IIAP Publications: Recent submissions

  • 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 ...
  • Extended Equivalence Principle: Implications for Gravity, Geometry and Thermodynamics 
    Sivaram, C; Arun, K (Handronic Press Inc, 2012)
    The equivalence principle was formulated by Einstein in an attempt to extend the concept of inertial frames to accelerated frames. Thereby bringing in gravity. In recent decades, it has been realized that gravity is linked ...
  • Thermal structure of coronal loops as seen with Norikura coronagraph 
    Krishna Prasad, S; Singh, J; Ichimoto, K (IOP Publishing, 2013-03-10)
    The thermal structure of a coronal loop, both along and across the loop, is vital in determining the exact plasma heating mechanism. High-resolution spectroscopic observations of the off-limb corona were made using the ...
  • Residual foreground contamination in the WMAP data and bias in non-Gaussianity estimation 
    Pravabati, C; Park, C (IOP Publishing, 2013-02)
    We analyze whether there is any residual foreground contamination in the cleaned WMAP 7 years data for the differential assemblies, Q, V and W. We calculate the correlation between the foreground map, from which long ...
  • Does a prestellar core always become Tracing? protostellar the evolution of cores from the prestellar to protostellar phase 
    Anathpindika, S; Di Francesco, J (Oxford University Press on behalf of the Royal Astronomical Society, 2013-04-11)
    Recently, a subset of starless cores whose thermal Jeans mass is apparently overwhelmed by the mass of the core has been identified, e.g. the core L183. In the literature, massive cores such as this one are often referred ...
  • Recent star formation history of the Large and Small Magellanic Clouds 
    Indu, G; Subramaniam, A (Astronomical Society of India, 2012)
    Recent interactions between the Large and the Small Magellanic Clouds (LMC and SMC) and the Milky Way can be understood by studying their recent star formation history. We traced the age of the last star-formation event ...
  • Upcoming Indian facility: UVIT on ASTROSAT 
    Subramaniam, A (Astronomical Society of India, 2012)
    An overview of the upcoming ASTROSAT mission with its five instruments on board is presented. UVIT instrument is discussed in detail along with the ground calibrations and plans for in-orbit calibrations. The UVIT filter ...
  • Star formation in blue compact dwarf Galaxies 
    Ramya, S; Prabhu, T. P; Sahu, D. K (Astronomical Society of India, 2012)
    Blue compact dwarf galaxies (BCDGs) are dwarfs undergoing current burst of star formation (SF). In our work, we determine the ages of the underlying old stellar population to be ∼4 Gyr that is dominating the mass of the ...
  • Star formation in bulgeless late type spiral Galaxies 
    Das, M; Ramya, S; Sengupta, C; Mishra, K (Astronomical Society of India, 2012)
    We present radio and follow-up optical observations of a sample of bulgeless late type spiral galaxies. We searched for signs of nuclear activity and disk star formation in the sample galaxies. Interaction induced star ...
  • Extragalactic star formation rate -- estimates at different wavelengths 
    Prabhu, T. P (Astronomical Society of India, 2012)
    The star formation rate (SFR) in galaxies is of prime importance in the study of formation and evolution of galaxies. Different methods have hence been evolved to estimate the current SFR in galaxies, using indicators at ...

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