IIAP Publications: Recent submissions

  • Understanding ghost interference 
    Qureshi, T; Pravabati, C; Shafaq, S (World Scientific Publishing Company, 2016-09)
    The ghost interference observed for entangled photons is theoretically analyzed using wave-packet dynamics. It is shown that ghost interference is a combined effect of virtual double-slit creation due to entanglement, and ...
  • Plasma wave aided two photon decay of an electromagnetic wave in a plasma 
    Magesh Kumar, K. K; Singh, R; Krishan, V (American Institute of Physics Publishing, 2014-11)
    The presence of a Langmuir wave in an unmagnetized plasma is shown to allow parametric decay of an electromagnetic wave into two electromagnetic waves, which is otherwise not allowed due to wave number mismatch. The decay ...
  • Contribution of relativistic quantum chemistry to electrons electric dipole moment for CP violation 
    Abe, M; Gopakumar, G; Das, B. P; Tatewaki, H; Mukherjee, D; Hada, M (AIP Publishing, 2015-05)
    The search for the electric dipole moment of the electron (eEDM) is important because it is a probe of Charge Conjugation-Parity (CP) violation. It can also shed light on new physics beyond the standard model. It is not ...
  • The Calibration of the UVIT Detectors for the ASTROSAT Observatory 
    Leahy, Denis; Postma, J; Hutchings, J. B; Tandon, S. N (Cambridge University Press, 2018-08)
    The UVIT ultraviolet and visual band detectors and electronics for the ASTROSAT observatory were calibrated in the vacuum laboratory at the University of Calgary. This work was supported by the Canadian Space Agengy and ...
  • Relativistic state-specific multireference coupled cluster theory description for bond-breaking energy surfaces 
    Ghosh, A; Chaudhuri, R. K; Chattopadhyay, S (American Institute of Physics, 2016-09)
    A four-component (4c) relativistic state specific multireference coupled cluster (4c-SSMRCC) method has been developed and applied to compute the ground state spectroscopic constants of Ag2, Cu2, Au2, and I2. The reference ...
  • A New Near-IR C2 Linelist for an Improved Chemical Analysis of Hydrogen-deficient, Carbon-rich Giants\unboldmath 
    Garcia-Hernandez, D. A; Masseron, T; Zamora, O; Manchado, A; Rao, N. K; Reddy, A. B. S; Lambert, D. L; Yurchenko, S; Tennyson, J (Astronomical Society of the Pacific, 2019)
    Diatomic carbon (C2) is ubiquitous in astronomical environments, from comets and stars to translucent clouds and the interstellar medium. In particular, the C2 bands (mainly the Ballik-Ramsay and Phillips transitions) are ...
  • Polarized line scattering theory with applications in astrophysical radiative transfer: a historical perspective 
    Nagendra, K. N (Astronomical Society of the Pacific, 2019-07)
    Ivan Hubený did fundamental work in the theory of partial frequency redistribution (PFR) and radiative transfer (RT). One of the most elegant works is the “theory of generalized redistribution functions (GRFs)†for ...
  • Quantitative astronomical spectroscopy in the post Saha equation period 
    Bhattacharyya, J. C (Saha Institute of Nuclear Physics, 2017-07)
    Several new questions of quantitatively estimating physical conditions on astronomical bodies had opened up after formulation of Saha Ionization Equation. The article first reviews the step by step progress in ...
  • Optical and GeV flux variations in Fermi blazars 
    Stalin, C. S (Astronomical Society of India, 2015-04)
    A large fraction of γ-ray emitting blazars show correlated flux variations in the optical and γ-ray bands with little or no time lag. However, in a minority of them, uncorrelated optical and γ-ray flux variations are seen. ...
  • The search for binary black holes in Seyferts with double peaked emission lines 
    Kharb, P; Mousumi Das; Subramanian, S; Paragi, Z (Astronomical Society of India, 2015-04)
    We discuss results from very long baseline interferometry (VLBI) observations of two Seyfert galaxies with double peaked emission lines in their SDSS optical spectra. Such AGN are potential candidates for the presence ...
