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  • Dwarf cepheid DY Pegasus -- revisited 
    Kilambi, G. C; Rahman, A (Astronomical Society of India, 1993)
    UBV broadband photoelectric photometry of dwarf cepheid DY Pegasus is presented. Using the observed light variations of this pulsating variable, mass, radius, gravity and temperature variations over a pulsational cycle ...
  • Dynamic Loading Assembly for Testing Actuators of Segmented Mirror Telescope 
    Prasanna Deshmukh; Parihar, P. S; Balasubramaniam, K. A; Mishra, Deepta Sundar; Mahesh, P. K (World Scientific Publishing Co., 2017-09)
    Upcoming large telescopes are based on Segmented Mirror Telescope (SMT) technology which uses small hexagonal mirror segments placed side by side to form the large monolithic surface. The segments alignment needs to be ...
  • Dynamic responses of sunspots to their ambient magnetic configuration 
    Bagare, S. P (Cambridge University Press, 2011-08)
    In our earlier study of a revisit of the classic Wilson Effect, it was found that a large proportion of sunspots do not display the geometric effect which is ascribed to a depression of the umbra. It was shown that the ...
  • A Dynamic Sky Simulation for the Scanning Sky Monitor on ASTROSAT 
    Mishra, S. D; Bhattacharya, D (Astronomical Society of India, 2003)
    We have developed a dynamic sky simulation software for the visualization of the operation of the Scanning Sky Monitor cameras. This software can be used for the background modelling of the cameras and the refinement of ...
  • The dynamical behaviour of a jet in an on-disk coronal hole observed with AIA/SDO 
    Chandrashekhar, K; Morton, R. J; Banerjee, D; Gupta, G. R (EDP Sciences, 2014-02)
    Aims. Extreme ultraviolet (EUV) jets situated in coronal holes are thought to play an important role in supplying heated material to the corona and solar wind. The multi-wavelength capabilities and high signal-to-noise ...
  • Dynamical Effects in Solar Photospheric Flux Tubes 
    Hasan, S. S (Kluwer Academic Publisher, 1996)
    The interaction of an intense flux tube, extending vertically through the photosphere, with p-modes in the ambient medium is modelled by solving the time dependent MHD equations in the thin flux tube approximation. It is ...
  • Dynamical effects of a cloud complex on stellar and HI components in a galaxy 
    Jog, C. J; Narayan, C. A (Astronomical Society of India, 2001)
    We investigate the dynamical effects of a molecular cloud complex with a mass ~ 107M? and a size of ~ few 100 pc, on the vertical distribution of stars and HI in a galactic disc. The complex has a strong local confining ...
  • The Dynamical Evolution of a Star Cluster 
    Sunder, G. S; Kochhar, R. K (International Astronomical Union, 1987)
    Using the second order tensor virial equations and the equation for the rate of change of the kinetic energy tensor, the authors follow the dynamical evolution of a star cluster with anisotropic velocity distribution. They ...
  • Dynamical evolution of binary systems 
    Mohammed Alladin, S (Astronomical Society of India, 1990)
    The interaction of binary stars with single stars and the role of binary stars in star clusters are discussed. Some aspects of galaxy interactions are mentioned which can be viewed as analogs of binary-single body encounters ...
  • Dynamical evolution of x-ray bright points with hinode/XRT 
    Kariyappa, R; Varghese, B. A; DeLuca, E. E; van Ballegooijen, A. A (Springer, 2010)
    We analyzed a 7-h long time sequence of soft X-ray images obtained on 14 April 2007 from a quiet region using the X-Ray Telescope (XRT) onboard Hinode. The aim was to observe intensity oscillations in coronal XBPs of ...
  • Dynamical friction and the escape of a compact supermassive object shot from the center of a galaxy 
    Kapoor, R. C (D. Reidel Publishing Company, 1985-12)
    A numerical study has been made of the motion of a compact object consisting of a supermassive black hole with a dense cluster of stars around through a galaxy which has recoiled from the center of the latter as a result ...
  • Dynamical interplay of disc thickness and interstellar gas: Implication for the longevity of spiral density waves 
    Ghosh, S; Jog, Chanda J (EDP Sciences, 2022-02)
    A typical galactic disc has a finite thickness. In addition to stars, it also contains a finite amount of interstellar gas. Here, we investigate the physical impact of the finite thickness of a galactic disc on the disc ...
  • Dynamical modeling of elliptical galaxy NGC 2513 
    Thakur, P; Sahu, D. K; Chakraborty, D. K (Astronomical Society of India, 1999)
    We have analysed the photometric and kinematical data of the elliptical galaxy NGC 2513 to determine its intrinsic structure. For the photometric data we have used our own observations and for the kinematical data we have ...
  • Dynamical phenomena in sunspots. I. Time dependent relaxation to equilibrium 
    Gangadhara, R. T; Hasan, S. S (European Southern Observatory, 1997-11)
    We have adapted a general purpose time-dependent 2-D code to study dynamical phenomena in sunspots. In the first part of our investigation, we numerically simulate the dynamical relaxation to equilibrium of a sunspot. ...
  • Dynamical Processes in Flux Tubes and their Role in Chromospheric Heating 
    Hasan, S. S (Indian Academy of Sciences, 2000-12)
    We model the dynamical interaction between magnetic flux tubes and granules in the solar photosphere which leads to the excitation of transverse (kink) and longitudinal (sausage) tube waves. The investigation is motivated ...
  • Dynamical properties of flare Loops of 27 November 1996 
    Uddin, W; Lalan, P (Astronomical Society of India, 2001)
    We observed a post-flare loop system in Hα on the west limb on 27 November 1996 which started earlier than 05:07:20 UT in NOAA active region 7997 (N04, W89). The post-flare loops were associated with long duration x-ray ...
  • Dynamical properties of quiescent prominence in He D3 5876 Angstrom line emission 
    Prasad, C. D; Ambastha, A; Mathew, S. K (Astronomical Society of India, 1999)
    We have observed a quiescent prominence with the Coude spectrograph of Udaipur Solar Observatory during May 24-25, 1995. Analysis of two dimenstional spectroscopic data was carried out in order to obtain the line shifts ...
  • Dynamical Theory and Tidal Friction 
    Letton, C. T; Lee, W. A., eds. (Astronomical Society of India, 1914)
  • The DynaMICCS perspective. A mission for a complete and continuous view of the Sun dedicated to magnetism, space weather and space climate 
    Turck-Chieze, S; Lamy, P; Carr, C; Carton, P. H; Chevalier, A; Dandouras, I; Defise, J. M; Dewitte, S; Dudok de Wit, T; Halain, J. P; Hasan, S. S; Hochedez, J. F; Horbury, T; Levacher, P; Meissonier, M; Murphy, N; Rochus, P; Ruzmaikin, A; Schmutz, W; Thuillier, G; Vives, S (Springer Netherlands, 2009-03)
    The DynaMICCS mission is designed to probe and understand the dynamics of crucial regions of the Sun that determine solar variability, including the previously unexplored inner core, the radiative/convective zone interface ...
  • Dynamics and heating of the magnetic network on the Sun. Efficiency of mode transformation 
    Hasan, S. S; Ulmschneider, P (EDP Sciences, 2004-12)

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