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  • Black holes odyssey 
    Kapoor, R. C (The Hawk, 1979-07-01)
  • Blanketing sporadic E layer near the magnetic equator 
    Chandra, H; Rastogi, R. G (American Geophysical Union, 1975-01)
    A study of the ionograms obtained at Kodaikanal (dip latitude 1.7 N) during the period 1954-1966 has shown that the daily variation of the occurrence of the blanketing type of sporadic E has a major peak around 1700 LT in ...
  • Blend lines in the polarized spectrum of the Sun 
    Sowmya, K; Nagendra, K. N; Sampoorna, M (Wiley-Blackwell, 2012-07)
    Blend lines form an integral part of the theoretical analysis and modeling of the polarized spectrum of the Sun. Their interaction with other spectral lines needs to be explored and understood before we can properly use ...
  • Blind iterative deconvolution of binary star images 
    Saha, S. K; Venkatakrishnan, P (Astronomical Society of India, 1997)
    The technique of Blind Iterative De-convolution (BID) was used to remove the atmospherically induced point spread function (PSF) from short exposure images of two binary stars, HR 5138 and 5747 obtained at the cassegrain ...
  • Blinker/Macro-spicule activity in an off-limb polar region 
    O`Shea, E; Banerjee, D; Doyle, J. G (EDP Sciences, 2005-06)
    Using measurements of Ov 629.73 Å from the Coronal Diagnostic Spectrometer (CDS) on board SOHO we report on blinker activity in off-limb regions above the Northern pole of the Sun. The blinkers are found to be occurring ...
  • Blue straggler stars in open clusters using Gaia: dependence on cluster parameters and possible formation pathways 
    Jadhav, Vikrant V; Subramaniam, A (Oxford University Press on behalf of the Royal Astronomical Society, 2021-10)
    Blue straggler stars (BSSs) are the most massive stars in a cluster formed via binary or higher-order stellar interactions. Though the exact nature of such formation scenarios is difficult to pin down, we provide observational ...
  • Bluer colour of UX Arietis at fainter visual magnitudes 
    Rosario, M. J; Raveendran, A. V; Mekkaden, M. V (EDP Sciences, 2007-11)
    Aims.The RS CVn star UX Ari appears bluer when it is fainter, which is unusual for a spotted star; we aim to resolve this unusual behaviour of the object. Also the data available in the literature indicate that the mean V ...
  • Blueshift and spectral features of the gravitational searchlight 
    Chitre, S. M; Narlikar, J. V; Kapoor, R. C (Plenum Publishing Corporation, 1975-10)
    It is shown that a photon emitted in the forward direction by a charged particle moving in an equatorial circular orbit centred on a highly collapsed mass M, the radius being slightly in excess of one and a half times the ...
  • A Born-Infeld Type of Modification of General Relativity with Maximal Curvature 
    de Sabbata, V; Sivaram, C; Wang, D. X (Science Press, China, 1994)
  • Bose-Hubbard model in a strong effective magnetic field: Emergence of a chiral Mott insulator ground state 
    Dhar, A; Maji, M; Mishra, T; Pai, R. V; Mukerjee, S; Paramekanti, A (American Physical Society, 2012-04)
    Motivated by experiments on Josephson junction arrays, and cold atoms in an optical lattice in a synthetic magnetic field, we study the “fully frustrated” Bose-Hubbard model with half a magnetic flux quantum per plaquette. ...
  • A bound on violations of Lorentz invariance 
    Cowsik, R; Sreekantan, B. V (Elsevier Science B. V, 1999-03)
    Recently Coleman and Glashow [Phys. Lett. B 405 (1997) 249; Harvard University Theoretical Physics Preprint 98/AO76 (pvt. comm)] have developed a model which allows the introduction of a small violation of Lorentz invariance. ...
  • Bound orbit domains in the phase space of the Kerr geometry 
    Prerna Rana; Mangalam, A (World Scientific Publishing, 2022)
    We derive the conditions for a non-equatorial eccentric bound orbit to exist around a Kerrblack hole in two-parameter spaces: the energy, angular momentum of the test particle,spin of the black hole, and Carter’s constant ...
  • Boundary to the solar system set by the Galaxy according to King-Innanen's formula 
    Rawal, J. J (Astronomical Society of Indian, 1986-03)
    A planet/comet-sun-Galaxy system is considered, under the assumption that the whole mass of the Galaxy is concentrated at its center, in order to find the limiting direct and retrograde orbits around the sun using ...
  • Brackett-gamma line and facula models 
    Tripathi, B. M; Pande, M. C (Astronomical Society of India, 1981-12)
    An attempt has been made to show that the profile of the Brackett-gamma line can distinguish between different facula models. It is suggested that low noise high resolution scans of Brackett lines can help improve the ...
