• Morphological complexity of NGC 628—a multiwavelength multiscale analysis using the ordinal pattern framework 

  Chanu, Athokpam Langlen; Amrutha, S; Pravabati, C; Park, C (American Astronomical Society, 2026-05-20)

  As statistical systems, galaxies exhibit a rich interplay between organized structure and stochastic fluctuations across a broad range of spatial scales. This duality motivates the need for quantitative frameworks capable ...
• Temporal variation in the coronal radius parameter in a jetted tidal disruption event: Swift J1644+57 

  Chatterjee, Arka; Hayasaki, Kimitake; Nandi, Prantik; Neeraj, Kumari; Heiland, Skye R; Jana, Arghajit; Naik, Sachindra; Safi-Harb, Samar (American Astronomical Society, 2026-05-01)

  Tidal disruption events are exotic astrophysical phenomena where matter from a star or the interstellar medium is captured by a supermassive black hole. The process liberates enormous energy, within a few months to a year ...
• An FUV-optical approach for studying hierarchical star formation in nearby galaxies with UVIT 

  Ananthu, Sanal; Shashank, Gairola; Subramanian, S; Jayanth, Rao C; Menon, Shyam H; Mondal, Chayan; Muraleedharan, Sreedevi (American Astronomical Society, 2026-05-10)

  Young star-forming clumps (SFCs) emit strongly in the ultraviolet (UV), making UV imaging ideal for detecting them. The Ultraviolet Imaging Telescope (UVIT) on board AstroSat, with 1.5 resolution, has enabled the ...
• Investigating the circumgalactic medium through Mg II absorption coincidence 

  Sharma, Paryag; Srianand, R; Chand, H; Guha, Labanya Kumar (Oxford University Press on behalf of the Royal Astronomical Society, 2026-05)

  We present a statistical measurement of the transverse coherence of Mg ii λλ2796, 2803 absorption using a large sample of 9204 absorber-centric quasar sightline pairs from the Sloan Digital Sky Survey. We quantify the ...
• Galactic-scale evolution of classical and complex radio galaxies: Impact of ambient morphology and jet geometry 

  Giri, Gourab; Ghosh, Prajnadipt; Joshi, Ravi; Caproni, Anderson; Rossi, Paola; Bodo, Gianluigi; Kundu, Sayan; Thorat, K; Chatterjee, Swarna; Borgogno, Dario; Vittorini, Valerio; Tavani, Marco (EDP Sciences, 2026-05)

  Context. Extragalactic jets, following their launching, exhibit a wide range of propagation orientations relative to the host galaxy’s principal axis. This initial (mis)alignment has been shown to exert a substantial ...
• Stationary stars are axisymmetric in higher curvature gravity 

  Dubey, Nitesh K; Kolekar, Sanved; Sarkar, Sudipta (American Physical Society, 2026-05-15)

  The final equilibrium stage of stellar evolution can result in either a black hole or a compact object, such as a white dwarf or neutron star. In general relativity, both stationary black holes and stationary stellar c ...
• Baryonic ecosystem IN galaxies (BEINGMgII) III. Cool gas reservoirs at 0.3≤z ≤1.6 in the dark energy survey 

  Chaudhary, Reena; Joshi, Ravi; Das, Sarbeswar; Fumagalli, Michele; Kacprzak, Glenn G; Fossati, Matteo; Peroux, Celine; Ho, Luis C (EDP Sciences, 2026-05)

  We investigate the origin of intervening cool Mg ii absorption detected in the spectra of background quasars and the nature of associated galaxies across a broad redshift range of 0.3 ≤ z ≤ 1.6, and a largely unexplored ...
• Star formation beyond the optical disk: The low-density outskirts of NGC 2090 

  Yadav, Jyoti; Mousumi Das; Amrutha, S; Rigopoulou, Dimitra (EDP Sciences, 2026-05)

  We present a far-ultraviolet (FUV) analysis of the star-forming complexes (SFCs) in the nearby spiral galaxy NGC 2090 based on observations from the Ultraviolet Imaging Telescope, and compare the FUV emission with that ...
• WALLABY pilot survey: H i depletion times within the stellar discs of nearby galaxies 

