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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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  • Vacuum fluctuations in Einstein`s elevator 
    Padmanabhan, T (Astronomical Society of India, 1985-09)
    Vacuum fluctuation in the Einstein`s elevator (which mimics a constant gravitational field) is analysed without introducing a plethora of extraneous vacuum states. In the elevator there is no particle creation, through the ...
  • Variability of eta Hydrae 
    Saxena, B. K; Srivastava, R. K (Astronomical Society of India, 1997)
    The first observations of n Hya, taken at Pachmarhi, are presented. Night to night light variability on n Hya has been discussed. Maximum amplitude of light variation is found to be 0m 096. Preliminary results show that ...
  • The Variability of Stars 
    Conyngham, Lenox (Astronomical Society of India, 1911-02)
  • Variability study of Mrk-421 in near IR bands from Mt. Abu observatory 
    Joshi, U. C; Baliyan, K. S; Ganesh, S (Astronomical Society of India, 2002)
    Mrk421 is the nearest, and brightest blazar detected in almost all the spectral windows, including high energy gamma-rays. It exhibits short and long timescale variations at all frequency bands. Though it has been observed ...
  • Variable stars in the old galactic cluster M67 
    Rajamohan, R; Bhattacharyya, J. C; Subramanian, V; Kuppuswamy, K (Astronomical Society of Indian, 1988-12)
    Schmidt plates of the old open galactic cluster M67 were obtained on twelve nights to find the most probable variables in the cluster. The Sabattier technique was used to derive the magnitudes of the cluster members. The ...
  • Variable X-Ray Sources and Block Holes in Binaries 
    Abhyankar, K. D (Astronomical Society of India, 1974-03)
  • Variation of the Si II features in the chemically peculiar star - HD 115735 
    Sriraghavan, S. M; Jayakumar, K; Babu, G. S. D; Sujatha, S (Astronomical Society of India, 2004-06)
    The chemically peculiar star HD 115735 (= HR 5023 = 21 CVn) was observed with the 2.34 meter Vainu Bappu Telescope at Kavalur during the period of January 1999 to April 2000. A total of 47 spectrograms were obtained in the ...
  • Variations in the rotational velocity of sunspot groups during their lifetimes. 
    Gokhale, M. H; Hiremath, K. M (Astronomical Society of India, 1984-12)
  • Vedic astronomers 
    Holay, P. V (Astronomical Society of India, 1998)
    The aim of this paper is to show that natural origin of Hindu astronomy in remote antiquity is the Indian environment of six seasons of monsoon climate. The deities and demons described in the Rigveda are either astronomical ...
  • Velocity field structure in the Orion Nebula 
    Seema, P; Banerjee, D. P. K; Anandarao, B. G (Astronomical Society of India, 1993)
    High quality interferograms have been obtained on the H II region in the Orion Nebula in the emission line of (OIII) 5007 A using the high resolution imaging Fabry-Perot spectrometer. Velocity profiles were obtained for ...
  • Vertical scaleheights of stars and gas in the galaxy 
    Narayan, C. A; Jog, C. J (Astronomical Society of India, 2002-09)
    The vertical scaleheight of atomic hydrogen gas is observed to be nearly constant with radius in the inner Galaxy « 8.5 kpc). This has been a long-standing puzzle (Oort 1962) because the gas scaleheight should ...
  • The Very Early Universe: Problems and Perspectives 
    Narlikar, J. V (Astronomical Society of India, 1985-03)
  • Very high energy gamma-ray astronomy using atmospheric Cerenkov technique 
    Acharya, B. S (Astronomical Society of India, 1992)
    Research by Indian scientists in the field of very high energy gamma-ray astronomy using the Cerenkov technique is surveyed. A gamma-ray telescope set-up operating at Pachmarhi employing this technique is discussed
  • VHE Gamma-ray astronomy : Present status and future challenges 
    Finley, J. P (Astronomical Society of India, 2002)
    This paper will report on the status of VHE gamma-ray astronomy at the start of the new millennium. The decade of the 90's saw rapid development of the field and many new detectors and proposed facilities are discussed. ...
  • VHE gamma-ray astronomy experiments in India - Imaging cerenkov technique 
    Bhat, C. L; Kaul, R. K (Astronomical Society of India, 2002)
    The recent advances in the field of very high energy (VHE) or TeV gamma-ray astronomy, culminating in the unambiguous detection of several galactic and extragalactic sources, owes itself largely to the successful exploitation ...
  • Vibration-rotation bands of SiH and MgH in sunspot spectra 
    Sinha, K; Joshi, G. C (Astronomical Society of India, 1982-12)
    We have calculated the equivalent widths of the vibration-rotation bands of SiH and MgH molecules for a possible detection in the sunspot spectrum. Five different models were utilized and the results obtained with and ...
  • A viewpoint on moderate size solar telescope 
    Bhatnagar, A (Astronomical Society of India, 1998)
  • The wandering pole 
    Hart, Henry (Astronomical Society of India, 1913-03)
  • Warp of the Galactic Disk as seen in Mid Infrared from Midcourse Space Experiment 
    Vig, S; Ghosh, S. K; Ojha, D. K (Astronomical Society of India, 2003)
    The nature of the warp structure in the distribution of stellar as well as warm interstellar dust (WISD) components in the Galactic disk has been investigated using respective mid infrared emissions. Such a study with high ...
  • Wave leakage in a magnetized isothermal atmosphere 
    Banerjee, D; Hasan, S. S; Christensen-Dalsgaard, J (Astronomical Society of India, 1996)
    The present investigation is a continuation of earlier work by Hasan & christensen-Dalsgaard (1992) and Banerjee, Hasan & Christensen-Dalsgaard(1995), where the interaction of various elementary modes in a stratified ...

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