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  • SIGNALS: I. Survey description 
    Rousseau-Nepton, L; Martin, R. P; Robert, C; Drissen, L; Amram, P; Prunet, S; Martin, T; Moumen, I; Adamo, A; Alarie, A; Barmby, P; Boselli, A; Bresolin, F; Bureau, M; Chemin, L; Fernandes, R. C; Combes, F; Crowder, C; Della Bruna, L; Duarte Puertas, S; Egusa, F; Epinat, B; Ksoll, V. F; Girard, M; Gomez Llanos, V; Gouliermis, D; Grasha, K; Higgs, C; Hlavacek-Larrondo, J; Ho, I.-T; Iglesias-Paramo, J; Joncas, G; Kam, Z. S; Karera, P; Kennicutt, R. C; Klessen, R. S; Lianou, S; Liu, L; Liu, Q; Luiz de Amorim, A; Lyman, J. D; Martel, H; Mazzilli-Ciraulo, B; McLeod, A. F; Melchior, A-L; Millan, I; Molla, M; Momose, R; Morisset, C; Pan, H.-A; Pati, A. K; and 13 co-authors (Oxford University Press on behalf of the Royal Astronomical Society, 2019-11)
    SIGNALS, the Star formation, Ionized Gas, and Nebular Abundances Legacy Survey, is a large observing programme designed to investigate massive star formation and H II regions in a sample of local extended galaxies. The ...
  • Signature of extended solar cycles as detected from Ca ii K synoptic maps of Kodaikanal and Mount Wilson Observatory 
    Chatterjee, Subhamoy; Banerjee, D; McIntosh, S.W; Leamon, Robert J; Dikpati, Mausumi; Srivastava, Abhishek K; Bertello, L (IOP Publishing, 2019-03-20)
    In recent years there has been a resurgence of the study of extended solar cycles (ESCs) through observational proxies mainly in extreme ultraviolet. But most of them are limited only to the space-based era covering only ...
  • Signatures for magnetospheric substorms in the geomagnetic field of dayside equatorial region: Origin of the ionospheric component 
    Sastri, J. H; Kamide, Y; Yumoto, K (American Geophysical Union, 2003-10)
    An event-based study is made of the conditions that lead to the ionospheric current component in the geomagnetic field signature for magnetospheric substorms in the dayside dip equatorial region. The substorm activity ...
  • Signatures of Alfven waves in the polar coronal holes as seen by EIS/Hinode 
    Banerjee, D; Perez-Suarez, D; Doyle, J. G (2009-06-26)
    Context. We diagnose the properties of the plume and interplume regions in a polar coronal hole and the role of waves in the acceleration of the solar wind. Aims. We attempt to detect whether Alfven waves are present in ...
  • Signatures of Light Massive Relics on non-linear structure formation 
    Banerjee, Arka; Das, Subinoy; Maharana, Anshuman; Sharma, R. K (Oxford University Press on behalf of Royal Astronomical Society, 2022-10)
    Cosmologies with Light Massive Relics (LiMRs) as a subdominant component of the dark sector are well-motivated from a particle physics perspective, and can also have implications for the σ8 tension between early and late ...
  • Signatures of the Impact of Flare-Ejected Plasma on the Photosphere of a Sunspot Light Bridge 
    Felipe, T; Collados, M; Khomenko, E; Rajaguru, S. P; Franz, M; Kuckein, C; Asensio Ramos, A (EDP Sciences, 2017-12)
    Aims. We investigate the properties of a sunspot light bridge, focusing on the changes produced by the impact of a plasma blob ejected from a C-class flare. Methods. We observed a sunspot in active region NOAA 12544 ...
  • Signatures of the superfluid–to–Mott-insulator transition in cold bosonic atoms in a one-dimensional optical lattice 
    Ramanan, S; Mishra, T; Luthra, M. S; Pai, R. V; Das, B. P (The American Physical Society, 2009-01)
    We study the Bose-Hubbard model using the finite size density matrix renormalization group method. We obtain a complete phase diagram for a system in the presence of a harmonic trap and compare it with that of the homogeneous ...
  • Signatures of untwisting magnetic field in a small emerging bipole in the solar photosphere 
    Sangeetha, C. R; Tripathi, Durgesh; Rajaguru, S. P (IOP Publishing, 2020-05-20)
    We perform a study of fluid motions and its temporal evolution in and around a small bipolar emerging flux region using observations made by the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory. We ...
  • Significance of bar quenching in the global quenching of star formation 
    George, K; Subramanian, S; Paul, K. T (EDP Sciences, 2019-08)
    The suppression of star formation in the inner kiloparsec regions of barred disk galaxies due to the action of bars is known as bar quenching. We investigate here the significance of bar quenching in the global quenching ...
