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  • How Normal are the Peculiar A-Stars 
    Babu, G. S. D; Shylaja, B. S (Astronomical Society of the Pacific, 1993-02)
  • How Thick are the Saturn's Rings? 
    Chakrabarti, S. K; Bhattacharyya, A (Astronomical Society of India, 2002-09)
    It has been long thought that the rings of saturn are probably not thicker than a few hundreds of meters. By actually following the motion of particles inside the decaying bending waves of the Saturn's rings and matching the ...
  • How well do we know our Sun? 
    Chitre, S. M (Indian Institute of Astrophysics, Bangalore, 1988)
    The role of Our Sun as a valuable astrophysical laboratory for testing theories of stellar physics is highlighted. The state of our knowledge concerning the solar interior and the possible probes for gaining insight into ...
  • HR3040- on the Am track ? 
    Sreedhar Rao, S; Raghavender Rao, C; Kilambi, G. C (Astronomical Society of India, 1999)
    HR 3040 (HD 63589) exhibits pseudo-luminosity effects similar to many a main-sequence Am star, especially a strong Sr II 4077 line indicating a higher luminosity class. Its K-line matches that of A3 V, violet and blue ...
  • The Hubble constant 
    Narlikar, J. V (Astronomical Society of India, 1996)
    In this talk the history of Hubble's constant is reviewed from the discovery of the velocity-distance relation to the present day measurements with the Hubble Space Telescope. The problems encountered in fixing the true ...
  • Hubble Space Telescope and Optical Observations of Three Pulsating Accreting White Dwarfs in Cataclysmic Variables 
    Szkody, P; Mukadam, A; Gänsicke, B. T; Woudt, P. A; Solheim, Jan - Erik; Nitta, A; Sion, E. M; Warner, B; Sahu, D. K; Prabhu, T. P; Henden, A (University of Chicago Press, 2007-04)
    Ultraviolet observations using the Solar Blind Channel on the Hubble Space Telescope provide light curves and low-resolution spectra of three pulsating white dwarfs in the cataclysmic variables SDSS J013132.39−090122.3, ...
  • Hubble Space Telescope and Optical Observations of Three Pulsating Accreting White Dwarfs in Cataclysmic Variables 
    Szkody, P; Mukadam, A; Gänsicke, B. T; Woudt, P. A; Solheim, Jan-Erik; Nitta, A; Sion, E. M; Warner, B; Sahu, D. K; Prabhu, T. P; Henden, A (American Astronomical Society, 2007-04)
    Ultraviolet observations using the Solar Blind Channel on the Hubble Space Telescope provide light curves and low-resolution spectra of three pulsating white dwarfs in the cataclysmic variables SDSS J013132.39-090122.3, ...
  • Hubble Space Telescope Observations Of Dusty Filaments In Hercules A: Evidence For Entrainment 
    O'Dea, C. P; Baum, S. A; Tremblay, G. R; Kharb, P; Cotton, W; Perley, R (IOP Publishing, 2013-07-01)
    We present U-, V-, and I-band images of the host galaxy of Hercules A (3C 348) obtained with HST/WFC3/UVIS. We find a network of dusty filaments which are more complex and extended than seen in earlier Hubble Space Telescope ...
  • The Hubble tension: change in dark energy or a case for modified gravity? 
    Sivaram, C; Arun, K; Rebecca, Louise (Springer, 2022-03)
    Recently, much controversy has been raised about the cosmological conundrum involving the discrepancy in the value of the Hubble constant as implied by Planck satellite observations of the CMBR in the early Universe and ...
  • The Hulse-Taylor binary pulsar PSR 1913+16. 
    Sivaram, C (Astronomical Society of India, 1995)
    The significance of the binary pulsar 1913+16 in establishing evidence for gravitational radiation emission from binary systems is described. It is pointed out that the system has enabled verification of general relativity ...
  • Hundred Years of Einstein's Cosmological Constant 
    Sivaram, C; Arun, K; Kiren, O. V; Sivaram, C (Isaac Scientific Publishing, 2018-06)
    It was little over a hundred years ago that Einstein introduced the ‘cosmological constant’ in his General Theory of Relativity in order to obtain a static universe, to conform to the philosophical view of the universe ...
  • Hunters in the skies 
    The Times of India (The Times of India, 1987-08-14)
  • Hybrid approach to relativistic Gaussian basis functions: Theory and applications 
    Chaudhuri, R. K; Panda, P. K; Das, B. P (The American Physical Society, 1999-02)
    We present a hybrid method to solve the relativistic Hartree-Fock-Roothan equations where the one- and two-electron radial integrals are evaluated numerically by defining the basis functions on a grid. This procedure reduces ...
  • Hybrid viscosity and magnetoviscous instability in hot, collisionless accretion disks 
    Subramanian, P; Becker, P. A; Kafatos, M. (Springer Netherlands, 2008)
    We aim to illustrate the role of hot protons in enhancing the magnetorotational instability (MRI) via the “hybrid” viscosity, which is due to the redirection of protons interacting with static magnetic field perturbations, ...
  • The hydrogen content of prominences 
    Menon, C. P. S (Government Observatory, Madras, 1933-06-14)
  • Hydrogen deficient stars and related objects: proceeding of the 87th colloquium of the international astronomical union held at Mysore, India, 10–15 November 1985 
    Hunger, K (editor); Schonberner, D (editor); Kameswara Rao, N (editor) (D. Reidel Publishing Company, 1986)
    The first helium star was discovered in 1942, the first scientific meeting on the subject, however, took place in 1985. The meeting was hence long overdue for, in the meantime, a substantial amount of material had been ...
  • The hydrogen-deficient irregular variable star V348 SGR 
    Kameswara Rao, N; Nandy, K (1984-07)
    The distribution of the reddening material around V 348 Sgr was studied using the IUE low resolution spectra. The nebula surrounding the star has a reddening of E(B-V) = 0.3 caused mainly by the foreground interstellar ...
  • Hydrogen-deficient nature of Z UMi 
    Goswami, A; Kameswara Rao, N; Gonzalez, G; Lambert, D. L (Astronomical Society of the Pacific, 1996)
  • Hydromagnetic surface waves in compressible moving cylindrical flux tubes 
    Satya Narayanan, A (IOP Publishing, 1991-04)
    The dispersive characteristics of hydromagnetic surface waves along the boundary of a moving compressible cylindrical plasma column of radius 'a' surrounded by a compressible stationary column are studied
  • Hypertelescope Approach: A Novel Method for Imaging of Stellar Objects 
    Saha, S. K (Optical Society of India, 2011)
    The diffraction limited phase retrieval of a degraded image is an important subject that is being implemented in other branches of physics too, for example, electron microscopy, wavefront sensing, and crystallography. A ...

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