IIAP Publications: Recent submissions

  • Development of sunshield panels for passive radiant cooler on board meteorological instruments of ISRO 
    Madhu Prasad; Akkimaradi, B. S; Santram; Selvan, T; Subramanya; Rastogi, S. C; Badrinarayana, K; Bhandari, D. R; Sugumar, M; Mallesh, B; Rajam, K. S; Indira Rajgopalan; Grips, V. K. W; Balaraju, J. N; Saxena, A. K; Ismail Jabilullah, R; Viswanathan, M; Shanbhog, G (2009)
    Radiant cooler is used to cool the infrared and water vapour detectors of meteorological payload. It consists of patch (cold stage) on which detector is mounted, intermediate cooling stage radiator, vacuum housing to enclose ...
  • Solar activity 
    Das, A. K (Royal Astronomical Society, 1956)
  • Annual wave in the world-wide F-region ionization 
    Bhargava, B. N (Manager of Publications Civil Lines Delhi, 1959)
    An analysis of squares of noon median F2 layer critical frequencies for a 3-year period has been made in order to derive the latitude variation of the annual effect in the electron densities and its relation to average F2 ...
  • Wave propagation in the magnetic network on the Sun 
    Hasan, S. S; Vigeesh, G; van Ballegooijen, A. A (Cambridge University Press, 2006)
    Hasan et al. (2005) have recently presented 2-D dynamical calculations on wave propagation in in the magnetic network of the Sun. The latter is idealized as consisting of non-potential flux tubes in the quiet solar ...
  • Wave propagation and energy transport in the magnetic network of the Sun 
    Vigeesh, G; Hasan, S. S; Steiner, O (European Southern Observatory, 2009-12)
    Aims. We investigate wave propagation and energy transport in magnetic elements, which are representatives of small scale magnetic flux concentrations in the magnetic network on the Sun. This is a continuation of earlier ...
  • Alfven waves in a gravitational field with flows 
    Satya Narayanan, A; Kathiravan, C; Ramesh, R (Cambridge University Press, 2009-03)
    The gravitational stratification effect on magnetohydrodynamic waves at a single interface in the solar atmosphere has been studied in the penumbral region of the sunspot recently. The existence of slow and fast magneto ...
  • Sudden commencements and impulses in Kodaikanal magnetograms - their hourly frequency 
    Murthy, B. S (Manager of Publications Civil Lines Delhi, 1959-04)
    The diurnal variation in the frequencies of sudden commencements (SCs) and sudden impulses (SIs) at Kodaikanal (10.2°N, 77.5°E) is analysed from the data for the period 1949-1957. The hourly frequency curve of SCs and SIs ...
  • Processes in the magnetized chromosphere of the Sun 
    Hasan, S. S (Cambridge University Press, 2009-03)
    We review physical processes in magnetized chromospheres on the Sun. In the quiet chromosphere, it is useful to distinguish between the magnetic network on the boundaries of supergranules, where strong magnetic fields are ...
  • Comet Arend-Roland (1956 h) 
    Nedungadi, T. M. K; Narayana, J. V (National Institute of Science Communication And Information Resources, 1957)
  • Observations of spread echoes from the F layer over Kodaikanal-A preliminary study 
    Bhargava, B. N (Manager of Publications Civil Lines Delhi, 1958-01)
    Occurrence of spread F echoes at Kodaikanal for a period of about one year has been analysed and diurnal and seasonal characteristics have been found to exist in the frequency of occurrence of these echoes. It has been ...
  • Temperature of the F region of the ionosphere over Kodaikanal 
    Venugopal, V. R (Manager of Publications Civil Lines Delhi, 1960-04)
    Night temperature of the F region of the ionosphere over Kodaikanal has been computed by the scale height method for the months of June and December. The temperature at a height of 300km is found to be round about 1200°K. ...
  • Ionospheric disturbances associated with magnetic storms at Kodaikanal 
    Bhargava, B. N; Gopala Rao, U. V (Manager of Publications Civil Lines Delhi, 1959-04)
    F2 layer disturbance at Kodaikanal have been analysed for a study of the behaviour of the, critical frequency and the virtual height during geomagnetic storms. The disturbances have been classified for this purpose into ...
  • The diurnal variation of sizes of sudden commencements and impulses in the Kodaikanal magnetograms 
    Murthy, B. S (Manager of Publications, 1960-01)
    Combined data of sudden commencements (SCs) and sudden impulses (SIs) recorded at Kodaikanal (geomagnetic latitude 0.60N) during the period 1949-57 have been analysed in order to study the relationship between the diurnal ...
  • The apparent tripling of certain lines in arc spectra 
    Royds, T (The Royal Society, 1925-02)
  • Ultrahigh energy cosmic rays from topological defects-cosmic strings, monopoles, necklaces, and all that 
    Bhattacharjee, P (American Institute of Physics, 1998-06)
    The topological defect scenario of origin of the observed highest energy cosmic rays is reviewed. Under a variety of circumstances, topological defects formed in the early Universe can be sources of very massive particles ...
  • Viscous damping of Alfven surface waves in the solar atmosphere 
    Rathinavelu, G. D; Sivaraman, M; Narayanan, A. S (MAIK Nauka, 2009-12)
    The dispersion relation for the propagation of viscous Alfven surface waves along viscous plasma plasma interface has been derived. Two modes of Alfven surface waves are found to propagate with their characteristics depend ...
  • Equivalent widths of atomic lines in sunspot spectra 
    Abhyankar, K. D; Ramanathan, A. S (American Astronomical Society, 1955-05)
    Equivalent widths of 82 Cr I lines, 70 Fe 1 lines, and 74 Ti I lines are measured in the spectra of four sunspots of average area 55 millionths of the visible hemisphere of the sun. Separate curves of growth for Cr I, Fe ...
  • Understanding pulsar emission profiles from geometry and rotation effects 
    Thomas, R. M. C; Gupta, Y; Gangadhara, R. T (Astronomical Society of the Pacific, 2009-09)
    We have developed a method to locate the possible emission regions in pulsar magnetospheres, taking into account detailed effects of geometry and rotation of the neutron star. Using curvature radiation formulation, we ...
  • Temporal Evolutions and Quasiperiodic Variations Present in the Sunspot Number and Group Sunspot Area Data Measured at Kodaikanal Observatory for Solar Cycles 14-24 
    Ravindra, B; Chowdhury, Partha; Ray, Pratap Chandra; Pichamani, Kumaravel (American Astronomical Society, 2022-11-20)
    The Kodaikanal Observatory has made synoptic observations of the Sun in white light since 1904, and these images are sketched on the Stonyhurst grids called Sun charts. These continuous hand-drawn data sets are used for ...
  • Anisotropy of the Indian continental lithospheric mantle 
    Heintz, M; Kumar, V. P; Gaur, V. K; Priestley, K; Rai, S. S; Prakasam, K. S (Wiley-Blackwell Publishing, 2009-12)
    Due to the paucity of seismological data available in the public domain, the structure of the Indian lithosphere is still little known. We investigate the lithospheric structure and potential mechanical coupling between ...

Search DSpace


Browse

My Account