  Lee, Seona; Catinella, Barbara; Westmeier, Tobias; Cortese, Luca; Staveley-Smith, Lister; Lelli, Federico; Wong, O. Ivy; Ascasibar, Yago; Boselli, A; Brown, Toby; Deg, Nathan; Akhil, Krishna R; Leahy, D; Rahman, Syed F; Rhee, Jonghwan (Oxford University Press on behalf of Royal Astronomical Society, 2026-05)

  Neutral atomic hydrogen (H i) reservoirs typically extend far beyond the inner star-forming regions of galaxies, and global H i measurements, which mix these distinct environments, limit our understanding of the gas–star ...
• Blue straggler in the making: An X-Ray active binary in Algol configuration 

  Sheikh, A. H; Medhi, B. J; Subramaniam, A; Messina, S; Das, Susmita; Sarkar, Hitendra; Bhardwaj, Anupam; Poro, Atila; Kounkel, Marina; Sagar, R (American Astronomical Society, 2026-05-01)

  We report an extremely rare X-ray active blue straggler star (BSS) in Collinder 261, undergoing ongoing Rochelobe overflow in a semidetached binary in an Algol-type configuration with an orbital period of Porb ∼ 2.112 days, ...
• The broad-band spectral energy distribution of candidate neutrino blazars 

  Bharathan, Athira M; Stalin, C. S; Bottcher, M; Sahayanathan, S; Mathew, B; Bhattacharyya, Subir (Oxford University Press on behalf of Royal Astronomical Society, 2026-05)

  Blazars, the jet-dominated class of active galactic nuclei comprising flat-spectrum radio quasars (FSRQs) and BL Lacertae objects (BL Lacs), are now increasingly identified as potential sources of high-energy neutrinos. ...
• Stellar astrophysics in the ultraviolet: Setting the scene 

  Fu, Xiaoting; Zanna, Giulio Del; Ji, Li; Geier, Stephan; Dorsch, Matti; Jadhav, Vikrant V; Sutaria, F. K; Li, Chengyuan; Parker, Quentin; Fang, Xuan (Springer Nature, 2026-06)

  The ultraviolet (UV) spectral domain occupies a unique position in stellar astrophysics, serving as the bridge between the thermal continuum of photospheres and the high-energy, non-thermal processes of stellar coronae and ...
• Stellar contents and star formation in IRAS 18456-0223 

  Pandey, Nilesh; Kamath, U. S (Springer Nature, 2026-06)

  We use various analytical techniques to study Young Stellar Objects (YSOs) in an area of approximately 10'×10' in the IRAS 18456-0223 star-forming region. We use archival optical (Gaia DR3) and infrared (2MASS, UKIDSS, ...
• SN 2023xgo: Helium-rich type Icn or carbon-flash type Ibn supernova? 

  Gangopadhyay, A; Sollerman, Jesper; Tsalapatas, Konstantinos; Maeda, K; Dukiya, Naveen; Schulze, Steve; Fransson, C; Sarin, Nikhil; Pessi, Priscila J; Singh, Mridweeka; Wise, Jacob L; Nakaoka, Tatsuya; Singh, Avinash; Dastidar, R; Kawabata, Miho; Qin, Yu-Jing; Das, Kaustav K.; Perley, Daniel A; Fremling, Christoffer; Taguchi, Kenta; Hinds, K. -Ryan; Lunnan, Ragnhild; Teja, Rishabh Singh; Dubey, Monalisa; Ailawadhi, Bhavya; Banerjee, Smaranika; Kawabata, K. S; Misra, K; Sahu, D. K; Brennan, S; Kasliwal, Mansi M; Ho, Anna Y. Q; Bochenek, Aleksandra; Rusholme, Ben; Laher, Russ R; Smith, Roger; Purdum, Josiah; Sravan, Niharika (Oxford University Press on behalf of Royal Astronomical Society, 2026-04)

  We present observations of SN 2023xgo, a transitional Type Ibn/Icn SN, from −5.6 to 63 d relative to r-band peak. Early spectra show C III λ5696 emission like Type Icn SNe, shifting to Type Ibn features. The He I velocities ...
• The ALMA-QUARKS survey: Evidence of an explosive molecular outflow in IRAS 15520─5234 