  • Brahmanda- Ek Samkshipta Parichaya (In Hindi) 
    Kapoor, R. C (Indian Institute of Astrophysics, 2011-04)
  • Branching ratios of radiative transitions in O VI 
    Sur, C; Chaudhuri, R. K (Institute of Physics, 2007-11)
    We study the branching ratios of the allowed and forbidden radiative transitions among the first few (9) fine structure levels of O VI using relativistic coupled-cluster theory. We find irregular patterns for a number of ...
  • Brazilian Decimetre Array (Phase-1): Initial solar observations 
    Ramesh, R; Sawant, H. S; Cecatto, J. R; Faria, C; Fernandes, F. C. R; Kathiravan, C; Suryanarayana, G. S (Elsevier B.V, 2007-02)
    An East–West one-dimensional radio interferometer array consisting of 5 parabolic dish antennas has been set-up at Cachoeira Paulista, Brazil (Longitude: 45°0′20″W, Latitude: 22°41′19″S) for observations of Sun and some ...
  • Brazilian Decimetric Array (Phase-I) 
    Sawant, H. S; Ramesh, R; Cecatto, J. R; Faria, C; Fernandes, F. C. R; Rosa, R. R; Andrade, M. C; Stephany, S; Cividanes, L. B. T; Miranda, C. I. A; Botti, L. C. L; Boas, J. W. S. V; Saito, J. H; Moron, C. E; Mascarenhas, N. D; Subramanian, K. R; Sundararajan, M. S; Ebenezer, E; Sankararaman, M. R (Springer Netherlands, 2007-05)
    An East – West, one-dimensional radio interferometer array consisting of five parabolic dish antennas has been set up at Cachoeira Paulista (longitude 45°0′20″ W, latitude 22°41′19″ S) for observations of the Sun and some ...
  • Breaking the Habit: The Peculiar 2016 Eruption of the Unique Recurrent Nova M31N 2008-12a 
    Henze, M; Darnley, M. J; Williams, S. C; Kato, M; Hachisu, I; Anupama, G. C; Arai, A; Boyd, D; Burke, D; Ciardullo, R; Chinetti, K; Cook, L. M; Cook, M. J; Erdman, P; Gao, X; Harris, B; Hartmann, D. H; Hornoch, K; Chuck Horst, J; Hounsel, R; Husar, D; Itagaki, K; Kabashima, F; Kafka, S; Kaur, A; Kiyota, S; Kojiguchi, N; Kučáková, H; Kuramoto, K; Maehara, H; Mantero, A; Masci, F. J; Matsumoto, K; Naito, H; Ness, J. U; Nishiyama, K; Oksanen, A; Osborne, J. P; Page, K. L; Paunzen, E; Pavana, M; Pickard, R; Prieto-Arranz, J; Rodríguez-Gil, P; Sala, G; Sano, Y; Shafter, A. W; Sugiura, Y; Tan, H; Tordai, T; Vraštil, J; Wagner, R. M; Watanabe, F; Williams, B. F; Bode, M. F; Bruno, A; Buchheim, B; Crawford, T; Goff, B; Hernanz, M; Igarashi, A. S; José, J; Motta, M; O’Brien, T. J; Oswalt, T; Poyner, G; Ribeiro, V. A. R. M; Sabo, R; Shara, M.M; Shears, J; Starkey, D; Starrfield, S; Woodward, C. E (IOP Publishing, 2018-04-10)
    which is the most promising candidate for the single-degenerate progenitor of a Type Ia supernova known to date. The previous three eruptions of M31N 2008-12a have displayed remarkably homogeneous multiwavelength properties: ...
  • Breaking the habit: the peculiar 2016 eruption of the unique recurrent nova M31N 2008-12a 
    Henze, M; Darnley, M. J; Williams, S. C; Kato, M M; Hachisu, I; Anupama, G. C; Arai, A; Boyd, D; Burke, D; Ciardullo, R; Chinetti, K; Cook, L. M; Cook, M. J; Erdman, P; Gao, X; Harris, B; Hartmann, D. H; Hornoch, K; Chuck Horst, J; Hounsel, R; Husar, D; Itagaki, K; Kabashima, F; Kafka, S; Kaur, A; Kiyota, S; Kojiguchi, N; Kucakova, H; Kuramoto, K; Maehara, H; Mantero, A; Masci, F. J; Matsumoto, K; Naito, H; Ness, J.-U; Nishiyama, K; Oksanen, A; Osborne, J. P; Page, K. L; Paunzen, E; Pavana, M; Pickard, R; Prieto-Arranz, J; Rodri­guez-Gil, P; Sala, G; Sano, Y; Shafter, A. W; Sugiura, Y; Tan, H; Tordai, T; Vrastil, J; 22 others (IOP Publishing, 2018-04-10)
    Since its discovery in 2008, the Andromeda galaxy nova M31N 2008-12a has been observed in eruption every single year. This unprecedented frequency indicates an extreme object, with a massive white dwarf and a high accretion ...

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