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  • Magnetic fields in the bones of the Milky Way 
    Stephens, Ian W; Coude, Simon; Myers, Philip C; Zucker, Catherine; Jackson, James M; Andersson, B -G; Smith, Rowan; Archana Soam; Sanhueza, Patricio; Hogge, Taylor; Smith, Howard A; Novak, Giles; Sadavoy, Sarah; Pillai, Thushara; Li, Zhi Yun; Looney, Leslie W; Sugitani, Koji; Guzman, Andres E; Goodman, Alyssa; Kusune, Takayoshi; Zhang, Miaomiao; Karnath, Nicole; Marin, Jessy (American Astronomical Society, 2025-12-20)
    Stars primarily form in galactic spiral arms within dense, filamentary molecular clouds. The largest and most elongated of these molecular clouds are referred to as “bones,” which are massive, velocity-coherent filaments ...
  • ZTF25abjmnps (AT2025ulz) and S250818k: A candidate superkilonova from a subthreshold subsolar gravitational-wave trigger 
    Kasliwal, Mansi M; Ahumada, Tomas; Stein, Robert; Karambelkar, Viraj; Hall, Xander J; Avinash Singh; Fremling, Christoffer; Metzger, B. D; Bulla, Mattia; Swain, Vishwajeet; Antier, S; Pillas, Marion; Busmann, Malte; Freeburn, James; Karpov, S; Bochenek, Aleksandra; O’Connor, Brendan; Perley, Daniel A; Akl, Dalya; Anand, Shreya; Toivonen, Andrew; Rose, Sam; Jegou du Laz, Theophile; Liu, Chang; Das, Kaustav K; Chaudhary, Sushant Sharma; Barna, Tyler; Saikia, Aditya Pawan; Andreoni, Igor; Bellm, Eric C; Bhalerao, Varun; Cenko, S. Bradley; Coughlin, Michael W; Gruen, Daniel; Kasen, D; Miller, Adam A; Nissanke, Samaya; Palmese, Antonella; Sollerman, Jesper; Sravan, Niharika; Anupama, G. C; Banerjee, Smaranika; Barway, Sudhanshu; Bloom, Joshua S; Cabrera, Tomas; Chen, Tracy X; Copperwheat, Christopher M; Corsi, Alessandra; Dekany, Richard; Earley, Nicholas; Graham, Matthew J; Hello, Patrice; Helou, George; Hu, Lei; Kini, Yves; Mahabal, Ashish A; Masci, Frank J; Mohan, Tanishk; Pletskova, Natalya; Purdum, Josiah; Qin, Yu-Jing; Rehemtulla, Nabeel; Salgundi, Anirudh; Wang, Yuankun (American Astronomical Society, 2025-12-20)
    On 2025 August 18, the LIGO–Virgo–KAGRA collaboration reported gravitational waves from a subthreshold binary neutron star merger. If astrophysical, this event would have a surprisingly low chirp mass, suggesting that at ...
  • The ALMA-QUARKS survey: Evidence of a candidate high-mass prestellar core aside a bright-rimmed cloud IRAS 18290-0924 
    Yang, Dongting; Liu, Hong-Li; Qin, Sheng-Li; Liu, Tie; Tej, Anandmayee; Zhang, Siju; Liu, Xunchuan; Xu, Feng-Wei; Garay, Guido; Zhu, Lei; Sanhueza, Patricio; Mai, Xiaofeng; Jiao, Wenyu; Goldsmith, Paul F; Dib, S; Garcia, Pablo; Li, Di; He, Jinhua; Yang, A.Y; Gorai, Prasanta; Zhang, Suinan; Zhang, Yankun; Zhou, Jianjun; Juvela, Mika; Chibueze, J. O; Lee, Chang Won; Hwang, Jihye; Bronfman, Leonardo; Tang, Xindi; Archana Soam; Baug, Tapas; Zhang, Yichen; Das, Swagat; Dewangan, Lokesh; Toth, L. Viktor (American Astronomical Society, 2025-12-20)
    Although frequently reported in observations, the definitive confirmation of high-mass prestellar cores has remained elusive, presenting a persistent challenge in star formation studies. Using two-band observational data ...
