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  • Polarization Asymmetry in CSS Sources 
    Saikia, D. J; Gupta, N (Astronomical Society of India, 2003)
    We show that the compact steep spectrum sources are more asymmetric in the polarization of the outer lobes compared with the more extended ones. This could be due to interaction of the jets with infalling material, which ...
  • Polarization Changes of Radiation through Stimulated Raman Scattering 
    Gangadhara, R. T; Krishan, V (The American Astronomical Society, 1993-10)
    We study change in the polarization of electromagnetic waves due to the stimulated Raman scattering in a plasma. In this process an electromagnetic wave undergoes coherent scattering off an electron plasma wave. It is found ...
  • Polarization in binaries 
    Barman, S. K; Peraiah, A (Astronomical Society of India, 1991)
    Theoretical models are computed for estimating linear polarization from the extended dusty outer layers of the components of a close binary system whose surfaces are distorted by rotation and mutual tidal effects. ...
  • Polarization line radiative transfer in the atmospheres of magnetic white dwarfs 
    Nagendra, K. N (Akademie verlag GmbH, 1987)
    Some physical mechanisms which can affect the Zeeman line profiles of magnetic white dwarfs are studied. The pure absorption polarization transfer equation is solved including these mechanisms. The broadening of lines in ...
  • Polarization Maps for the Dark Clouds B:227 and L:121 
    Bhatt, H. C; Jain, S. K (European Southern Observatory, 1993-09)
    Optical linear polarization measurements for stars in the regions of the molecular clouds B 227 and L 121 are presented. The magnetic field geometry in the clouds as indicated by the polarization maps is discussed in ...
  • Polarization Measurements of Post-Asymptotic Giant Branch Candidates and Related Stars 
    Parthasarathy, M; Jain, S. K; Sarkar, G (The American Astronomical Society, 2005-05)
    We have obtained UBVRI polarization measurements of 26 post-asymptotic giant branch (post-AGB) candidates and related stars. The extremely metal-poor post-AGB star HR 4049 has been observed several times. In most cases we ...
  • Polarization Measurements of Selected Young Stars with Circumstellar Dusty Disks 
    Parthasarathy, M; Jain, S. K (American Astronomical Society, 2021-09)
    BVRI polarization measurements of 14 selected young stars with circumstellar dust disks are presented. The interstellar polarization in the direction of these stars is not significant. The observed polarization data and ...
  • Polarization Measurements of Some Herbig Ae / Be-Stars 
    Jain, S. K; Bhatt, H. C; Sagar, R (International Astronomical Union, 1990)
    We have measured the linear polarization of 8 bright Herbing Ae/ Be starsin UBVRI bands. No unique wavelength dependence of magnitude as well as direction is found on these measurements.
  • Polarization measurements of stars in the region of the nearby molecular cloud MBM 12 
    Bhatt, H. C; Jain, S. K (Blackwell Publishing, 1992-07)
    Linear polarization measurements of stars in the region of the nearby high-latitude molecular cloud MBM 12 are presented. Stars behind the cloud show a polarization of about 2-3 percent, while stars that are in front of ...
  • Polarization measurements of the luminous blue variable HR Carinae 
    Parthasarathy, M; Jain, S. K; Bhatt, H. C (European Southern Observatory, 2000-03)
    We have made BVRI polarization measurements of HR Car on ten occasions during the period JD 2447919 to JD 2449014. All our observations are on the rising part of the light curve. We find the presence of intrinsic variable ...
  • Polarization measurements of Vega-like stars 
    Bhatt, H. C; Manoj, P (European Southern Observatory, 2000-10)
    Optical linear polarization measurements are presented for about 30 Vega-like stars. These are then compared with the polarization observed for normal field stars. A significant fraction of the Vega-like stars are found ...
  • Polarization measures of Comet Arend-Roland (1956h) and Comet Mrkos (1957d) 
    Bappu, M. K. V; Sinvhal, S. D (Royal Astronomical Society, 1960)
  • Polarization Observations of a Split-band Type II Radio Burst from the Solar Corona 
    Ramesh, R; Kathiravan, C (American Astronomical Society, 2022-11-20)
    Using temporal observations of circular polarized harmonic plasma emission from a split-band type II solar radio burst at 80 MHz, we separately estimated the coronal magnetic field strengths (B) associated with the lower ...
  • Polarization of coherent curvature radiation in pulsars 
    Thomas, R. M. C; Gangadhara, R. T (Springer Netherlands, 2008)
    We consider the coherent curvature radiation by relativistic plasma in pulsar magnetosphere. The radiation emitted by relativistic particle bunches is beamed in the direction of field line tangents. For the first time, we ...
  • Polarization of Comet Arend-Roland 
    Bappu, M. K. V; Sinvhal, S. D (Nature Publishing Group, 1957-12)
  • Polarization of continuum radiation in magnetic atmospheres 
    Nagendra, K. N; Peraiah, A (Kluwer Academic Publishers, 1984-09)
    A numerical solution is presented for the problem of continuum radiative transfer in a magnetoactive medium. The continuum opacities are calculated in the presence of a strong magnetic field (H = 10 MG) typical of magnetic ...
  • Polarization of L Dwarfs by Dust Scattering 
    Sengupta, S; Kwok, S (The American Astronomical Society, 2005-06)
    The degree of polarization in L dwarfs of spectral types L0-L6 resulting from dust scattering in a rotation-induced oblate photosphere is calculated. Assuming that forsterite is the main condensate, we derive the atmospheric ...
  • Polarization of line radiation in the presence of external electric quadrupole and uniform magnetic fields 
    Oo, Y. Y; Nagendra, K. N; Ananthamurthy, S; Vijayashankar, R; Ramachandran, G (Elsevier B.V., 2004-02)
    The polarization of emission lines formed in a medium immersed in external electric and magnetic fields is studied. The electric field is assumed to be quadrupolar in nature, while the magnetic field is uniform. We show ...
  • Polarization of line radiation in the presence of external electric quadrupole and uniform magnetic fields: II. Arbitrary orientation of magnetic field 
    Oo, Y. Y; Nagendra, K. N; Ananthamurthy, S; Sirsi, S; Vijayashanka, R; Ramachandran, G (Elsevier B.V., 2005-02)
    In continuation of our earlier investigation (referred to hereafter as part I) where we considered the mathematically simple case of magnetic field orientation along the Z-axis of the principal axes frame (PAF) of the ...
  • Polarization of resonance lines formed in extended spherical atmospheres 
    Nagendra, K. N (Kluwer Academic Publishers, 1989-04)
    The present consideration of the polarization problem posed by resonance lines in extended spherical atmospheres assumes that the atmosphere in question is at rest and emphasizes the determination of constraints that can ...

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