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Browsing IIAP Publications by Title

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  • Electric Quadrupole Moments of the D States of Alkaline-Earth-Metal Ions 
    Sur, C; Latha, K. V. P; Sahoo, B. K; Chaudhuri, R. K; Das, B. P; Mukherjee, D (The American Physical Society, 2006-05)
    The electric quadrupole moment for the 4dD5/22 state of Sr+88; one of the most important candidates for an optical clock, has been calculated using the relativistic coupled-cluster theory. This is the first application of ...
  • Electromagnetic properties of neutral and charged spin-1 particles 
    Nieves, J. F; Pal, P. B (The American Physical Society, 1997-03)
    The structure of the electromagnetic vertex of spin-1 particles is studied in a general way, for the diagonal as well as the off-diagonal couplings. In each case, we consider in detail the consequences of gauge invariance ...
  • Electromagnetic radiation in a helical magnetic field 
    Krishan, V (1984)
    Electromagnetic radiation spectrum is studied in a helical magnetic field since such magnetic field configurations may be present in cosmic objects. It is shown that, by a proper choice of the spatial period of the magnetic ...
  • Electron acceleration in a post-flare decimetric continuum source 
    Subramanian, P; White, S. M; Karlický, M; Sych, R; Sawant, H. S; Ananthakrishnan, S (EDP Sciences, 2007-06)
    Aims.To calculate the power budget for electron acceleration and the efficiency of the plasma emission mechanism in a post-flare decimetric continuum source. Methods.We have imaged a high brightness temperature ($\sim ...
  • Electron Cooling in a Young Radio Supernova: SN 2012aw 
    Yadav, N; Ray, A; Chakraborti, S; Stockdale, C; Chandra, P; Smith, R; Roy, R; Bose, S; Dwarkadas, V; Sutaria, F. K; Pooley, D (IOP Publishing, 2014-02-10)
    We present the radio observations and modeling of an optically bright Type II-P supernova (SN), SN 2012aw which exploded in the nearby galaxy Messier 95 (M95) at a distance of 10 Mpc. The spectral index values calculated ...
  • Electron correlation effects in hyperfine interactions in 45/SupSc and 89/SupY 
    Sahoo, B. K; Beier, T; Das, B. P; Chaudhuri, R. K; Mukherjee, D (Institute of Physics, 2005-12)
    Relativistic coupled-cluster theory has been employed to calculate the magnetic dipole and electric quadrupole hyperfine structure constants for the stable isotopes 45/supSc and 89/supY. The results are in good agreement ...
  • The electron electric dipole moment enhancement factors of Rubidium and Cesium atoms 
    Nataraj, H. S; Sahoo, B. K; Das, B. P; Chaudhuri, R. K; Mukherjee, D (2007-07-27)
    The enhancement factors of the electric dipole moment (EDM) of the ground states of two paramagnetic atoms; rubidium (Rb) and caesium (Cs) which are sensitive to the electron EDM are computed using the relativistic ...
  • Electron impact polarization of resonance lines from Li-like ions 
    Chandra, Suresh (Indian Institute of Astrophysics, Bangalore, 1988)
  • Electron Scattering Redistribution Effect on Atomic Line Polarization 
    Supriya, H. D; Nagendra, K. N; Ravindra, B; Sampoorna, M (Astronomical Society of the Pacific, 2014-10)
    The scattering of line photons on free electrons modifies the polarization of the atomic spectral lines. Hence it is important to treat scattering by electrons as a redistribution process and to study in detail its effect ...
  • The electronic band spectrum of Cal in the red region 
    Rao, M. L. P; Rao, D. V. K; Rao, P. T; Murthy, P. S (Polish Academy of Sciences, 1978-02)
  • Electronic structure of the calcium monohydroxide radical 
    Taylor, C. M; Chaudhuri, R. K; Freed, K. F (American Institute of Physics, 2005-01)
    Effective valence shell Hamiltonian H/supv calculations are used to map out three-dimensional potential energy surfaces for the 12 lowest electronic states of the CaOH radical. Excitation energies and spectroscopic constants ...
  • Electronic structure reference calculations for designing and interpreting P and T violation experiments 
    Nayak, M. K; Chaudhuri, R. K (John Wiley & Sons Inc.,, 2008)
  • Electronic transitions of aluminium monoxide. 
