IIA Institutional Repository: Recent submissions

  • Nuclear-spin-dependent parity-nonconserving transitions in Ba/sup+ and Ra/sup+ 
    Geetha, K. P; Singh, A. D; Das, B. P; Unnikrishnan, C. S (The American Physical Society, 1998-07)
    An experiment to observe parity nonconservation using the \|5p/Sup66s>1/2-->\|5p/Sup65d>3/ 2 transition in Ba/Sup +has been proposed [N. Fortson, Phys. Rev. Lett., 70, 2383 (1993)]. We have carried out relativistic ...
  • Atomic parity non-conservation: present status and future prospects 
    Das, B. P (Indian Academy of Sciences, 1998)
    The general features of parity nonconservation (PNC) in atoms arising from neutral weak currents and the nuclear anapole moment are discussed. The theoretical approaches used to calculate PNC observables are briefly ...
  • A coupled-cluster approach to polarizabilities: Computational aspects 
    Sahoo, B. K; Das, B. P; Chaudhuri, R. K; Mukherjee, D (IOS Press, 2007)
    We present ab initio calculations of both the dipole and quadrupole polarizabilities within the framework of the relativistic coupled-cluster theory. We directly solve the first order perturbed equation arising from a ...
  • Indian Institute of Astrophysics Kodaikanal 
    Bappu, M. K. V (Indian Institute of Astrophysics, 1973)
  • Coronal heating by magnetic kink waves 
    Banerjee, D; Dikpati, M; Choudhuri, A. R (Astronomical Society of the Pacific, 1998)
    We show that the magnetic kink waves generated by the motions of the Photospheric footpoints of the coronal flux tubes can supply adequate energy for heating the quiet corona. We model the solar corona as two-layer isothermal ...
  • Young star clusters of our galaxy and the large magellanic cloud as test for stellar evolutionary models 
    Sagar, R; Subramaniam, A (Universidad Nacional Autonoma de Mexico, 1999)
    A comparison of the colour-magnitude diagrams (CMDs) and the main sequence luminosity function (LF) of five young Galactic star clusters and four young Large Magellanic Cloud star clusters derived from precise CCD observations ...
  • Perturbative calculations of P, T-odd effects in heavy polar diatomic molecules 
    Nayak, M. K; Chaudhuri, R. K (Institute of Physics, 2007-09)
    A fully-relativistic second order many-body perturbation theory (MBPT(2)) is employed to compute the P, T-odd interaction constant Wsub/d of the ground (2sup/Σ/sub1/2) states of YbF and BaF molecules. Since MBPT(2) ...
  • The optical spectrum of RS Ophiuchi 
    Anupama, G. C; Prabhu, P. B (VNU Science Press, 1987)
    The authors present optical Spectrophotometric observations obtained between 1985 February 27 and May 17, following the recent outburst of nova RS Ophiuchi. The photographic spectra cover the region 4300 - 8900 Å, at ...
  • On the survivability of cosmological quark nuggets 
    Bhattacharjee, P (World Scientific, 1994)
    The question of survivability of quark nuggets against the process of baryon evaporation from their surfaces is discussed within the context of a dynamical model, namely, the chromoelectric flux-tube fission model of baryan ...
  • Black holes odyssey 
    Kapoor, R. C (The Hawk, 1979-07-01)
  • Experiments 
    Bhattacharyya, J. C (The Hawk, 1980-06-15)
  • A wonderful eclipse 
    Bok, Bart J (The Hawk, 1980-06-15)
  • The day of the dark Sun 
    Kapoor, R. C (The Hawk, 1980-06-15)
  • Line of sight depth of the large and small magellanic clouds 
    Subramaniam, A; Subramanian, S (Cambridge University Press, 2009-03)
    We used the red clump stars from the Optical Gravitational Lensing Experiment (OGLE II) survey and the Magellanic Cloud Photometric Survey (MCPS), to estimate the line-of-sight depth. The observed dispersion in the magnitude ...
  • Detection of long periodwaves in the polar coronal holes 
    Banerjee, D; O'Shea, E; Doyle, J. G; Poedts, S (European Space Agency, 2004-12)
    We examine long spectral time series of polar coronal holes with the Coronal Diagnostics Spectrometer (CDS) on-board SoHO. Previously, the presence of long period waves in the plumes and inter-plume regions has been reported ...
  • The general trends of recurrent novae 
    Anupama, G. C (Kluwer Academic Publishers, 1995)
    The observational properties of recurrent novae are reviewed in this talk. The class of recurrent novea may be divided into subgroups as (a) systems with a dwarf secondary and (b) systems with a giant secondary. The primary ...
  • Spectroscopic results of the recurrent nova Rs-Ophiuchi 
    Anupama, G. C; Prabhu, T. P (Springer, 1990)
  • Coronal oscillations in the vicinity of a sunspot as observed by GIS/CDS 
    Lin, C. H; Banerjee, D; Doyle, J. G; O'Shea, E (European Space Agency, 2004-12)
    We present the analysis and results of GIS time series observed on 19th July 2003 at the boundary between the quiet Sun and an active region, close to a sunspot. The velocity map of NIS/CDS O v 629 Å show two pairs of red ...
  • One year of monitoring of the 2006 outburst in optical and low radio frequencies 
    Anupama, G. C (Astronomical Society of the Pacific, 2008-12)
    The evolution of the optical spectrum of RS Ophiuchi was monitored beginning 1 day since the 2006 outburst discovery to over a year after the outburst. The evolution of the spectrum is found to be similar to previous ...
  • The recurrent nova class of objects 
    Anupama, G. C (Astronomical Society of the Pacific, 2008)
    Recurrent novae (RNe) form a small, but heterogeneous class of cataclysmic variables that have more than one recorded outburst. There are ten known members of this class, with six short period binaries similar to classical ...

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