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  • Pressure in the reversing layer 
    Evershed, John (Taylor and Francis, 1909-09)
  • Pressure induced incommensurate to commensurate transition in K3Cu8S6 
    Raghu, M; Subramanyam, S. V; Chatterjee, S (Springer, 1989-03)
    To study the effect of hydrostatic pressure on the incommensurate lattice modulation at 153 K in K3Cu8S6, electrical resistivity measurements are done at 1.0 GPa, 1.5 GPa and 2.2 GPa. The sharp increase in resistance at ...
  • Pressure structure of solar coronal loops. III 
    Sreedharan, T. D; Sasidharan, K; Satya Narayanan, A; Krishan, V (Springer Netherlands, 1992-12)
    The theory of ideal magnetohydrodynamic turbulence in cylindrical geometry is used to study the steady-state structure of a coronal loop. The pressure profile is derived from MHD equations by representing the velocity and ...
  • Primary Mirror Active Control System Simulation of Prototype Segmented Mirror Telescope 
    Prasanna Deshmukh; Mishra, Deepta Sundar; Parihar, P. S; Vedashree (IEEE, 2017-01)
    The upcoming large astronomical telescopes are trending towards the Segmented Mirror Telescope (SMT) technology, initially developed at the W M Keck Observatory in Hawaii, where two largest SMTs in the world are in use. ...
  • Primordial black holes as heat sources for living systems with longest possible lifetimes 
    Sivaram, C; Arun, K; Kiren, O. V (Springer, 2014-06)
    Just forty years ago, Hawking wrote his famous paper on primordial black holes (PBH). There have been since innumerable discussions on the consequences of the existence of such exotic objects and ramifications of their ...
  • Primordial Flares, Flux Tubes, and Gamma-ray Bursts 
    Hiremath, K. M (International Astronomical Union, 2000)
    Given the prevailing physical conditions in the cosmic environment, the similarity of solar transients and cosmic gamma-ray bursts suggests that the most promising energy source for the latter may be primordial flares, ...
  • Primordial non-Gaussian signatures in CMB polarization 
    Vidhya, G; Pravabati, C; Yogendran, K. P; Park, C (IOP Publishing, 2015-02)
    We study the signatures of local type primordial non-Gaussianity, parametrized by fNL, of scalar perturbations in CMB polarization using the probability distribution functions, Minkowski Functionals and Betti numbers. We ...
  • Primordial planets predominantly of dark Matter 
    Sivaram, C; Arun, K; Kiren, O. V (Springer, 2019-05)
    Cosmic structure formation is thought to occur as a bottom-up scenario, i.e. the lightest objects would have formed first. It has been suggested that the earliest structures to form could have been primordial planets. Here ...
  • Primordial Rotation of the Universe, Hydrodynamics, Vortices and Angular Momenta of Celestial Objects 
    Sivaram, C; Arun, K (Bentham Open, 2012-03)
    The origin of rotation or spin of objects, from stars to galaxies, is still an unanswered question. Even though there are models which try to explain this, none of them can account for the initial impulse that gave rise ...
  • Principles of Invariance in Radiative Transfer 
    Peraiah, A (Kluwer Academic Publishers, 1999-01)
    We have reviewed the principle of invariance, its applications and its usefulness for obtaining the radiation field in semi-infinite and finite atmospheres. Various laws of scattering in dispersive media and the consequent ...
  • The prize that missed the master: Speaking of science/ G.N. Ramachandran 
    The Hindu (The Hindu, 2001-04-26)
  • PRLNIC3 observations of star forming cloud L1340 
    Ganesh, S; Joshi, U. C; Baliyan, K. S; Shah, C. R; Jain, J. K; Rajpurohit, G. S; Sanchawala, K; Saha, A. B (Astronomical Society of India, 2001)
    Due mainly to high extinction in optical, the structure of our galaxy, Milky Way, is not very well understood. The Galactic disk and bulge contain a host of heavily reddened open clusters which are deeply embedded within ...
  • Probability density functions to represent magnetic fields at the solar surface 
    Sampoorna, M (Springer, 2010)
    Numerical simulations of magneto-convection and analysis of solar magnetogram data provide empirical probability density functions (PDFs) for the line-of-sight component of the magnetic field. In this paper, we theoretically ...
  • Probability for the formation of complex ring molecules in interstellar medium and their detection proposal 
    Ghosh, K. K (International Astronomical Union, 1987)
    The pathways for the formation and destruction processes of ring molecules in the interstellar medium are proposed and their abundances are calculated under steady state conditions. The calculated abundances are of the ...
  • Probability of arrival of rays of light for propagation through random media: Connection with rotational brownian motion 
    Chatterjee, S (Elsevier, 1989-12)
    An expression is derived for the probability of arrival of rays of light for propagation through a random medium with isotropic and homogeneous correlation function for the refractive index fluctuations. This expression ...
  • Probable additional Swan band lines in the Solar spectrum 
    Sinha, K; Mehrotra, M (Astronomical Society of India, 1985-06)
    Several unidentified spectral features in the solar spectrum are listed by Moore et al. (1966). They are traceable in the atlas by Delbouille et al. (1973). We attempt to identify some of these features in the region lamda ...
  • Probable binary open star clusters in the Galaxy. 
    Subramaniam, A; Gorti, U; Sagar, R; Bhatt, H. C (EDP Science, 1995-10)
    The existence of double/binary clusters in the Magellanic Clouds is fairly well established, whereas only one such pair, h + χ Persei, is known in the Galaxy. From the catalogues of open clusters of the Galaxy, we have ...
  • A probable initial configuration of a flaring loop 
    Krishan, V (Institute of Physics, 1986-02)
    A clue to the preflare configuration of a magnetic loop is obtained based on Taylor's hypothesis that the decay of energy to a minimum with magnetic helicity remaining constant leads to a force free state. The numerical ...
  • Probable wavelengths and relative intensities of MgO infrared bands 
    Murty, P. S (American Geophysical Union, 1978-09)
    The need for experimental data on some of the spectroscopic properties of MgO which may be useful during a further search for MgO in the lower E region of the ionosphere is emphasized. Predicted relative intensities of the ...
  • Probes of superclusters at moderate redshifts 
    Narasimha, D; Singh, K. P (Astronomical Society of India, 2000)
    Detection of superclusters at z = 0.2 - 1.0 and determination of their mass provide constraints on the theories of structure formation in the Universe. A combination of the study of hot gas observed in X-rays, and the ...

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