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  • Intensity variation in sunspots 
    Ananthakrishnan, R (Nature Publishing Group, 1951-08)
    The most conspicuous and readily observed feature of a normal sunspot is a dark central umbra surrounded by a less dark penumbral fringe which, under good seeing conditions, appears to be composed of converging filaments ...
  • Intensity Variation of Photons During the Solar Eclipse 
    Chandole, S. V; Shah, S. S (Tata Institute of Fundamental Research, Bombay, 1980-06)
    The study was aimed to determine the variation of intensity of photons from the Sun during solar eclipse at Aurangabad (altitude 586 meters, latitude 19 degree 5' and longitude 95 degree 24'). It was carried out with the ...
  • Intensity Weighted Noise Reduction in MEMS Based Deformable Mirror Images 
    Roopashree, M. B; Vyas, A; Prasad, B. R (American Institute of Physics, 2011-10)
    The frames captured with a compact, high-resolution, monochrome progressive scan CCD camera, of a continuous facesheet microelectromechanical systems (MEMS) deformable mirror (DM), include unwanted diffractive, background ...
  • Inter-planetary magnetic-field and equatorial ionosphere 
    Sastri, J. H (European Geophysical Society, 1980)
  • Interacting system NGC 7805/6 (Arp 112) and its tidal dwarf galaxy candidate 
    Fu, Zhen-Xing; Sengupta, Chandreyee; Ramya, S; Pradhan, Bikram; Singh, Mridweeka; Misra, K; Scott, Tom. C; Ma, Yin-Zhe (IOP Publishing, 2021-02)
    We present results from our Giant Metrewave Radio Telescope (GMRT) Hi, Himalayan Chandra Telescope (HCT) Hα, 1 m Sampurnanand Telescope (ST) and 1.3 m Devasthal Fast Optical Telescope (DFOT) deep optical observations of ...
  • The interaction principle in radiative transfer 
    Peraiah, A (D. Reidel Publishing Co., 1984-10)
    We describe the interaction principle which is of fundamental importance to the theory of radiative transfer in one-, two-, and three-dimensional geometry. We also describe the practical difficulties associated with this ...
  • Interaction-Free Measurements of the Second Type: Concepts and Proposal for a Feasible Experiment 
    Unnikrishnan, C. S (Springer, 2001-09)
    Wave aspects inherent in quantum physics lead to observable consequences, which are far removed from classical intuition. The possibility of interaction-free measurement is one consequence of quantum wave nature at the ...
  • Interactions of UHE cosmic ray neutrinos with the cosmological neutrino background 
    Sivaram, C; Gandhi, R (International Union of Pure and Applied Physics, 1995)
    Apart from the cosmic microwave radiation background, the standard cosmology predicts a thermal neutrino background with a temperature around 20K. Methods suggested to detect such a background, include anomalous forces ...
  • Interfacial hydromagnetic waves with shear and inclined magnetic fields 
    Satya Narayanan, A; Ramesh, R (Astronomical Society of India, 2002-09)
    The combined effect of non-parallel propagation, steady :flow and inclined magnetic field on the . propagation characteristics of hydromagnetic surface waves is examined. The fluid is assumed to be perfectly conducting ...
  • Interference filter photometry of weak emission lines in CQ Cephei 
    Bappu, M. K. V; Sinvhal, S. D (Taylor and Francis, 1959-08)
  • Interference of the running waves at light bridges of a sunspot 
    Su, J. T; Ji, K. F; Banerjee, D; Cao, W. D; Priya, T. G; Zhao, J. S; Yu, S. J; Ji, H. S; Zhang, M (IOP Publishing, 2016-01-01)
    The observations of chromospheric oscillations of two umbral light bridges (LBs) within a sunspot from NOAA Active Region 12127 are presented. It was found that the running umbral waves with periods of 2.2–2.6 minutes ...
  • Interferometric Eclipse Observations of Coronal Fe XIV Emission 
    Smartt, R. N; Zirker, J. B; Mauter, H. A (Tata Institute of Fundamental Research, Bombay, 1980-06)
    An experiment carried out during the February 16, 1980 total solar eclipse to measure velocities and intensity distributions associated with coronal loops is described. The optical instrumentation used consisted of a 30-cm ...
  • Interior and exterior clues of solar activity 
    Turck-Chièze, S; Brun, A. S; Duez, V; García, R. A; Mathis, S; Piau, L; Salabert, D; Pallé, P. L; Jiménez-Reyes, S. J; Mathur, S; Simoniello, R; Robillot, J. M (Springer, 2010)
    Two research paths are described to obtain better understanding of the origin of global solar activity. First, observations with a multichannel resonant spectrometer may reveal the dynamics of the solar core, the tachocline, ...
  • Intermediate Galactic Latitude Starforming Region-CG 12 
    Maheswar, G; Manoj, P; Bhatt, H. C (Astronomical Society of India, 2002-09)
    Optical linear polarization measurements of stars seen projected towards CG 12, an intermediate latitude (b = 2P .1) starforming cloud, have been made. The results show that the polarization vectors of the majority of the ...
