We construct a smooth trajectory in Minkowski spacetime that is inertial in the asymptotic past and
future but undergoes approximately uniform acceleration for a finite duration. In a suitable limit, this
trajectory ...
Observational data play a pivotal role in identifying cosmological models that are both theoretically consistent
and empirically viable. In this work, we investigate the level of preference for dynamical dark energy over ...
This paper focuses on extending the use of Minkowski tensors to analyze anisotropic signals in cosmological data, focusing on those introduced by redshift space distortions. We derive the ensemble average of the two ...
Coronal mass ejections (CMEs) are powerful drivers of space weather, with magnetic flux ropes (MFRs) widely
regarded as their primary precursors. However, the variation in the reconnection (RC) flux during the evolution ...
We report on a spectroscopic study of the bright, nearby type IIn supernovae SN 2017hcc and SN 2023usc using data obtained from the Himalayan Chandra Telescope. SN 2017hcc is a well-studied event, and our sampling covers ...
Nandi, Payel; Colina, Luis; Riffel, R. A; Pereira Santaella, Miguel; Stalin, C. S; Saikia, D. J; Álvarez-Márquez, Javier; Kissler-Patig, Markus(American Astronomical Society, 2026-04-20)
We present a multiwavelength study of nuclear outflows in the nearby dwarf Seyfert galaxy NGC 4395, which
hosts an intermediate-mass black hole. Using JWST/NIRSpec and MIRI integral-field-unit spectroscopy
(1.66–28.6 ...
Supernovae characterized by enduring narrow optical hydrogen emission lines (SNe IIn) are believed to result primarily from the core-collapse of massive stars undergoing sustained interaction with a dense circumstellar ...
We investigate the magnetic origin of the coronal mass ejection that occurred on 2023 November 28 at 19:50 UT
from NOAA Active Region 13500 located near the solar disk center. The eruption was associated with an
S-shaped ...
Singh, Mridweeka; Kwok, Lindsey A; Jha, Saurabh W; Dastidar, R; Larison, Conor; Filippenko, A. V; Andrews, Jennifer E; Andrews, Moira; Anupama, G. C; Arunachalam, Prasiddha; Auchettl, Katie; Banhidi, Dominik; Barna, Barnabas; Bostroem, K. Azalee; Brink, Thomas G; Cartier, Regis; Chen, Ping; Christy, Collin T; Coulter, David A; Covarrubias, Sofia; Davis, Kyle W; Dickinson, Connor B; Dong, Yize; Farah, Joseph R; Flors, Andreas; Foley, Ryan J; Franz, Noah; Fremling, Christoffer; Galbany, L; Gangopadhyay, A; Garg, Aarna; Gates, Elinor L; Graur, Or; Gordon, Alexa C; Hiramatsu, Daichi; Hoang, Emily; Howell, D. A; Hsu, Brian; Johansson, J; Joshi, Arti; Kahinga, Lordrick A; Kaur, Ravjit; Kumar, Sahana; Kumnurdmanee, Piramon; Kuncarayakti, H; LeBaron, Natalie; Lidman, C; Liu, Chang; Maeda, K; Maguire, Kate; Martin, Bailey; McCully, Curtis; Mehta, Darshana; Menotti, Luca M; Metevier, Anne J; Miller, Adam A; Misra, K; Murphey, C. Tanner; Newsome, Megan; Padilla Gonzalez, E; Patra, Kishore C; Pearson, Jeniveve; Piro, Anthony L; Polin, Abigail; Ravi, Aravind P; Rest, Armin; Rehemtulla, Nabeel; Retamal, Nicolas Meza; Robinson, Olivia M; Rojas-Bravo, Cesar; Sahu, D. K; Sand, D. J; Schmidt, B. P; Schulze, Steve; Schwab, Michaela; Shrestha, Manisha; Siebert, Matthew R; Simha, Sunil; Smith, Nathan; Sollerman, Jesper; Srivastav, S; Subrayan, Bhagya M; Szalai, Tamas; Taggart, Kirsty; Teja, Rishabh Singh; Terwel, Jacco H; Tinyanont, S; Valenti, S; Vinko, J; Westerling, Aya L; Wheeler, J. C; Yang, Yi; Zheng, W(American Astronomical Society, 2026-03-10)
We present extensive ultraviolet to optical photometric and optical to near-infrared (NIR) spectroscopic follow-up observations of the nearby intermediate-luminosity (MV = −16.81 ± 0.19 mag) Type Iax supernovae (SNe Iax) ...
Accretion-driven outbursts in young stellar objects remain poorly understood, largely limited by a statistically small sample of closely followed-up events. This underscores the importance of a thorough exploration of each ...
