• Morphological signatures of gravitational evolution, redshift-space distortions, and massive neutrinos in large-scale structure 

  Goyal, Priya; Appleby, S; Pravabati, C; Park, C (IOP Publishing on behalf of Sissa Medialab, 2026-08)

  We investigate the morphological properties of large-scale structure in the Universe and the physical processes that modify the excursion-set morphology of the threedimensional matter density field. Using the Quijote N-body ...
• Time delay as a probe of multiple photon spheres 

  Kajol, P; Kolekar, Sanved (American Physical Society, 2026-10-15)

  Black hole shadow images are primarily determined by the properties of photon spheres and can exhibit degeneracies across different spherically symmetric spacetime geometries. We show that time delay observables associated ...
• Spectroscopic signatures of nonuniform lateral expansion of a coronal mass ejection in the low corona with ADITYA-L1/VELC 

  Tripathi, Saurabh; Samanta, T; Joshi, Jayant (American Astronomical Society, 2026-10-01)

  Coronal mass ejections (CMEs) undergo rapid evolution in the low corona (<2R⊙), yet their three-dimensional kinematics remain poorly constrained. We present a spectroscopic and imaging analysis of a CME observed on 2024 ...
• Morphology of solar filaments during the solar maximum of cycle 24: A study of 35 filaments focusing on chirality, barb orientation, skewness, and eruptive behavior 

  Jain Jacob, P. T; Maurya, Ram Ajor (American Astronomical Society, 2026-10-01)

  Filaments in the solar atmosphere are plasma structures held aloft by magnetic fields, counteracting the pull of gravity. Analyzing their magnetic structure is challenging due to the lack of direct observations of their ...
• Contributions and timing characteristics of Forbush decreases from substructures of interacting ICMEs 

  Mirtoshev, Zavkiddin; Mishra, Wageesh; Srivastava, N (Oxford University Press on behalf of Royal Astronomical Society, 2026-10)

  Forbush decreases (FDs) are short-term reductions in galactic cosmic ray (CR) intensity associated with interplanetary coronal mass ejections (ICMEs). We analyze a diverse sample of eight interacting ICME events (2010–2015), ...
• Revisiting neutrino event epochs for the blazar PKS 0735+178 with TESS 

  Kishore, Shubham; Gupta, A. C; Bose, D (American Astronomical Society, 2026-10-01)

  We present here the results of the optical light curve variability analysis of the blazars PKS 0735+178, in weeks-scale flare state, observed in three sectors with the Transiting Exoplanet Survey Satellite (TESS). The TESS ...
• A comparative analysis of the long-term optical variability characteristics of narrow and broad-line Seyfert 1 galaxies at 𝒛 >0.8 

  Dey, Aratrika; Stalin, C. S; Akshith, S; Rakshit, S (Springer Nature, 2026-10)

  We present the results on a comparative analysis of the long-term optical variability characteristics of high-redshift narrowline Seyfert 1 (NLSy1) galaxies and broad-line Seyfert 1 (BLSy1) galaxies. Our sample spanning ...
• A novel approach to identify unseen companions: An in-depth study of GDR3 220_28 

  Cysil, T. B; Mathew, B; Shridharan, B; Muneer, S; Pramod Kumar, S; Nidhi, S; Kartha, Sreeja S; Bhattacharyya, Suman; Robin, T (Springer Nature, 2026-10)

  Emission lines in the spectrum and the excess seen in the spectral energy distribution (SED) at infrared (IR) wavelengths serve as crucial indicators of accretion activity and the presence of gas and dust in the circumstellar ...
• A gamma-ray-emitting head-tail radio galaxy swimming through the hot medium of the merging cluster A3627 

  Paliya, Vaidehi S; Bottcher, M; Panda, Swayamtrupta; Wani, Kiran; Saikia, D. J; Pandge, Mahadev; Stalin, C. S (American Astronomical Society, 2026-10-20)

  Head–tail radio sources are jetted active galactic nuclei (AGN) moving through the dense intracluster medium of galaxy clusters. They are extremely rare in the γ-ray sky, likely because they are usually observed at large ...
• Two years of shock interaction tracing three phases of evolution: The explosion of a type IIn supernova, SN 2019vxm 

  Rameshan, Gitika; Teja, Rishabh Singh; Sahu, D. K; Anupama, G. C; Yamanaka, Masayuki; Maeda, K; Nakaoka, Tatsuya; Goto, Sota; Brajesh Kumar; Singh, A; Kawabata, Miho; Kawabata, K. S; Taguchi, Kenta (American Astronomical Society, 2026-10-20)

  We present multiwavelength photometric and optical spectroscopic observations of the long-lived interacting supernova SN 2019vxm, spanning more than 2 yr after the explosion. SN 2019vxm is a slowly rising (rise time ∼ 43 ...
• Ringdown and tide: fingerprints of dark matter halo profiles 

  Bhowmik, Arkadip; Chowdhury, Avijit; Chakrabarti, Sayan (American Physical Society, 2026-10-15)

  Astrophysical black holes (BHs) are not isolated, but embedded in matter supplied by their host galaxies. We study how the shape of a surrounding dark matter halo modifies the ringdown and tidal response of an asymptotically ...
• Hawking-page phase transition for pure lovelock black holes 

