IIAP Publications: Recent submissions

  • Photometric distances to dark clouds: cometary globule CG 12 
    Maheswar, G; Manoj, P; Bhatt, H. C (Royal Astronomical Society, 2004-12)
    A method for determining distances to dark clouds and Bok globules based on broad-band optical and near-infrared photometry is presented. In this method, intrinsic colour indices of stars projected towards the direction ...
  • The eccentric double-lined binary BD - 1 deg 1004 
    Kameswara Rao, N; Ashoka, B. N; Lloyd, C; Pike, C. D; Stickland, D. J (Indian Academy of Sciences, 1990-12)
    A new radial velocity study has been made of the highly eccentric, early-type binary BD - 1 deg 1004 using spectra from the Kavalur Observatory. All available archival material has also been reexamined. An attempt has been ...
  • Intense Diffuse Far-Ultraviolet Emission from the Orion Nebula 
    Murthy, J; Sahnow, D. J; Henry, R. C (American Astronomical Society, 2005-01)
    We present spectra of the diffuse far-UV (900-1200 Å) emission from a region near the Orion Nebula: the first high-resolution spectra of the diffuse background radiation. These observations were made using serendipitous ...
  • Propagation and Oscillation of Neutrinos with Magnetic Moment Inside the Sun 
    Sivaram, C (International Astronomical Union, 1990)
    The VVO mechanism suggests that the existence of a neutrino magnetic moment would lead to variations of the observed solar neutrino flux with the magnetic activity of the sun. The MSW mechanism suggests neutrino oscillations ...
  • Study of Sun's "hydromagnetic" Oscillations Using Sunspot Data 
    Gokhale, M. H; Javaraiah, J; Hiremath, K. M (International Astronomical Union, 1990)
    Spherical-harmonic-fourier (SHF) analysis of sun’s ‘nominal toroidal magnetic field’, computed using sunspot data during 1874-1976, shows that sunspot activity can be considered as possibly originating in interference of ...
  • Reddening map of the Large Magellanic Cloud bar region 
    Subramaniam, A (EDP Sciences, 2005-02)
    E(V-I) reddening values for 1123 locations in the bar region of the Large Magellanic Cloud are presented. V, I photometry of red clump stars identified in the Optical Gravitational Lensing Experiment II catalogue of LMC ...
  • Absorption of Electromagnetic Waves in Astrophysical Plasmas 
    Gangadhara, R. T; Krishan, V (International Astronomical Union, 1990)
    We study parametric Decay Instabilities (PDI) using the kinetic description, in the homogeneous and unmagnetic plasmas. These instabilities cause anomalous absorption of the incident electromagnetic (e.m) radiations. The ...
  • 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, ...
  • Kinematics of Vega-like stars: Lifetimes and temporal evolution of circumstellar dust disks 
    Manoj, P; Bhatt, H. C (EDP Sciences, 2005-01)
    We have used the velocity dispersion as an age indicator to constrain the ages of a large sample of main sequence Vega-like stars in order to study the lifetimes and temporal evolution of the dust disks around them. We use ...
  • A time-dependent multistate model for bacteriorhodopsin photocycle 
    Banyal, R. K; Hegde, G. M; Prasad, B. R; Reddy, K. P. J (Elsevier, 2005-02)
    A time-dependent theoretical model based on the rate equations for all the photochemical states of bacteriorhodopsin (bR) is developed. A recursive method is adopted to solve the rate equations exactly, with an explicit ...
  • Density Diagnostics of Solar Emission Lines from the Nitrogen-Like Mgvi Ion 
    Raju, P. K; Vasundhara, R (International Astronomical Union, 1990)
    The variation of theoretical line intensity ratios with electron density for Mg VI ion is presented. This study indicates that the line intensity ratios for Mg VI can be used to infer electron density for solar plasma.
  • Magnetic Helicity of Oscillating Coronal Loops 
    Krishan, V; Priest, E. R (International Astronomical Union, 1990)
  • Centrifugal Acceleration in Pulsar Magnetospheres 
    Thomas, R. M. C; Gangadhara, R. T (International Astronomical Union, 2004)
    We present a relativistic model of pulsar radio emission by plasma accelerated along the rotating magnetic field lines projected on to a 2D plane perpendicular to the rotation axis. We have derived the expression for the ...
  • Faint BVRI Photometric Sequences in Selected Fields 
    Saha, A; Dolphin, A. E; Thim, F; Whitmore, B (The Astronomical Society of the Pacific, 2005-01)
    The results from work done to extend the Johnson-Cousins BVRI photometric standard sequence to faint levels of V~21 mag in compact fields is presented. Such calibration and extension of sequences is necessary to fill a ...
  • Low cost method for subarcsecond testing of a right angle prism 
    Saxena, A. K; Yeswanth, L (SPIE, 1990-12)
    This paper describes a method for testing a right angle prism, or any other optical component having a right angle, to subarcsecond accuracy. The method makes use of Haidinger fringes and is simple to use. Unlike autocollimation ...
  • Lithium and Rotation in Pop I stars 
    Mallik, S. G. V (Cambridge University Press, 2004)
    Lithium abundances have been determined for 130 stars sampled on the basis that they have just about completed depletion of Li on the main sequence and have not yet begun their ascent on the red giant branch. The ...
  • On the Location of Footpoints of Sub-Arc Magnetic Structures in the Quiet Solar Photosphere 
    Sivaraman, K. R; Bagare, S. P; November, L. J (International Astronomical Union, 1990)
  • A Search for Rotationally Modulated Hα Variability in OB Supergiants 
    Morel, T; Marchenko, S. V; Pati, A. K; Kuppuswamy, K; Carini, M. T; Wood, E; Zimmerman, R (Cambridge University Press, 2004)
  • Stellar contents of two young open clusters: NGC 663 and 654 
    Pandey, A. K; Upadhyay, K; Ogura, K; Sagar, R; Mohan, V; Mito, H; Bhatt, H. C; Bhatt, B. C (Royal Astronomical Society, 2005-04)
    UBVRI CCD photometry in a wide field around two young open clusters, NGC 663 and 654, has been carried out. Hα and polarimetric observations for the cluster NGC 654 have also been obtained. We use the photometric data to ...
  • Reception of Radio Waves from Pulsars 
    Gangadhara, R. T (International Astronomical Union, 2004)
    The beamed emission by relativistic sources moving along the magnetic dipolar field lines occurs in the direction of tangents to the field lines. To receive such a beamed radiation, the line of sight must align with the ...

Search DSpace


Browse

My Account