  • Photon region boundary for stationary axisymmetric black holes 
    Padhye, Prasad; Kajol, P; Kolekar, Sanved (American Physical Society, 2025-12-15)
    The black hole shadow is fundamentally connected to the structure of light rings and the photon region in the background geometry. We investigate the photon region boundary in a generic asymptotically flat, stationary, ...
  • Unbound tails and compressed heads: A JCMT study of the SFO 38 cloud 
    Porel, Puja; Archana Soam; Karoly, Janik; Chung, Eun Jung; Lee, Chang Won; Kim, Shinyoung; Gupta, Shivani; Sharma, Neha (American Astronomical Society, 2025-12-10)
    SFO 38, located in the Cepheus molecular cloud within the northern part of the H II region IC 1396, is shaped by intense ultraviolet (UV) radiation from the nearby O6.5V-type star HD 206267 and represents a classic example ...
  • Spectroscopic reverberation mapping for SARM: The case of Mrk 1048 and Mrk 618 
    Pandey, Shivangi; Rakshit, Suvendu; Muneer, S; Jose, Jincen; Tomar, Ashutosh; Li, Yan-Rong; Wang, Jian-Min; Stalin, C. S; Woo, Jong-Hak; Petrov, R. G; Leftley, James; Honig, Sebastian F; Mandal, A. K; Ubarhande, Tushar; Wang, Shu; Brotherton, Michael; Gupta, Archana (American Astronomical Society, 2025-12-10)
    Robust extragalactic distance measurements are crucial for resolving the persistent discrepancy in the value of the Hubble constant (H0). Active galactic nuclei (AGNs), through their compact and variable broad-line regions, ...
  • Identification of large-scale (>100 kpc) radio jets in narrow-line seyfert 1 galaxies 
    Umayal, S; Paliya, Vaidehi S; Saikia, D. J; Stalin, C. S; Muneer, S; Maheswar, G (American Astronomical Society, 2025-12-10)
    Powerful, large-scale relativistic jets are usually associated with massive, old elliptical galaxies. This paradigm has recently been challenged by the identification of narrow-line Seyfert 1 (NLSy1) galaxies, thought to ...
  • Continued radio observations of the persistent radio source associated with FRB 20190520B provide insights into its origin 
    Balasubramanian, Arvind; Bhardwaj, Mohit; Tendulkar, Shriharsh (American Astronomical Society, 2025-12-10)
    Follow-up studies of persistent emission from fast radio burst (FRB) sources are critical for understanding their elusive emission mechanisms and the nature of their progenitors. This work presents new observations of the ...
  • Survival of the accretion disk in LMC recurrent nova 1968-12a: UV–X-ray case study of the 2024 eruption 
    Basu, Judhajeet; Anupama, G. C; Ness, J.-U; Singh, K. P; Barway, Sudhanshu; Chamoli, Shatakshi (American Astronomical Society, 2025-12-01)
    We report on UV and X-ray observations of the 2024 eruption of the recurrent nova LMCN 1968-12a, a rapidly recurring extragalactic system with a ∼4.3 yr recurrence period and a massive white dwarf. The eruption was discovered ...
  • Classification of global aerosol types and its radiative effects using Aerosol Robotic Network (AERONET) data 
    Mukhopadhyay, Swagata; Shantikumar, N. S; Amoghavarsha, A. V; Madhavan, B. L; Eck, Thomas F; Dumka, U. C; Khatri, Pradeep; Gupta, Pawan (Elsevier B.V., 2025-12-01)
    The present study performed classification global aerosols based on particle linear depolarization ratio (PLDR) and single scattering albedo (SSA) provided from AErosol RObotic NETwork (AERONET) Version 3.0 and Level 2.0 ...
  • Observed Joy’s law of bipolar magnetic region tilts at emergence supports the thin Flux tube model 
    Sreedevi, Anu; Karak, B. B; Jha, Bibhuti K; Gupta, Rambahadur; Banerjee, D (American Astronomical Society, 2025-12-01)
    Bipolar sunspots, or more generally, bipolar magnetic regions (BMRs), are the dynamic magnetic regions that appear on the solar surface and are central to solar activity. One striking feature of these regions is that they ...
