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Browsing Publications of Astronomical Society of India by Title

Browsing Publications of Astronomical Society of India by Title

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  • Small/automated telescopes and backend instrumentation for teaching purpose 
    Gupta, R (Astronomical Society of India, 2001)
    In the past decade, with the inception of IUCAA and other similar efforts from Universities and Institutes, several MSc teaching courses at Universities now offer Astronomy & Astrophysics as a special paper along with a ...
  • SN 2002ap, the Hypernova of Class Ic 
    Pandey, S. B; Sahu, D. K; Anupama, G. C; Bhattacharya, D; Sagar, R (Astronomical Society of India, 2003)
    The supernova SN 2002ap was discovered in the outer regions of the nearby spiral M74 on January 29.4 UT. Early photometric and spectroscopic observations indicate the supernova belongs to the class of Ic hypernova. Late ...
  • The society's conversazione 
    Letton, C. T (1913-02)
  • Soft X-ray Imaging Telescope on ASTROSAT 
    Singh, K. P (Astronomical Society of India, 2002-09)
    A Soft X-ray focusing Telescope (SXT) with an X-ray sensitive CCD camera at the focal plane is being developed for the ASTROSAT. Made from conical foil mirrors with a CeD detector in the focal plane SXT will have a ...
  • Soft X-ray properties of a complete sample of QSOs 
    Dewangan, G. C; Singh, K. P (Astronomical Society of India, 2001)
    In order to study systematically the soft X-ray emission of AGNs, we have analyzed ROSAT PSPC spectra of 22 QSOs. The QSOs form a complete sample with soft X-ray flux ??1.4 x 10-14 erg cm-2 s-1 in the energy band of 0.1-2.0 ...
  • Solar Activity, Coronal Holes and their Influence 
    Venkatesan, D (Astronomical Society of India, 1979-09)
  • Solar and interplanetary signatures of intense geomagnetic storms during 1997-2000 
    Srivastava, N (Astronomical Society of India, 2001)
    During the ascending phase of the recent solar cycle, the solar and interplanetary signatures of coronal mass ejections (CMEs) observed by Large Angle Spectrometric Coronagraphs (LASCO) aboard SOHO, have been examined. ...
  • Solar astrophysics: an overview 
    Roxburgh, I. W (Astronomical Society of India, 1996)
  • Solar coronal rotation and phase of solar activity cycle 
    Mehta, M (Astronomical Society of India, 2005-09)
    Solar rotation continues to be observed by several techniques. We have tried to study coronal rotation using radio observations. Coronal rotation and its variation with height in solar atmosphere are studied. For this, we ...
  • Solar Cycle Variation in GONG and MDI Data : 1995-2002 
    Tripathy, S. C (Astronomical Society of India, 2003)
    Both GONG and MDI projects have measured p-mode frequencies of the Sun for more than 7 years. Here we review what we have learnt from the temporal variation of the oscillation frequencie and splitting coefficients.
  • The solar eclipse of October 1911 as it will be observed in India 
    Mitra, A. T; Rakshit, B. M (Astronomical Society of India, 1911-07)
  • Solar flare 1982 April 14 
    Bagare, S. P (Astronomical Society of India, 1985-12)
    We have obtained a good time sequence of spectroheliograms and spatial sequence spectra in the K-line of Ca II using the Kodaikanal tower telescope. We have derived the two dimensional pattern of the mass motions of the ...
  • Solar granulation and speckle interferometry 
    Gupta, K. G; Pande, M. C (Astronomical Society of India, 1992)
    The status of various applications of speckle interferometry and imaging to the study of solar granulations as well as solar activity is reviewed. The physical aspects of solar granulations are examined, with emphasis on ...
  • Solar log gf values for the spectral lines in the range λ λ 6209-6273 Å 
    Stalin, C. S; Sinha, K; Sanwal, B. B (Astronomical Society of India, 1997)
    Utilizing Lieze solar atlas and solar photospheric models, we derived log gf values for the spectral lines in the wavelength range λλ 6209 - 6273 Å. These values, intended for use in a future study of high resolution reticon ...
  • Solar log gf values in the infrared J and H bands 
    Stalin, C. S; Trivedi, C; Sinha, K; Sanwal, B. B (Astronomical Society of India, 1997)
    Solar IR spectra have been utilized to derive log gf values for atomic lines due to 17 chemical elements. From a recent publication in Astronomy and Astrophysics Supplement, we selected unblended solar lines in the infrared ...
  • Solar models with helioseismologically correct sound speed profile 
    Ajukov, S. V; Baturin, V. A (Astronomical Society of India, 1996)
    The problem of computation of the model of the present Sun with given sound speed profile in the solar radiative zone is considered. It is shown that the chemical composition is still a free parameter but the entropy of ...
  • Solar neutrino flux variation and its implications 
    Raychaudhuri, Probhas (Astronomical Society of India, 1996)
    Considering the solar neutrino flux data during the period from June 1989 to April 1992 from four solar neutrino experiments (Cl Solar neutrino experiment, SAGE I & II, GALLEX, Kamiokande II & III) we suggest that the ...
  • Solar observational programs and facilities at UPSO, Naini Tal 
    Gaur, V. P; Verma, V. K; Uddin, W (Astronomical Socity of India, 1998)
    We present here the overview of the solar facilities at the U.P. State Observatory, Naini Tal, which have been developed over years for the observations of solar activity phenomena. The various backend instruments and the ...
  • Solar Photospheric Models and the Rotational Temperatures of THE C/sub2/ and MgH Molecules 
    Sinha, K; Shukla, D. S; Tripathi, B. M (Astronomical Society of India, 1979-06)
    Four photospheric models have been utilized to derive model based rotational temperatures of the (0-0) band of the Swan system of C/sub2/ and that of the green system of the MgH molecules. The dissociation energies were ...
  • Solar physics using the Giant Metrewave Radio Telescope 
    Ananthakrishnan, S (Astronomical Society of India, 1998)

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