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Browsing by Author "Pati, A. K"

Browsing by Author "Pati, A. K"

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  • IIA Newsletter, Vol.4, No.3, July 1989 
    Prabhu, T. P; Pati, A. K (Indian Institute of Astrophysics, 1989-07)
  • IIA Newsletter, Vol.4, No.4, October 1989 
    Prabhu, T. P; Pati, A. K (Indian Institute of Astrophysics, 1989-10)
  • IIA Newsletter, Vol.5, No.1, January 1990 
    Prabhu, T. P; Pati, A. K (Indian Institute of Astrophysics, 1990-01)
  • IIA Newsletter, Vol.5, No.2, April 1990 
    Prabhu, T. P; Pati, A. K (Indian Institute of Astrophysics, 1990-04)
  • IIA Newsletter, Vol.5, No.3, July 1990 
    Prabhu, T. P; Pati, A. K (Indian Institute of Astrophysics, 1990-07)
  • IIA Newsletter, Vol.5, No.4, October 1990 
    Prabhu, T. P; Pati, A. K (Indian Institute of Astrophysics, 1990-10)
  • IIA Newsletter, Vol.6, No.1, January 1991 
    Prabhu, T. P; Pati, A. K (Indian Institute of Astrophysics, 1991-01)
  • IIA Newsletter, Vol.6, No.2, April 1991 
    Prabhu, T. P; Pati, A. K (Indian Institute of Astrophysics, 1991-04)
  • IIA Newsletter, Vol.6, No.3, July 1991 
    Prabhu, T. P; Pati, A. K (Indian Institute of Astrophysics, 1991-07)
  • IIA Newsletter, Vol.6, No.4, October 1991 
    Prabhu, T. P; Pati, A. K (Indian Institute of Astrophysics, 1991-10)
  • IIA Newsletter, Vol.7, Nos.1 & 2, April 1992 
    Prabhu, T. P; Pati, A. K (Indian Institute of Astrophysics, 1992-04)
  • IIA Newsletter, Vol.7, Nos.3 & 4, October 1992 
    Prabhu, T. P; Pati, A. K (Indian Institute of Astrophysics, 1992-10)
  • IIA Newsletter, Vol.8, Nos.1-3, July 1993 
    Prabhu, T. P; Pati, A. K (Indian Institute of Astrophysics, 1993-07)
  • IIA Newsletter, Vol.9, Nos.1-2, April 1994 
    Prabhu, T. P; Pati, A. K (Indian Institute of Astrophysics, 1994-04)
  • In-orbit Calibrations of the Ultraviolet Imaging Telescope 
    Tandon, S. N; Subramaniam, A; Girish, V; Postma, J; Sankarasubramanian, K; Sriram, S; Stalin, C. S; Mondal, Chayan; Sahu, S; Joseph, P; Hutchings, J; Ghosh, S. K; Barve, Indrajit V; George, K; Kamath, P. U; Kathiravan, S; Kumar, A; Lancelot, J. P; Leahy, D; Mahesh, P. K; Mohan, Rekhesh; Nagabhushana, S; Pati, A. K; Kameswara Rao, N; Sreedhar, Yuvraj Harsha; Sreekumar, P (IOP Publishing, 2017-09)
    The Ultra-Violet Imaging Telescope (UVIT) is one of the payloads in ASTROSAT, the first Indian Space Observatory. The UVIT instrument has two 375 mm telescopes: one for the far-ultraviolet (FUV) channel (1300–1800 Å), ...
  • In-orbit performance of UVIT and first results 
    Tandon, S. N; Hutchings, J. B; Ghosh, S. K; Subramaniam, A; George, K|; Girish, V; Kamath, P. U; Kathiravan, S; Kumar, A; Lancelot, J.P; Mahesh, P. K; Mohan, Rekhesh; Murthy, J; Nagabhushana, S; Pati, A. K; Postma, J; Kameswara Rao, N; Sankarasubramanian, K; Sreekumar, P; Sriram, S; Stalin, C. S; Sutaria, F. K; Sreedhar, Yuvraj Harsha; Barve, Indrajit V; Mondal, Chayan; Snehalata Sahu (Indian Academy of Sciences, 2017-06)
    The performance of the ultraviolet telescope (UVIT) on-board AstroSat is reported. The performance in orbit is also compared with estimates made from the calibrations done on the ground. The sensitivity is found to be ...
  • In-orbit performance of UVIT over the past 5 years 
    Ghosh, S. K; Joseph, P; Kumar, A; Postma, J; Stalin, C. S; Subramaniam, A; Tandon, S. N; Barve, Indrajit V; Devaraj, A; George, K; Girish, V; Hutchings, J. B; Kamath, P. U; Kathiravan, S; Lancelot, J. P; Leahy, D; Mahesh, P. K; Mohan, R; Nagabhushana, S; Pati, A. K; Kameswara Rao, N; Sankarasubramanian, K; Sreekumar, P; Sriram, S (Indian Academy of Sciences, 2021-10)
    Over the last 5 years, UVIT has completed observations of more than 500 proposals with ∼800 unique pointings. In addition, regular planned monitoring observations have been made and from their analysis various key parameters ...
  • Large-scale Wind Structures in OB Supergiants: a Search for Rotationally Modulated Hα variability 
    Morel, T; Marchenko, S. V; Pati, A. K; Kuppuswamy, K; Carini, M. T (Astronomical Society of India, 2003)
    We present preliminary results of a long-term spectroscopic monitoring of a sample of bright OB-supergiants aimed at establishing the incidence of co-rotating, large-scale wind structures by detecting rotationally modulated ...
  • Large-scale wind structures in OB supergiants: a search for rotationally modulated Hα variability 
    Morel, T; Marchenko, S. V; Pati, A. K; Kuppuswamy, K; Carini, M. T; Wood, E; Zimmerman, R (The Royal Astronomical Society, 2004-06)
    We present the results of a long-term monitoring campaign of the Hα line in a sample of bright OB supergiants (O7.5-B9) which aims at detecting rotationally modulated changes potentially related to the existence of large-scale ...
  • Lithium and rotation in F and G dwarfs and subgiants 
    Mallik, S. G. V; Parthasarathy, M; Pati, A. K (The European Southern Observatory, 2003-10)
    Lithium abundances have been determined in 127 F and G Pop I stars based on new measurements of the equivalent width of the 6707 Å Li I line from their high resolution CCD spectra. Distances and absolute magnitudes of these ...

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