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  • A Single-Channel Polarimeter 
    Jain, S. K; Bhattacharyya, J. C (International Astronomical Union, 1986)
    The authors have developed a single-channel photopolarimeter to measure polarization to ≡1%, with an accuracy of 0.1%. Laboratory tests show that the performance of the instrument matches the requirements.
  • Singlet and triplet differential cross sections for pp-->ppπ0 
    Deepak, P. N; Ramachandran, G (The American Physical Society, 2002-02)
    The singlet and triplet differential cross sections for pp-->ppπ0 have been estimated for the first time at 325, 350, 375, and 400 MeV using the results of the recent experimental measurements [Phys. Rev. C 63, 064002 ...
  • SiO maser survey of AGB stars in the North Galactic Cap 
    Ita, Y; Deguchi, S; Fujii, T; Kameya, O; Miyoshi, M; Nakada, Y; Nakashima, J; Parthasarathy, M (EDP Sciences, 2001-09)
    A SiO maser survey in the J=1-0, v=1 and 2 transitions has been made for IRAS sources in the North Galactic Cap b > 30o) with the Nobeyama 45 m radio telescope. The sources were selected on the basis of their IRAS 12/25-μm ...
  • Site characterisation for the IUCAA telescope 
    Das, H. K; Menon, S. M; Paranjpye, A; Tandon, S. N (Astronomical Society of India, 1999)
    We present the report on characterisation of the site for IUCAA telescope, which was conducted during October '96 to April '97. The main points highlighted are the results on : seeing, contribution of atmospheric turbulence ...
  • Site characteristics of The Indian Astronomical Observatory, Hanle 
    Bhatt, B. C; Prabhu, T. P; Anupama, G. C (Astronomical Society of India, 2000)
    A brief summary of site characteristics of Indian Astronomical Observatory, Hanle, Ladakh (altitude 4500 m), is presented based on a survey being carried out since the last four years.
  • Site characterization for the UPSO-TIFR telescope 
    Sagar, R; Uddin, W; Pandey, A. K; Stalin, C. S; Mohan, V; Sanwal, B. B; Gupta, S. K; Yadav, R. K. S; Durgapal, A. K; Joshi, S; Kumar, B; Gupta, A. C; Joshi, Y; Srivastava, J. B; Chaubey, U. S; Singh, M; Pant, P; Gupta, K. G; Padalia, T. D (Astronomical Society of India, 2000)
    The Uttar Pradesh State Observatory, Naini Tal and Tata Institute of Fundamental Research, Mumbai plan to install jointly a 3 metre size optical telescope at Devasthal located east of Naini Tal about 50 km by road. The ...
  • Site Evaluation Study for the Indian National Large Solar Telescope Using Microthermal Measurements 
    Dhananjay, K (Oxford University Press on behalf of the Royal Astronomical Society, 2014-01-21)
    A microthermal seeing measurement device has been developed in-house to measure the temperature structure function DT(r, h) and the air temperature Tair(h). A pressure sensor, located adjacent to it, measures the average ...
  • Site survey for an infrared observatory 
    Bhatnagar, A (Centre of Advanced Study in Astronomy, Osmania University, Hyderabad, 1974)
  • Site-selection studies at Gurushikar, Mt. Abu for project 'GRACE' 
    Sapru, M. L; Bhat, C. L; Kaul, M. K; Kaul, S. K; Kaul, S. R; Dhar, V. K; Kaul, R. K; Rannot, R. C; Tickoo, A. K (Astronomical Society of India, 1993)
    Holding the promise of yielding up to 1150 hrs of good-quality atmospheric Cerenkov data per calendar year, Gurushikar in Mt. Abu, Rajasthan, offers itself as a good observatory site for our proposed new gamma-ray astrophysics ...
  • Site-survey inputs for the Himalayan Infra-red/Optical Telescope (HIROT) using INSAT cloud imagery data 
    Sapru, M. L; Kaul, R. K; Bhat, C. L; Mohapatra, D. K (Astronomical Society of India, 1998-12)
  • Size of the Ca+ Coarse Network in the Solar Chromosphere at Sunspot Minimum 
    Bappu, M. K. V; Sivaraman, K. R (1966)
    Auto-correlation measures of the coarse Ca+ network made on selected spectroheliograms obtained during the solar minimum period of 1964 and 1965 are described. The full width at half maximum of the normalised A.C. curve ...
  • Sizing up the universe with cosmic illusions 
    Chitre, S. M (Astronomical Society of India, 1994)
    The role of gravitational lenses as valuable tools for astrophysics and cosmology is highlighted. The importance of studying gravitational lens systems for inferring the nature and distribution of gravitating matter, both ...
