IIAP Publications: Recent submissions

  • Spectra of doubly and trebly ionised thallium 
    Narayan, A. L; Pattabhi, P; Rao, A. S (Nature Publishing Group, 1929-09-20)
    CONTINUING our previous work on Tl II and Pb III, the spectra of Tl III and Tl IV have been under examination by us for some time past. A preliminary attempt, by the application of the X-ray doublet-laws, revealed a number ...
  • The second spark spectrum of lead 
    Rao, A. S; Narayan, A. L (Nature Publishing Group, 1929-11-23)
    THE second spark spectrum of lead was recently analysed by K. R. Rao and ourselves; and a preliminary report of the series regularities discovered was published in a paper (Ind. J. Phy., vol. 2, pt. 4, pp. 468-476.) We ...
  • Spectrum of doubly ionised arsenic 
    Rao, A. S; Narayan, A. L (Nature Publishing Group, 1929-08-10)
    THE deepest term of the separation of doubly ionised arsenic (As III) is 4p 2P1. The values of these doublet terms relative to 2G were reported in a recent paper (Ind. J. Phy., 5, 3, p. 3) to be 220, 221 cm.-1. It was found ...
  • Dynamics of coronal bright points as seen by Sun watcher using active pixel system detector and image processing (SWAP), atmospheric imaging assembly (AIA), and helioseismic and magnetic imager (HMI) 
    Chandrashekhar, K; Krishna Prasad, S; Banerjee, D; Ravindra, B; Seaton, D. B (Springer, 2013-08)
    The Sun Watcher using Active Pixel system detector and Image Processing (SWAP) onboard the PRoject for OnBoard Autonomy-2 (PROBA2) spacecraft provides images of the solar corona in EUV channel centered at 174 Å. These data, ...
  • Forward-scattering Hanle effect in the solar Ca i 4227 Å line 
    Frisch, H; Anusha, L. S; Bianda, M; Holzreuter, R; Nagendra, K. N; Ramelli, R; Sampoorna, M; Smitha, H. N; Stenflo, J. O (Cambridge University Press, 2012-06)
    High sensitivity spectropolarimetric observations of the four Stokes parameters of the solar Ca i 4227 Å line have been performed in October 2010 at IRSOL with the ZIMPOL polarimeter, near the disk center, outside an active ...
  • The progress in the study of post-AGB stars 
    Giridhar, S (Astronomical Society of India, 2011)
    Post-AGB stars represent a crucial phase in the evolution of low and intermediate stars where rapid change in the surface composition of the star and its circumstellar envelope takes place. We summarize recent developments ...
  • Stellar yields and Galactic chemical evolution 
    Goswami, A (Astronomical Society of India, 2011)
    The chemical composition of stars belonging to the halo and the disk of our Galaxy as well as a few nearby galaxies are the primary sources of our understanding of the Galactic Chemical Evolution (GCE). The abundance trends ...
  • Study of emission line stars in young open clusters 
    Mathew, B; Subramaniam, A (Astronomical Society of India, 2011)
    Emission-line stars in young open clusters are identified to study their properties, as a function of age, spectral type and evolutionary state. 207 open star clusters were observed using the slitless spectroscopy method ...
  • Influence of the polar cap current on pulsar polarization 
    Dinesh Kumar; Gangadhara, R. T (IOP Publishing, 2012-07-20)
    We have developed a model for the polarization of curvature radiation by taking into account the polar-cap-currentinduced perturbation on the dipolar magnetic field. We present the effects of the polar cap current on the ...
  • Ghost Interference and Quantum Erasure 
    Pravabati, C; Qureshi, T (Progress of Theoretical Physics, 2012-03)
    The two-photon ghost interference experiment, generalized to the case of massive particles, is theoretically analyzed. It is argued that the experiment is intimately connected to a double-slit interference experiment ...
  • State-specific complete active space multireference Møller–Plesset perturbation approach for multireference situations: illustrating the bond breaking in hydrogen halides 
    Chattopadhyay, S; Mahapatra, U. S; Chaudhuri, R. K (Springer, 2012-04)
    Assessment of the complete active space-based state-specific multireference Møller–Plesset perturbation theory, SS-MRMPPT, has been performed on the ground states of HX (X = F, Cl, and Br) systems through the computation ...
  • A Study of the Role of Lyβ Fluorescence on O I Line Strengths in Be Stars 
    Blesson, M; Banerjee, D. P. K; Subramaniam, A; Ashok, N. M (IOP Publishing, 2012-07-01)
    The possibility of the Lyβ fluorescence mechanism being operational in classical Be (CBe) stars and thereby contributing to the strength of the O I λ8446 line has been recognized for long. However, this supposition needs ...
