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Browsing IIAP Publications by Title

Browsing IIAP Publications by Title

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  • Kumar, K. B; Rajamanickam, N; Bagare, S. P; Gomez, F. M; Gonzalez, L. J. J. (Elsevier, 2003-10)
    Franck-Condon factors and /r-centroids, which are very closely related to transition probabilities, have been evaluated by the more reliable numerical integration procedure for the bands of B1Σ+-X1Σ+, C1Σ+-X1Σ+, c3Σ+-b3Σ+, ...
  • Ramachandran, P. S; Rajamanickam, N; Bagare, S. P; Kumar, B. C (Springer, 2005-01)
    The Franck-Condon factors and r-centroids, which are very closely related to vibrational transition probabilities, have been evaluated by the more reliable numerical integration procedure for the bands of B 2∑+ X 2∑+, F ...
  • Kochhar, R. K (British Astronomical Society, 1991-04)
    The contributions made by French astronomers from India are reviewed. The French were more successful on the scientific front than on the colonial. The first telescopic discovery from India was made by a French Jesuit ...
  • Iyer, B. R; Vishveshwara, C. V (The American Physical Society, 1993)
    The phenomenon of gyroscopic precession is studied within the framework of the Frenet-Serret formalism adapted to quasi-Killing trajectories. Its relation to the congruence vorticity is highlighted with particular reference ...
  • Sundaram, G. A. S; Subramanian, K. R (Royal Astronomical Society, 2005-05)
    Type I noise storms constitute a sizeable fraction of the active Solar radio emission component. Observations of isolated instances of such bursts, in the swept-frequency mode at metric wavelengths, have remained sparse, ...
  • Sastry, Ch. V (Gordon and Breach, Science Publishers Ltd., 1972-05)
    The frequency drift and time splitting of solar radio bursts are observed with a multi-channel radiometer and a polarimeter at frequencies around 25 MHz. It is found that a majority of noise storm bursts have drift ...
  • Venkatakrishnan, P (D. Reidel Publishing Co., 1979-08)
    When a sound wave is incident on a magnetic flux sheath, it causes fluctuations in the mean magnetic field of the sheath. We have calculated the space-average of the longitudinal component of these fluctuations and plotted ...
  • Kapoor, R. C; Datta, B (The Royal Astronomical Society, 1984-08)
    The frequency shifts and line broadening of radiation from the surface of rapidly rotating neutron stars are calculated using a rotationally perturbed interior spherical metric and a representative choice of the equation ...
  • Mohan, Prashanth; Agarwal, A; Mangalam, A; Gupta, A. C; Wiita, P. J; Volvach, A. E; Aller, M. F; Aller, H. D; Gu, M. F; Lahteenmaki, A; Tornikoski, M; Volvach, L. N (Oxford University Press on behalf of the Royal Astronomical Society, 2015-09-11)
    We study the core shift effect in the parsec-scale jet of the blazar 3C 454.3 using the 4.8– 36.8 GHz radio light curves obtained from three decades of continuous monitoring. From a piecewise Gaussian fit to each flare, ...
  • Krishna Prasad, S; Banerjee, D; Doorsselaere, T. V (IOP Publishing, 2014-07-10)
    Propagating slow magneto-acoustic waves are often observed in polar plumes and active region fan loops. The observed periodicities of these waves range from a few minutes to a few tens of minutes and their amplitudes were ...
  • Mitra, S; Priestley, K; Gaur, V. K; Rai, S. S (Seismological Society of America, 2006-12)
    We use seismograms from regional earthquakes recorded on digital seismographs in peninsular India to determine the frequency-dependent Q of Lg for the Indian platform. We measure Lg attenuation by determining the decay of ...
  • Benomar, O; Baudin, F; Campante, T. L; Chaplin, W. J; García, R. A; Gaulme, P; Toutain, T; Verner, G. A; Appourchaux, T; Ballot, J; Barban, C; Elsworth, Y; Mathur, S; Mosser, B; Régulo, C; Roxburgh, I. W; Auvergne, M; Baglin, A; Catala, C; Michel, E; Samadi, R (EDP Sciences, 2009-11)
