IIAP Publications: Recent submissions

  • X-ray and optical properties of broad absorption line quasars in the Canada–France–Hawaii Telescope Legacy Survey 
    Stalin, C. S; Srianand, R; Petitjean, P (Wiley-Blackwell, 2011-05)
    We study the X-ray and optical properties of 16 broad absorption line (BAL) quasars detected in a ≈3 deg2 region common to the wide synoptic (W-1) component of the Canada–France–Hawaii Telescope Legacy Survey (CFHTLS) and ...
  • CCD time-series photometry of the globular cluster NGC 6981: variable star census and physical parameter estimates 
    Bramich, D. M; Figuera Jaimes, R; Giridhar, S; Arellano Ferro, A (Wiley-Blackwell, 2011-05)
    We present the results from 10 nights of observations of the globular cluster NGC 6981 (M72) in the V, R and I Johnson wavebands. We employed the technique of difference image analysis to perform precision differential ...
  • Stardust-NExT, Deep Impact, and the accelerating spin of 9P/Tempel 1 
    Belton, M. J. S; Meech, K. J; Chesley, S; PittichovĆ, J; Carcich, B; Drahus, M; Harris, A; Gillam, S; Veverka, J; Mastrodemos, N; Owen, W; A’Hearn, M. F; Bagnulo, S; Bai, J; Barrera, L; Bastien, F; Bauer, J. M; Bedient, J; Bhatt, B. C; Boehnhardt, H; Brosch, N; Buie, M; Candia, P; Chen, W; Chiang, P; Choi, Y; Cochran, A; Crockett, C. J; Duddy, S; Farnham, T; Fernández, Y. R; Gutiérrez, P; Hainaut, O. R; Hampton, D; Herrmann, K. A; Hsieh, H; Kadooka, M. A; Kaluna, H; Keane, J; Kim, M; Klaasen, K; Kleyna, J; Krisciunas, K; Lara, L. M; Lauer, T. R; Li, J; Licandro, J; Lisse, C. M; Lowry, S. C; McFadden, L; Moskovitz, N; Mueller, B; Polishook, D; Raja, N. S; Riesen, T; Sahu, D. K; Samarasinha, N; Sarid, G; Sekiguchi, T; Sonnett, S; Suntzeff, N. B; Taylor, B. W; Thomas, P; Tozzi, G. P; Vasundhara, R; Vincent, J; Wasserman, L. H; Webster-Schultz, B; Yang, B; Zenn, T; Zhao, H (Elsevier B.V., 2011-05)
    The evolution of the spin rate of Comet 9P/Tempel 1 through two perihelion passages (in 2000 and 2005) is determined from 1922 Earth-based observations taken over a period of 13 year as part of a World-Wide observing ...
  • Long-term variations in the growth and decay rates of sunspot groups 
    Javaraiah, J (Springer, 2011-06)
    Using the combined Greenwich (1874 – 1976) and Solar Optical Observatories Network (1977 – 2009) data on sunspot groups, we study the long-term variations in the mean daily rates of growth and decay of sunspot groups. ...
  • Electronic structure reference calculations for designing and interpreting P and T violation experiments 
    Nayak, M. K; Chaudhuri, R. K (John Wiley & Sons Inc.,, 2008)
  • Simultaneous solution of Kompaneets equation and radiative transfer equation in the photon energy range 1–125 keV 
    Peraiah, A; Srinivasa Rao, M; Varghese, B. A (Elsevier, 2011-03)
    Radiative transfer equation in plane parallel geometry and Kompaneets equation is solved simultaneously to obtain theoretical spectrum of 1–125 keV photon energy range. Diffuse radiation field are calculated using ...
  • A tale of two GRB-SNe at a common redshift of z=0.54 
    Cano, Z; Bersier, D; Guidorzi, C; Margutti, R; Svensson, K. M; Kobayashi, S; Melandri, A; Wiersema, K; Pozanenko, A; van der Horst, A. J; Pooley, G. G; Fernandez-Soto, A; Castro-Tirado, A. J; de Ugarte Postigo, A; Im, M; Kamble, A. P; Sahu, D. K; Alonso-Lorite, J; Anupama, G. C; Bibby, J. L; Burgdorf, M. J; Clay, N; Curran, P. A; Fatkhullin, T. A; Fruchter, A. S; Garnavich, P; Gomboc, A; Gorosabel, J; Graham, J. F; Gurugubelli, U. K; Haislip, J; Huang, K; Huxor, A; Ibrahimov, M; Jeon, Y; Jeon, Y. B; Ivarsen, K; Kasen, D; Klunko, E; Kouveliotou, C; LaCluyze, A; Levan, A. J; Loznikov, V; Mazzali, P. A; Moskvitin, A. S; Mottram, C; Mundell, C. G; Nugent, P. E; Nysewander, M; O’Brien, P. T; Park, W. K; Peris, V; Pian, E; Reichart, D; Rhoads, J. E; Rol, E; Rumyantsev, V; Scowcroft, V; Shakhovskoy, D; Small, E; Smith, R. J; Sokolov, V. V; Starling, R. L. C; Steele, I; Strom, R. G; Tanvir, N. R; Tsapras, Y; Urata, Y; Vaduvescu, O; Volnova, A; Volvach, A; Wijers, R. A. M. J; Woosley, S. E; Young, D. R (Wiley-Blackwell, 2011-05)
    We present ground-based and Hubble Space Telescope optical observations of the optical transients (OTs) of long-duration Gamma Ray Bursts (GRBs) 060729 and 090618, both at a redshift of z= 0.54. For GRB 060729, bumps are ...
