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  • Galaxy outflows without supernovae 
    Sur, Sharanya; Scannapieco, E; Ostriker, E. C (IOP Publishing, 2016-02)
    High surface density, rapidly star-forming galaxies are observed to have ≈ 50 – 100 km s − 1 line of sight velocity dispersions, which are much higher than expected from supernova driving alone, but may arise from ...
  • Galex diffuse observations of the sky: the data 
    Murthy, J (IOP Publishing, 2014-08)
    I present tabulations of the diffuse observations made by the GALEX spacecraft in two UV bands (FUV: 1539 Å and NUV: 2316 Å) from the (almost) final data release of the GALEX spacecraft (GR6/GR7). This data release includes ...
  • GALEX Observations of Diffuse Ultraviolet Emission from Draco 
    Sujatha, N. V; Murthy, J; Suresh, R; Henr, R. C; Bianchi, L (IOP Publishing, 2010-11-10)
    We have studied small-scale (2') spatial variation of the diffuse ultraviolet (UV) radiation using a set of 11 Galaxy Evolution Explorer deep observations in the constellation of Draco. We find a good correlation between ...
  • GALEX observations of diffuse UV radiation at high spatial resolution from the Sandage Nebulosity 
    Sujatha, N. V; Murthy, J; Karnataki, A; Henry, R. C; Bianchi, L (The American Astronomical Society, 2009-02)
    We have observed a region of nebulosity first identified as starlight scattered by interstellar dust by Sandage using the Galaxy Evolution Explorer (GALEX) ultraviolet imaging telescope. Apart from airglow and zodiacal ...
  • Gamma astronomy from space and from ground 
    Fleury, P (Astronomical Society of India, 2002)
    Ground based observations has come of age with the advent of the Whipple imaging telescope 10 years ago. The decade that followed has been a period of consolidation, with several detectors of performance comparable to that ...
  • Gamma ray analysis in planetary mapping 
    Yadav, J. S; Arnold, J. R (Astronomical Society of India, 1993)
    n this work, we present ways to improve the analysis procedure for high resolution gamma ray planetary mapping. This study is aimed at providing better analysis procedures for the Gamma Ray Spectrometer (GRS) experiment ...
  • Gamma ray and hadron generated Cverenkov photon spectra at various observation altitudes 
    Rahman, M. A; Bhat, P. N; Acharya, B. S; Chitnis, V. R; Majumdar, P; Vishwanath, P. R (Astronomical Society of India, 2002)
    We have studied the propagation of Cverenkov photons generated by Very High Energy gamma-rays and hadrons in the atmosphere. Photon production height distributions derived from semi-empirical methods agree with those ...
  • Gamma ray astronomy : New Indian initiatives 
    Bhat, C. L (Astronomical Society of India, 2000)
    In this brief review, major new initiatives presently under implementation in India in the field of gamma-ray astronomy are discussed in the backdrop of the just-concluded exploratory phase in the field.
  • Gamma Ray Astronomy in the Forefront again? 
    Lavakare, P. J (Astronomical Society of India, 1973)
  • Gamma Ray Burst Data Analysis: Algorithms and Procedure 
    Sinha, S (Astronomical Society of India, 2003)
    In Gamma Ray Burst experiments it is very important to obtain realistic and accurate estimates of the Burst parameters, viz. the event trigger time, the duration, peak hardness ratio, peak fluxes and fluences in different ...
  • The Gamma Ray Burst experiment on the Indian SROSS C-2 satellite 
    Sinha, S; Sreekumar, P; Kasturirangan, K (Astronomical Society of India, 2001)
    The SROSS C-2 satellite launched by the ASLV carried aloft a CsI gamma ray burst detector. To date, 51 GRB events have been detected unambiguously with 22 being common with BATSE. The experiment with its 2 ms time resolution, ...
  • Gamma ray bursts at high energies : detection ranges and event rates 
    Shanthi, K; Kaul, C. L; Kaul, R. K; Tickoo, A. K; Bhat, C. L (Astronomical Society of India, 2002)
    The Gamma-Ray Burst (GRB) detection rates at energies ? 20GeV, have been estimated for the 3 atmospheric Cerenkov telescope systems of the GRACE project at Mt. Abu, under the assumption that the bursts have a cosmological ...
