IIAP Publications: Recent submissions

  • Variation of light intensity during the total solar eclipse 
    Dutta, A (Indian Institute of Astrophysics, Bangalore, 1997)
    The variation of light intensity was recorded at Birla Industrial & technology Museum, Calcutta using a moving coli galvanometer and LDR on the eclipse day and one day prior to the eclipse. It was found that there was a ...
  • COSMOGRAIL: Measuring Time Delays of Gravitationally Lensed Quasars to Constrain Cosmology 
    Tewes, M; Courbin, F; Meylan, G; Kochanek, C. S; Eulaers, E; Cantale, N; Mosquera, A. M; Asfandiyarov, I; Magain, P; Van Winckel, H; Sluse, D; Keerthi, R. K. S; Stalin, C. S; Prabhu, T. P; Saha, P; Dye, S (ESO, 2012-12)
    COSMOGRAIL is a long-term programme for the photometric monitoring of gravitationally lensed quasars. It makes use of several medium-size telescopes to derive long and well-sampled light curves of lensed quasars, in order ...
  • ISOGAL: A deep survey of the obscured inner Milky Way with ISO at 7 mu m and 15 mu m and with DENIS in the near-infrared 
    Omont, A; Gilmore, G. F; Alard, C; Aracil, B; August, T; Baliyan, K; Beaulieu, S; Begon, S; Bertou, X; Blommaert, J. A. D. L; Borsenberger, J; Burgdorf, M; Caillaud, B; Cesarsky, C; Chitre, A; Copet, E; de Batz, B; Egan, M. P; Egret, D; Epchtein, N; Felli, M; Fouque, P; Ganesh, S; Genzel, R; Glass, I. S; Gredel, R; Groenewegen, M. A. T; Guglielmo, F; Habing, H. J; Hennebelle, P; Jiang, B; Joshi, U. C; Kimeswenger, S; Messineo, M; Miville-Deschenes, M. A; Moneti, A; Morris, M; Ojha, D. K; Ortiz, R; Ott, S; Parthasarathy, M; Perault, M; Price, S. D; Robin, A. C; Schultheis, M; Schuller, F; Simon, G; Soive, A; Testi, L; Teyssier, D; Tiphene, D; Unavane, M; van Loon, J. T; Wyse, R (EDP Sciences, 2003-06)
    The ISOGAL project is an infrared survey of specific regions sampling the Galactic Plane selected to provide information on Galactic structure, stellar populations, stellar mass-loss and the recent star formation history ...
  • Structure of the Large Magellanic Cloud from near infrared magnitudes of red clump stars 
    Subramanian, S; Subramaniam, A (EDP Sciences, 2013-04)
    Context. The structural parameters of the disk of the Large Magellanic Cloud (LMC) are estimated. Aims. We used the JH photometric data of red clump (RC) stars from the Magellanic Cloud Point Source Catalog (MCPSC) ...
  • Comprehensive abundance analysis of red giants in the open clusters NGC 2527, 2682, 2482, 2539, 2335, 2251 and 2266 
    Reddy, A. B. S; Giridhar, S; Lambert, D. L (Oxford University Press on behalf of the Royal Astronomical Society, 2013-06-01)
    We have analysed high-resolution echelle spectra of red giant members for seven open clusters in the Galactic anticentre direction to explore their chemical compositions. Cluster membership has been confirmed by radial ...
  • Observations and Modeling of the Emerging Extreme-Ultraviolet Loops in the Quiet Sun as Seen With the Solar Dynamics Observatory 
    Pradeep Chitta, L; Kariyappa, R; Van Ballegooijen, A. A; DeLuca, E. E; Hasan, S. S; Hanslmeier, A (IOP Publishing, 2013-05-01)
    We used data from the Helioseismic and Magnetic Imager (HMI) and the Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory (SDO) to study coronal loops at small scales, emerging in the quiet Sun. With HMI ...
  • India's National Large Solar Telescope 
    Hasan, S. S (Astronomical Society of the Pacific, 2012)
    India's 2-m National Large Solar Telescope (NLST) is aimed primarily at carrying out observations of the solar atmosphere with high spatial and spectral resolution. A comprehensive site characterization program, that ...
  • Planets in the early Universe 
    Shchekinov, Y. A; Safonova, M; Murthy, J (Springer, 2013-07)
    Several planets have recently been discovered around stars that are old and metal-poor, implying that these planets are also old, formed in the early Universe together with their hosts. The canonical theory suggests that ...
  • Is there lower limit to velocity or velocity change? 
    Sreenath, B.N; Arun, K; Sivaram, C (Springer, 2013-05)
    Here we explore the possibility of a lower limit to velocity or velocity change which is 20 orders of magnitude smaller than the speed of light and explore the various observable signatures including those in cosmic rays ...
