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Browsing IIAP Publications by Title

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  • Influence of the solar activity on the Indian Monsoon rainfall 
    Hiremath, K. M; Mandi, P. I (Elsevier, 2004-10)
    We use 130 years data for studying correlative effects due to solar cycle and activity phenomena on the occurrence of the Indian Monsoon rainfall. We compute the correlation coefficients and significance of correlation ...
  • Influence of Thomson Electron Scattering Redistribution on Spectral Line Polarization Formed in Spherically Symmetric Extended and Expanding Atmospheres 
    Sampoorna, M; Megha, A; Supriya, H. D (American Astronomical Society, 2022-09-20)
    Scattering of line photons by ambient electrons in thermal motion in the stellar atmosphere modifies the wings of both intensity and linear polarization profiles of the spectral lines. The aim of the present paper is to ...
  • Influence of variable permeability on combined free and forced convection about inclined surfaces in porous media 
    Chandrasekhara, B. C; Namboodiri, P. M. S (Elsevier, 1985-01)
    The analysis is carried out for mixed convection about inclined surfaces in a saturated porous media incorporating the variation of permeability and thermal conductivity due to packing of particles. Similarity solutions ...
  • Information flow due to controlled interference in entangled systems 
    Srikanth, R (Indian Academy of Sciences, 2002-08)
    We point out that controlled quantum interference corresponds to measurement in an incomplete basis and implies a nonlocal transfer of classical information. A test of whether such a generalized measurement is permissible ...
  • The infrared imaging spectrograph (IRIS) for TMT: latest science cases and simulations 
    Wright, S. A; Walth, G; Do, T; Marshal, D; Larkin, J. E; Moore, A. M; Adamkovics, M; Andersen, D; Armus, L; Barth, A; Cote, Patrick; Cooke, J; Chisholm, E. M; Davidge, T; Dunn, J. S; Dumas, C; Ellerbroek, B. L; Ghez, A. M; Hao, J; Hayano, Y; Liu, M; Lopez-Rodriguez, E; Lu, J. R; Mao, S; Marois, C; Pandey, S. B; Phillip, A. C; Schoeck, M; Subramaniam, A; Subramanian, S; Suzuki, R; Tan, J. C; Terai, T; Treu, T; Simard, L; Weiss, J. (SPIE-The International Society for Optical Engineering, 2016-07)
    The Thirty Meter Telescope (TMT) first light instrument IRIS (Infrared Imaging Spectrograph) will complete its preliminary design phase in 2016. The IRIS instrument design includes a near-infrared (0.85 - 2.4 micron) ...
  • Infrared observations of UV CAS 
    Kameswara Rao, N (The Observatory, 1980-10)
  • Infrared Photometer system for Astronomical Observations 
    Shivanandan, K; Scaria, K. K; Nair, R. M; Rajamohan, R; Sivaraman, K. R (Indian Institute of Astrophysics, Bangalore, 1987)
    An infrared photometer system has been developed for photometry of astronomical sources in the spectral band 1 to 5 microns. The characteristics of the system and preliminary engineering tests using the 1- m optical ...
  • Infrared polarisation study of Lynds 1340: A case of RNO 8 
    Rai, Archita; Ganesh, Shashikiran (Indian Academy of Sciences, 2023-06)
    This paper describes the polarisation study of a Lynds cloud, LDN 1340, α = 2h32m and δ = 73◦00 corresponding to galactic coordinates of = 130◦.07 and b = 11◦.6, with emphasis on the RNO 8 area. The cloud has been ...
  • Infrared properties of planetary nebulae with [WR] and wels central stars 
    Muthumariappan, C; Parthasarathy, M (Oxford University Press on behalf of the Royal Astronomical Society, 2020-03)
    We report the infrared (IR) properties of planetary nebulae (PNe) with Wolf–Rayet (WR) type and wels central stars known to date and compare them with the IR properties of a sample of PNe with H-rich central stars. We use ...
  • Infrared Solar Radiation Measurement during Total Solar Eclipse 
    Jain, S. L; Arya, B. C; Singh, S. K; Tripathi, O. P; Hamid, A (Indian Institute of Astrophysics, Bangalore, 1997)
    The occurrence of Total Solar Eclipse on October 24, 1995 provided an unique opportunity to conduct some experiments using IR sun photometers in the spectral range 0.75 micrometer to 1.6 micrometer and 205 to 14.5 micrometer ...
  • Infrared Space Observatory Spectra of R Coronae Borealis Stars. I. Emission Features in the Interval 3-25 Microns 
    Lambert, D. L; Kameswara Rao, N; Pandey, G; Ivans, I. I (American Astronomical Society, 2001-07)
    Infrared Space Observatory 3-25 μm spectra of the R Coronae Borealis stars V854 Cen, R CrB, and RY Sgr are presented and discussed. Sharp emission features coincident in wavelength with the well-known unidentified emission ...
  • Inhibition of convective collapse of solar magnetic flux tubes by radiative diffusion 
    Venkatakrishnan, P (Nature Publishing Group, 1986-07)
    Proctor and Weiss (1982) have indicated that the interaction of convection with a magnetic field leads to an intermittent distribution of magnetic flux. Such a process can lead to 'equipartition fields' of 700 G which ...