  • Silicon depletion in the interstellar medium 
    Haris, U; Parvathi, V. S; Gudennavar, S. B; Bubbly, S. G; Murthy, J; Sofia, U. J (IOP Publishing, 2016-07)
    We report interstellar silicon ( Si ) depletion and dust-phase column densities of Si along 131 Galactic sight lines using archival observations. The data were corrected for differences in the assumed oscillator ...
  • Silver linings in the dark clouds of COVID-19: Improvement of air quality over India and Delhi metropolitan area from measurements and WRF-CHIMERE model simulations 
    Dumka, U. C; Kaskaoutis, D. G; Verma, Shubha; Shantikumar, N. S; Sarvan Kumar; Ghosh, Sanhita (Elsevier B.V., 2021-02)
    The current study examines the impact of the COVID-19 lockdown (25th March until May 17, 2020) period in particulate matter (PM) concentrations and air pollutants (NOx, SO2, CO, NH3, and O3) at 63 stations located at Delhi, ...
  • Similarity solutions for buoyancy induced flows in a saturated porous medium adjacent to impermeable horizontal surfaces 
    Chandrasekhara, B. C; Namboodiri, P. M. S; Hanumanthappa, A. R (Springer, 1984-03)
    In the present paper similarity solutions for the convective flow induced by buoyancy in a saturated porous medium adjacent to horizontal impermeable surfaces are obtained. The analysis incorporates the variation of ...
  • A Simple Digital System Drive for Small Telescopes 
    Bhattacharyya, J. C; Ramamoorthy, K. S; Chandramohan, R (Indian Institute of Astrophysics, Bangalore, 1980)
    A variable stable frequency source employing a crystal oscillator and a programmable digital divider chain is described. The system offers an ideal arrangement for controlling tracking rates of small and medium size ...
  • Simple method of star photography 
    Tomkins (Astronomical Society of India, 1911-03)
  • A simple model for coronal loops and their stability 
    Satya Narayanan, A (European Space Agency, 1999-12)
  • A Simple Radial Gradient Filter for Batch-Processing of Coronagraph Images 
    Patel, Ritesh; Majumdar, Satabdwa; Pant, Vaibhav; Banerjee, D (Springer, 2022-03)
    Images of the extended solar corona, as observed by different white-light coronagraphs, include the K- and F-corona and suffer from a radial variation in intensity. These images require separation of the two coronal ...
  • A simplified ab initio treatment of diradicaloid structures produced from stretching and breaking chemical bonds 
    Sinha Ray, Suvonil; Ghosh, A; Shit, Anindita; Chaudhuri, R. K; Chattopadhyay, S (Royal Society of Chemistry Publishing, 2017-09)
    he present investigation reports on the prospect of usi ng state specific multireference perturbation theory (SSMRPT) with an improved virtual orbital complete ac tive space configuration interaction (IVO-CASCI) reference ...
  • A simplified account of the correlation effects to bond breaking processes: the Brillouin-Wigner perturbation theory using a multireference formulation 
    Manna, S.; Ray, S. S; Chattopadhyay, S; Chaudhuri, R. K (American Institute of Physics, 2019-08-14)
    Adaptation of improved virtual orbital complete active space configuration interaction functions in state-specific multireference perturbation theory motivated by the Brillouin-Wigner perturbation scheme using Moller-Plesset ...
  • Simulating charge transport to understand the spectral response of swept charge devices 
    Athiray, P. S; Sreekumar, P; Narendranath, S; Gow, J. P. D (EDP Sciences, 2015-11)
    Context. Swept Charge Devices (SCD) are novel X-ray detectors optimized for improved spectral performance without any demand for active cooling. The Chandrayaan-1 X-ray Spectrometer (C1XS) experiment onboard the Chandrayaan-1 ...
  • Simulating medium-spectral-resolution exoplanet characterization with SCALES angular/reference differential imaging 
    Desai, Aditi; Sallum, Stephanie E; Banyal, R. K; Batalha, Natalie; Batalha, Natasha; Blake, Geoff; Brandt, Tim; Briesemeister, Zack; Kleer, Katherine de; Pater, Imke de; Eisner, Josh; Fong, Wen-fai; Greene, Tom; Honda, Mitsuhiko; Kain, Isabel; Kilpatrick, Charlie; Lach, Mackenzie; Liu, Mike; Macintosh, Bruce; Martinez, Raquel A; Mawet, Dimitri; Miles, Brittany; Morley, Caroline; Powell, Diana; Sheehan, Patrick; Skemer, Andrew J; Spilker, Justin; Stelter, R. Deno; Stone, Jordan; Surya, Arun; Sivarani, T; Wagner, Kevin; Zhou, Yifan (SPIE-The International Society for Optical Engineering, 2023-10)
    SCALES (Slicer Combined with Array of Lenslets for Exoplanet Spectroscopy) is a 2 - 5 micron high-contrast lenslet-based integral field spectrograph (IFS) designed to characterize exoplanets and their atmospheres. The SCALES ...

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