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  • Is the X-ray pulsar H 0253 + 193 a neutron star spun down in a molecular cloud? 
    Bhatt, H. C (The European Southern Observatory, 1990-06)
    The detection of 206s X-ray pulsations from H0253+193 indicates that the source is a compact object. It is argued here that object can not be a T Tauri star or Be/X –ray binary pulsar suggested that H 0253+193 is slowly ...
  • Is the X-ray pulsar H 0253 + 193 a neutron star spun down in a molecular cloud? 
    Bhatt, H. C (The European Southern Observatory, 1990-06)
    The detection of 206s X-ray pulsations from H0253+193 indicates that the source is a compact object. It is argued here that object can not be a T Tauri star or Be/X –ray binary pulsar suggested that H 0253+193 is slowly ...
  • Is there lower limit to velocity or velocity change? 
    Sreenath, B.N; Arun, K; Sivaram, C (Springer, 2013-05)
    Here we explore the possibility of a lower limit to velocity or velocity change which is 20 orders of magnitude smaller than the speed of light and explore the various observable signatures including those in cosmic rays ...
  • Is Venus cloud covered? 
    Evershed, John (Royal Astronomical Society, 1919)
  • Isodensitometry of Omega Centauri and 47 Tucanae 
    Scaria, K. K (Indian Institute of Astrophysics, Bangalore, 1980)
    We present details of procedure on equidensitometry of globular clusters using the Sabattier technique in photography. Equidensitometry of Omega Centauri and 47 Tuc shows that both clusters become more elliptical beyond r ...
  • ISOGAL: A deep survey of the obscured inner Milky Way with ISO at 7 mu m and 15 mu m and with DENIS in the near-infrared 
    Omont, A; Gilmore, G. F; Alard, C; Aracil, B; August, T; Baliyan, K; Beaulieu, S; Begon, S; Bertou, X; Blommaert, J. A. D. L; Borsenberger, J; Burgdorf, M; Caillaud, B; Cesarsky, C; Chitre, A; Copet, E; de Batz, B; Egan, M. P; Egret, D; Epchtein, N; Felli, M; Fouque, P; Ganesh, S; Genzel, R; Glass, I. S; Gredel, R; Groenewegen, M. A. T; Guglielmo, F; Habing, H. J; Hennebelle, P; Jiang, B; Joshi, U. C; Kimeswenger, S; Messineo, M; Miville-Deschenes, M. A; Moneti, A; Morris, M; Ojha, D. K; Ortiz, R; Ott, S; Parthasarathy, M; Perault, M; Price, S. D; Robin, A. C; Schultheis, M; Schuller, F; Simon, G; Soive, A; Testi, L; Teyssier, D; Tiphene, D; Unavane, M; van Loon, J. T; Wyse, R (EDP Sciences, 2003-06)
    The ISOGAL project is an infrared survey of specific regions sampling the Galactic Plane selected to provide information on Galactic structure, stellar populations, stellar mass-loss and the recent star formation history ...
  • Isolated pairs of spiral galaxies--a statistical study of far infrared and microwave characteristics 
    Venugopal, V. R; Narasimhan, K. S. V. S (Astronomical Society of India, 1993-06)
    A statistical study of the far infrared and microwave (lambda 6.3 cm ) lumnosities of a sample of isolated pairs of spiral galaxies and a comparison sample on non-interacting galaxies selected from the lists given by ...
  • Issues with external occultation of a coronagraph 
    Bayanna, A. R; Mathew, S. K; Sankarasubramanian, K; Venkatakrishnan, P; Singh, J; Prasad, B. R (Springer, 2011-04)
    This paper addresses some of the issues related to externally occulted solar coronagraph; vignetting and achievable resolution due to an external occulter. The analytical expression by Evans (J Opt Soc Am 38:1083–1085, ...
