IIA Institutional Repository

Browsing by Author "Srikanth, R"

Browsing by Author "Srikanth, R"

Sort by: Order: Results:

  • The Chromospheric Network - (A) Network Evolution Viewed as a Diffusion Process 
    Srikanth, R; Singh, J; Raju, K. P (Kluwer Academic Publishers, 1999-03)
    Autocorrelation and cross-correlation techniques have been applied to obtain quantitative information about the dynamics of magnetic flux on the solar surface. The speed of network magnetic elements and the diffusion ...
  • The chromospheric network: Dependence of cell lifetime on length-scale 
    Srikanth, R; Raju, K. P; Singh, J (Kluwer Academic Publishers, 1999-02)
    A time series of CaiiK filtergrams of the chromosphere was used to study the relationship between correlation lifetimes and autocorrelation length scales. The form of the lifetime-scale relation is inferred by comparing ...
  • The Correlation Lifetimes of Chromospheric CA II K Network Cells 
    Raju, K. P; Srikanth, R; Singh, J (Springer, 1998-03)
    The lifetimes and spatial scales of emission network cells in the solar chromosphere were studied from a nearly continuous sequence of Caii K filtergrams, obtained from Antarctica. The temporal autocorrelation function ...
  • The Dependence of Chromospheric CA II K Network Cell Sizes on Solar Latitude 
    Raju, K. P; Srikanth, R; Singh, J (Springer, 1998-06)
    Calcium K line spectroheliograms obtained during the solar minimum phases at Kodaikanal between 1913–1974 have been used to study the network cell sizes. The autocorrelation is calculated for two-dimensional strips at 5° ...
  • Determination of Linear Polarization of Solar Corona from Observations of the Eclipse of October 24, 1995 
    Srikanth, R; Sharma, Mangala; Rajaguru, S. P (Indian Institute of Astrophysics, Bangalore, 1997)
    Photographs of the Solar Corona were taken using a refractor telescope and polarizer during the Solar Eclipse of October 24, 1995. Two sets of photographs with 0.5 second and 1.0 second exposure, for different orientations, ...
  • Distribution of Supergranular Sizes 
    Srikanth, R; Singh, J; Raju, K. P (The American Astronomical Society, 2000-05)
    A gradient-based method of tessellation was applied to SOHO Dopplergrams and to Ca II K filtergrams in order to study the cellular pattern of the solar surface, in specific the geometric relationship between the tessellation ...
  • The Distribution of the Quiet Sun Photospheric Magnetic Flux 
    Srikanth, R; Singh, J; Bagare, S. P (Astronomical Society of India, 2002-12)
    A gradient-based tessellating algorithm is used to study the magnetic field structure of the quiet Sun photosphere using SoRO full disk magnetograms. We find that the field is not uniformly distributed, but parcelled ...
  • Fractal structure of solar supergranulation 
    Paniveni, U; Krishan, V; Singh, J; Srikanth, R (European Space Agency, 2005-12)
    We employ fractal analysis to study the complexity of supergranulation structure using the solar and Heliospheric Observatory (SOHO) dopplergrams. Our data consist of 200 visually selected Supergranular cells, for which ...
  • Information flow due to controlled interference in entangled systems 
    Srikanth, R (Indian Academy of Sciences, 2002-08)
    We point out that controlled quantum interference corresponds to measurement in an incomplete basis and implies a nonlocal transfer of classical information. A test of whether such a generalized measurement is permissible ...
  • Lifetimes and sizes of supergranular cells 
    Raju, K. P; Srikanth, R; Singh, J (Astronomical Society of India, 1999)
    Supergranulation is the surface manifestation of large scale solar convection. Since there is a strong correspondence between supergranulation pattern and Ca K chromospheric network, lifetimes and sizes may be obtained ...
  • Morphology of Ca II K bright points and their link to G band bright points 
    Krishnakumar, V; Venkatakrishnan, P; Srikanth, R (Astronomical Society of India, 2000)
    We present the results of a preliminary analysis of a time series of a sequence of Ca II K bright points and G band bright points observed co-spatially and co-temporally. Inspection of these images shows that the larger ...
  • Narrow Band Photometry in Emission Lines during the Total Solar Eclipse of October 24, 1995 
    Singh, J; Cowsik, R; Venkatakrishnan, P; Srinivasan, R; Chinnappan, V; Raju, K. P; Srikanth, R (Indian Institute of Astrophysics, Bangalore, 1997)
    To investigate the spatial variation of tempereture and density within coronal strucures, narrow band photometry in three coronal emission lines was done during this eclipse. The emission lines 6374 (FeX), 7892 (Fe XI) and ...
  • On a generalized peaceful coexistence of special relativity and quantum mechanics 
    Srikanth, R (Elsevier, 2001-12)
    The result that quantum nonlocality is causal because it cannot be used to transfer classical information across spacelike intervals is extended to entangled n-partite systems (n2). We show that correlations between any m ...
  • On the Fractal Structure of Solar Supergranulation 
    Paniveni, U; Krishan, V; Singh, J; Srikanth, R (Springer, 2005-10)
    We employ fractal analysis to study the complexity of supergranulation structure using the Solar and Heliospheric Observatory (SOHO) dopplergrams. Our data consists of 200 visually selected supergranular cells, for which ...
  • Photospheric Flow Fields and Properties of Embedded Small-scale Magnetic Flux Concentrations 
    Rajaguru, S. P; Srikanth, R; Hasan, S. S (Astronomical Society of the Pacific, 2001)
    The association between the different scales of convection on the solar photosphere and the field strengths/flux contents of discrete magnetic flux elements are analysed using simultaneously recorded SOHO MDI high resolution ...
  • Physical Interpretation of the Poynting-Robertson Effect 
    Srikanth, R (Academic press, 1999-07)
    Although the prevalent mathematical description of the Poynting-Robertson effect is correct, its physical interpretation is sometimes problematic. By means of a two-parameter model, we revisit the effect in order to get a ...
  • Possible Evidence of Long-Term Oscillations in the Solar Atmosphere 
    Raju, K. P; Singh, J; Srikanth, R; Chou, Dean-Yi; CA, TON team (Springer, 2001-03)
    We have obtained the temporal correlation function, Q(t), from time sequences of Caii K filtergrams and Dopplergrams from Antarctica, Taiwan Oscillation Network (TON) and Solar and Heliospheric Observatory (SOHO). Q(t) ...
  • A quantum field theoretic description of the delayed choice experiment 
    Srikanth, R (Indian Academy of Sciences, 2001-11)
  • Relationship between horizontal flow velocity and cell lifetime for supergranulation from SOHO Dopplergrams 
    Paniveni, U; Krishan, V; Singh, J; Srikanth, R (Royal Astronomical Society, 2004-02-01)
    A study of 50 supergranular cells obtained from Solar and Heliospheric Observatory (SOHO) Dopplergrams was undertaken in order to investigate the relationship between the lifetime (T) and the horizontal flow velocity (vh) ...
  • Relationship between horizontal flow velocity and cell size for supergranulation using SOHO Dopplergrams 
    Krishan, V; Paniveni, U; Singh, J; Srikanth, R (Royal Astronomical Society, 2002-07)
    A study of 90 supergranular cells obtained from SOHO Dopplergrams was undertaken in order to investigate a possible relation between the sizes and peak horizontal velocities of the cells. For the sample obtained, the two ...

Search DSpace

Browse

My Account