  Hoque, Ariful; Baug, Tapas; Guzman, Estrella; Fernandez Lopez, Manuel; Liu, Tie; Garay, Guido; Goldsmith, Paul F; Xu, Feng-Wei; Tang, Xindi; Sanhueza, Patricio; Dewangan, Lokesh; Gupta, Shivani; Dib, S; Zapata, Luis A; Hwang, Jihye; Bhadari, Naval Kishor; Bally, J; Das, Swagat; Yang, A.Y; Gorai, Prasanta; Maity, Arup Kumar; Chibueze, J. O; Garcia, Pablo; Bronfman, Leonardo; Liu, Xunchuan; Tóth, L. Viktor; Usman, Shehu Muhammad; Kim, Kee-Tae (American Astronomical Society, 2026-04-20)

  We present a study of the massive protocluster IRAS 15520–5234, which displays evidence of an explosive molecular outflow that unleashed a kinetic energy of at least 1048 erg. The protocluster contains 16 dense cores ...
• Improving accretion diagnostics for young stellar objects with mid-infrared hydrogen lines from JWST/MIRI 

  Shridharan, B; Manoj, P; Pathak, Vinod C; Caratti o Garatti, A; Banerjee, Bihan; Henning, Th; Kamp, I; van Dishoeck, E; Tyagi, Himanshu; Arun, R; Mathew, B; Güdel, M; Lagage, P.-O (EDP Sciences, 2026-04)

  Context. We present a comprehensive study of mid-infrared neutral hydrogen (H I) emission lines in 79 nearby (d < 200 pc) young stars using the James Webb Space Telescope (JWST) Mid-Infrared Instrument (MIRI). This work ...
• Interstellar ultraviolet Lyα high resolution mapping from the new horizons P-Alice instrument 

  Becker, Tracy M; Gladstone, G. Randall; Parker, Joel Wm; Shull, J. Michael; Redfield, Seth; Ruetschle, Sarah; Cunningham, Nathaniel; Froning, Cynthia S; Kammer, Joshua A; Spencer, John R; Postman, Marc; Lauer, T. R; Murthy, J; Versteeg, Maarten H; Pineau, Jon P; Retherford, Kurt D; Verbiscer, Anne J; Brandt, Pontus; Singer, Kelsi N; Stern, S. Alan (American Astronomical Society, 2026-04)

  We present New Horizons Alice spectral observations of interstellar hydrogen Lyα emissions at a vantage point of 57 au from the Sun. The observations were conducted as a pair of orthogonal scans to produce high spatial angular ...
• Λ(t)CDM model: Cosmological implications and dynamical system analysis 

  Chaudhary, Himanshu; Mandal, Ratul; Bashir, Masroor; Sharma, Vipin Kumar; Debnath, Ujjal (IOP Publishing, 2026-04)

  We investigated a time-varying cosmological constant model using recent BAO measurements from DESI DR2, combined with Type Ia supernova samples (Pantheon +, DES-Dovekie, and Union3) and CMB shift parameters, to constrain ...
• Magnetic field disturbances in the martian ionosphere: Competing roles of ionospheric currents and solar wind interaction 

  Leelavathi, V; Rao, N. V; Pavan, D. G (Wiley on behalf of American Geophysical Union, 2026-04)

  We examine disturbances in the total magnetic field in the Martian ionosphere at altitudes of 150–1,000 km and investigate their potential sources, focusing on ionospheric density variations and solar wind dynamic pressure ...
• B-fields and dust in interstellar filaments using dust polarization (BALLAD-POL). VI. grain alignment mechanisms in the massive quiescent filament G16.96+0.27 using dust polarization observations from JCMT/POL-2 

  Pravash, Saikhom; Hoang, Thiem; Archana Soam; Gu, Qi-Lao; Liu, Tie; Diep, Pham Ngoc; Tram, Le Ngoc; Ngoc, Nguyen Bich (American Astronomical Society, 2026-04)

  Dust polarization induced by aligned nonspherical grains acts as an important tool to trace the magnetic field (B-field) morphologies and strengths in molecular clouds and constrain grain properties and their alignment ...

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