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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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  • TAUVEX - An Ultraviolet Imager on the Indian GSAT-4 Satellite 
    Murthy, J (Astronomical Society of India, 2003)
    The TAUVEX instrument consists of three imagers operating in several bands in the mid to near UV. We have proposed to fly TAUVEX as a secondary payload on the GSAT-4 mission to be launched in late 2004 and this proposal ...
  • TAUVEX flight calibrations: Plans and challenges 
    Safonova, M; Shalima, P; Murthy, J (Astronomical Society of India, 2009-06)
    The operational tasks for the Performance Verification (PV) and calibration phase in the first year of TAUVEX operation are presented. The new challenges regarding the possible reduction in sensitivity are outlined and are ...
  • TAUVEX---UV observations from geosynchronous orbit 
    Murthy, J; Safonova, M; Mohan, Rekhesh; Gopakumar, P (Astronomical Society of India, 2007-06)
    The T Observatory consists of three identical co-aligned telescopes operating in several bands in the 1200-3500, rmAA bandpass from geostationary orbit. The major science objectives of T are (a) searches for QSOs and AGNs ...
  • Teaching of Astronomy 
    Wentzel, Donat G (Astronomical Society of India, 1973-12)
  • Teaching of Astronomy in India 
    Abhyankar, K. D (Astronomical Society of India, 1976-06)
  • Techniques for Achieving Higher Spatial Resolution 
    Sridharan, R (Astronomical Society of India, 2002-09)
    The application of speckle and interferometric techniques for imagmg small scale solar features is studIed In detail. A computer program(speckle code) was dt!v(-joped to analyze the speckle data. The capability of the ...
  • The telescope and the spectroscope 
    Sharma, D (Astronomical Society of India, 1998)
  • The telescope control system at Mt. Abu infrared observatory 
    Shah, R. R. et. al. (Astronomical Society of India, 2005-06)
    The 1.2 m Mt. Abu telescope at Gurushikhar is operated by the Astronomy & Astrophysics Division of Physical Research Laboratory, Ahmed- abad. The evolution of the telescope control system to its present form has been ...
  • Telescopes : Their design and maintenance 
    Bhatia, R; Ciani, A (Astronomical Society of India, 1998)
  • Temperature and brightness distribution in the components of binary systems 
    Barman, S. K (Astronomical Society of India, 1993-03)
    From the theoretical model of a binary system for gravity darkening (Barman 1991), the temperature and brightness distributions along the surface of the components have been calculated using the third and fourth orders of ...
  • Temperature and brightness distributions in the components of close binary system 
    Barman, S. K (Astronomical Society of India, 1991)
    A theoretical model of close binary system for the gravity-darkening due to tidally and nonuniformly rotating Roche components has been formulated using the fourth order of r/R where r is the radial distance and R is the ...
  • Temporal behaviour of emissions from gamma-ray bursts and optical/near-IR afterglows of GRB 991208 and GRB 991216 
    Sagar, R; Mohan, V; Pandey, A. K; Pandey, S. B; Castro-Tirado, A. J (Astronomical Society of India, 2000)
    The CCD magnitudes in Cousins R and I photometric passbands are determined for GRB 991216 and GRB 991208 afterglows respectively ~ 1 and ~ 3 day after trigger of the corresponding gamma-ray bursts. Light curves of the ...
  • Temporal variations of solar p-mode frequencies on time scales of 27 days 
    Tripathy, S. C; Jain, K; Bhatnagar, A (Astronomical Society of India, 2002-09)
    We have studied variations in the frequencies of intermediate degree solar oscillation modes on a time cadence of 18 and 27 days. We report that the p-modes adjust to changes in the activity measures on time scales as ...
  • Terrestrial effects of PSR 0950 + 08 (Paper 2) 
    Vats, Hari Om; Chandra, H; Deshpande, M. R; Janardhan, P; Vyas, G. D (Astronomical Society of India, 1993)
    This article presents indirect evidence that on July 29, 1992 PSR 0950 + 08 emitted a burst of X-ray emissions along with the enhanced radio pulses. This indirect evidence is seen in the form of excess absorption of HF ...
  • Testing a photographic lens 
    Royds, T (Astronomical Society of India, 1920)
  • Testing the helioseismic determination of opacity corrections 
    Tripathy, S. C; Christensen-Dalsgaard, J (Astronomical Society of India, 1998)
    We investigate the effect of localized opacity modifications on the sound-speed profile of solar models. The sound-speed difference between the Sun and a solar model is used to deduce the opacity correction that would be ...
  • Testing the mechanisms for optical micro-variability of powerful active galactic nuclei 
    Gopal-Krishna; Sagar, R; Wiita, P. J (Astronomical Society of India, 1993)
    We present the first results of a new type of observational program being carried out using the 2.34m Vainu Bappu Telescope at Kavalur. This program involves intra-night optical monitoring of radio quiet but optically ...
  • TeV Gamma-ray flares from Mkn 421 detected by the pachmarhi array of Cverenkov Telescopes 
    Bhat, P. N; Acharya, B. S; Chitnis, V. R; Majumdar, P; Rahman, M. A; Singh, B. B; Vishwanath, P. R (Astronomical Society of India, 2002)
    Pachmarhi Array of Cverenkov Telescopes (PACT), based on wavefront sampling technique, has been used for detecting TeV gamma rays from galactic and extra-galactic ?-ray sources. The Blaar, Mkn 421 was one such extra-galactic ...
  • TeV gamma-ray flux estimates from EGRET supernova remnant sources 
    Kaul, R. K (Astronomical Society of India, 2001)
    The EGRET experiment, onboard the Compton Gamma-Ray Observatory (CGRO) satellite, has provided evidence of possible ??100 MeV gamma-ray emission from ~ 22 supernova remnants through positional correlation alone. In view ...
  • Theoretical Cosmology - a Historical Survey 
    Raychaudhuri, A. K (Astronomical Society of Indian, 1987-12)

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