IIAP Publications: Recent submissions

  • The M31 pixel lensing plan campaign: macho lensing and self-lensing signals 
    Novati, S. C; Bozza, V; Bruni, I; Dall'Ora, M; Paolis, F. D; Dominik, M; Gualandi, R; Ingrosso, G; Jetzer, P; Mancini, L; Nucita, A; Safonova, M; Scarpetta, G; Sereno, M; Strafella, F; Subramaniam, A; Gould, A (IOP Publishing, 2014-03-10)
    We present the final analysis of the observational campaign carried out by the PLAN (Pixel Lensing Andromeda) collaboration to detect a dark matter signal in form of MACHOs through the microlensing effect. The campaign ...
  • O VI absorption in the milky way along the large magellanic cloud lines of sight 
    Sarma, R; Pathak, A; Pradhan, A. C; Murthy, J; Sarma, J. K (Elsevier B.V, 2014-03-15)
    We have used Far Ultraviolet Spectroscopic Explorer (FUSE) observations of the Large Magellanic Cloud (LMC) to determine the O vi column densities in the Milky Way (MW) towards 6 LMC lines of sight. The mean column density ...
  • The dynamical behaviour of a jet in an on-disk coronal hole observed with AIA/SDO 
    Chandrashekhar, K; Morton, R. J; Banerjee, D; Gupta, G. R (EDP Sciences, 2014-02)
    Aims. Extreme ultraviolet (EUV) jets situated in coronal holes are thought to play an important role in supplying heated material to the corona and solar wind. The multi-wavelength capabilities and high signal-to-noise ...
  • Bhavnagar telescope: the most widely travelled telescope in the country 
    Kameswara Rao, N; Vagiswari, A; Birdie, C (Indian Academy of Sciences, 2014-02-25)
    In the last decade of the 19th century Maharaja Takhtasingji Observatory was built at Poona (1888–1912) under the supervision of K. D. Naegamvala, with the grant from Maharaja of Bhavnagar (from where the name Bhavnagar ...
  • Photometric and spectroscopic studies of star-forming regions within Wolf–Rayet galaxies 
    Karthick, M. C; Lopez-Sanchez, A. R; Sahu, D. K; Sanwal, B. B; Bisht, S (Oxford University Press on behalf of the Royal Astronomical Society, 2014-03-21)
    We present a study of the properties of star-forming regions within a sample of seven Wolf–Rayet (WR) galaxies. We analyse their morphologies, colours, star-formation rates (SFRs), metallicities and stellar populations, ...
  • Charles Michie Smith – founder of the Kodaikanal (Solar Physics) Observatory and beginnings of physical astronomy in India 
    Kameswara Rao, N; Vagiswari, A; Birdie, C (Indian Academy of Sciences, 2014-02-10)
    It has been about 115 years since the establishment of Kodaikanal Observatory as an extension of the original Madras Observatory, which has evolved into the present Indian Institute of Astrophysics at Bangalore. It is ...
  • On the line profile changes observed during the X2.2 class flare in the active region NOAA 11158 
    Bayanna, A. R; Kumar, B; Venkatakrishnan, P; Mathew, S. K; Ravindra, B; Mathur, S; Garcia, R. A (IOP Publishing, 2014-02)
    The solar active region NOAA 11158 produced a series of flares during its passage through the solar disk. The first major flare (of class X2.2) of the current solar cycle occurred in this active region on 2011 February 15 ...
  • Network and plage indices from Kodaikanal Ca-K data 
    Raju, K. P; Singh, J (IOP Publishing, 2014-02)
    The Ca II K filtergrams from Kodaikanal Solar Observatory have been used to study solar activity. The images are dominated by the chromospheric network and plages. Programs have been developed to obtain the network and ...
  • Devendra Lal (1929–2012) 
    Sreekantan, B. V; Gaur, V. K (Indian Academy of Sciences, 2013-02-10)
  • Robust inversion of carbon dioxide fluxes over temperate Eurasia in 2006–2008 (201) 
    Swathi, P. S; Indira, N. K; Rayner, P. J; Ramonet, M; Jagadheesha, D; Bhatt, B. C; Gaur, V. K (Indian Academy of Sciences, 2013-07-25)
    Carbon dioxide (CO2) fluxes over the temperate Eura-sian region have been estimated robustly for the period 2006–2008 using the time-dependent inversion com-ponent of the TRANSCOM protocol. Data from six CO2 measuring ...
