IIAP Publications: Recent submissions

  • Kink oscillations in the solar corona 
    Satya Narayanan, A; Ramesh, R; Kathiravan, C; Ebenezer, E (Astronomical Society of the Pacific, 2004-12)
    The solar coronal plasma is highly structured in the magnetic field, density and temperature. This plays a crucial role in the theory of MHD oscillations. In this study, we model a coronal loop to be made up of a cylindrical ...
  • Southern hemisphere solar radio heliograph 
    Sawant, H. S; Fernandes, F. C. R; Neri, J. A. C. F; Cecatto, J. R; Faria, C; Stephany, S; Rosa, R. R; Andrade, M. C; Ludke, E; Subramanian, K. R; Ramesh, R; Sundrarajan, M. S; Sankararaman, M. R; Ananthakrishnan, S; Swarup, G; Boas, J. W. V; Botti, L. C. L; Moron, C. E; Saito, J. H; Karlicky, M (European Space Agency, 2002-12)
    The Brazilian Decimetric Array (BDA) is being developed at National Institute for Space Research (INPE) as an international collaborative program. Initially, the BDA will operate in the tuneable frequency range of 1.2-1.7 ...
  • Simulation of multiple aperture synthesis 
    Saha, S. K; Jayarajan, A. P; Rangarajan, K. E; Chatterjee, S (European Space Observatory, 1988)
    In view of the importance of multiple aperture synthesis in optical astronomy, a computer simulation of the same is demonstrated. The fringe patterns obtained through the aperture mask of six and nine holes arranged ...
  • Magnetic flux tubes and activity on the sun 
    Hasan, S. S (Springer, 2003)
    Activity on the Sun is associated with magnetic fields, involving a complex interaction between the field and plasma. In this review I focus on three fundamental aspects of magnetic activity: (a) the generation, storage ...
  • V1647 Orionis 
    Ojha, D. K; Ghosh, S. K; Kaurav, S. S; Bhatt, B. C; Sahu, D. K; Tej, A (International Astronomical Union, 2008-12)
  • Temporal evolution of main sequence dusty disks 
    Puravankara, M; Bhatt, H. C (Kluwer Academic Publishers, 2003)
  • The neutrino magnetic moment in the early universe 
    de Sabbata, V; Sivaram, C (Italian Physical Society, 1990-05)
    The authors consider a spin-torsion coupling for neutrinos in the early universe and show that a neutrino magnetic moment can be present also for zeromass neutrinos. They make an estimate of this induced magnetic moment ...
  • Optical Spectroscopy of GK Persei during outburst and quiescence 
    Kamath, U. S; Anupama, G. C (American Institute of Physics, 2002)
    We present here the optical spectra of Gk Persei obtained during 1995 – 2001. This period includes two dwarf-nova outbursts and the quiescence phases.
  • Wave propagation in multiple flux tubes and chromospheric heating 
    Hasan, S. S; van Ballegooijen, A; Steiner, O (Cambridge University Press, 2008-05)
    This investigation is a continuation of earlier work on the dynamics of the magnetic network. In a previous calculation (Hasan et al. 2005), we examined the response of a single flux tube to transverse motions of its ...
  • On the visual light curve of RT. Eridani 
    Bappu, M. K. V (Indian Academy of Sciences, 1946-07)
  • The dynamics of the quiet solar chromosphere 
    Kalkofen, W; Hasan, S. S; Ulmschneider, P (Cambridge University Press, 2003)
    Wave propagation in the nonmagnetic chromosphere is described for plane and spherical waves, and excitation by means of impulses in small source regions in the photosphere; excitation for flux tube waves in the magnetic ...
  • Calibration on the Sun for stellar magnetic fields 
    Sivaraman, K. R; Bagare, S. P; Gupta, S. S; Kariyappa, R (Springer, 1987-07)
    The intimate association between the surface magnetic fields and the Ca II K-line emission known to exist on the Sun, holds a promise for using this property to detect the presence of global magnetic fields on Sun-like ...
  • Photometry of the solar corona of March 7, 1970 
    Bappu, M. K. V; Bhattacharyya, J. C; Sivaraman, K. R (Indian Academy of Sciences, 1973)
    Isophotes obtained by equidensitometry techniques from four exposures of the March 7, 1970 corona are used for derivation of intensity distributions along the equator, poles, streamers and dark ' gaps ' in the visible ...
  • The effect of colour on the visual observation of long-period variable stars 
    Bappu, M. K. V (Indian Academy of Sciences, 1946-01)
  • Possible proto-planetary nebulae 
    Parthasarathy, M (Cambridge University Press, 1989)
    IRAS data for high-galactic-latitude F supergiants, a few luminous F-G stars, and a few peculiar (forbidden) emission-line stars reveal they have dust shells with characteristics similar to those observed in planetary ...
  • Himalayan sites for astronomical observatories 
    Prabhu, T. P (Astronomical Society of the Pacific, 2008-10)
    The Tibetan plateau to the north of Himalayas is a high-altitude, dry, cold region with low atmospheric aerosols. The highest part of the plateau lies in Changthang Ladakh and Tibet, and has enormous potential for future ...
  • A new normal incidence concave holographic grating mounting 
    Reddy, G. P; Singh, M (Elsevier, 1989-09)
    In this paper we present a new spectrograph for extreme ultraviolet region. It is based on unconventional focussng properties of a concave holographic grating so far unexplored. The theoretical results shows that it will ...
  • The broad-line type ic supernova SN 2007ru: adding to the diversity of type ic supernovae 
    Sahu, D. K; Tanaka, M; Anupama, G. C; Gurugubelli, U. K; Nomoto, K (Institute of Physics, 2009-05)
    Photometric and spectral evolution of the Type Ic supernova SN 2007ru until around 210 days after maximum are presented. The spectra show broad spectral features due to very high expansion velocity, normally seen in ...
  • Double radio peak and non-thermal collimated ejecta in RS Ophiuchi following the 2006 outburst 
    Eyres, S. P. S; O'Brien, T. J; Beswick, R; Muxlow, T. W. B; Anupama, G. C; Kantharia, N. G; Bode, M. F; Gawroński, M. P; Feiler, R; Evans, A; Rushton, M. T; Davis, R. J; Prabhu, T; Porcas, R; Hassall, B. J. M (Blackwell Publishing, 2009-05)
    We report Multi-Element Radio-Linked Interferometer Network, Very Large Array, One-Centimetre Radio Array, Very Long Baseline Array (VLBA), Effelsberg and Giant Metrewave Radio Telescope observations beginning 4.5 days ...
  • The recurrent novae and their relation with classical novae 
    Anupama, G. C (American Institute of Physics, 2002)
    Recurrent novae (RNe) are a subclass of cataclysmic variables classified based on recorded observations of more than one nova outburst. They form a small, but heterogeneous group of objects, with 10 known members, that ...

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