  • Gamma ray effect on life 
    Sivaram, C (Deccan Herald, 2007-01-09)
  • Gamma ray observations of polars 
    Bhat, C. L (Astronomical Society of India, 1990)
    Experimental evidence is reported for the discovery of an entirely new class of gamma-ray binary objects involving a magnetic white dwarf rather than a neutron star degenerate primary. These sources may have photon energies ...
  • Gamma ray production in SNR's -contribution from photomeson process 
    Bhattacharya, S; Kaul, R. K; Kaul, C. L; Bhat, C. L (Astronomical Society of India, 1999)
    We estimate the integral γ-ray fluxes above 10 MeV photon energy, likely to result from neutral pion decay, following photomeson interactions between ultra-high energy protons accelerated in Supernova Remnants (SNR) and ...
  • Gamma ray telescope getting ready in Leh 
    Sunderarajan, P (The Hindu, 2011-06-18)
  • Gamma-hadron separation using Cverenkov photon density fluctuations 
    Chitnis, V. R; Bhat, P. N (Astronomical Society of India, 2002)
    In atmospheric Cverenkov technique gamma-rays are detected against abundant background produced by hadronic showers. In order to improve signal to noise ratio of the experiment, it is necessary to reject a significant ...
  • Gamma-ray astronomy activities in BARC - an introductory note 
    Razdan, H (Astronomical Society of India, 1997)
  • Gamma-ray astronomy activities in BARC - Past contributions and present challenges 
    Razdan, H; Bhat, C. L (Astronomical Society of India, 1997)
    It was in the early seventies that we made a modest start in the Nuclear Research Laboratory (NRL) of the Bhabha Atomic Research Centre (BARC) in the then-budding field of observational gamma-ray astronomy by setting up ...
  • Gamma-Ray Blazars within the first 2 billion years 
    Ackermann, M; Ajello, M; Baldini, L; Ballet, J; Barbiellini, G; Bastieri, D; Becerra Gonzalez, J; Bellazzini, R; Bissaldi, E; Blandford, R. D; Bloom, E. D; Bonino, R; Bottacini, E; Bregeon, J; Bruel, P; Buehler, R; Buson, S; Cameron, R. A; Caragiulo, M; Caraveo, P. A; Cavazzut, E; Cecchi, C; Cheung, C. C; Chiang, J; Chiaro, G; Ciprini, S; Conrad, J; Costantin, D; Costanza, F; Cutini, S; D'Ammando, F; de Palma, F; Desiante, R; Digel, S. W; Di Lalla, N; Di Mauro, M; Di Venere, L; Domi­nguez, A; Drell, P. S; Favuzzi, C; Fegan, S. J; Ferrara, E. C; Finke, J; Focke, W. B; Fukazawa, Y; Funk, S; Fusco, P; Gargano, F; Gasparrini, D; Giglietto, N; Giordano, F; Giroletti, M; Green, D; Grenier, I. A; Guillemo, L; Guiriec, S; Hartmann, D. H; Hays, E; Marcotulli, L; Horan, D; Jogler, T; Johannesson, G; Johnson, A. S; Kuss, M; Mura, G. La; Larsson, S; Latronico, L; Li, J; Longo, F; Mazziotta, M. N; Loparco, F; Lovellette, M. N; Lubrano, P; Magill, J. D; Maldera, S; Manfreda, A; Michelson, P. F; Mirabal, N; Mitthumsiri, W; Mizuno, T; Monzani, M. E|; Morselli, A; Moskalenko, I. V; Negro, M; Rando, R; Nuss, E; Ohsugi, T; Ojha, R; Omodei, N; Orienti, M; Orlando, E; Ormes, J. F; Paliya, V. S; Paneque, D; Perkins, J. S; Rani, B; Persic, M; Pesce-Rollins, M; Piron, F; Porter, T. A; Principe, G; Raino, S; Razzano, M; Razzaque, S; Reimer, A; Reimer, O; Roman, R. W; Sgro, C; Simone, D; Siskind, E. J; Spada, F; Spandre, G; Spinelli, P; Stalin, C. S; 12 others (IOP Publishing, 2017-03-01)
    The detection of high-redshift ($z\,\gt 3$) blazars enables the study of the evolution of the most luminous relativistic jets over cosmic time. More importantly, high-redshift blazars tend to host massive black holes and ...

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