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  • Kassis, Marc; Allen, Steven L; Alverez, Carlos; Baker, Ashley; Banyal, Ravinder K; Bertz, Robert; Beichman, Charles; Brown, Aaron; Brown, Matthew; Bundy, Kevin; Cabak, Gerald; Cetre, Sylvain; Chin, Jason; Chun, Mark R; Cooke, Jeff; Delorme, Jacques; Deich, William; Dekany, Richard G; Devenot, Mark; Doppmann, Greg; Edelstein, Jerry; Fitzgerald, Michael P; Fucik, Jason R; Gao, Maodong; Gibson, Steve; Gillingham, Peter R; Gomez, Percy; Gottschalk, Colby; Halverson, Sam; Hill, Grant; Hinz, Philip; Holden, Bradford P; Howard, Andrew W; Jones, Tucker; Jovanovic, Nemanja; Kirby, Evan; Krishnan, Shanti; Kupke, Renate; Lanclos, Kyle; Larkin, James E; Leifer, Stephanie D; Lewis, Hilton A; Lilley, Scott; Lu, Jessica R; Lyke, James E; MacDonald, Nicholas; Martin, Christopher; Mather, John; Matuszewski, Mateusz; Mawet, Dimitri; McCarney, Ben; McGurk, Rosalie; Marin, Eduardo; Millar-Blanchaer, Maxwell A; Nance, Craig; Nash, Reston B; Neill, James D; O'Meara, John M; Peretz, Eliad; Poppett, Claire; Konopacky, Quinn; Radovan, Matthew V; Ragland, Sam; Rider, Kodi; Roberts, Mitsuko; Rockosi, Constance; Rubenzahl, Ryan; Sallum, Stephanie; Sandford, Dale; Savage, Maureen; Simha, Sunil; Skemer, Andy J; Steidel, Charles C; Stelter, Richard D; Surendran, Avinash; Walawender, Josh; Westfall, Kyle B; Wizinowich, Peter; Wright, Shelley; Yeh, Sherry (Wiley-VCH GmbH, 2023-10)
    Since the start of science operations in 1993, the twin 10-m W. M. Keck Observatory (WMKO) telescopes have continued to maximize their scientific impact and to produce transformative discoveries that keep the observing ...
  • Gondhalekar, Y; Safonova, M; Saha, S (Elsevier B.V., 2023-07)
    Image restoration in astronomy has been considered a vital step in many ground-based observational programs that often suffer from sub-optimal seeing due to atmospheric turbulence, distortion of stellar shapes due to ...
  • Dharmadhikari, Radhika; Parihar, P; Jacob, A (Springer Nature, 2023-12)
    The use of innovative ideas and the latest technology have undoubtedly brought down telescope costs substantially. However, there are still ways to further reduce the cost of optical ground-based telescopes and make them ...
  • Fazlu, Rahman; Pravabati, C; Ghosh, Tuhin (IOP Publishing, 2024-01)
    Understanding the statistical properties of synchrotron emission from our Galaxy is valuable from the perspective of observations targeting signals of cosmological origin, as well as for understanding physical processes ...
  • Divakar, Devika K; Saraf, Pallavi; Sivarani, T; Doddamani, Vijayakumar H (Indian Academy of Sciences, 2024-06)
    A detailed study of stellar populations in Milky Way (MW) satellite galaxies remains an observational challenge due to their faintness and fewer spectroscopically confirmed member stars. We use unsupervised machine learning ...
  • Mishra, Dibya Kirti; Routh, Srinjana; Jha, Bibhuti K; Chatzistergos, Theodosios; Basu, Judhajeet; Chatterjee, Subhamoy; Banerjee, D; Ermolli, Ilaria (American Astronomical Society, 2024-01-20)
    Chromospheric differential rotation is a key component in comprehending the atmospheric coupling between the chromosphere and the photosphere at different phases of the solar cycle. In this study, we therefore utilize the ...
  • Srinivasaragavan, Gokul P; Swain, Vishwajeet; O’Connor, Brendan; Anand, Shreya; Ahumada, Tomás; Perley, Daniel; Stein, Robert; Sollerman, Jesper; Fremling, Christoffer; Cenko, S. Bradley; Antier, S; Guessoum, Nidhal; Hussenot-Desenonges, Thomas; Hello, Patrice; Lesage, Stephen; Hammerstein, Erica; Miller, M. Coleman; Andreoni, Igor; Bhalerao, Varun; Bloom, Joshua S; Dutta, Anirban; Gal-Yam, Avishay; Hinds, K-Ryan; Jaodand, Amruta; Kasliwal, Mansi; Kumar, Harsh; Kutyrev, Alexander S; Ragosta, Fabio; Ravi, Vikram; Sharma, Kritti; Teja, Rishabh Singh; Yang, Sheng; Anupama, G. C; Bellm, Eric C; Coughlin, Michael W; Mahabal, Ashish A; Masci, Frank J; Pathak, Utkarsh; Purdum, Josiah; Roberts, Oliver J; Smith, Roger; Wold, Avery (American Astronomical Society, 2024-01-10)
    We report observations of the optical counterpart of the long gamma-ray burst (GRB) GRB 230812B and its associated supernova (SN) SN 2023pel. The proximity (z = 0.36) and high energy (Eγ,iso ∼ 1053 erg) make it an important ...
