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Browsing IIAP Publications by Title

Browsing IIAP Publications by Title

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  • Stochastic polarized line formation: I Zeeman propagation matrix in a random magnetic field 
    Frisch, H; Sampoorna, M; Nagendra, K. N (EDP Sciences, 2006-07)
    This paper considers the effect of a random magnetic field on Zeeman line transfer, assuming that the scales of fluctuations of the random field are much smaller than photon mean free paths associated to the line formation ...
  • Stokes Diagnostics of Magneto-Acoustic Wave Propagation in the Magnetic Network on the Sun 
    Vigeesh, G; Steiner, O; Hasan, S. S (Springer, 2011-10)
    The solar atmosphere is magnetically structured and highly dynamic. Owing to the dynamic nature of the regions in which the magnetic structures exist, waves can be excited in them. Numerical investigations of wave propagation ...
  • Stone Inscriptions on Eclipses in Karnataka 
    Shylaja, B. S; Murthy, Chidananda. M (Indian Institute of Astrophysics, Bangalore, 1997)
    The solar and lunar eclipses have been documented on stone inscriptions in various parts of Karnataka, from the 9th century onwards. The records testify the knowledge of positional astronomy and also the cultural and ...
  • Storing light in active optical waveguides with single-negative materials 
    Lu, W. T; Huang, Y. J; Casse, B. D. F; Banyal, R. K; Sridharb, S (American Institute of Physics, 2010-05-24)
    We show that a nonresonant planar waveguide consisting of conventional dielectric cladded with single-negative materials supports degenerate propagating modes for which the group velocity and total energy flow can be zero ...
  • Straightforward inversion of MT data using a normalized impedance function 
    Sri Niwas; Gupta, P. K; Gaur, V. K (Society of Exploration Geophysicists, 2007)
    We present a new algorithm for 1D magnetotelluric (MT) data inversion. It inverts a normalized impedance response function derived from the classical Cagniard impedance function. The scheme transforms the nonlinear problem ...
  • The strange case of SN 2011ja and its host 
    Chakraborti, S; Ray, A; Smith, R; Ryder, S; Yadav, N; Sutaria, F. K; Dwarkadas, V. V; Chandra, P; Pooley, D; Roy, R (Cambridge University Press, 2014-01)
    SN 2001ja was observed twice in three months using the Chandra X-Ray Observatory. The X-ray flux could be due to interaction with the circumstellar medium, perhaps dominated by the reverse shock heated thermal plasma, or ...
  • Strength of the Solar Coronal Magnetic Field A Comparison of Independent Estimates Using Contemporaneous Radio and White-Light Observations 
    Anshu Kumari; Ramesh, R; Kathiravan, C; Wang, T. J (Springer, 2017-11)
    Abstract We estimated the coronal magnetic field strength (B) during the 23 July 2016 coronal mass ejection (CME) event using i) the flux rope structure of the CME in the whitelight coronagraph images and ii) the ...
  • String tension and fundamental constants in the early universe 
    Sivaram, C (Springer, 1990-05)
    An energy-dependent string tension could be connected to the fundamental physical and coupling constants. The role of Weyl gravity for sub-Planckian as well as macroscopic domains is explored and the existence of a hierarchy ...
  • Strong (f) gravity, Dirac's large numbers hypothesis and the early hadron era of the big-bang universe 
    Sivaram, C; Sinha, K. P (Indian Institution Science, 1975-05)
  • Strong Gravity and Strings 
    Sivaram, C; de Sabbata, V (Wiley InterScience, 1991)
  • Strong Gravity Approach to QCD and Confinement 
    Salam, A; Sivaram, C (World Scientific Publishing, 1993-02)
    A Weyl type of action which is scale free and quadratic in the curvature is suggested for strong gravity. The corresponding field equations have solutions which imply confinement. At the QCD scale, the scale invariance is ...
