Browsing by Title

Sort by: Order: Results:

  • Black hole shadow and acceleration bounds for spherically symmetric space times 
    Kajol, P; Kolekar, Sanved (American Physical Society, 2023-11-15)
    We explore an interesting connection between black hole shadow parameters and the acceleration bounds for radial linear uniformly accelerated (LUA) trajectories in static spherically symmetric black hole spacetime geometries ...
  • The Black Hole-Galaxy Connection: Interplay between Feedback, Obscuration, and Host Galaxy Substructure 
    Juneau, Stephanie; Goulding, Andy D; Banfield, Julie; Bianchi, Stefano; Duc, Pierre-Alain; Ho, I. -Ting; Dopita, Michael A; Scharwächter, Julia; Bauer, Franz E; Groves, Brent; Alexander, David M; Davies, Rebecca L; Elbaz, David; Freeland, Emily; Hampton, Elise; Kewley, Lisa J; Nikutta, Robert; Shastri, Prajval; Shu, Xinwen; Vogt, Frederic P. A; Wang, Tao; Wong, O. Ivy; Woo, Jong-Hak (American Astronomical Society, 2022-02-01)
    There is growing evidence for physical influence between supermassive black holes and their host galaxies. We present a case study of the nearby galaxy NGC 7582, for which we find evidence that galactic substructure plays ...
  • Black Holes 
    Kapoor, R. C (Astronomical Society of India, 1976-03)
  • Black Holes and Rotation 
    Vishveshwara, C. V (Indian Academy of Sciences, 1999-12)
    In this article, we first consider briefly the basic properties of the non –rotating schwarzschild black hole and the rotating Kerr Black hole rotational effects are then described in static and stationary spacetimes with ...
  • Black holes and the LHC 
    Sivaram, C (South Asian Publisher, 2009-03)
    The relevant physics for the possible formation of black holes in the LHC is discussed.
  • Black holes are in sight - Nobel in physics 2020 
    Anupama, G. C (Indian Physics Association, 2020-10)
    The Nobel Prize in Physics 2020 has been awarded to three scientists. One half of the prize was awarded to Roger Penrose and the other half was jointly awarded to Reinhard Genzel and Andrea Ghez. Penrose’s discovery of ...
  • Black Holes in Cosmological Background 
    Ramachandra, B. S (Indian Institute of Astrophysics, Bangalore, 2003-03)
  • Black holes in nonflat backgrounds: The Schwarzschild black hole in the Einstein universe 
    Nayak, R. K; MacCallum, M. A; Vishveshwara, C. V (The American Physical Society, 2001-01)
    As an example of a black hole in a non-flat background a composite static spacetime is constructed. It comprises a vacuum Schwarzschild spacetime for the interior of the black hole across whose horizon it is matched onto ...
  • Black Holes in Our Universe: Do they Inch up the Mass Ladder? 
    Shastri, P (Indian Academy of Sciences, 2017-03)
    Current technologies have enabled glimpses at the many facets of black holes, which we know to be plentiful in our cosmos. A panoramic view of the evidence for them is presented here across the large range of masses that ...
  • 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. ...

Search DSpace

Browse

My Account