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  • IRAS observations of R Cor Bor stars 
    Kameswara Rao, N; Nandy, K (Royal Astronomical Society, 1986-09)
    The IRAS observations of R Cr B, SU Tau and V 348 Sgr indicate the existence of a cool dust component of temperature about 30 K in R Cr B and SU Tau and less than or equal to 100 K in V 348 Sgr, in addition to the hot dust. ...
  • Irradiation effects in close binaries in an electron scattering medium 
    Varghese, B. A; Srinivasa Rao, M (Springer, 2016-03)
    In a close binary system, the effects of irradiation are studied from an extended surface of the secondary component on the atmosphere of the primary. Primary and the secondary components are assumed to have equal radii ...
  • Irradiation effects in close binary stars 
    Srinivasa Rao, M; Varghese, B. A (Anita Publications, 2004-12)
    We studied the reflection effect in 2-dimensional geometry to see how the field will change if we calculate the reflected radiation by the transfer equation in a close binary system. The reflected radiation is calculated from ...
  • Irreducible tensor approach to spin observables in the photoproduction of mesons with arbitrary spin-parity s pi 
    Ramachandran, G; Vidya, M. S; Balasubramanyam, J (The American Physical Society, 2007-06)
    A theoretical formalism leading to elegant derivation of formulas for all spin observables is outlined for photoproduction of mesons with arbitrary spin-parity spi. The salient features of this formalism, based on irreducible ...
  • Irregular Singularity of the Magnetorotational Instability in a Keplerian Disk 
    Furukawa, M; Yoshida, Z; Hirota, M; Krishan, V (University of Chicago Press, 2007-04)
    The center of a Keplerian disk is an irregular singularity for the eigenfunctions of magnetorotational instabilities. The system is studied using the small-radius approximation, which by no means implies that the analysis ...
  • Is 21-cm absorption associated with the emission-line regions of quasars? 
    Krishan, V (Royal Astronomical Society, 1988-03)
    The 21-cm absorption line observed in several QSO systems is believed to originate in neutral hydrogen clouds in the vicinity of the QSOs. The aim of this paper is to show that 21-cm absorption can also originate in a ...
  • Is a Deep One-cell Meridional Circulation Essential for the Flux Transport Solar Dynamo? 
    Hazra, G; Karak, B. B; Choudhuri, A. R (IOP Publishing, 2014-02-20)
    The solar activity cycle is successfully modeled by the flux transport dynamo, in which the meridional circulation of the Sun plays an important role. Most of the kinematic dynamo simulations assume a one-cell structure ...
  • Is DZ Andromedae an R Coronae Borealis variable? 
    Goswami, A; Kameswara Rao, N; Lambert, D. L (The Observatory, 1998-08)
    The variable star DZ Andromedae has been suspected to be an R Coronae Borealis variable. Our analysis of a high-resolution spectrum shows that the star has been misclassified: the spectrum resembles that of a K giant. We ...
  • Is Genius Hereditary? Aye, Aye, Sir (CV Raman)! 
    Society (Society, 1984-06)
  • Is HR 2947 a variable? 
    Kameswara Rao, N; Ashok, N. M; Kulkarni, P. V (Astronomical Society of India, 1981-06)
    Observations of HR 2947 show that it is fainter by 0.3 mag in V compared to the magnitude listed by Cowley et al. (1969). The energy distribution from 1565 Armstrong to 1.25 micro is similar to that of a B5 III star and ...
  • Is LR SCO and RCB star? 
    Giridhar, S; Kameswara Rao, N; Lambert, D. L (The Observatory, 1990-08)
  • Is the binding energy of galaxies related to their core black hole mass? 
    Sivaram, C; Arun, K (Indian Academy of Sciences, 2021-10)
    Most of the large galaxies host a supermassive black hole, but their origin is still not well understood. In this paper, we look at a possible connection between the gravitational binding energies of large galaxies, etc., ...
  • Is the Gravitational Constant, G, Changing with Time? 
    Narlikar, J. V (Astronomical Society of India, 1974-12)
  • Is the Hubble flow a result of inverse cascade? 
    Krishan, V (Indian Academy of Sciences, 1996-10)
  • Is the observable Universe consistent with the cosmological principle? 
    Aluri, Pavan Kumar; Cea, Paolo; Pravabati, C; Chu, Ming-Chung; Clowes, Roger G; Hutsemekers, Damien; Kochappan, Joby P; Lopez, Alexia M; Liu, Lang; Martens, Niels C. M; Martins, C. J. A. P; Migkas, Konstantinos; Colgain, Eoin O; Pranav, Pratyush; Shamir, Lior; Singal, Ashok K; Sheikh-Jabbari, M. M; Wagner, Jenny; Wang, Shao-Jiang; Wiltshire, David L; Yeung, Shek; Yin, Lu; Zhao, Wen (IOP Publishing, 2023-05-04)
    The cosmological principle (CP)—the notion that the Universe is spatially isotropic and homogeneous on large scales—underlies a century of progress in cosmology. It is conventionally formulated through the Friedmann-Lem ...
  • Is the Post-AGB Star SAO 40039 Mildly Hydrogen-Deficient? 
    Sumangala Rao, S; Pandey, G; Lambert, D. L; Giridhar, S (IOP Publishing, 2011-08-10)
    We have conducted an LTE abundance analysis for SAO 40039, a warm post-AGB star whose spectrum is known to show surprisingly strong He I lines for its effective temperature and has been suspected of being H-deficient and ...
  • Is the Quantum Mechanical Description of Physical Reality Complete? Proposed Resolution of the EPR Puzzle 
    Unnikrishnan, C. S (Springer, 2002-02)
    The question whether the quantum mechanical description of physical reality could be considered complete was asked in 1935 by Einstein, Podolsky, and Rosen. Subsequent debates and developments lead to the notion that all ...
  • Is the X-ray pulsar H 0253 + 193 a neutron star spun down in a molecular cloud? 
    Bhatt, H. C (The European Southern Observatory, 1990-06)
    The detection of 206s X-ray pulsations from H0253+193 indicates that the source is a compact object. It is argued here that object can not be a T Tauri star or Be/X –ray binary pulsar suggested that H 0253+193 is slowly ...
  • Is the X-ray pulsar H 0253 + 193 a neutron star spun down in a molecular cloud? 
    Bhatt, H. C (The European Southern Observatory, 1990-06)
    The detection of 206s X-ray pulsations from H0253+193 indicates that the source is a compact object. It is argued here that object can not be a T Tauri star or Be/X –ray binary pulsar suggested that H 0253+193 is slowly ...
  • Is there lower limit to velocity or velocity change? 
    Sreenath, B.N; Arun, K; Sivaram, C (Springer, 2013-05)
    Here we explore the possibility of a lower limit to velocity or velocity change which is 20 orders of magnitude smaller than the speed of light and explore the various observable signatures including those in cosmic rays ...

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