  • An iterative simultaneous solution of the equations of statistical equilibrium and radiative transfer in the comoving frame 
    Peraiah, A (Indian Academy of Sciences, 1980)
  • IUCAA 2 meter telescope and its first light instrument IFOSC 
    Gupta, R; Burse, M; Das, H. K; Kohok, A; Ramaprakash, A. N; Engineer, S; Tandon, S. N (Astronomical Society of India, 2002-09)
    The various features of the IUCAA 2-meter telescope, its site parameters and considerations made for preserving the local seeing in terms of ventilation, thermal emissivity of the dome etc are described. The first ...
  • IUE and ISO observations of the bipolar proto-planetary nebula Hen 401 (IRAS 10178-5958) 
    Parthasarathy, M; García-Lario, P; Gauba, G; de Martino, D; Nakada, Y; Fujii, T; Pottasch, S. R; de Cordoba, L. S. F (EDP Sciences, 2001-09)
    We present ultraviolet (IUE) and infrared (ISO) observations of the bipolar proto-planetary nebula Hen 401 which, combined with previously available optical and near infrared data, are used to reconstruct the overall ...
  • IUE observations of high galactic latitude F supergiants HD 161796 and HD 187885 
    Parthasarathy, M; Pottasch, S. R; Wamsteker, W (European Southern Observatory, 1988-09)
    Low resolution (6 A) IUE ultraviolet spectra of the high galactic latitude F supergiants HD 161796 (F3 Ib) and HD 187885 (F2-3I) are analyzed. The UV spectrum (1250 A to 3250 A) of HD 161796 shows no excess UV flux ...
  • The IUE ultraviolet spectrum of PC 11 
    Parthasarathy, M; Pottasch, S. R; Clavel, J (International Astronomical Union, 1993)
  • J C Bhattacharyya: the Guide and the Supervisor 
    Library, IIA (Library, Indian Institute of Astrophysics, 2014-04-19)
    This poster was displayed at Kavalur during the dedication ceremony of 1.3 metre J.C.Bhattacharyya telescope on 19th Apr. 2014.
  • J-state interference signatures in the second solar spectrum. Modeling the Cr I triplet at 5204-5208 
    Smitha, H. N; Nagendra, K. N; Stenflo, J. O; Bianda, M; Sampoorna, M; Ramelli, R; Anusha, L. S (EDP Sciences, 2012-05)
    The scattering polarization in the solar spectrum is traditionally modeled with each spectral line treated separately, but this is generally inadequate for multiplets where J-state interference plays a significant role. ...
  • J. C. Bhattacharyya (1930 - 2012) 
    Indian Institute of Astrophysics (Indian Institute of Astrophysics, 2014-03-17)
  • J. F. Tennant (1829 - 1915) 
    Indian Institute of Astrophysics (Indian Institute of Astrophysics, 2006)
  • J.C. Bhattacharyya - Milestones 
    Library, IIA (Library, Indian Institute of Astrophysics, 2014-04-19)
    This poster was displayed at Kavalur during the dedication ceremony of 1.3 metre J.C.Bhattacharyya telescope on 19th Apr. 2014.
  • J1216+0709: A Radio Galaxy with Three Episodes of AGN Jet Activity 
    Veeresh, Singh; Ishwara-Chandra, C. H; Kharb, P; Srivastava, S; Janardhan, P (IOP Publishing, 2016-08-01)
    We report the discovery of a "triple-double radio galaxy," J1216+0709, detected in deep low-frequency Giant Metrewave Radio Telescope (GMRT) observations. J1216+0709 is only the third radio galaxy, after B0925+420 and ...
  • Jagadish Chandra Bhattacharyya (1930–2012) 
    Prabhu, T. P; Rajan, K. T (Indian Academy of Sciences, 2012-09-25)
    J. C. Bhattacharyya (JCB) passed away in Delhi on 4 June 2012. An eminent instrumentation scientist and observational astronomer, JCB is well known for his discoveries of the atmosphere of Jupiter’s satellite Ganymede ...

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