Ahumada, Tomas; Anand, Shreya; Bulla, Mattia; Gupta, Vaidehi; Kasliwal, Mansi M; Stein, Robert; Karambelkar, Viraj; Bellm, Eric C; Jegou du Laz, Theophile; Coughlin, Michael W; Andreoni, Igor; Banerjee, Smaranika; Bochenek, Aleksandra; Hinds, K. -Ryan; Hu, Lei; Palmese, Antonella; Perley, Daniel A; Pletskova, Natalya; Salgundi, Anirudh; Singh, A; Sollerman, Jesper; Swain, Vishwajeet; Wold, Avery; Bhalerao, Varun; Cenko, S. Bradley; Cook, David O; Copperwheat, Christopher M; Graham, Matthew J; Kaplan, David L; Singer, Leo P; Sravan, Niharika; Busmann, Malte; Gassert, Julius; Gruen, Daniel; Sommer, Julian; Zhang, Yajie; Amsellem, Ariel; Cabrera, Tomas; Hall, Xander J; Kunnumkai, Keerthi; O’Connor, Brendan; Barna, Tyler; Nunes, Felipe Fontinele; Toivonen, Andrew; Sasli, Argyro; Masci, Frank J; Chen, Tracy X; Dekany, Richard; Purdum, Josiah; Le Calloch, Antoine; Anupama, G. C; Barway, Sudhanshu(IOP Publishing, 2026-03)
We present the searches conducted with the Zwicky Transient Facility (ZTF) in response to S250206dm, a bona fide event with an online false alarm rate of one in 25 yr, detected by the International Gravitational Wave ...
Tiwari, Arihant; Rachana; Vivek, M; Rakshit, S(American Astronomical Society, 2026-03-01)
We present an analysis of 22,656 narrow-line Seyfert 1 galaxies (NLSy1s) from the Sloan Digital Sky Survey (SDSS) DR17 (0.1 ≤ z ≤ 0.9), identifying a sample of spectroscopically anomalous sources. These anomalies were ...
We model the formation of dust in the ejecta of Type Iax supernovae (SNe), which is a low-luminosity subclass of Type Ia SNe. A nonequilibrium chemical kinetic approach is adopted to trace the synthesis of molecules,
molecular ...
Mishra, Dibya Kirti; Chatterjee, Subhamoy; Jha, Bibhuti K; Raju, Hemapriya; Priyadarshi, Aditya; Hegde, M; Routh, Srinjana; Banerjee, D; Khan, M. Saleem(American Astronomical Society, 2026-03)
Kodaikanal Solar Observatory (KoSO) is one of the oldest solar observatories, possessing an archive of
multiwavelength solar observations, including white light, Ca II K, and Hα images spanning over a century. In
addition ...
We present a gas kinematic study of the massive protocluster G318.049+00.086. The protocluster is reported to contain 12 prestellar core candidates and four protostellar cores. Filamentary structures are identified using ...
We present a comprehensive multiwavelength study of a bright gamma-ray burst GRB 230204B, analyzing both
prompt and afterglow emissions. This GRB is highly energetic, with an isotropic equivalent energy emission of
Eiso ...
Reshma, M; Stalin, C. S; Mandal, A. K; Kayal, Abhijit; Gudennavar, S. B; Joseph, P(Elsevier B.V., 2026-03)
Active galactic nuclei are known to exhibit flux variations across the entire electromagnetic spectrum. Among these, correlations between UV/optical and X-ray flux variations serve as a key diagnostics for understanding ...
Choraghe, Komal; Mishra, Wageesh; Khuntia, Soumyaranjan(Oxford University Press on behalf of Royal Astronomical Society, 2026-03)
The solar wind at 1 au is primarily super-Alfvénic, butrare instances occur when the Alfvén speed surpassesthe solar wind
speed, resulting in occurrences of sub-Alfvénic intervals. During sub-Alfvénic intervals, the solar ...
Dagore, A; Joseph, P; Tandon, S. N; Subramaniam, A; Ghosh, S. K; Stalin, C. S(American Astronomical Society, 2026-03)
The Ultra-Violet Imaging Telescope (UVIT) is one of the five payloads on board the first Indian multiwavelength astronomical observatory, AstroSat, launched by the Indian Space Research Organisation on 2015 September 28. ...
Sarkar, Sougata; Biswas, Prerana; Kalinova, Veselina; Roy, Nirupam; Patra, Narendra Nath; Kurapati, Sushma(Oxford University Press on behalf of Royal Astronomical Society, 2026-03)
The distribution of dark matter in the inner regions of galaxies poses a key challenge for small-scale Lambda-cold dark
matter (Λ-CDM) cosmology. While CDM simulations predict cuspy inner density profiles, observations ...