  • Strong gravity as the connecting link underlying universal relations between angular momenta of celestial bodies and spin of elementary particles 
    de Sabbata, V; Sivaram, C (Springer, 1988-12)
    Empirical relations between the angular momenta of a wide range of celestial bodies as well as relations between masses and spins of hadrons are shown to have the same fundamental basis with strong gravity as the underlying ...
  • Strong gravity, black holes, and hadrons 
    Sivaram, C; Sinha, K. P (American Physical Society, 1977-09)
    Certain similarities and analogies between the properties of black holes and elementary particles are considered in the framework of the strong gravitational field. Properties examined include measurable parameters (mass, ...
  • Strong lens time delay challenge. II. results of TDC1 
    Liao, K; Treu, T; Marshall, P; Fassnacht, C. D; Rumbaugh, N; Dobler, G; Aghamousa, A; Bonvin, V; Courbin, F; Hojjati, A; Jackson, N; Kashyap, V; Rathna Kumar, S; Linder, Eric; Mandel, Kaisey; Meng, Xiao-Li; Meylan, G; Moustakas, L. A; Prabhu, T. P; Romero-Wolf, A; Shafieloo, A; Siemiginowska, A; Stalin, C. S; Tak, H; Tewes, M; van Dyk, D (IOP Publishing, 2015-02-20)
    We present the results of the first strong lens time delay challenge. The motivation, experimental design, and entry level challenge are described in a companion paper. This paper presents the main challenge, TDC1, which ...
  • Strong near-infrared carbon in the type Ia supernova iPTF13ebh 
    Hsiao, E. Y; Burns, C. R; Contreras, C; Hoflich, P; Sand, D; Marion, G. H; Phillips, M. M; Stritzinger, M; Gonzalez-Gaitan, S; Mason, R. E; Folatelli, G; Parent, E; Gall, C; Amanullah, R; Anupama, G. C; Arcavi, I; Banerjee, D. P. K; Beletsky, Y; Blanc, G. A; Bloom, J. S; Brown, P. J; Campillay, A; Cao, Y; De Cia, A; Diamond, T; Freedman, W. L; Gonzalez, C; Goobar, A; Holmbo, S; Howell, D. A; Johansson, J; Kasliwal, M. M; Kirshner, R. P; Krisciunas, K; Kulkarni, S. R; Maguire, K; Milne, P. A; Morrell, N; Nugent, P. E; Ofek, E. O; Osip, D; Palunas, P; Perley, D. A; Persson, S. E; Piro, A. L; Rabus, M; Roth, M; Schiefelbein, J. M; Srivastav, S; Sullivan, M; Suntzeff, N. B; Surace, J; Wozniak, P. R; Yaron, O (EDP Sciences, 2015-06)
    We present near-infrared (NIR) time-series spectroscopy, as well as complementary ultraviolet (UV), optical, and NIR data, of the Type Ia supernova (SN Ia) iPTF13ebh, which was discovered within two days from the estimated ...
  • Strong nonlocality variations in a spherical mean-field dynamo 
    Brandenburg, Axel; Chatterjee, Piyali (WILEY-VCH Verlag GmbH & Co., 2018-02)
    To explain the large-scale magnetic field of the sun and other bodies, the mean-field dynamo theory is commonly applied, where one solves the averaged equations for the mean magnetic field. However, the standard approach ...
  • Strong spin-torsion interaction between spinning protons 
    de Sabbata, V; Sivaram, C (Italian Physical Society, 1989-02)
    We consider the presence of the spin-torsion strong interaction in the proton-proton scattering at several GeV with the aim to see its significance in the anomalous behaviour shown by the scattering cross-section of polarized ...
  • Strong spin-two interaction and general relativity 
    Sivaram, C; Sinha, K. P (Elsevier, 1979-03)
    The concept of short range strong spin-two (f) field (mediated by massive f-mesons) and interacting directly with hadrons was introduced along with the infinite range (g) field in early seventies. In the present review of ...
  • Strong-CP question in SU(3)c×SU(3)L×U(1)N models 
    Palash, B. Pal (The American Physical Society, 1995-08)
    We analyze two recent models based on the gauge group SU(3)c×SU(3)L×U(1)N where each generation is not anomaly-free but the anomaly cancels when three generations are taken into account. We show that the most general Yukawa ...

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