    Murty, P. S (North Holland Publishing Company, 1978-04)
    In view of the renewed interest in the electronic spectra of the AlO molecule, which is of both astrophysical and aeronomical interest, a systematic analysis of the available spectral data is carried out. A valid and ...
  • Electrostatic oscillations in the presence of grain-charge perturbations in dusty plasmas 
    Varma, R. K; Shukla, P. K; Krishan, V (The American Physical Society, 1993-05)
    The properties of electrostatic oscillations and instability phenomena are studied, accounting for the time-dependent variation of the grain electric charge due to wave motions in an unmagnetized dusty plasma. It is found ...
  • Elemental abundance survey of the galactic thick disc 
    Reddy, B. E; Lambert, D. L; Prieto, Carlos Allende (Blackwell Publishing, 2006-04)
    We have performed an abundance analysis for F- and G- dwarfs of the Galactic thick-disc component. A sample of 176 nearby (d≤ 150 pc) thick-disc candidate stars was chosen from the Hipparcos catalogue and subjected to a ...
  • Elemental Abundances and Atmospheric Parameters of Seven F-G Supergiants 
    Giridhar, S; Ferro, A; Parrao, L (Astronomical Society of the Pacific, 1997-10)
    Spectroscopic abundance determinations for a sample of seven F-G stars have been carried out. The majority of them have large galactic latitudes. One objective in deriving spectroscopic abundances is to differentiate evolved ...
  • Elemental abundances in CEMP stars: r– and s–process elements 
    Goswami, A; Athiray, S. P; Drisya, K (Springer, 2010)
    A number of Carbon-Enhanced Metal-poor (CEMP) stars are known to exhibit enhancement of both r – and s – process elements. An understanding of the relative contributions from r – and s – process would provide insight into ...
  • Elemental abundances in the solar corona as measured by the X-ray solar monitor onboard Chandrayaan-1 
    Narendranath, S; Sreekumar, P; Alha, L; Sankarasubramanian, K; Huovelin, J; Athiray, P. S (Springer, 2014-05)
    The X-ray Solar Monitor (XSM) on the Indian lunar mission Chandrayaan-1 was flown to complement lunar elemental abundance studies by the X-ray fluorescence experiment C1XS. XSM measured the ≈ 1.8 – 20 keV solar X-ray ...
  • The eleventh and twelfth data releases of the sloan digital sky survey: final data from SDSS-III 
    Alam, S; Albareti, F. D; Prieto, C. A; Anders, F; Anderson, S. F; Anderton, T; Andrews, B. H; Armengaud, E; Aubourg, E; Bailey, S; Basu, S; Bautista, J. E; Beaton, R. L; Beers, T. C; Bender, C. F; Berlind, A. A; Beutler, F; Bhardwaj, V; Bird, J. C; Bizyaev, D; Blake, C. H; Blanton, M. R; Blomqvist, M; Bochanski, J. J; Bolton, A. S; Bovy, J; Bradley, A. S; Brandt, W. N; Brauer, D. E; Brinkmann, J; Brown, P. J; Brownstein, J. R; Burden, A; Burtin, E; Busca, N. G; Cai, Z; Capozzi, D; Rosell, A. C; Carr, M. A; Carrera, R; Chambers, K. C; Chaplin, W. J; Chen, Y-C; Chiappini, C; Chojnowski, S. D; Chuang, C-H; Clerc, N; Comparat, J; Covey, K; Croft, R. A. C; Cuesta, A. J; Cunha, K; da Costa, L. N; Da Rio, N; Davenport, J. R. A; Dawson, K. S; De Lee, N; Delubac, T; Deshpande, R; Dhital, S; Dutra-Ferreira, L; Dwelly, T; Ealet, A; Ebelke, G. L; Edmondson, E. M; Eisenstein, D. J; and 237 coauthors; Sivarani, T (IOP Publishing, 2015-07-20)
    The third generation of the Sloan Digital Sky Survey (SDSS-III) took data from 2008 to 2014 using the original SDSS wide-field imager, the original and an upgraded multi-object fiber-fed optical spectrograph, a new ...
  • Ellipsometry of Coelostat Coatings Using a Babinet Compensator: Simulation of the Experimental Accuracy 
    Sankarasubramanian, K; Venkatakrishnan, P (Kluwer Academic Publishers, 1996-08)
    The precise measurement of solar magnetic fields requires an accurate measurement of the Muller matrix of the optical components in the path of the light beam, which again requires a careful measurement of the optical ...

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