  • Initial masses 
    Mallik, D. C. V (International Astronomical Union, 1989)
  • Injection spectrum of ultrahigh energy cosmic rays in the top-down scenario 
    Basu, R; Bhattacharjee, P (The American Physical Society, 2004-07)
    We analyze the uncertainties involved in obtaining the injection spectra of UHECR particles in the top-down scenario of their origin. We show that the Dokshizer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) Q/Sup2 evolution of ...
  • The inner coronagraph on board ADITYA-L1 and automatic detection of CMEs 
    Banerjee, D; Ritesh Patel; Pant, V; ADITYA Team (International Astronomical Union, 2017-07)
    Visible Emission Line Coronagraph (VELC) on board ADITYA-L1 is an internally occulted coronagraph with mirror as its primary objective element. It has a field of view (FOV) starting from 1.05 R –3R. It will observe the ...
  • Innovations and advances in instrumentation at the W. M. Keck Observatory, vol. II 
    Kassis, Marc F; Allen, Steve; Alvarez, Carlos; Banyal, R. K; Bertz, Robert; Beichman, Charles; Brown, Aaron; Brown, Matthew; Cabak, Gerald; Bundy, Kevin; Cetre, Sylvain; Chin, Jason; Chun, Mark; Deich, Will; Dekany, Richard; Delorme, Jacques; Devenot, Mark; Doppmann, Greg; Fitzgerald, Michael P; Fucik, Jason R; Hill, Grant; Hinz, Philip; Holden, Bradford P; Howard, Andrew; Gao, Maodong; Gibson, Steve; Gomez, Percy; Gottschalk, Colby; Gillingham, Peter R; Jones, Tucker; Jovanovic, Nemanja; Kirby, Evan; Konopacky, Quinn; Krishnan, Shanti; Kupke, Renate; Larkin, James E.; Leife, Stephanie D; Lewis, Hilton A; Lilley, Scott; Lu, Jessica; Lyk, James E; MacDonald, Nick; Marin, Eduardo; Matuszewski, Matt; Mawet, Dimitri; McGurk, Rosalie; A Millar-Blanchaer, Maxwell; Nash, Reston B; Nance, Craig; Neill, James D; M. O'Meara, John; Peretz, Eliad; Poppett, Claire L; Mather, John C; Radovan, Matthew V; Roberts, Mitsuko K; Ragland, Sam; Rider, Kodi; Rockosi, Constance M; Sandfor, Dale; Shen, Boqiang; Steidel, Charles C; Simha, Sunil; Skemer, Andy; Stelter, Deno; Surendran, Avinash; Thorne, James; McCarney, Ben; Lanclos, Kyle; Baker, Ashley; Rubenzah, Ryan; Roy, Arpita; Halverson, Sam; Edelstein, Jerry; Martin, Christopher; Savage, Maureen; Sandford, Dale; Sallum, Stephanie; Walawender, Josh; Wizinowich, Peter; Westfall, Kyle B; Vahala, Kerry J; Wright, Shelley; Wold, Truman; Yeh, Sherry (SPIE-The International Society for Optical Engineering, 2022-08)
    Since the start of science operations in 1993, the twin 10-meter W. M. Keck Observatory (WMKO) telescopes have continued to maximize their scientific impact and to produce transformative discoveries that keep the observing ...
  • An Insight into the coupling of CME kinematics in inner and outer corona and the imprint of source regions 
    Majumdar, Satabdwa; Ritesh Patel; Pant, V; Banerjee, D (IOP Publishing, 2021-10-01)
    Despite studying coronal mass ejections (CMEs) for several years, we do not yet have a complete understanding of their kinematics. To this end, it is essential to understand the change in kinematics of the CMEs as they ...
  • Insights into the evolution of symbiotic recurrent novae from radio synchrotron emission: V745 Scorpii and RS Ophiuchi 
    Kantharia, N. G; Dutta, P; Roy, N; Anupama, G. C; Ishwara-Chandra, C. H; Chitale, A; Prabhu, T. P; Banerjee, D. P. K; Ashok, N. M (Oxford University Press on behalf of the Royal Astronomical Society, 2016-02)
    We present observations at 610 and 235 MHz using the Giant Metrewave Radio Telescope (GMRT) of the recurrent nova V745 Scorpii which recorded its last outburst on 2014 February 6. This is the second symbiotic recurrent ...
  • Insights on bar quenching from a multiwavelength analysis: the case of messier 95 
    George, K; Joseph, P; Mondal, Chayan; Subramanian, S; Subramaniam, A; Paul, K. T (EDP Sciences, 2019-01)
    The physical processes related to the effect of bars in the quenching of star formation in the region between the nuclear/central sub-kiloparsec region and the ends of the bar (bar region) of spiral galaxies is not fully ...
  • Installation of solar chromospheric telescope at the Indian Astronomical Observatory, Merak 
    Ravindra, B; Prabhu, K; Thulasidharen, K. C; Rajalingam, M; Sagayanathan, K; Kamath, P. U; Dorjey, N; Angchuk, D; Kemkar, P. M. M; Dorjai, T; Banyal, R. K (Indian Academy of Sciences, 2018-10)
    We report the observations of the solar chromosphere from a newly commissioned solar telescope at the incursion site near Pangong Tso lake in Merak (Leh/Ladakh). This new Hα telescope at the Merak site is identical to the ...

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