  • Sketches of Jupiter 
    Mitchell, J (Astronomical Society of India, 1913-07)
  • Sky conditions for infrared observations at Kavalur 
    Scaria, K. K; Nair, R. M; Sivaraman, K. R (Astronomical Society of India, 1991)
    The extinction coefficients in the J, H, K near-IR bands are presented that were derived for Kavalur during the years 1987, 1988, and 1989. Humidity and temperature observations made at Kavalur during these years are used ...
  • Sky transparency over Naini Tal : A retrospective study 
    Kumar, B; Sagar, R; Rautela, B. S; Srivastava, J. B; Srivastava, R. K (Astronomical Society of India, 2000)
    We present an analysis of the atmospheric extinction coefficients measured during 1964 to 1999 in broad-band photometric passbands at U.P. State Observatory, Naini Tal. The extinction properties are also studied from the ...
  • The sky was his limit! 
    Sivaram, C (Deccan Herald, 2010-10-19)
    October 18 was the birth centenary of the Physics Nobel Prize winner for 1983 S Chandrasekhar. The astrophysicist has come to be known for the Chandrasekhar limit, which concerns a class of stars called white dwarfs. The ...
  • The slicer combined with array of lenslets for exoplanet spectroscopy (SCALES): driving science cases and expected outcomes 
    Sallum, Steph; Skemer, Andrew; Stelter, Deno; Banyal, R. K; Batalha, Natalie; Batalha, Natasha; Blake, Geoff; Brandt, Tim; Briesemeister, Zack; Kleer, Katherine de; Pater, Imke de; Desai, Aditi; Eisner, Josh; Fong, Wen-fai; Greene, Tom; Honda, Mitsuhiko; Jensen-Clem, Rebecca; Kain, Isabel; Kilpatrick, Charlie; Kupke, Renate; Lach, Mackenzie; Liu, Michael C; Macintosh, Bruce; Martinez, Raquel A; Mawet, Dimitri; Miles, Brittany; Morley, Caroline; Powell, Diana; Sethuram, Ramya; Sheehan, Patrick; Spilker, Justin; Stone, Jordan; Surya, Arun; Sivarani, T; Unni, Athira; Wagner, Kevin; Zhou, Yifan (SPIE-The International Society for Optical Engineering, 2023-10)
    The Slicer Combined with Array of Lenslets for Exoplanet Spectroscopy (SCALES) is a 2 − 5 µm, high-contrast integral field spectrograph (IFS) currently being built for Keck Observatory. With both low (R ≲ 250) and medium ...
  • Slip rates of the Karakorum fault, Ladakh, India, determined using cosmic ray exposure dating of debris flows and moraines 
    Brown, E. T; Bendick, R; Bourlès, D. L; Gaur, V. K; Molnar, P; Raisbeck, G. M; Yiou, F (American Geophysical Union, 2002-09)
    We measure an average slip rate of 4 +/- 1 mm yr-1 along the Karakorum fault, heretofore considered one of Earth's greatest strike-slip faults and thought by many to play a key role in Asian deformation kinematics. Levees ...
  • The Sloan Digital Sky Survey Quasar Catalog: Sixteenth Data Release 
    Lyke, Brad W; Higley, Alexandra N; McLane, J. N; Schurhammer, D. P; Myers, A. D; Ross, A. J; Dawson, K; Chabanier, S; Martini, P; Busca, N. G; Mas des Bourboux, Helion du; Salvato, Mara; Streblyanska, A; Zarrouk, P; Burtin, E; Anderson, S. F; Bautista, J; Bizyaev, D; Brandt, W. N; Brinkmann, J; Brownstein, J. R; Comparat, J; Green, Paul; de la Macorra, Axel; Munoz Gutierrez, Andrea; Hou, Jiamin; Newman, J. A; Palanque-Delabrouille, N; Paris, I; Percival, W. J; Petitjean, P; Rich, J; Rossi, G; Schneider, D. P; Smith, Alexander; Vivek, M; Weaver, Benjamin A (IOP Publishing, 2020-09)
    We present the final Sloan Digital Sky Survey IV (SDSS-IV) quasar catalog from Data Release 16 of the extended Baryon Oscillation Spectroscopic Survey (eBOSS). This catalog comprises the largest selection of spectroscopically ...
  • Small scale clustering of late forming dark matter 
    Agarwal, S; Corasaniti, P.-S; Das, Subinoy; Rasera, Y (The American Physical Society, 2015-09-15)
    We perform a study of the nonlinear clustering of matter in the late-forming dark matter (LFDM) scenario in which dark matter results from the transition of a nonminimally coupled scalar field from radiation to collisionless ...

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