  • Three-body on-site interactions in ultracold bosonic atoms in optical lattices and superlattices 
    Singh, M; Dhar, A; Mishra, T; Pai, R. V; Das, B. P (American Physical Society, 2012-05)
    The Mott-insulator-superfluid transition for ultracold bosonic atoms in an optical lattice has been extensively studied in the framework of the Bose-Hubbard model with two-body on-site interactions. In this paper, we analyze ...
  • Theoretical aids in screening candidates for atomic clocks: Illustration for Yb II 
    Chaudhuri, R. K; Freed, K. F; Chattopadhyay, S; Mahapatra, U. S (IOP Publishing, 2012-04)
    Highly accurate electronic-structure calculations for metastable electronic excited states are needed to supplement scant experimental data in screening possible systems for new higher-precision atomic clocks. We test the ...
  • The location of solar metric type ii radio bursts with respect to the associated coronal mass ejections 
    Ramesh, R; Anna Lakshmi, M; Kathiravan, C; Gopalswamy, N; Umapathy, S (IOP Publishing, 2012-06-20)
    Forty-one solar type II radio bursts located close to the solar limb (projected radial distance rlesssim 0.8Rbigdot) were observed at 109 MHz by the radioheliograph at the Gauribidanur observatory near Bangalore during the ...
  • Properties of umbral dots from stray light corrected hinode filtergrams 
    Louis, R. E; Mathew, S. K; Bellot Rubio, L. R; Kiyoshi, I; Ravindra, B; Raja Bayanna, A (IOP Publishing, 2012-06-20)
    High-resolution blue continuum filtergrams from Hinode are employed to study the umbral fine structure of a regular unipolar sunspot. The removal of scattered light from the images increases the rms contrast by a factor ...
  • Star formation in bulgeless late-type galaxies: clues to their evolution 
    Mousumi Das; Sengupta, C; Ramya, S; Misra, K (Wiley-Blackwell, 2012-07)
    We present Giant Meterwave Radio Telescope 1280-MHz radio continuum observations and follow-up optical studies of the disc and nuclear star formation in a sample of low-luminosity bulgeless galaxies. The main aim is to ...
  • SN2007rw- A Type IIL Supernova 
    Arora, S; Sahu, D. K; Anupama, G. C (Astronomical Society of the Pacific, 2011-12)
    We present BVRI photometry and medium resolution spectroscopy of the supernova SN2007rw during ˜ 1 week to ˜ 7 months after discovery. This supernova was classified as a type IIb event, however, based on our analysis we ...
  • Spectroscopic monitoring of the symbiotic star BX monocerotis 
    Anupama, G. C; Kamath, U. S; Gurugubelli, U. K; Mikołajewska, J (Vilnius University and the Lithuanian Astronomical Union, 2012)
    Low resolution optical spectra of the symbiotic star BX Monocerotis in the 3500--9000 A range obtained during 1999--2010 are described. The spectrum of BX Mon at all phases is dominated by the cool component, with a red ...
  • Panchromatic observations of the textbook grb 110205a: constraining physical mechanisms of prompt emission and afterglow 
    Zheng, W; Shen, R. F; Sakamoto, T; Beardmore, A. P; De Pasquale, M; Wu, X. F; Gorosabel, J; Urata, Y; Sugita, S; Zhang, B; Pozanenko, A; Nissinen, M; Sahu, D. K; Im, M; Ukwatta, T. N; Andreev, M; Klunko, E; Volnova, A; Akerlof, C. W; Anto, P; Barthelmy, S. D; Breeveld, A; Carsenty, U; Castillo-Carrion, S; Castro-Tirado, A. J; Chester, M. M; Chuang, C. J; Cunniffe, R; De Ugarte Postigo, A; Duffard, R; Flewelling, H; Gehrels, N; Guver, T; Guziy, S; Hentunen, V. P; Huang, K. Y; Jelinek, M; Koch, T. S; Kubanek, P; Kuin, P; McKay, T. A; Mottola, S; Oates, S. R; O'Brien, P; Ohno, M; Page, M. J; Pandey, S. B; Perez del Pulgar, C; Rujopakarn, W; Rykoff, E; Salmi, T; Sanchez-Ramirez, R; Schaefer, B. E; Sergeev, A; Sonbas, E; Sota, A; Tello, J. C; Yamaoka, K; Yost, S. A; Yuan, F (IOP Publishing, 2012-06-01)
    We present a comprehensive analysis of a bright, long-duration (T /sub90/ ~ 257 s) GRB 110205A at redshift z = 2.22. The optical prompt emission was detected by Swift/UVOT, ROTSE-IIIb, and BOOTES telescopes when the gamma-ray ...

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