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  • Entropy of the gravitational field 
    Rothman, Tony; Anninos, Peter (Astronomical Society of India, 1997)
    We develop a formulation of the entropy of the gravitational field by adopting the statistical mechanics expression for entropy S = lnΩ, where Ω is the phase space of the field bounded by a Hamiltonian. Phase space is ...
  • The environment of the quasar MR 2251-178 
    di Serego Alighieri, S; Perryman, M. A. C; Macchetto, F; Nieto, J. -L; Lelievre, G (Astronomical Society of Indian, 1986-09)
    New high-resolution images of the field of the quasar MR 2251-178 obtained in the forbidden O III lambda-5007 and O II lambda-3727 lines with an ESA photon counting detector. The data are interpreted as a further evidence ...
  • The environments of accreting supermassive black holes in the nearby universe: a brief overview of the southern seyfert spectroscopic snapshot survey (S7) 
    Shastri, P; Dopita, M; Banfield, J; Thomas, A; Longbottom, F; Sundar, M. N; Chetna Duggal; Groves, B; Kharb, P; Davies, R; Kewley, L; Lalitha, S; Hampton, E; Shalima, P; James, B; S7 collaboration (AIP Publishing, 2019-06-21)
    Black holes with a mass a million times the mass of our Sun or more—i.e., supermassive black holes—tend to reside in galactic centers. The mass of a supermassive black hole scales with the mass and stellar velocity dispersion ...
  • Epoch of Galaxy Formation 
    Chokshi, A (Indian Academy of Sciences, 1997-12)
    A preferred epoch for forming galaxies argues strongly in favour of a standard Big Bang cosmology with a single epoch of creation. In this paper I present a model in which there is a causal connection between AGN activity ...
  • EPOXI: Comet 103P/Hartley 2 Observations from a Worldwide Campaign 
    Meech, K. J and 194 coauthors; Bhatt, B. C; Sahu, D. K (IOP Publishing, 2011-06-10)
    Earth- and space-based observations provide synergistic information for space mission encounters by providing data over longer timescales, at different wavelengths and using techniques that are impossible with an in situ ...
  • Epsilon Aurigae in eclipse - The light and colour variations 
    Parthasarathy, M; Frueh, M. L (D. Reidel Publishing Co., 1986-06)
    Theuvby andVRI observations of Aur during the ingress and early totality phases obtained at the McDonald Observatory are analysed. The light and colour variations of Aur during the 1982–1984 eclipse are compared with ...
  • Epsilon Aurigae in eclipse. I - Ultraviolet spectroscopy during INGRESS and totality 
    Parthasarathy, M; Lambert, D. L (Astronomical Society of the Pacific, 1983-12)
    Epsilon Aurigae is a long-period eclipsing system containing a F0 Ia supergiant and an unseen slightly less-massive secondary. A primary eclipse began in mid-1982 with the unseen companion passing in front of the supergiant. ...
  • Equation of motion approach for describing allowed transitions in Ne and Al3+ under classical and quantum plasmas 
    Chaudhuri, S. K; Mukherjee, P. K; Chaudhuri, R. K; Chattopadhyay, S (2018-04)
    The equation of motion coupled cluster methodology within relativistic framework has been applied to analyze the electron correlation effects on the low lying dipole allowed excited states of Ne and Al3þ under classical ...
  • Equation of State of Supernova Matter 
    Datta, Bhaskar (Indian Institute of Astrophysics, 1988)
  • The equatorial anomaly in ionospheric total electron content and the equatorial electrojet 
    Iyer, K. N; Deshpande, M. R; Rastogi, R. G (Indian Academy Science, 1976)
  • The Equatorial Background Solar Corona during Solar Minimum 
    Ramesh, R; Nataraj, H. S; Kathiravan, C; Sastry, Ch. V (University of Chicago Press, 2006-09)
    We report two-frequency (51 and 77 MHz) radio observations of the equatorial brightness distribution of the “undisturbed” solar corona, close to the minimum between sunspot cycles 22 and 23. The contributions from different ...
  • Equatorial electric-fields of ionospheric disturbance dynamo orgin 
    Sastri, J. H (European Geosciences Union, 1988-12)
    Persistent and significant reductions in the strength of the equatorial electrojet, accompanied by poor development of the equatorial ionization anomaly, are noted to sometimes occur in association with negative ionospheric ...
  • Equatorial geomagnetic bays and IMF sector polarity 
    Sastri, J. H (Indian Academy of Sciences, 1979-03)
  • Equatorial irregularity belt and its movement during a magnetic storm 
    Vats, H. O; Chandra, H; Deshpande, M. R; Rastogi, R. G; Murthy, B. S; Janve, A. V; Rai, R. K; Singh, M; Gurm, H. S; Jain, A. R (Nature Publishing Group, 1978-03)
    GEOSTATIONARY satellites are able to monitor amplitude, phase, plane of polarisation (Faraday rotation) and group retardation of radio waves passing through the ionosphere with improved temporal resolution, although some ...
  • Equatorial sporadic e and cross-field instability 
    Rastogi, R. G (Indian Academy of Sciences, 1972-05)
    The occurrence of sporadic E at an equatorial station during magnetically quiet daytime conditions corresponds almost exactly to the time during which the horizontal component of the earth’s magnetic field is above the ...
  • Equatorial spread - F configurations and magnetic activity 
    Sastri, J. H; Murthy, B. S; Sashidharan, K (Indian Academy of Sciences, 1975-10)
  • Equatorial spread-F configurations and geomagnetic activity 
    Sastri, J. H; Sasidharan, K; Subrahmanyam, V; Srirama Rao, M (The Council of Scientific and Industrial Research, 1978-11)
    Using quarter-hourly ionogram data at Kodaikanal (geomag. lat: 0.6°N; dip: 3•S0N) for the period 19.57-63 a study is made of the effect of geomagnetic activity on the occurrence of range and frequency types of spread-F. ...
  • Equilibria of self-gravitating gaseous disks 
    Pandey, U. S; Gupta, A. C (Astronomical Society of India, 1998-12)
  • Equilibrium of a charged test particle in the Kerr-Newman spacetime 
    Aguirregabiria, J. M; Chamorro, A; Suinaga, J; Vishveshwara, C. V (Institute of Physics, 1995-03)
    The equilibrium of a charged test particle in the field of the Kerr-Newman metric is studied. It is shown that equilibrium is possible only (i) on the axis, or (ii) in the equatorial plane. Conditions governing equilibrium ...
  • Equilibrium of a charged test particle in the Kerr-Newman spacetime: force analysis 
    Aguirregabiria, J. M; Chamorro, A; Rajesh Nayak, K; Suinaga, J; Vishveshwara, C. V (IOP Publishing, 1996-08)
    In previous work, the authors studied the equilibrium of a charged test particle placed in the combined gravitational and electromagnetic fields of a Kerr-Newman black hole. Recently, general relativistic analogues of ...

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