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Browsing IIAP Publications by Title

Browsing IIAP Publications by Title

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  • Crustal stress patterns: Analysis of Ps splitting for seismic anisotropy 
    Rai, Abhishek; Rai, S. S; Gaur, V. K (Indian Academy of Sciences, 2008-04)
  • Crustal structure and earthquake focal depths beneath northeastern India and southern Tibet 
    Mitra, S; Priestley, K; Bhattacharyya, A. K; Gaur, V. K (Royal Astronomical Society, 2005-01)
    We use broad-band teleseismic data recorded at eight sites along a north-south profile from Karimganj (24.84°N, 92.34°E), south of the eastern Shillong Plateau, to Bomdilla (27.27°N, 92.41°E) in the eastern Lesser Himalaya, ...
  • Crustal structure of the Darjeeling-Sikkim Himalaya and southern Tibet 
    Acton, C. E; Priestley, K; Mitra, S; Gaur, V. K (Wiley Blackwell, 2011-02)
    Analysis of data from nine, temporary broadband seismic stations operated across West Bengal and Sikkim, along with publicly available data from seismographs in the surrounding region, provides the first image of the ...
  • CS Depletion in Prestellar Cores 
    Kim, Shinyoung; Lee, Chang Won; Maheswar, G; Tafalla, Mario; Sohn, Jungjoo; Kim, Gwanjeong; Kim, Mi-Ryang; Archana Soam; Myers, P. C (IOP Publishing, 2020-03-10)
    The CS molecule is known to be adsorbed onto dust in cold and dense conditions, causing it to be significantly depleted in the central region of cores. This study is aimed to investigate the depletion of the CS molecule ...
  • Curiosity, ambition and foolhardiness 
    Krishan, V (Indian Academy of Sciences, 2008)
  • The Curious Case of PDS 11: A Nearby, >10 Myr Old, Classical T Tauri Binary System 
    Mathew, B; Manoj, P; Bhatt, B. C; Sahu, D. K; Maheswar, G; Muneer, S (IOP Publishing, 2017-05)
    We present results of our study of the PDS 11 binary system, which belongs to a rare class of isolated, high Galactic latitude T Tauri stars. Our spectroscopic analysis reveals that PDS 11 is an M2–M2 binary system with ...
  • Current rate of nucleosynthesis and its implications 
    Mallik, D. C. V (Indian Academy of Sciences, 1981-06)
    The current rate of nucleosynthesis in the solar neighbourhood is re-evaluated on the basis of Arnett’s (1978) stellar yields, the mass loss models of Chiosi, Nasi and Sreenivasan (1978) and the initial mass function ...
  • Curvature from spin 
    de Sabbata, V; Sivaram, C (Springer, 1992-12)
    We show that, considering the dislocation defect induced by torsion in spacetime, which behaves like a string with tension, we are lead also to defect angle and then to curvature of spacetime. The space with torsion and ...
  • Curvature, phase space, holography and black hole entropy 
    Sivaram, C; Arun, K (World Scientific Publishing, 2009-12)
    This paper discusses the thermodynamics of a black hole with respect to Hawking radiation and the entropy. We look at a unified picture of black hole entropy and curvature and how this can lead to the usual black hole ...
  • A curved 150 pc long jet in the double-peaked emission-line AGN KISSR 434 
    Kharb, P; Vaddi, Sravani; Sebastian, B; Subramanian, S; Mousumi Das; Paragi, Z (IOP Publishing, 2019-02-01)
    Double-peaked emission lines in the narrow- and/or broad-line spectra of active galactic nuclei (AGNs) have been suggested to arise as a result of disky broad/narrow-line regions, jet–medium interaction, or the presence ...
  • Curvit: An open-source Python package to generate light curves from UVIT data 
    Joseph, P; Stalin, C. S; Tandon, S. N; Ghosh, S. K (Indian Academy of Sciences, 2021-10)
    Curvit is an open-source Python package that facilitates the creation of light curves from the data collected by the Ultra-Violet Imaging Telescope (UVIT) onboard AstroSat, India’s first multi-wavelength astronomical ...
  • Cusps and Distortions in Ionospheric Fl-layer observed over Kodaikanal 
    Sankaran, K. S (Indian Meteorological Department, 1964)
    A special study of cusps and distortions in Fl-layers traces has been made from ionograms obtained at Kodaikanal during a period of about half a solar cycle. Two differnet types of disturbance have been noticed. The first ...
  • Cylindrical Hall – MHD Waves: A Nonlinear Solution 
    Krishan, V; Varghese, B. A (Springer Netherlands, 2008-01)
    The exact nonlinear cylindrical solution for incompressible Hall – magnetohydrodynamic (HMHD) waves, including dissipation, essentially from electron – neutral collisions, is obtained in a uniformly rotating, weakly ionized ...
  • A D. C. Amplifier for Photoelectric Photometry 
    Raveendran, A. V; Mohin, S (Indian Institute of Astrophysics, Bangalore, 1987)
    We describe the construction and discuss the performance of a d.c. amplifier which was installed at the 34-cm telescope of Vainu Bappu Observatory in 1987 January and since then extensively used for variable star photometry.
  • D3 as a dark line in the solar spectrum 
    Smith, C. M (Director Kodaikanal Observatory, 1905-08-05)
  • Daily variation of the equatorial geomagnetic field in the vicinity of the IMF sector boundaries 
    Murthy, B. S (National Institute of Science Communication And Information Resources, 1979-12)
    The response of the equatorial geomagnetic field to the passage of over 170 spacecraft-observed and well-established sector boundaries during the period 1962-1972 has been studied. It is shown from superposed epoch analysis ...
  • Daily variation of total electron content near magnetic equator 
    Sethia, G; Chandra, H; Rastogi, R. G; Murthy, B. S; Shah, G. A; Krishna-Swamy, K. S (Indian Academy of Sciences, 1979-05)
  • Dangerous Face of the Sun 
    Sundararaman, K (NISCAIR-CSIR, India, 2010-11)
    Are we going to be roasted alive by killer solar storms that may arrive during the next solar maximum in 2012? Why and how do these solar flares occur and how do they affect the earth? Read on to find out
  • Dark energy constraints on masses and sizes of large scale cosmic structures 
    Rebecca, L; Arun, K; Sivaram, C (Springer, 2018-07)
    The requirement that their gravitational binding self-energy density must at least equal the background repulsive dark energy density for large scale cosmic structures implies a mass-radius relation of M/R2 ≈ 1 g/cm2, as ...
  • Dark matter (energy) may be indistinguishable from modified gravity (MOND) 
    Sivaram, C (World Scientific Publishing Co Pte Ltd, 2017-10)
    For Newtonian dynamics to hold over galactic scales, large amounts of dark matter (DM) are required which would dominate cosmic structures. Accounting for the strong obser- vational evidence that the universe is accelerating ...

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