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Browsing by Author "Srinivasa Rao, M"

Browsing by Author "Srinivasa Rao, M"

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  • A comparative study of finite-difference methods for radiative transfer problems. 
    Mohan Rao, D; Varghese, B. A; Srinivasa Rao, M (Elsevier, 1995-06)
    We have compared the numerical results of two widely used difference methods for the radiative transfer equation in plane-parallel medium. The Discrete Space theory (DS) is based on the direct first-order differential ...
  • Compton Broadening Due To Electron Scattering 
    Peraiah, A; Srinivasa Rao, M (Indian Institute of Astrophysics, Bangalore, 1993)
    We have investigated the effects of Compton broadening due to electron scattering in the hot stellar atmosphere, quasars, AGN's etc. We considered a purely electron scattering media. The Compton effect scattering function ...
  • Discrete Space Theory of Radiative Transfer: Application 
    Srinivasa Rao, M (Springer, 2010)
    The method of obtaining the solution of radiative transfer equation using discrete space theory (DST) is described with (1) interaction principle for different geometries (2) star product (3) calculation of radiation field ...
  • Discrete Space Theory of Radiative Transfer: Applications 
    Srinivasa Rao, M (Astronomical Observatory, Volgina 7, 11160 Beograd, Serbia., 2009)
    A concise description of the method of obtaining the solution of radiative trans- fer equation which can be applied to di®erent geometrical and physical systems is given. This paper mainly deals with the steps for obtaining ...
  • Effects of Aberration and Advection in a Partially Scattering Medium 
    Peraiah, A; Srinivasa Rao, M (Astronomical Society of Indian, 1989-03)
  • Effects of Dust in Distorted, Irradiated, and Expanding Atmospheres of Close Binary Components 
    Srinivasa Rao, M (Astronomical Society of Japan, 2003)
    We studied the transfer of line radiation with dust in distorted and expanding atmospheres of close binary components. We assumed that the distortion of the atmosphere is caused by self rotation and a tidal force exerted ...
  • Effects of dust on the formation of lines in an expanding spherical medium 
    Peraiah, A; Varghese, B. A; Srinivasa Rao, M (The European Southern Observatory, 1987-06)
    A series of line profiles formed in a spherically symmetric and radially expanding atmosphere in which dust is present are computed, assuming that the dust scatters radiation isotropically. Two cases of dust distribution ...
  • Effects of dust scattering in expanding spherical nebulae 
    Srinivasa Rao, M; Sengupta, S (Elsevier B. V., 2004-03)
    The mean intensity of planetary nebulae with an expanding atmosphere is modeled by considering dusty and dust-free atmospheres. The bulk matter density is determined from the adopted velocity field through the equation of ...
  • Effects of velocity laws on line formation 
    Srinivasa Rao, M; Varghese, B. A (Astronomical Society of India, 1993)
    We calculated the spectral line profiles in a spherically symmetric expanding medium. Complete redistribution of photons in the line for a two level atom is assumed with Doppler profile function in a purely scattering ...
  • GSC 2701-2527, A New Multiperiodic High-Amplitude Delta Scuti Variable 
    Kjurkchieva, D. P; Dimitrov, D. P; Ibryamov, S. I.; Srinivasa Rao, M (Astronomical Society of India, 2013-06)
    Our BVI photometric observations reveal that GSC 2701-2527 is a high amplitude ᵟ Scuti star with quite low temperature. The frequency analysis exhibits that it is multiperiodic pulsator. The obtained period ratio f1/ ...
  • Irradiation effects in close binaries in an electron scattering medium 
    Varghese, B. A; Srinivasa Rao, M (Springer, 2016-03)
    In a close binary system, the effects of irradiation are studied from an extended surface of the secondary component on the atmosphere of the primary. Primary and the secondary components are assumed to have equal radii ...
  • Irradiation effects in close binary stars 
    Srinivasa Rao, M; Varghese, B. A (Anita Publications, 2004-12)
    We studied the reflection effect in 2-dimensional geometry to see how the field will change if we calculate the reflected radiation by the transfer equation in a close binary system. The reflected radiation is calculated from ...
  • Light curve analysis of Hipparcos data for the massive O-type eclipsing binary UW CMa 
    Antokhina, E. A; Srinivasa Rao, M; Parthasarathy, M (Elsevier B.V, 2011-04)
    Hipparcos photometric data for the massive O-type binary UW CMa were analysed within the framework of the Roche model. Photometric solutions were obtained for five mass ratios in the q = M2/M1 = 0.5–1.5 range. The system ...
  • Light curve solutions of eclipsing binaries in SMC 
    Ivanov, V. P; Kjurkchieva, D. P; Srinivasa Rao, M (Astronomical Society of India, 2010-09)
    We propose a procedure for light-curve solutions of eclipsing binary stars in the Small Magellanic Cloud (SMC) for which photometric data have been obtained in the framework of the OGLE project. We also present a way of ...
  • Line Profiles in an Expanding Spherical Medium 
    Peraiah, A; Srinivasa Rao, M; Varghese, B. A (Indian Institute of Astrophysics, Bangalore, 1986)
    We have applied the discrete space theory of radiative with the integral operator technique to calculate the spectral line profiles formed in a spherically symmetric expanding stellar atmospheres. We calculated the source ...
  • P Cygni type profiles 
    Peraiah, A; Srinivasa Rao, M (Indian Institute of Astrophysics, Bangalore, 1985-11)
    We have presented a series of P Cygni type profiles of special lines computed by employing different velocity laws of expansion in a spherically atmosphere. A comparison has been made with those of Beals classification. ...
  • Probing TYC 3315-1807-1, An sdB+dM Binary Displaying Strong Period Variation and Reflection Effect 
    Devarapalli, Shanti Priya; Jagirdar, Rukmini; Gundeboina, Vinay Kumar; Thomas, Vineet S; Srinivasa Rao, M (2022-07)
    Subdwarf (sdB) stars include core helium-burning stars with a very thin hydrogen envelope that lies at the blue end of the horizontal branch (or extreme horizontal branch). Among them, short-period sdB binaries especially ...
  • Radiative transfer effects in rotationally distorted stars 
    Srinivasa Rao, M (Royal Astronomical Society, 2005-03)
    A general expression for the gravity darkening of the tidally and non-uniformly rotating Roche components of close binary systems is used to calculate the uniform rotational effects on line profiles in an expanding atmosphere. ...
  • Radiative transfer in the distorted and irradiated atmospheres of close binary components 
    Peraiah, A; Srinivasa Rao, M (EDP Sciences, 2002-07)
    We studied the transfer of line radiation in the distorted and expanding atmospheres of close binary components. We assumed that the distortion of the atmosphere is caused by self rotation and tidal force exerted by the ...
  • Radiative transfer in the dusty, irradiated expanding atmospheres of close binary components 
    Srinivasa Rao, M; Peraiah, A (EDP Sciences, 2000-09)
    We studied the formation of lines in the irradiated expanding dusty atmospheres of the components of close binary systems. We considered a two-level atom approximation in Non-LTE situation with complete redistribution. The ...

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