  • Modelling the synchrotron light curves in recurrent novae V745 Scorpii and RS Ophiuchi 
    Kantharia, N. G; Dutta, P; Roy, N; Anupama, G. C; Chitale, A; Ishwara-Chandra, C; Prabhu, T. P; Ashok, N. M; Banerjee, D. P. K (Astronomical Society of India, 2015-02)
    In this paper, we present the synchrotron light curve at 610 MHz from the recurrent nova V745 Sco following its outburst on 6 February 2014. The system has been detected and periodically monitored with the Giant Metrewave ...
  • A model for relativistic disk emission, flow and variability 
    Mohan, Prashanth; Mangalam, A (Astronomical Society of India, 2015-04)
    Orbiting features near a black hole can cause variability in optical/UV and X-ray bands with quasi-periodic signatures. The variable flux is derived in Kerr geometry including the following relativistic effects: light ...
  • Lepto−Hadronic Origin of γ-ray Outbursts of 3C 279 
    Paliya, Vaidehi S; Diltz, C; Bottcher, M; Stalin, C. S; Buckley, D (Astronomical Society of India, 2015-03)
    The blazar 3C 279 exhibited a giant γ-ray outburst in 2013 December and 2014 April. Apart from the very fast γ-ray flux variability, the spectral nature of the flares were also found to vary significantly between these ...
  • Hard X-ray flux variations in AGN from NuSTAR 
    Priyanka Rani; Stalin, C. S (Astronomical Society of India, 2015-04)
    We present here our results on the hour like time scale Xray flux variations in a sample of active galactic nuclei using data from the Nuclear Spectroscopic Telescope Array (NuSTAR). We find that in the 3−79 keV band, ...
  • Study of core-collapse supernovae with the upcoming 4m international liquid mirror telescope at Devasthal, Nainital 
    Brajesh Kumar; Surdej, J; Hickson, P; Borra, E. F; Finet, F; Swings, J. P; Habraken, S; Pandey, S. B (Astronomical Society of India, 2015-03)
    We present an overview and status of the upcoming 4m International Liquid Mirror Telescope facility at Devasthal, Nainital and its uses for the study of core-collapse supernovae (CCSNe).
  • Opportunities for astrophysical science from the inner and outer solar system 
    Zemcov, Michael; Arcavi, Iair; Arendt, Richard G; Bachelet, Etienne; Beichman, Chas; Bock, James; Brandt, Pontus; Ranga Ram Chary; Cooray, Asantha; Dragomir, Diana; Gorjian, Varoujan; Harman, Chester E; Henry, Richard Conn; Lisse, Carey; Lubin, Philip; Matsuura, Shuji; McNutt, Ralph; Murthy, J; Poppe, Andrew R; Paul, Michael V; Reach, William T; Shvartzvald, Yossi; Street, R A; Symons, Teresa; Werner, Michael (American Astronomical Society, 2019-05)
    Astrophysical measurements away from the 1 AU orbit of Earth can enable several astrophysical science cases that are challenging or impossible to perform from Earthbound platforms, including: building a detailed understanding ...
  • Solar astronomy at high altitude 
    Hasan, S. S; Bagare, S. P; Rangarajan, K. E (Indian National Science Academy, 2014-11)
    A major project called the National Large Solar Telescope (NLST) has been proposed for pursuing Solar Astronomy at High Altitude. The project envisages the development of a state-of-the-art 2-m class telescope to carry ...
  • Partial Redistribution Theory and its Applications in the Interpretation of the Second Solar Spectrum 
    Nagendra, K. N (Astronomical Society of the Pacific, 2014-10)
    In this review we first describe briefly the techniques to formulate partial redistribution (PRD) matrices for polarized line scattering on atoms. These matrices have to be formulated by either semi-classical or quantum ...
  • Intrinsically Polarized Blend Lines 
    Sowmya, K; Nagendra, K. N; Sampoorna, M (Astronomical Society of the Pacific, 2014-10)
    The Second Solar Spectrum formed by coherent scattering processes in the Sun, is highly structured. It is characterized by numerous blend lines, both intrinsically polarizing and depolarizing, superposed on the background ...
  • The Role of Quantum Interference and Partial Redistribution in the Solar Ba II D2 4554 Ã… Line 
    Smitha, H. N; Nagendra, K. N; Stenflo, J. O; Sampoorna, M (Astronomical Society of the Pacific, 2014-10)
    The Ba ii D2 line at 4554 Å is a good example, where the F-state interference effects due to the odd isotopes produce polarization profiles, which are very different from those of the even isotopes that do not exhibit ...

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