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Browsing by Subject "Techniques: interferometric"

Browsing by Subject "Techniques: interferometric"

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  • Electron Cooling in a Young Radio Supernova: SN 2012aw 
    Yadav, N; Ray, A; Chakraborti, S; Stockdale, C; Chandra, P; Smith, R; Roy, R; Bose, S; Dwarkadas, V; Sutaria, F. K; Pooley, D (IOP Publishing, 2014-02-10)
    We present the radio observations and modeling of an optically bright Type II-P supernova (SN), SN 2012aw which exploded in the nearby galaxy Messier 95 (M95) at a distance of 10 Mpc. The spectral index values calculated ...
  • Explosive and radio-selected transients: transient astronomy with square kilometre array and its precursors 
    Chandra, P; Anupama, G. C; Arun, K. G; Iyyani, S; Misra, K; Narasimha, D; Ray, A; Resmi, L; Roy, S; Sutaria, F. K (Springer, 2016-12)
    With the high sensitivity and wide-field coverage of the Square Kilometre Array (SKA), large samples of explosive transients are expected to be discovered. Radio wavelengths, especially in commensal survey mode, are ...
  • GMRT H I study of giant low surface brightness galaxies 
    Mishra, A; Kantharia, N. G; Das, Mousumi; Omar, A; Srivastava, D. C (Oxford University Press on behalf of the Royal Astronomical Society, 2017-01)
    We present H I observations of four giant low surface brightness (GLSB) galaxies UGC 1378, UGC 1922, UGC 4422 and UM 163 using the Giant Meterwave Radio Telescope. We include H I results on UGC 2936, UGC 6614 and Malin 2 ...
  • Speckle imaging with hypertelescopes 
    Surya, A; Saha, S. K; Labeyrie, A (Oxford University Press on behalf of the Royal Astronomical Society, 2014-09-01)
    Optical stellar interferometers have demonstrated milliarcsecond resolution with few apertures spaced hundreds of metres apart. To obtain rich direct images, many apertures will be needed, for a better sampling of the ...
  • A VLA–GMRT look at 11 powerful FR II quasars 
    Vaddi, Sravani; Kharb, P; Daly, R. A; O’Dea, C P; Baum, S. A; Deo, D.K; Barbusca, T.C; Murali, Chintak (Oxford University Press on behalf of the Royal Astronomical Society, 2019-03)
    We present results from 1.4 and 5 GHz observations at matched resolution with the Karl G. Jansky Very Large Array (VLA) of 11 powerful 3C FR II quasars. We examine the 11 quasars along with a sample of 13 narrow-line FR II ...
  • VLTI-AMBER velocity-resolved aperture-synthesis imaging of η· Carinae with a spectral resolution of 12 000 
    Weigelt, G; Hofmann, K. H; Schertl, D; Clementel, N; Corcoran, M. F; Damineli, A; De Wit, W. J; Grellmann, R; Groh, J; Guieu, S; Gull, T; Heininger, M; Hillier, D. J; Hummel, C. A; Kraus, S; Madura, T; Mehner, A; Merand, A; Millour, F; Moffat, A. F. J; Ohnaka, K; Patru, F; Petrov, R. G; Sridharan, R; Richardson, N. D; Rivinius, T; Scholler, M; Teodoro, M; Wittkowski, M (EDP Sciences, 2016-10)
    Context. The mass loss from massive stars is not understood well. η Carinae is a unique object for studying the massive stellar wind during the luminous blue variable phase. It is also an eccentric binary with a period of ...

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