  • Meenakshi, P; Goswami, A (Springer, 2024-01)
    We present results from the analysis of 88 carbon stars selected from Hamburg/ESO (HES) survey using low-resolution spectra (R ∼1330 & 2190). The spectra were obtained with the Himalayan Faint Object Spectrograph Camera ...
  • Rajana, Siva Sai Kumar; Panda, Sampad Kumar; Jade, Sridevi; Vivek, Chiranjeevi G; Upadhayaya, A.K; Bhardwaj, Arti; Jorphail, S; Seemala, Gopi Krishna (Springer, 2024-01)
    We investigated the ionosphere response to the two severe geomagnetic storms in the ascending phase of solar cycle 25 which occurred during the 23-24 March 2023 (SYM-Hmin = −169 nT) and 23-24 April 2023 (SYM-Hmin = −233 ...
  • Pandey, Ashwani; Kushwaha, Pankaj; Wiita, Paul J; Prince, Raj; Czerny, Bożena; Stalin, C. S (EDP Sciences, 2024-01)
    Context. Transition blazars exhibit a shift from one subclass to the next during different flux states. It is therefore crucial to study them to understand the underlying physics of blazars. Aims. We probe the origin of ...
  • Mondal, Chayan; Barway, Sudhanshu (EDP Sciences, 2024-01)
    Aims. We aim to investigate the characteristics of the bar and inner disc in the collisional ring galaxy Cartwheel. Methods. We used integral field unit (IFU) observations from the Multi-Unit Spectroscopic Explorer (MUSE) ...
  • Panthi, Anju; Vaidya, Kaushar; Vernekar, Nagaraj; Subramaniam, A; Jadhav, Vikrant; Agarwal, Manan (Oxford University Press on behalf of Royal Astronomical Society, 2024-01)
    We present a study of blue straggler stars (BSSs) of open cluster NGC 7142 using AstroSat/UVIT data and other archival data. Using a machine-learning-based algorithm, ML-MOC, on Gaia DR3 data, we find 546 sources as cluster ...
  • Paliya, Vaidehi S; Stalin, C. S; Dominguez, Alberto; Saikia, D. J (Oxford University Press on behalf of Royal Astronomical Society, 2024-01)
    Narrow-line Seyfert 1 (NLSy1) galaxies are an enigmatic class of active galactic nuclei (AGN) that exhibit peculiar multiwavelength properties across the electromagnetic spectrum. For example, these sources have allowed ...
  • Millar, David C. L; Fletcher, Lyndsay; Joshi, Jayant (Oxford University Press on behalf of Royal Astronomical Society, 2024-01)
    Chromospheric oscillations can give us insight into the physical environment in the solar atmosphere, both in quiet Sun and flaring conditions. Many authors have reported increases in the prevalence of 3-minute oscillations ...
  • Sur, Sharanya; Subramanian, Kandaswamy (Oxford University Press on behalf of Royal Astronomical Society, 2024-01)
    Using magnetohydrodynamic simulations of fluctuation dynamos in turbulent flows with rms Mach numbers Mrms = 0.2, 1.1, and 3, we show that magnetic pressure forces play a crucial role in dynamo saturation in supersonic ...
  • Swain, Subhashree; Shalima, P; Latha, K. V. P (Oxford University Press on behalf of Royal Astronomical Society, 2024-01)
    We present a 3D radiative transfer model for the spectral energy distribution (SED) of NGC 1365, which is a ‘changing look’ Seyfert 1.8 type active galactic nucleus (AGN). The SED from the ultraviolet (UV) to the infrared ...
  • Kataria, Sandeep Kumar; Vivek, M (Oxford University Press on behalf of Royal Astronomical Society, 2024-01)
    We conducted a statistical study of black hole masses of barred and unbarred galaxies in the IllustrisTNG100 cosmological magnetohydrodynamical simulations. This work aims to understand the role of the bars in the growth ...
  • Mayya, Y. D; Barway, Sudhanshu; Gomez-Gonzalez, V. M. A; Zaragoza-Cardiel, J (Oxford University Press on behalf of Royal Astronomical Society, 2024-01)
    We present the results obtained by analysing the new AstroSat Ultra-Violet Imaging Telescope (UVIT) far-ultraviolet (FUV) image of the collisional-ring galaxy Cartwheel. The FUV emission is principally associated with the ...
  • Shejeelammal, J; Goswami, A (Oxford University Press on behalf of Royal Astronomical Society, 2024-01)
    The Carbon-Enhanced Metal-Poor (CEMP) stars with no enhancement of neutron-capture elements, the so-called CEMP-no stars are believed to be the direct descendants of first-generation stars and provide a unique opportunity ...
  • Jana, Arghajit; Chatterjee, Debjit; Chang, Hsiang-Kuang; Naik, Sachindra; Monda, Santanu (Oxford University Press on behalf of Royal Astronomical Society, 2024-01)
    We present the results obtained from the spectral studies of black hole X-ray binary GX 339−4 using AstroSat observations during its 2021 outburst. AstroSat observed the source in the intermediate state for ∼600 ks. The ...

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