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Browsing IIAP Publications by Title

Browsing IIAP Publications by Title

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  • Couto, G. S; Storchi-Bergmann, T; Robinson, A; Riffel, R. A; Kharb, P; Lena, D; Schnorr-Muller, A (Oxford University Press on behalf of the Royal Astronomical Society, 2016-06)
    We present optical integral field spectroscopy of the inner 2.5 × 3.4 kpc2 of the broad-line radio galaxy Pictor A, at a spatial resolution of ≈400 pc. Line emission is observed over the whole field of view, being strongest ...
  • Peraiah, A (Indian Institute of Astrophysics, Bangalore, 1986-05)
    We present details of a new technique of obtaining a numerical solution of the radiative transfer equation in spherical symmetry in a polychromatic system. We employed the integral operators together with an interpolation ...
  • Pandey, A. K; Bhatt, B. C; Mahra, H. S; Sagar, R (Royal Astronomical Society, 1989-01)
    Integrated magnitudes and colors of population I synthetic clusters have been derived using theoretical evolutionary tracks and an age-dependednt initial mass function. A comparison of the theoretically obtained integrated ...
  • Lata, S; Pandey, A. K; Sagar, R; Mohan, V (E D P Sciences, 2002-06)
    Integrated UBVRI photometric parameters of 140 galactic open clusters have been computed. Integrated I(V-R)0 and I(V-I)0 colours as well as integrated parameters for 71 star clusters have been obtained for the first time. ...
  • 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 ...
  • Hasan, S. S (Anita Publications, 2005)
  • Chinnappan, V; Saha, S. K; Faseehana (Indian Institute of Astrophysics, Bangalore, 1991)
    For successful observations in any telescope, guiding becomes important. On 2.34 m Telescope at Vainu Bappu Observatory, Kavalur, a remote guiding system is assembled using Intensified CCD camera and a PC based image ...
  • Millar, David C. L; Fletcher, Lyndsay; Joshi, Jayant (Oxford University Press on behalf of Royal Astronomical Society, 2024-01)
    Chromospheric oscillations can give us insight into the physical environment in the solar atmosphere, both in quiet Sun and flaring conditions. Many authors have reported increases in the prevalence of 3-minute oscillations ...
  • Raju, K. P (Springer, 2010-03)
    Intensity distributions of the EUV network and the cell interior in the solar atmosphere have been obtained in fourteen emission lines from Solar and Heliospheric Observatory (SOHO)/Coronal Diagnostic Spectrometer (CDS) ...
  • Bagare, S. P; Murthy, N. S (Indian Academy of Sciences, 1982-11)
    The integrated intensities of a few bands in the vibrational structure of the astrophysically significant ‘orange’ system of the molecule yttrium monoxide, have been measured experimentally by the technique of photographic ...
  • Sivaraman, K. R; Venkitachalam, P. P (Indian Institute of Astrophysics, Bangalore, 1977)
    High resoulution spectrograms of the Balmer lines obtained at five positions from the centres to the limb have been used to study the r. m. s. intensity fluctuations and their dependence on the heliocentric angle. The ...
  • Shelke, R. N; Ingole, V. T (Indian Institute of Astrophysics, 1997)
    Intensity fluctuations of shadow bands during total solar eclipse of October 24, 1995 were recorded on magnetic tape using cross - shaped array of sixteen photo detectors at Nim Ka Thana. The plane of the array was placed ...
  • Bappu, M. K. V (IETE, 1964)
    Spectra of the H-alpha line obtained with high dispersion and high spatial resolution are used to study some of the characteristics of chromospheric mottling on the solar disk. The fluctuations in intensity, indicated by ...
  • Singh, J; Hasan, S. S; Gupta, G. R; Banerjee, D; Muneer, S; Raju, K. P; Bagare, S. P; Srinivasan, R (Springer, 2009-11)
    We obtained the images of the eastern part of the solar corona in the Fe xiv 530.3 nm (green) and Fe x 637.4 nm (red) coronal emission lines during the total solar eclipse of 29 March 2006 at Manavgat, Antalya, Turkey. ...
  • Kariyappa, R; Varghese, B. A (EDP Sciences, 2008-07)
    Aims. Our aim is to investigate the intensity oscillations in coronal X-ray Bright Points (XBPs). Methods. We analysed a 7 h long time sequence of the soft X-ray images obtained on April 14, 2007 with a 2 min cadence using ...
  • Kariyappa, R (Springer, 1994-09)
    From a 35-min time series of photographic spectra in the Ca II H-line obtained at the Vacuum Tower Telescope (VTT) of the Sacramento Peak Observatory under high spatial, spectral, and temporal resolution, we have derived ...
  • Chatterjee, S; Vani, V. C; Banyal, R. K (Optical Society of America, 2013-08-20)
    We present in this paper, approximate analytical expressions for the intensity of light scattered by a rough surface, whose elevation ξ x; y in the z-direction is a zero mean stationary Gaussian random variable. With ...
  • Ananthakrishnan, R (Nature Publishing Group, 1951-08)
    The most conspicuous and readily observed feature of a normal sunspot is a dark central umbra surrounded by a less dark penumbral fringe which, under good seeing conditions, appears to be composed of converging filaments ...
  • Roopashree, M. B; Vyas, A; Prasad, B. R (American Institute of Physics, 2011-10)
    The frames captured with a compact, high-resolution, monochrome progressive scan CCD camera, of a continuous facesheet microelectromechanical systems (MEMS) deformable mirror (DM), include unwanted diffractive, background ...
  • Sastri, J. H (European Geophysical Society, 1980)

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