  • Higgs boson 
    Sivaram, C (Indian Academy of Sciences, 2012-10-25)
  • Electron Cooling in a Young Radio Supernova: SN 2012aw 
    Yadav, N; Ray, A; Chakraborti, S; Stockdale, C; Chandra, P; Smith, R; Roy, R; Bose, S; Dwarkadas, V; Sutaria, F. K; Pooley, D (IOP Publishing, 2014-02-10)
    We present the radio observations and modeling of an optically bright Type II-P supernova (SN), SN 2012aw which exploded in the nearby galaxy Messier 95 (M95) at a distance of 10 Mpc. The spectral index values calculated ...
  • Physical and Optical Properties of Aerosols in a Free Tropospheric Environment: Results From Long-Term Observations Over Western Trans-Himalayas 
    Gogoi, M. M; Moorthy, K. K; Kompalli, S. K; Chaubey, J. P; Babu, S. S; Manoj, M.R; Nair, V. S; Prabhu, T. P (Elsevier B.V., 2014-02)
    Simultaneous and collocated estimates of near-surface mass concentration of black carbon (BC), number size distribution (NSD) and total number concentration (NT) of composite aerosols, columnar spectral aerosol optical ...
  • Characteristics of Polar Coronal Hole Jets 
    Chandrashekhar, K; Bemporad, A; Banerjee, D; Gupta, G. R; Teriaca, L (EDP Sciences, 2014-01)
    Context. High spatial- and temporal-resolution images of coronal hole regions show a dynamical environment where mass flows and jets are frequently observed. These jets are believed to be important for the coronal heating ...
  • Variable Stars in the Globular Cluster NGC 288: [Fe/H] and Distance 
    Ferro, A. A; Bramich, D.M; Giridhar, S; Jaimes, R. F; Kains, N; Kuppuswamy, K (Copernicus Foundation for Polish Astronomy, 2013-12)
    A search for variable stars in the globular cluster NGC 288 was carried out using a time-series of CCD images in the V and I filters. The photometry of all stellar sources in the field of view of our images, down to V≈19 ...
  • Scientific Programmes with India's National Large Solar Telescope and their contribution to Prominence Research 
    Hasan, S. S (Cambridge University Press, 2014-01)
    The primary objective of the 2-m National Large Solar Telescope (NLST) is to study the solar atmosphere with high spatial and spectral resolution. With an innovative optical design, NLST is an on-axis Gregorian telescope ...
  • Dust properties from GALEX observations of a UV halo around Spica 
    Shalima, P; Murthy, J; Gupta, R (Terra Scientific Publishing Company, 2013-10-24)
    GALEX has detected ultraviolet halos extending as far as 5° around four bright stars (Murthy and Henry, 2011). These halos are produced by scattering of starlight by dust grains in thin foreground clouds that are not ...
  • Segmentation of Coronal Features to Understand the Solar EUV and UV Irradiance Variability 
    Kumara, S. T; Kariyappa, R; Zender, J. J; Giono, G; Delouille, V; Pradeep Chitta, L; Dame, L; Hochedez, J. F; Verbeeck, C; Mampaey, B; Doddamani, V. H (EDP Sciences, 2014-01)
    Context. The study of solar irradiance variability is of great importance in heliophysics, the Earth’s climate, and space weather applications. These studies require careful identifying, tracking and monitoring of active ...
  • Myopic aberrations: Simulation based comparison of curvature and Hartmann Shack wavefront sensors 
    Roopashree, M. B; Vyas, A; Weddell, S. J; Prasad, B. R (Elsevier B.V., 2014-02-01)
    In comparison with a Hartmann Shack wavefront sensor, the curvature wavefront sensor is known for its higher sensitivity and greater dynamic range. The aim of this study is to numerically investigate the merits of using a ...
  • Filament Eruption in Association with Rotational Motion Near the Filament Footpoints 
    Dhara, Sajal Kumar; Ravindra, B; Banyal, R. K (Elsevier B.V., 2014-01)
    The active region magnetic field surrounding the filament plays an important role in filament formation, their evolution and disruption. We investigated a filament eruption that occurred in southern hemisphere of the Sun ...

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