, Geeta; Vigeesh, G; Yadav, Nitin; Yadav, V. K (Springer Nature, 2025-12)

  The Sun is the only star that harbours a planet known to host life. Our home, the Earth, and other solar system planets reside within the heliosphere – the sphere of influence of the Sun. Within this domain, the Sun’s ...
• Short and intermediate periodicities in Ca II K plage areas as seen in Kodaikanal images for individual cycles from 14 to 22 

  Chowdhury, Partha; Priyal, M; Singh, J; Ravindra, B (Springer Nature, 2025-09)

  We analyze historical Ca II K images from the Kodaikanal Observatory (KO) spanning 1907 to 1996, encompassing Solar Cycles 14 through 22. These digitized images were processed using the Equal Contrast Technique (ECT) to ...
• X-ray selected broad absorption line quasars in SDSS-V: BALs and non-BALs span the same range of X-ray properties 

  Hiremath, Pranavi; Rankine, Amy L; Aird, James; Brandt, W. N; Hidalgo, Paola Rodriguez; Anderson, S. F; Aydar, Catarina; Ricci, Claudio; Schneider, D. P; Vivek, M; Igo, Zsofi; Morrison, Sean; Salvato, Mara (Oxford University Press on behalf of Royal Astronomical Society, 2025-09)

  Broad absorption line (BAL) quasars are often considered X-ray weak relative to their optical/UV luminosity, whether intrinsically (i.e. the coronal emission is fainter) or due to large column densities of absorbing material. ...
• Digital micromirror device characterization in optical band for astronomical multi-object spectrograph 

  Sriram, S; Valsan, Vineeth; Remya, B. S; Subramaniam, A; Maheswar, G (Springer Nature, 2025-10)

  The Digital Micromirror Device (DMD), a micro-electro-mechanical system (MEMS) consisting of individually controllable micromirrors, has emerged as a versatile tool for astronomical instrumentation, particularly in ...
• Which solar latitude follows the sunspot cycle exactly? 

  Raju, K. P (American Astronomical Society, 2025-09-20)

  The large-scale convection in the Sun known as supergranulation is manifested as a network structure on the solar surface. The network cells have an average lifetime of 24 hr, a size of about 30 Mm, and a lane width of ...
• The detection of teraelectronvolt radiation from a flat-spectrum radio quasar 

  Paliya, Vaidehi S; Bottcher, M; Wani, Kiran; Naseef Mohammed, P. N; Stalin, C. S; Sahayanathan, S; Saikia, D. J; Muneer, S (American Astronomical Society, 2025-09-20)

  The very high-energy (VHE; >100 GeV) radiation carries the signatures of the matter–energy interaction in some of the most extreme astrophysical environments. Considering broad emission line blazars, i.e., flat-spectrum ...
• Detection of young massive white dwarfs in core-collapsed globular cluster NGC 362 

  Yadav, R. K. S; Dattatrey, Arvind K; Subramaniam, A; Rangwal, Geeta; Singh, Ravi S (American Astronomical Society, 2025-09-10)

  Core-collapsed globular clusters are ideal targets to explore the presence of stellar collision products. Here, we have studied 17 far-UV bright white dwarf (WD) members in the globular cluster NGC 362 using data obtained ...
• Design and fabrication of a lightweight three-lens corrector system for the 2.34-m Vainu Bappu Telescope 

  Singh, Nitish; Sriram, S; Sethuram, Ramya; Yerra, Bharat Kumar; Burman, Rahuldeb; Nataraj, G; Chethan, C; Kemkar, P. M. M; Sagayanathan, K; Das, Saikat; Francis Xavier Rozario, J (Springer Nature, 2025-08)

  The Vainu Bappu Telescope (VBT) is a 2.34-m reflector, primarily supported on-axis field of view, offering high-resolution and low-to-medium resolution spectroscopic observations in its prime and Cassegrain configurations. ...
• Current status and prospects of cosmology research in India 

  Datta, Abhirup; Choudhury, T. R; Majumdar, Suman; More, Surhud; Mukherjee, Suvodip; Souradeep, Tarun; Das, Subinoy; Adhikari, Susmita; Banerjee, Arka; Nadkarni-Ghosh, Sharvari; Jain, R. K; Khandai, Nishikanta; Murmu, Chandra Shekhar; Tripathi, Anshuman (Springer Nature, 2025-12)

  Discoveries in cosmology over the last few decades, using multi-band electromagnetic (EM) observations from radio to gamma rays, have shaped our understanding of the Universe and opened a plethora of open questions. The ...
• Supermassive black holes and active galactic nuclei 

  Devangan, G. C; Shukla, A; Chatterjee, Ritaban; Kharb, P; Stalin, C. S; Mukherjee, Dipanjan; Joshi, Ravi; Paliya, Vaidehi S; Vivek, M; Vaidya, Bhargav; Ghosal, Bitan; Krishnan, Saikruba; Pahari, Mayukh; Hota, A; Banerjee, Biswajit; Agarwal, Sushmita (Springer Nature, 2025-12)

  Indian scientists have made significant contributions to the study of supermassive black holes (SMBH) and active galactic nuclei (AGN) through observational efforts, advanced data analysis, and theoretical modelling and ...
• Orbits and vertical height distribution of 4006 open clusters in the galactic disk using Gaia DR3 

  Rangwal, Geeta; Arya, Aman; Subramaniam, A; Singh, K. P; Liu, Xiaowei (Springer Nature, 2025-12)

  Open clusters (OCs) in the Galaxy are excellent probes for tracing the structure and evolution of the Galactic disk. We present an updated catalog of the fundamental and kinematic parameters for 1145 OCs, estimated using ...
• Stromgren photometric metallicity map of the magellanic cloud stars using Gaia DR3–XP spectra 

  Omkumar, Abinaya O; Cioni, Maria-Rosa L; Subramanian, S; de Bruijne, Jos; Nair, Aparna; Dias, Bruno (EDP Sciences, 2025-08)

  Context. One key to understanding a galaxy’s evolution is studying the consequences of its past dynamical interactions that have influenced its shape. By measuring the metallicity distribution of stellar populations with ...

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