  • H I 21 cm absorption associated with foreground galaxies on top of Quasars 
    Guha, Labanya Kumar; Srianand, Raghunathan; Dutta, Rajeshwari (American Astronomical Society, 2025-12-01)
    A systematic search for H I 21 cm absorption in quasar─galaxy pairs (QGPs) provides a powerful means to map the distribution of cold gas around high-redshift star-forming galaxies. Fiber spectroscopy of high-redshift quasars ...
  • Near-sun characteristics of a CME inferred from observations in the 5303 Å coronal emission line 
    Priyal, M; Ramesh, R; Singh, J; Sasikumar Raja, K; Gopalswamy, N (American Astronomical Society, 2025-12-01)
    Using observations of the solar corona in the 5303 Å (Fe XIV) emission line with the Visible Emission Line Coronagraph (VELC) on board Aditya-L1, we estimated the electron density (Ne), thermal energy (ECME), and mass ...
  • Discovery of changing-look behavior in AGN NGC3822: A long-term multiwavelength study 
    Layek, Narendranath; Nandi, Prantik; Naik, Sachindra; Chhotaray, Birendra; Jana, Arghajit; Dash, Priyadarshee P; Neeraj, Kumari; Stalin, C. S; Bandari, Srikanth; Muneer, S (American Astronomical Society, 2025-12-01)
    We present a comprehensive long-term multiwavelength study of the active galactic nucleus NGC 3822, based on 17 yr (2008─2025) of X-ray, ultraviolet (UV), and optical observations. The data set includes observations from ...
  • 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 ...
  • Exoplanets 
    Puravankara, Manoj; Banyal, R. K; Majumdar, Liton; Goyal, Jayesh; Nandy, D; Chatterjee, Sourav; Narendranath, S; Tej, Anandmayee; Sivarani, T (Springer Nature, 2025-12)
    The study of exoplanets is one of the fastest-growing areas in astronomy. The number of known exoplanets has increased dramatically, providing new insights into the galaxy’s diversity and abundance of planetary systems. ...
  • Transients and time domain astrophysics 
    Bhalerao, Varun; Misra, K; Anupama, G. C; Iyyani, S; Joshi, Jagdish C; Nayana, A. J; Resmi, L; Sahu, D. K; Tendulkar, Shriharsh (Springer Nature, 2025-12)
    Time Domain Astronomy (TDA) has ushered in a new era of cosmic exploration. This has been possible with the advanced sensitive surveys that have allowed the discovery and classification of transients to reach unprecedented ...
  • UVIT data release version 7: Regenerated high-level UVIT data products 
    Joseph, P; Tandon, S. N; Ghosh, S. K; Stalin, C. S (Springer Nature, 2025-12)
    Ultra-Violet Imaging Telescope (UVIT) on board AstroSat is an active telescope capable of highresolution far-ultraviolet imaging (<1.5) and low-resolution (λ/δλ ≈ 100) slitless spectroscopy with a fieldof-view as large as ...
  • Sample of 25 radio galaxies with highly unusual radio morphologies, selected from the LoTSS-DR2 survey at 144 MHz 
    Krishna, G; Patra, Dusmanta; Joshi, Ravi (Springer Nature, 2025-12)
    From a careful visual scrutiny of the radio structures of a well-defined sample of 2428 sources in the LoTSS-DR2 survey made at 144 MHz with a 6 beam, we have selected a subset of 25 (i.e., 1%) sources showing highly unusual ...
  • Fabrication of liquid-crystal retarders for solar polarimetry: A facile method 
    Phanindra, D. V. S; Greeshma, L. S; Vincent, Della; Raees, Muhammed; Nagaraju, K; Hegde, Gurumurthy; Sreekumar, P; Namboothiry, Manoj A. G (Springer Nature, 2025-12)
    A high-precision polarimeter for simultaneous multi-line spectropolarimetric Sun observations is under development at Indian Institute of Astrophysics. Towards this end, we plan to use liquid-crystal retarders as the ...

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