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Browsing IIAP Publications by Title

Browsing IIAP Publications by Title

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  • The TESS-Keck Survey. VIII. Confirmation of a Transiting Giant Planet on an Eccentric 261 Day Orbit with the Automated Planet Finder Telescope 
    Dalba, Paul A; Kane, Stephen R; Dragomir, Diana; Villanueva Jr, Steven; Collins, Karen A; Jacobs, Thomas Lee; LaCourse, Daryll M; Gagliano, Robert; Kristiansen, Martti H; Omohundro, Mark; Schwengeler, Hans M; Terentev, Ivan A; Vanderburg, Andrew; Fulton, Benjamin; Isaacson, Howard; Zandt, Judah Van; Howard, Andrew W; Thorngren, Daniel P; Howell, Steve B; Batalha, Natalie M; Chontos, Ashley; Crossfield, Ian J. M; Dressing, Courtney D.; Huber, Daniel; Petigura, Erik A.; Robertson, Paul; Roy, Arpita; Weiss, Lauren M; Behmard, Aida; Beard, Corey; Brinkman, Casey L; Giacalone, Steven; Hil, Michelle L; Lubin, Jack; Mayo, Andrew W; Mocnik, Teo; Murphy, Joseph M. Akana; Polanski, Alex S; Rice, Malena; Rosenthal, Lee J; Rubenzahl, Ryan A; Scarsdale, Nicholas; Turtelboom, Emma V; Tyler, Dakotah; Benni, Paul; Boyce, Pat; Esposito, Thomas M; Girardin, E; Laloum, Didier; Lewin, Pablo; Mann, Christopher R; Marchis, Franck; Schwarz, Richard P; Srdoc, Gregor; Steuer, Jana; Sivarani, T; Athira Unni; Eisner, Nora L; Fetherolf, Tara; Li, Zhexing; Yao, Xinyu; Pepper, Joshua; Ricker, George R.; Vanderspek, Roland; Latham, David W; Seager, S.; Winn, Joshua N; Jenkins, Jon M; Burke, Christopher J; Eastman, Jason D; Lund, Michael B; Rodriguez, David R; Rowden, Pamela; Ting, Eric B; Villaseñor, Jesus Noel (American Astronomical Society, 2022-02-01)
    We report the discovery of TOI-2180 b, a 2.8 MJ giant planet orbiting a slightly evolved G5 host star. This planet transited only once in Cycle 2 of the primary Transiting Exoplanet Survey Satellite (TESS) mission. Citizen ...
  • Tessellation of SoHO Magnetograms 
    Srikant, R; Singh, J (Indian Academy of Sciences, 2000-12)
    A gradient based algorithm which divides arbitrary images into non-overlapping surface filling tiles of opposite polarity is used to study the flux and size distributions of large scale magnetic flux concen-trations in ...
  • Testing a theoretical prediction for bar formation in galaxies with bulges 
    Kataria, Sandeep Kumar; Das, Mousumi; Barway, Sudhanshu (EDP Sciences, 2020-08)
    Earlier studies have shown that massive bulges impede bar formation in disk galaxies. Recent N-body simulations have derived a bar formation criterion that depends on the radial bulge force in a galaxy disk. We use those ...
  • Testing Alfvén wave propagation in a “realistic” set-up of the solar atmosphere 
    Chatterjee, Piyali (Taylor & Francis, 2020-07)
    We present a radiative magneto-hydrodynamic simulation set-up using the pencil code to study the generation, propagation and dis- sipation of Alfvén waves in the solar atmosphere which includes a convective layer, ...
  • Testing concave aspheric surfaces: use of two crossed Babinet compensators 
    Saxena, A. K; Jayarajan, A. P (Optical Society of America, 1981)
  • TeV and Superheavy Particles from Supersymmetric Topological Defects, the Extragalactic γ-ray Background, and the Highest Energy Cosmic Rays 
    Bhattacharjee, P; Shafi, Qaisar; Stecker, F. W (The American Physical Society, 1998-04)
    Cosmic topological defects in a wide class of supersymmetric theories can simultaneously be sources of Higgs bosons of mass~supersymmetry breaking scale~TeV, as well as superheavy gauge bosons of mass~η>>1 TeV, η being the ...
  • TeV blazar variability: the firehose instability? 
    Subramanian, P; Shukla, A; Becker, P. A (Wiley-Blackwell, 2012-06)
    Recently observed minute-time-scale variability of blazar emission at TeV energies has imposed severe constraints on jet models and TeV emission mechanisms. We focus on a robust jet instability to explain this variability. ...
  • 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 ...
  • Theoretical analysis of effective electric fields in mercury monohalides 
    Srinivasa Prasannaa, V; Abe, M; Bannur, V. M; Das, B. P (The American Physical Society, 2017-04)
    Mercury monohalides are promising candidates for electron electric dipole moment searches. This is due to their extremely large values of effective electric fields, besides other attractive experimental features. We have ...
  • Theoretical estimation of lifetimes of the lowest metastable states in Sc III and Y III 
