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  • Ramesh, K. B (Springer, 1998-01)
    Lomnicky Stit data of 5303 U coronal green-line index (CI) are analysed for the years 1965–1994. The yearly quiet-Sun component (Q_ci) of CI estimated through the linear regression analysis of CI with sunspot numbers (SS) ...
  • Voigt, Ethel (Astronomical Society of India, 1911-05)
  • Letton, C. T., ed. (Astronomical Society of India, 1914-03)
  • Sivaram, C (Kluwer Academic Publishers, 1993-08)
    The underlying links between the coupling constants of the fundamental interactions and cosmological parameters explored earlier is shown to give rise to a definite value for the cosmic background temperature.
  • Singh, A. P; Sivaram, C (Deccan Herald, 2009-01-27)
  • Tomaschitz, R (Springer, 1998-03)
    A prerelativistic approach to particle dynamics is explored in an expanding Robertson-Walker cosmology. The receding galactic background provides a distinguished frame of reference and a unique cosmic time. In this context ...
  • Mangalam, A (Astronomical Society of India, 2015)
    We consider a model that takes into account the mass and spin accreted by the hole and the angular momentum torque due to an electrodynamical jet. The spin evolution is calculated with and without accretion; if the accretion ...
  • Bhattacharyya, Dipanweeta (Indian Institute of Astrophysics, 2020-01)
    The connection of the SMBHs to their host galaxies is evidenced by the strong correlation between the mass of SMBH and velocity dispersion, σ, of the stars in rest of the galaxy. This is somewhat surprising because the ...
  • Vahia, M. N (Astronomical Society of India, 1993)
    The Gamma Ray Bursts (GRB) have been observed for the last 20 years by a large number of satellites. However, till recently, comprehensive analysis was difficult in view of varying techniques used by different satellites. ...
  • Peterson, L. E (Astronomical Society of India, 1974-03)
  • Biswas, S. K (editor); Mallik, D. C. V (editor); Vishveshwara, C. V (editor) (Cambridge University Press, 1989)
    Cosmic Perspectives is a collection of essays that details modern cosmology and its relationship to the development of human civilization. Written by leading astronomers, cosmologists and historians, these fourteen essays ...
  • Tonwar, S. C (Astronomical Society of India, 2002)
    Following the discovery of ultra high energy cosmic rays with energies of PeV and higher in the 1950's and detailed studies on the energy spectrum in the TeV-PeV-EeV regions in 1960's, there has been enormous interest in ...
  • Sivaram, C (INSDOC, 1983-08)
    Recently some modifications of the usual GUTS models have been proposed where global baryon-lepton symmetry is spontaneously broken, leading to neutron-antineutron and hydrogen-antihydrogen oscillations. The possible ...
  • Kantharia, N. G; Anupama, G. C; Subramanian, P (Tata Institute of Fundamental Research, 2005)
    Radio observations of the nova remnant of GK Per around 1985 (epoch 1) have shown it to have a spectral index of -0.4 (S propto nu^alpha) at frequencies <1.4 GHz and a spectral index of -0.7 at frequencies >1.4 GHz (Seaquist ...
  • Sivaraman, K. R; Punetha, L. M (Kodaikanal Observatory, 1966-11)
    The variation of the dynamic characteristics of the cosmic ray limb flare of March 7, 1942 based on the K/sub232/ spectroheliograms and H-alpha spectrohelioscope observations of Kodaikanal is presented. Although the flare ...
  • Bhat, C. K; Kaul, R. K; Sapru, M. L; Bhat, C. L (Astronomical Society of India, 2002)
    Detailed Monte Carlo simulations of atmospheric Cerenkov events, recorded by the 349 - pixel imaging camera of the TACTIC Imaging Cerenkov Telescope array at Mt. Abu, Rajasthan, have been carried out to study the possibility ...
  • Bhattacharjee, P (World Scientific, 1995)
    The model of origin of ultrahigh energy (UHE) (i.e., energy E~> 10sup/8 eV) cosmic rays from cosmic topological defects such as cosmic strings, magnetic monopoles, etc., is discussed. We discuss the general nature of the ...
  • Rowell, G. P (Astronomical Society of India, 2002)
    The origin of Galactic cosmic rays is still a burning question that forms a major motivation for developments in ground-based gamma-ray astronomy. SNRs are long-thought to be sites for the acceleration of Galactic cosmic ...
  • Apparao, K. M. V (Astronomical Society of India, 1997)
    The autobiographical article presents discussions in the topics of particle physics and cosmic rays, He-3 isotopes, crab nebula, antiprotons, neutron stars, cyclotron lines, infrared bursts, gamma ray bursts, white holes ...
  • Bhattacharjee, P (Saha Institute of Nuclear Physics, 1995)
    "A phase transition from quark-gluon plasma to hadronic matter may have ocurred in the early universe when the universe was about 10 ~sec old and the temperature was about 100-200 MeV. Is there any relic from that microsecond ...

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