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Browsing IIAP Publications by Title

Browsing IIAP Publications by Title

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  • Bhattacharjee, P; Sahu, N; Yajnik, U.A (American Physical Society, 2004-10)
    Cosmic strings arising from breaking of the $U(1)_{B-L}$ gauge symmetry that occurs in a wide variety of unified models can carry zero modes of heavy Majorana neutrinos. Decaying and/or repeatedly self-interacting closed ...
  • Sahoo, B. K; Das, B. P (American Physical Society, 2012-08)
    Three different measurements have been reported for the ground-state quadrupole polarizability in singly ionized barium (Ba+) which disagree with each other. Our calculation of this quantity using the relativistic ...
  • Sreejith, A. G; Mathew, J; Mayuresh, Sarpotdar; Nirmal, K; Ambily, S; Prakash, A; Safonova, M; Murthy, J (SPIE-The International Society for Optical Engineering, 2016-08)
    The ultraviolet (UV) window has been largely unexplored through balloons for astronomy. We discuss here the development of a compact near-UV spectrograph with fiber optics input for balloon flights. It is a modified ...
  • Sahu, N; Bhattacharjee, P; Yajnik, U. A (Elsevier, 2006-09)
    We study the effect on leptogenesis due to B L cosmic strings of a U1 extension of the Standard Model. The disappearance of closed loops of B L cosmic strings can produce heavy right handed neutrinos, N's, whose CP-asymmetric ...
  • Sanwal, N. B; Sarma, M. B. K; Parthasarathy, M; Abhyankar, K. D (European Southern Observatory, 1974-01)
  • Mathew, B; Subramaniam, A; Bhatt, B. C (The Royal Astronomical Society, 2008-08)
    Emission-line stars in young open clusters are identified to study their properties, as a function of age, spectral type and evolutionary state. 207 open star clusters were observed using the slitless spectroscopy method ...
  • Mathew, B; Subramaniam, A; Bhatt, B. C (Institute de Astronomia, 2010-02)
    Emission-line stars in young open clusters are identified to study their properties, as a function of age, spectral type and evolutionary state. 207 open star clusters were observed using slitless spectroscopy method and ...
  • Saraswat, P; Apparao, K. M. V (International Astronomical Union, 1994)
  • Meech, K. J; Schambeau, C. A; Sorli, K; Kleyna, J; Micheli, M; Bauer, J; Denneau, L; Keane, J. V; Toller, E; Wainscoat, R; Hainaut, O; Bhatt, B. C; Sahu, D. K; Yang, B; Kramer, E; Magnier, G (IOP Publishing, 2017-05)
    We report the beginning of activity for comet C / 2015 ER61 ( PANSTARRS ) , the fi rst instance of watching a long- period comet turn on. Pre-discovery observations and observations from the NEOWISE space telescope ...
  • Shylaja, B. S (International Astronomical Union, 1987)
    The binaries with subgroup WN components have been chosen, with periods ranging from 1.64 d to 21.63 d, for understanding the effect of the companion on the formation of this line.
  • Smith, C. M (Wiley, 1910-03)
  • Park, C; Pranav, P; Pravabati, C; Weygaert, R; Jones, B; Vegter, G; Kim, I; Hidding, J; Hellwing, W. A (The Korean Astronomical Society, 2013-06)
    We present the relation between the genus in cosmology and the Betti numbers for excursion sets of three- and two-dimensional smooth Gaussian random fields, and numerically investigate the Betti numbers as a function of ...
  • Kameswara Rao, N; Vagiswari, A; Birdie, C (Indian Academy of Sciences, 2014-02-25)
    In the last decade of the 19th century Maharaja Takhtasingji Observatory was built at Poona (1888–1912) under the supervision of K. D. Naegamvala, with the grant from Maharaja of Bhavnagar (from where the name Bhavnagar ...
  • Senthil Kumar, N; Radhakrishnan, N; Hadimani, Nagesh; Prabahar, P (Journal of Advances in Library and Information Science, 2018-01)
    Bibliometrics is one of the techniques to analyze the quantitative literature and can be applied to research articles published in national, international journals on related articles. This paper deals with the bibliometric ...
  • Iqbalahmad, U. Rajgoli; Ghouse Modin, N. Mamdapur; Prabahar, P (JALIS, 2017-03)
    The bibliometric portrait of Journal of the Indian Society of Remote Sensing concentrates on four decades publication trends from 1973-2014. The study analyzed 1310 research articles published in 140 issues of the journal. ...
  • Miroshnichenko, A. S; Zharikov, S.V; Korcakova, D; Manset, N; Mennickent, R; Khokhlov, S. A; Danford, S; Raj, A; Zakhozhay, O.V (Astronomical Institute of the Slovak Academy of Sciences, 2020-03)
    Many B-type stars exhibit two phenomena that are symbolized Be and B[e]. The former refers to presence of a circumstellar gaseous disk without significant circumstellar dust, while the latter have dust. Although neither ...
  • Sahai, R; Contreras, C. S; Mangan, A. S; Sanz-Forcada, J; Muthumariappan, C; Claussen, M. J (IOP Publishing, 2018-06-20)
    Binarity is believed to dramatically affect the history and geometry of mass loss in AGB and post-AGB stars, but observational evidence of binarity is sorely lacking. As part of a project to search for hot binary companions ...
  • Sengupta, S (Elsevier, 2000-07)
    A binary stellar system loses its orbital rotational energy by the emission of gravity wave. If there exists a charge asymmetry between electron and proton then the system would also lose its orbital rotational energy due ...
  • Saleh, P. R; Hazarika, D; Dar, A. A; Parihar, P. S; Saikia, E (IOP Publishing, 2019-11)
    A rarely studied open cluster, King 1 is observed using the 1.3-m telescope equipped with a 2k × 4k CCD at Vainu Bappu Observatory, India. We analyze the photometric data obtained from CCD observations in both B and V ...
  • Bobrowsky, M; Sahu, K. C; Parthasarathy, M; García-Lario, P (Nature Publishing Group, 1998-04)
    The final expulsion of gas by a star as it forms a planetary nebula - the ionized shell of gas often observed surrounding a young white dwarf - is one of the most poorly understood stages of stellar evolution,. Such nebulae ...

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