    Sahoo, B. K; Nataraj, H. S; Das, B. P; Chaudhuri, R. K; Mukherjee, D (Institute of Physics, 2008-03)
    Lifetimes of the first two metastable states in Sc^{2+} and Y^{2+} are determined using the relativistic coupled-cluster theory. There is a considerable interest in studying the electron correlation effects in these ions ...
  • Theoretical fringe profiles with crossed Babinet compensators in testing concave aspheric surfaces 
    Saxena, A. K; Lancelot, J. P (Optical Society of America., 1982)
    This paper presents the theory for the use of crossed Babinet compensators in testing concave aspheric surfaces. Theoretical fringe profiles for a sphere and for an aspheric surface with primary aberration are shown. ...
  • Theoretical investigations of electronic spectra of silver atom using all-electron scalar relativistic basis 
    Chaudhuri, R. K; Chattopadhyay, Sudip (American Institute of Physics, 2022-12)
    Exploration of the tractable size basis set that can provide reliable estimates of computed properties for systems containing heavy elements has been the subject of interest in quantum chemistry over many decades. In this ...
  • A theoretical model of the near-surface shear layer of the Sun 
    Jha, Bibhuti K; Choudhuri, A. R (Oxford University Press on behalf of the Royal Astronomical Society, 2021-09)
    The Sun has a near-surface shear layer (NSSL), within which the angular velocity decreases rapidly with radius. We provide an explanation of this layer based on the thermal wind balance equation. Since convective motions ...
  • Theoretical Spectra of the AM Canum Venaticorum Binary System SDSS J0926+3624: Effects of Irradiation onto the Donor Star 
    Sengupta, S; Taam, R. E (IOP Publishing, 2011-09-20)
    Taking into account a range of parameters determined from the evolution- ary models and available observational data, the detailed non-LTE spectrum for the primary star and the irradiated donor star in the AM CVn system ...
  • Theoretical spectroscopic studies of the atomic transitions and lifetimes of low-lying states in Ti IV 
    Mandal, S; Dixit, G; Sahoo, B. K; Chaudhuri, R. K; Majumder, S (Institute of Physics, 2008-03)
    The astrophysically important electric quadrupole (E2) and magnetic dipole (M1) transitions for the low-lying states of triply ionized titanium (Ti IV) are calculated very accurately using a state-of-the-art all-order ...
  • Theoretical studies of atomic transitions in boron-like ions: Mg VIII, Si X and S XII 
    Nataraj, H. S; Sahoo, B. K; Das, B. P; Chaudhuri, R. K; Mukherjee, D (2007-08)
    In this paper, we have carried out the calculations of the weighted oscillator strengths and the transition probabilities for a few low-lying transitions of boron-like ions: Mg VIII, Si X and S XII which are astrophysically ...
  • Theoretical studies of electric quadrupole transition probabilities in Mg II 
    Majumder, S; Gopakumar, G; Chaudhuri, R. K; Das, B. P; Merlitz, H; Mahapatra, U. S; Mukherjee, D (Springer-Verlag, 2004-01)
    The relativistic coupled cluster theory is employed to calculate electric quadrupole (E2) transition probabilities among the doublet states of Mg II which are of interest in astrophysical problems. This is the first time ...
  • Theoretical studies of the 6sS1/22→5dD3/22 parity-nonconserving transition amplitude in Ba+ and associated properties 
    Sahoo, B. K; Das, B. P; Chaudhuri, R. K; Mukherjee, D (The American Physical Society, 2007-03)
    It is widely believed that the standard model of particle physics is just an intermediate step in understanding the properties of the elementary physics in nature and the interactions between them. Over the past twenty ...
  • Theoretical Studies of the Ground and Excited State Structures of Stilbene 
    Chaudhuri, R. K; Freed, K. F; Chattopadhyay, S; Mahapatra, U. S (American Chemical Society, 2013-10-03)
    Optimized geometries are evaluated for the ground and low lying excited states of cis-stilbene, trans-stilbene, and 4a,4b-dihydrophenanthrene (DHP) from calculations performed with the improved virtual orbital, complete ...
  • Theoretical study of irradiation effects in close binaries 
    Srinivasa Rao, M; Varghese, B. A (Astronomical Observatory, 2009-06)
    The effect of irradiation is studied in a close binary system assuming that the secondary component is a point source, moving in a circular orbit. The irradiation effects are calculated on the atmosphere of the primary ...

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