  • Intermediate Galactic Latitude Starforming Region-CG 12 
    Maheswar, G; Manoj, P; Bhatt, H. C (Astronomical Society of India, 2002-09)
    Optical linear polarization measurements of stars seen projected towards CG 12, an intermediate latitude (b = 2P .1) starforming cloud, have been made. The results show that the polarization vectors of the majority of the ...
  • Intermediate luminosity type Iax supernova 2019muj with narrow absorption lines: long-lasting radiation associated with a possible bound remnant predicted by the weak deflagration model 
    Kawabata, Miho; Maeda, Keiichi; Yamanaka, Masayuki; Nakaoka, Tatsuya; Kawabata, Koji S; Aoki, Kentaro; Anupama, G. C; Burgaz, Umut; Anirban Dutta; Isogai, Keisuke; Kino, Masaru; Kojiguchi, Naoto; Kota, Iida; Brajesh Kumar; Kuroda, Daisuke; Maehara, Hiroyuki; Matsubayash, Kazuya; Morihana, Kumiko; Murata, Katsuhiro L; Ohshima, Tomohito; Otsuka, Masaaki; Sahu, D. K; Avinash Singh; Sugitani, Koji; Takahashi, Jun; Takagi, Kengo (Oxford University Press on behalf of the Astronomical Society of Japan, 2021-10)
    We present comprehensive spectroscopic and photometric analyses of the intermediate luminosity type Iax supernova (SN Iax) 2019muj based on multi-band datasets observed through the framework of the OISTER target-of-opportunity ...
  • Intermediate Mass Black Holes: Their Motion and Associated Energetics 
    Sivaram, C; Arun, K (Hindawi Publishing Corporation, 2014)
    There is a lot of current astrophysical evidence and interest in intermediate mass black holes (IMBH), ranging from a few hundred to several thousand solar masses.The active galaxy M82 and the globular cluster G1 in M31, ...
  • The intermediate polar cataclysmic variable GK Persei 120 years after the nova explosion: a first dynamical mass study 
    Alvarez-Hernandez, A; Torre, M. A. P; Rodriguez-Gil, P; Shahbaz, T; Anupama, G. C; Gazeas, K. D; Pavana, M; Raj, A; Hakala, P; Stone, G; Gomez, S; Jonker, P. G; Ren, J.- J; Cannizzaro, G; Pastor-Marazuela, I; Goff, W; Corral-Santana, J. M; Sabo, R (Oxford University Press on behalf of Royal Astronomical Society, 2021-11)
    We present a dynamical study of the intermediate polar and dwarf nova cataclysmic variable GK Persei (Nova Persei 1901) based on a multisite optical spectroscopy and R-band photometry campaign. The radial velocity curve ...
  • The Intermediate Polar PQ GEM -- Status of Wet Observations of 1996 
    Marar, T. M. K; Seetha, S; Ashoka, B. N; Kasturirangan, K; Mahra, H. S; Bhattacharyya, J. C; Leibowitz, E. M; Hemar, S; Mendelson, H; Ibbetson, P. A; O'Donoghue, D; Buckley, D. A. H; Breger, M; Handler, G; Sperl, M; Serkowitsch, E; Moskalik, P; Zola, S; Pajdosz, G; Krzesinski, J; Silvotti, R; Vauclair, G; Dolez, N; Solheim, J. E; Pfeiffer, B; Kepler, S. O; Kanaan, A; Provencal, J; Kawaler, S. D; O'Brien, M. S; Nather, R. E; Winget, D. E; Kleinman, S; Nitta, A; Bradley, P. A; Guzik, J. A; Clemens, C; Sullivan, D. J; Jiang, X (Baltic Astronomy, 1998-03)
    A summary of the results on PQ Gem based on WET observations conducted in February 1996 is presented. The 13.9 min spin period of the white dwarf in the system and the orbital side-band at 14.5 min have been detected ...
  • Intermediate-luminosity Type IIP SN 2021gmj: a low-energy explosion with signatures of circumstellar material 
    Murai, Yuta; Tanaka, Masaomi; Kawabata, Miho; Taguchi, Kenta; Teja, Rishabh Singh; Nakaoka, Tatsuya; Maeda, Keiichi; Kawabata, Koji S; Nagao, Takashi; Moriya, Takashi J; Sahu, D. K; Anupama, G. C; Tominaga, Nozomu; Morokuma, Tomoki; Imazawa, Ryo; Inutsuka, Satoko; Isogai, Keisuke; Kasuga, Toshihiro; Kobayashi, Naoto; Kondo, Sohei; Maehara, Hiroyuki; Mori, Yuki; Niino, Yuu; Ogawa, Mao; Ohsawa, Ryou; Okumura, Shin-ichiro; Saito, Sei; Sako, Shigeyuki; Takahashi, Hidenori; Uno, Kohki; Yamanaka, Masayuki (Oxford University Press on behalf of Royal Astronomical Society, 2024-03)
    We present photometric, spectroscopic, and polarimetric observations of the intermediate-luminosity Type IIP supernova (SN) 2021gmj from 1 to 386 d after the explosion. The peak absolute V-band magnitude of SN 2021gmj is ...

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