  Dubey, Nitesh K; Kolekar, Sanved (American Physical Society, 2026-10-15)

  We investigate the thermodynamic properties of static, spherically symmetric anti--de Sitter (AdS) black holes, focusing on the interplay between characteristic temperatures, as well as on the universality of Ruppeiner ...
• Nonzero phase shift of evanescent acoustic waves in the lower solar atmosphere 

  Kumar, Hirdesh; Rajaguru, S. P; Brajesh Kumar (EDP Sciences, 2026-10)

  Context. The phase behavior of acoustic waves in the lower solar atmosphere provides important information about wave propagation. While previous studies have reported nonzero phase shifts in the evanescent frequency range ...
• Coordinated coronagraphic observations from proba-3 and Aditya-L1: Investigating coronal mass ejection energetics in the inner corona 

  Agarwal, Anjali; Mishra, Wageesh; Ramesh, R; Priyal, M; Zhukov, Andrei N; Singh, J; Gopalswamy, N; Khuntia, Soumyaranjan; Sasikumar Raja, K; Bourgoignie, B; Dolla, L; Shestov, S; Fineschi, S; Gunar, S; Lamy, P; Mierla, M; Peter, H; Rudawy, P; Tsinganos, K (EDP Sciences, 2026-10)

  Context. Constraining the plasma properties and energetics of coronal mass ejections (CMEs) in the inner corona is essential for understanding their early evolution, yet it remains challenging because of limited observations. ...
• Wild behaviour near the finish line: The type Ibn SN 2020able and its stratified environment 

  Tartaglia, L; Cappellaro, E; Valerin, G; Pastorello, A; Benetti, S; Reguitti, A; Tomasella, L; Lundqvist, P; Misra, K; Gangopadhyay, A; Dastidar, R; Ailawadhi, Bhavya; Dimple; Brajesh Kumar; Jha, Vivek Kumar; Singh, Mridweeka; Elias-Rosa, N; Gutierrez, Claudia P; Howell, D. A; Hiramatsu, Daichi; Pellegrino, Craig; Andrews, Jennifer E; Sand, D. J; Smith, Nathan; Pearson, Jeniveve; Wyatt, S; Ochner, P; Cai, Y. Z; Burke, J; McCully, Curtis; Newsome, Megan; Padilla Gonzalez, E (EDP Sciences, 2026-11)

  We present spectrophotometric observations of the Type Ibn supernova SN 2020able, along with a comprehensive analysis and modelling of its evolution. The transient occurred in SDSS J092602.93+243115.1, a faint host galaxy ...
• Exploring an X1.8 flare and associated quasi-periodic pulsations using SDO and Aditya-L1 observations, alongside NFFF extrapolation 

  Kumar, Pawan; Kumar, Sanjay; Sadashiv; Kanaujiya, Sachin Rajkapoor; Maurya, Yogesh Kumar (Springer Nature, 2026-10)

  The paper seeks to explore the initiation of an X1.8 class solar flare (SOL2024-10-09T0125) and the related quasi-periodic pulsations (QPPs), which are situated within NOAA active region 13848. To achieve this, we perform ...
• Transients and stellar activity as revealed by ultraviolet diagnostic tracers 

  de Grijs, R; Barstow, Martin A; Chahal, Deepak; Favata, Fabio; Fu, Xiaoting; Gomez De Castro, Ana; Hota, Sipra; Sutaria, F. K (Springer Nature, 2026-12)

  Ultraviolet (UV) observations offer unique insights into transient and variable astrophysical phenomena, from the Sun and nearby stars to supernovae and star-forming galaxies. Here, we summarise and review the diagnostic ...
• ROCKETS I: Investigating the impact of the rocket effect on two nearby young open clusters encased in infrared bubbles 

  Arun, R; Maheswar, G; Subramaniam, A; Saha, Piyali; Sudheesh, T. P; Shridharan, B; Mathew, B; Akhil, Krishna R (Cambridge University Press on behalf of Astronomical Society of Australia, 2026-10)

  We introduce ROCKETS (Rocket-driven Cluster Kinematics & Triggered Star-formation), a Gaia-based programme investigating kinematic fingerprints of stellar feedback or rocket effect in young star-forming regions. We analyse ...
• SDSS-V BHM: Evidence for a link between X-ray weakness and galaxy-scale ionised gas outflows in quasars 

  Demke, Delvin; Wylezalek, D; Wik, Daniel R; Vivek, M; Rankine, Amy L; Brandt, W. N; Schneider, D. P; Assef, Roberto J; Aydar, Catarina; Anderson, S. F (EDP Sciences, 2026-10)

  Active galactic nuclei (AGNs) are among the most powerful engines in the Universe. A central open question is how accretion physics, obscuration, and feedback are intertwined in shaping these systems. This paper presents ...
• 1.5D investigation of the Hanle effect in the Ca I 4227 line using partial frequency redistribution: Comparison of synthetic Stokes profiles in Bifrost and MURaM-ChE rMHD models 

  Agnihotri, Devang; Anusha, L. S; Przybylski, D; Cameron, R. H; Solanki, S. K (EDP Sciences, 2026-10)

  Context. Modeling scattering polarization in the Ca I 4227 Å line is important for diagnosing chromospheric magnetic fields. This requires solving the polarized radiative transfer equation, including the Hanle effect and ...

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