  • Reddening and dust distribution around V348 SGR 
    Kameswara Rao, N; Nandy, K (Bruxelles : Palais des Académies, 1988)
    Radio and Brackett gamma observations indicate large value of reddening E(B - V) = 1.5 to the nebula surrounding V348 Sgr, where as the star appears to be reddened by only E(B - V) is approximately 0.4. The infrared ...
  • Multi-dimensional Radiative Transfer to Analyze Hanle Effect in Ca II K Line at 3933 Å 
    Anusha, L. S; Nagendra, K. N (IOP Publishing, 2013-04-20)
    Radiative transfer (RT) studies of the linearly polarized spectrum of the Sun (the second solar spectrum) have generally focused on line formation, with an aim to understand the vertical structure of the solar atmosphere ...
  • Photometric observations of solar corona during total solar eclipse of October 24, 1995 
    Kumar, S. S; Sharma, P; Devgun, C. B (Indian Institute of Astrophysics, Bangalore, 1997)
    Twenty pictures of solar corona were taken on October 24, 1995 from Bhind on the central line of totality, covering a wide range of exposure times a 500mm telephoto lens captured Images on 35mm film duly calibrated. This ...
  • Observations on the Unusual States in the Normal Patterns of the Private Behavior During the Total Solar Eclipse 
    Parthasarathy, M. D; Kulkarni, A. G (Indian Institute of Astrophysics, Bangalore, 1997)
    Systematically planned observations conclusively reveal that sudden and large natural changes in the ambient light conditions during a total solar eclipse for a few minutes, initiates and cause marked alterations in the ...
  • γ and X ray measurements during total solar eclipse on October 24, 1995 at Diamond Harbour 
    Chintalapudi, S. N; Ghosh, V; Krishna, J. B. M; Verman, J. R; Prakash, H; Pal, G; Mishra, N. R; Bera, M; Reddy, V. R; Ranganath, M. R; Majumdar, C. K (Indian Institute of Astrophysics, Bangalore, 1997)
    The γ-ray and X-ray background was measured at Diamond Harbor located on the total eclipse phase path, during total solar eclipse (TSE) which occurred on October 24, 1995. The data taken by two high resolution γ-ray ...
  • Video recording of the flash spectrum during the total solar eclipse October 24, 1995 
    Trivedi, P; Guruprasad, R; Radhakrishnan, R. S (Indian Institute of Astrophysics, Bangalore, 1997)
    Flash spectra were recorded at video rate from Behind, Madhya Pradesh A holographic transmission grating, was used in front of a CCD video camera. Using a. solar Image of 0 5mm diameter, the spectrum on the CCD was recorded ...
  • High-altitude ballooning programme at the Indian Institute of Astrophysics 
    Akshata Nayak; Sreejith, A. G; Safonova, M; Murthy, J (Indian Academy of Sciences, 2013-03-25)
    Recent advances in balloons and in electronics have made possible scientific payloads at costs accessible to university departments. The primary purpose of high-altitude ballooning programme is to test low-cost ultraviolet ...
  • Gender diversity in physics in India: Interventions so far and recommendations for the future 
    Shastri, P; Ramaswamy, R; Narasimhan, S; Rao, S; Ubale, S; Kulkarni, S (American Institute of Physics, 2013-03)
    Several governmental policy initiatives have already taken shape in India during the last few years to address the gender imbalance in the sciences. These initiatives and the barriers to gender inequity that persist in ...
  • Light curve and spectral evolution of the Type IIb supernova 2011fu 
    Kumar, Brajesh; Pandey, S. B; Sahu, D. K; Vinko, J; Moskvitin, A. S; Anupama, G. C; Bhatt, V. K; Ordasi, A; Nagy, A; Sokolov, V. V; Sokolova, T. N; Komarova, V. N; Kumar, Brijesh; Bose, S; Roy, R; Sagar, R (Oxford University Press on behalf of the Royal Astronomical Society, 2013-05-01)
    We present the low-resolution spectroscopic and UBVRI broad-band photometric investigations of the Type IIb supernova (SN) 2011fu, discovered in UGC 01626. The photometric follow-up of this event was initiated a few days ...
  • Opto-thermal analysis of a lightweighted mirror for solar telescope 
    Banyal, R. K; Ravindra, B; Chatterjee, S (Optical Society of America, 2013-03-25)
    In this paper, an opto-thermal analysis of a moderately heated lightweighted solar telescope mirror is carried out using 3D finite element analysis (FEA). A physically realistic heat transfer model is developed to account ...
  • Large scale extinction maps with UVIT 
    Ravichandran, S; Preethi, K; Safonova, M; Murthy, J (Springer, 2013-04)
    The Ultraviolet Imaging Telescope (UVIT) is scheduled to be launched as a part of the ASTROSAT satellite. As part of the mission planning for the instrument we have studied the efficacy of UVIT observations for interstellar ...

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