  • Optical studies of SN 2009jf: a Type Ib supernova with an extremely slow decline and aspherical signature 
    Sahu, D. K; Gurugubelli, U. K; Anupama, G. C; Nomoto, K (Wiley-Blackwell, 2011-06)
    Optical UBVRI photometry and medium-resolution spectroscopy of the Type Ib supernova SN 2009jf, during the period from ∼ −15 to +250 d, with respect to the B maximum are reported. The light curves are broad, with an extremely ...
  • Relativistic general-order coupled-cluster method for high-precision calculations: Application to the Al+ atomic clock 
    Kallay, M; Nataraj, H. S; Sahoo, B. K; Das, B. P; Visscher, Lucas (American Physical Society, 2011-03-22)
    We report the implementation of a general-order relativistic coupled-cluster method for performing high-precision calculations of atomic and molecular properties. As a first application, the black-body radiation shift of ...
  • Prediction of electronic structure of organic radicaloid anions using efficient, economical multireference gradient approach 
    Chattopadhyay, Sudip; Chaudhuri, R. K; Freed, Karl F (Royal Society of Chemistry Publishing, 2011-04)
    The improved virtual orbital-complete active space configuration interaction (IVO-CASCI) method enables an economical and reasonably accurate treatment of static correlation in systems with significant multireference ...
  • The Eighth Data Release of the Sloan Digital Sky Survey: First Data from SDSS-III 
    Aihara, H; Allende Prieto, C; An, D; Anderson, S. F; Aubourg, E; Balbinot, E; Beers, T. C; Berlind, A. A; Bickerton, S. J; Bizyaev, D; Blanton, M. R; Gillespie, B. A; Pan, K; Gilmore, G; González Hernández, J. I; Bochanski, J. J; Gott, J. R; Gould, A; Grebel, E. K; Mullally, F; Gunn, J. E; Phleps, S; Hamilton, J; Harding, P; Carr, M. A; Harris, D. W; Hawley, S. L; Hearty, F. R; Nichol, R. C; Ho, S; Hogg, D. W; Holtzman, J. A; Davenport, J. R. A; Honscheid, K; Muna, D; Inada, N; Pandey, P; Ivans, I. I; Jiang, L; Johnson, J. A; Jordan, C; O'Connell, R. W; Jordan, W. P; Pichon, C; Kazin, E. A; Kirkby, D; Klaene, M. A; Knapp, G. R; Paris, I; Munn, J. A; Kneib, J; Kochanek, C. S; Koesterke, L; Kollmeier, J. A; Pieri, M. M; Ogando, R. L. C; Kron, R. G; Lampeitl, H; Lang, D; Le Goff, J; Bolton, A. S; Lee, Y. S; Lin, Y; Murayama, H; Long, D. C; Chen, Y; Loomis, C. P; Lucatello, S; Olmstead, M. D; Lundgren, B; Lupton, R. H; Ma, Z; Percival, W. J; MacDonald, N; Mahadevan, S; Maia, M. A. G; Prada, F; Makler, M; Myers, A. D; Malanushenko, E; Malanushenko, V; Oravetz, D. J; Mandelbaum, R; Maraston, C; Petitjean, P; Margala, D; Masters, K. L; Price-Whelan, A. M; McBride, C. K; McGehee, P. M; McGreer, I. D; Ménard; Naugle, T; Fausti Neto, A; Padmanabhan, N; Palanque-Delabrouille, N; Pfaffenberger, R; Pforr, J; Raddick, M. J; Bovy, J; Ramos, B. H. F; Esposito, M; Reyle, C; Rich, J; Miralda-Escudé, J; Richards, G. T; Rix, H; Robin, A. C; Chiappini, C; Rocha-Pinto, H. J; Rockosi, C. M; Roe, N. A; Cuong Nguyen, D; Rollinde, E; Brandt, W. N; Ross, A. J; Dawson, K; Ross, N. P; Rossetto, B. M; Sánchez, A. G; Sayres, C; Comparat, J; Schlegel, D. J; Evans, M. L; Schlesinger, K. J; Schmidt, S. J; Schneider, D. P; Sheldon, E; Dhital, S; Brinkmann, J; Shu, Y; Simmerer, J; Simmons, A. E; Sivarani, T; Fan, X; Connolly, N; Snedden, S. A; Sobeck, J. S; Steinmetz, M; Strauss, M. A; Ealet, A; Szalay, A. S; Tanaka, M; Brown, P. J; Thakar, A. R; Morrison, H. L; Thomas, D; Tinker, J. L; Cortes, M; Tofflemire, B. M; Tojeiro, R; Tremonti, C. A; Ebelke, G. L; Vandenberg, J; Vargas Magaña, M; Verde, L; Femenía Castellá, B; Vogt, N. P; Brownstein, J. R; Wake, D. A; Wang, J; Croft, R. A. C; Weaver, B. A; Weinberg, D. H; Edmondson, E. M; White, M; White, S. D. M; Font-Ribera, A; Yanny, B; Yasuda, N; Yeche, C; Zehavi, I; Busca, N. G; Campbell, H; Cuesta, A. J; da Costa, L. N; Eisenstein, D. J; Escoffier, S; Frinchaboy, P. M; Ge, J (IOP Publishing, 2011-04)
    The Sloan Digital Sky Survey (SDSS) started a new phase in 2008 August, with new instrumentation and new surveys focused on Galactic structure and chemical evolution, measurements of the baryon oscillation feature in the ...
