IIAP Publications: Recent submissions

  • Historical notes 
    Kochhar, R. K (Indian Academy of Sciences, 1990-05-10)
  • R. LI. Jones-C. V. Raman's physics professor at presidency college Madras 
    Kochhar, R. K (Indian Academy of Sciences, 1990-01-10)
  • Astronomy in British India:Science in the service of the state 
    Kochhar, R. K (Indian Academy of Sciences, 1991-01-25)
  • What's old and what's new about neutrinos 
    Cowsik, R (Indian Academy of Sciences, 1998-09-25)
    To save the laws of conservation of energy, linear and angular momentum, Pauli suggested the possible existence of an elementary particle possessing ito electric charge and very little mass called the neutrino, which was ...
  • HD 77361: a new case of super Li-rich K giant with anomalous low C-12/C-13 ratio 
    Bharat Kumar, Y; Reddy, B. E (The American Astronomical Society, 2009-09)
    Results from high-resolution spectroscopic analysis of HD77361 are reported. LTE analysis shows that HD77361 is a K giant of atmospheric parameters: T-eff = 4580 +/- 75 K, log g = 2.5 +/- 0.1, and xi(t) = 1.40 +/- 0.5 km ...
  • Physics of melts 
    Gaur, V. K (Indian Academy of Sciences, 1997-11-10)
  • Poor science, poor journals 
    Kochhar, R. K (Indian Academy of Sciences, 1990-08-25)
  • The mysterious bar of the large magellanic cloud: what is it? 
    Subramaniam, A; Subramanian, S (Institute of Physics, 2009-09)
    The bar of the Large Magellanic Cloud (LMC) is one of the prominent, but controversial, features regarding its location with respect to the disk of the LMC. In order to study the relative location of the bar with respect ...
  • Probing CP violation with the electric dipole moment of atomic mercury 
    Latha, K. V. P; Angom, D; Das, B. P; Mukherjee, D (The American Physical Society, 2009-08-21)
    The electric dipole moment of atomic Hg-199 induced by the nuclear Schiff moment and the tensor-pseudotensor electron-nucleus interactions are calculated. For this, we develop and employ a novel method based on the ...
  • Theory of polarized scattering in the mixed hanle-zeeman regime 
    Sampoorna, M; Nagendra, K. N; Stenflo, J. O (Astronomical Society of the Pacific, 2009-06)
    We present the theory of polarized partial frequency redistribution (PRD) in the presence of arbitrary magnetic fields. Starting from the classical theory of Bommier & Stenflo (1999) we derive the laboratory frame PRD ...
  • Numerical methods in polarized line formation theory 
    Nagendra, K. N; Sampoorna, M (Astronomical Society of the Pacific, 2009-06)
    We review some numerical methods and provide benchmark solutions for the polarized line formation theory with partial redistribution (PRD) in the presence of magnetic fields. The transfer equation remains non-axisymmetric ...
  • Phase matrices for higher multipoles of scattering in external magnetic fields 
    Oo, Y. Y; San, P. P; Sampoorna, M; Nagendra, K. N; Ramachandran, G (Astronomical Society of the Pacific, 2009-06)
    Scattering phase matrices for forbidden lines are derived, in the presence of an external magnetic field, using the quantum electrodynamical approach. The particular case of 0 -> 2 -> 0 M2 transitions are considered and ...
  • Implications of γ-ray lines observed from the orion complex. II 
    Cowsik, R; Friedlander, W. M (International Union of Pure and Applied Physics, 1995)
    The observation of intense gamma-ray line emission from the Orion complex, attributed by Bloemen et al. to de-excitation of cosmic-ray carbon and oxygen nuclei, has important, implications for emission from Orion in the ...
  • The Himalayan gamma ­ ray observatory at Hanle 
    Koul, R; Kaul, R. K; Mitra, A. K; Rannot, R. C; Acharya, B. S; Chitnis, V. R; Cowsik, R; Prabhu, T. P; Srinivasan, R; Srivatsan, R; Vishwanath, P (Tata Institute of Fundamental Research, 2005)
    A new gamma ray observatory comprising a large stereo imaging cherenkov telescope and an array of wave front sampling telescopes is being set up at the high altitude astronomical site at Hanle in the Ladakh region of ...
  • A possible high altitude high energy gamma ray observatory in India 
    Cowsik, R; Bhat, P. N; Chitnis, V. R; Acharya, B. S; Vishwanath, P. R (Copernicus Gesellschaft, 2001-08)
    Recently an Indian Astronomical Observatory has been set up at Hanle (32° 46 4 6 N , 78° 57 5 1 E , 4515m amsl) situated in the high altitude cold desert in the Himalayas. The Observatory has 2-m aperture optical-infrared ...
  • Spectrum of density fluctuations in the solar wind 
    Krishan, V (World Scientific Publishing Company, 2009)
    The power spectrum of density fluctuations in the solar wind and its relations with the spectra of the velocity and magnetic field fluctuations is investigated. The density fluctuations could behave as a passive scalar and ...
  • Star formation in young cluster NGC 1893 
    Sharma, S; Pandey, A. K; Ojha, D. K; Chen, W. P; Ghosh, S. K; Bhatt, B. C; Maheswar, G; Sagar, R (International Astronomical Union, 2008-05)
    We have carried out a multi-wavelength study of the star forming region NGC 1893 to make a comprehensive exploration of the effects of massive stars on low mass star formation. Using deep optical U BV RI broad band, Hα ...
  • Counterrotating core in the LMC: accretion and or merger 
    Subramaniam, A; Prabhu, T. P (Springer, 2007-05-24)
    The stellar radial velocity in the central region of the Large Magellanic Cloud (LMC) is used to estimate the radial velocity curve along various position angles (PA) including the line of nodes (LON). The central part of ...
  • Progressive prediction of turbulence using wave-front sensor data in adaptive optics using data mining 
    Vyas, A; Roopashree, M. B; Prasad, B. R (Macmillan Publishers India Ltd., 2009)
    Nullifying the servo bandwidth errors improves the strehl ratio by a substantial quantity in adaptive optics systems. An effective method for predicting atmospheric turbulence to reduce servo bandwidth errors in real time ...
  • Denoising Shack Hartmann sensor spot pattern using zernike reconstructor 
    Vyas, A; Roopashree, M. B; Prasad, B. R (Macmillan Publishers India Ltd., 2009)
    Shack Hartmann Sensor (SHS) is inflicted with significant background noise that deteriorates the wave-front reconstruction accuracy. In this paper, a simple method to remove the back ground noise with the use of Zernike ...

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