    Context. Solar-like oscillations have now been observed in several stars, thanks to ground-based spectroscopic observations and space-borne photometry. CoRoT, which has been in orbit since December 2006, has observed the ...
  • Kenath, Arun; Schiller, Christoph; Sivaram, C (World Scientific Publishing, 2022-10-15)
    There are at least two ways to deduce Einstein’s field equations from the principle of maximum force c4/4G or from the equivalent principle of maximum power c5/4G . Tests in gravitational wave astronomy, cosmology, and ...
  • Kharb, P; Lal, D. V; Singh, V; Bagchi, J; Ishwara-Chandra, C. H; Hota, A; Konar, C; Wadadekar, Yogesh; Shastri, P; Mousumi Das; Baliyan, K; Nath, B. B; M. Pandey-Pommier (Springer, 2016-12)
    We present detailed science cases that a large fraction of the Indian AGN community is interested in pursuing with the upcoming Square Kilometre Array (SKA). These interests range from understanding low luminosity active ...
  • Puravankara, Manoj; Banyal, R. K; Narang, Mayank (Indian Physics Association, 2019-12)
    This year’s Physics Nobel Prize was jointly awarded to three scientists. Phillip James Peebles from Princeton University, USA, received one half of the prize for his seminal work on physical cosmology, and other half was ...
  • Paletou, F; Sampoorna, M; Peymirat, C (EDP Sciences, 2023-03)
    In this article we discuss a method for obtaining a numerical solution to the so-called full nonlocal thermodynamic equilibrium (nonLTE) radiation transfer problem. More specifically, the usual numerical iterative methods ...
  • Wyrzykowski, L; Mroz, P; Rybicki, K. A; Gromadzki, M; Kolaczkowski, Z; Zielinski, M; Zielinski, P; Britavskiy, N; Gomboc, A; Sokolovsky, K; Hodgkin, S. T; Abe, L; Aldi, G. F; AlMannaei, A; Altavilla, G; Al Qasim, A; Anupama, G. C; Awiphan, S; Bachelet, E; Bakış, V; Baker, S; Bartlett, S; Bendjoya, P; Benson, K; Bikmaev, I. F; Birenbaum, G; Blagorodnova, N; Blanco-Cuaresma, S; Boeva, S; Bonanos, A. Z; Bozza, V; Bramich, D. M; Brun, I; Burenin, R. A; Burgaz, U; Butterley, T; Caines, H. E; Caton, D. B; Calchi Novati, S; Carrasco, J. M; Cassan, A; Cepas, V; Cropper, M; Chruslinska, M; Clementini, G; Clerici, A; Conti, D; Conti, M; Cross, S; Cusano, F; and 134 co-authors (EDP Sciences, 2020-01)
    Gaia16aye was a binary microlensing event discovered in the direction towards the northern Galactic disc and was one of the first microlensing events detected and alerted to by the Gaia space mission. Its light curve ...
  • Nagaraju, K; Phanindra, D. V. S; Krishna Prasad, S; Shankar Rao, D. S; Sreekumar, P (SPIE-The International Society for Optical Engineering, 2018-07-06)
    In a dual-frequency liquid crystal (DFLC), when the frequency of the applied voltage is more than a critical value (fc), the dielectric anisotropy of the material changes from positive to negative. This causes the director ...
  • Ravindra, B; Prabhu, K; Rangarajan, K. E; Bagare, S. P; Singh, J; Kemkar, P. M. M; Thulasidharen, K. C; Gabriel, F; Selvendran, R (IOP Publishing, 2016-08)
    This paper reports on the installation and observations of a new solar telescope installed on 2014 October 7 at the Kodaikanal Observatory. The telescope is a refractive type equipped with a tunable Lyot Hα filter. A CCD ...
  • Arun, R; Mathew, Blesson; Manoj, P; Maheswar, G; Shridharan, B; Kartha, Sreeja S; Narang, Mayank (Oxford University Press on behalf of Royal Astronomical Society, 2023-08)
    This study presents the largest mid-infrared spectral catalogue of Herbig Ae/Be stars to date, containing the Spitzer Infrared Spectrograph spectra of 126 stars. Based on the catalogue analysis, two prominent infrared ...

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