  • Polarized Line Formation with J-state Interference in the Presence of Magnetic Fields. I. Partial Frequency Redistribution in the Collisionless Regime 
    Smitha, H. N; Sampoorna, M; Nagendra, K. N; Stenflo, J. O (IOP Publishing, 2011-05-20)
    Quantum interference phenomena play a fundamental role in astrophysical spectra that are formed by coherent scattering processes. Here we derive a partial frequency redistribution (PRD) matrix that includes J-state ...
  • Enigmatic aspects of the early universe: possibility of a `pre-big bang phase'! 
    Sivaram, C; Arun, K (Springer, 2011-05)
    In this paper it is suggested that inclusion of mutual gravitational interactions among the particles in the early dense universe can lead to a ‘pre-big bang’ scenario, with particle masses greater than the Planck mass ...
  • On the interaction of a thin, supersonic shell with a molecular cloud 
    Anathpindika, S; Bhatt, H. C (Wiley-Blackwell, 2011-04)
    Molecular Clouds (MCs) are stellar nurseries; however, formation of stars within MCs depends on the ambient physical conditions. MCs, over a free-fall time, are exposed to numerous dynamical phenomena, of which, the ...
  • Efficient minimization of servo lag error in adaptive optics using data stream mining 
    Vyas, A; Roopashree, M. B; Prasad, B. R (Springer, 2011)
    Prediction of the wavefronts helps in reducing the servo lag error in adaptive optics caused by finite time delays (~ 1-5 ms) before wavefront correction. Piecewise linear segmentation based prediction is not suitable in ...
  • Valence universal multireference coupled cluster calculations of the properties of indium in its ground and excited states 
    Madhulita Das; Chaudhuri, R. K; Chattopadhyay, S; Mahapatra, U. S (IOP Publishing, 2011-03)
    In view of its importance in high precision spectroscopy, the valence universal multireference coupled cluster (VU-MRCC) method with four-component relativistic spinors has been applied to compute ionization potential (IP) ...
  • m-state Interference with Partial Frequency Redistribution for Polarized Line Formation in Arbitrary Magnetic Fields 
    Sampoorna, M (IOP Publishing, 2011-04-20)
    The present paper concerns the derivation of polarized partial frequency redistribution (PRD) matrices for scattering on a two-level atom in arbitrary magnetic fields. We generalize the classical theory of PRD that is ...
  • Seyfert Galaxies: Nuclear Radio Structure and Unification 
    Lal, D. V; Shastri, P; Gabuzda, D. C (IOP Publishing, 2011-04-10)
    A radio study of a carefully selected sample of 20 Seyfert galaxies that are matched in orientation-independent parameters, which are measures of intrinsic active galactic nucleus power and host galaxy properties, is ...
  • Early pioneers of telescopic astronomy in India: G.V.Juggarow and his Observatory 
    Kameswara Rao, N; Vagiswari, A; Birdie, C (Indian Academy of Sciences, 2011-05-25)
    G.V.Juggarow was one of the early pioneers of observational astronomy in India who built his own observatory in 1840 at Vizagapatam (Vizagapatnam). His legacy was continued by his son-in-law A.V.Nursing Row till 1892, his ...
  • Survey of O VI absorption in the Large Magellanic Cloud 
    Pathak, A; Pradhan, A. C; Sujatha, N. V; Murthy, J (Wiley-Blackwell, 2011-04)
    We present a survey of interstellar O VI absorption in the Large Magellanic Cloud (LMC) towards 70 lines of sight based on Far Ultraviolet Spectroscopic Explorer (FUSE) observations. The survey covers O VI absorption in a ...

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