Mohit Tanga

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A new class of ultra-long-duration (more than 10,000 seconds) γ-ray bursts has recently been suggested. They may originate in the explosion of stars with much larger radii than those producing normal long-duration γ-ray bursts or in the tidal disruption of a star. No clear supernova has yet been associated with an ultra-long-duration γ-ray burst. Here we(More)
Jochen Greiner 1,2 , Paolo A. Mazzali 3,4 , D. Alexander Kann, Thomas Krühler, Elena Pian 7,8 , Simon Prentice, Felipe Olivares E., Andrea Rossi 5,7 , Sylvio Klose, Stefan Taubenberger 4,10 , Fabian Knust, Paulo M.J. Afonso, Chris Ashall, Jan Bolmer 1,12 , Corentin Delvaux, Roland Diehl, Jonathan Elliott 1,17 , Robert Filgas, Johan P.U. Fynbo, John F.(More)
We present multiwavelength observations of the afterglow of GRB130427A, the brightest (in total fluence) gamma-ray burst of the past 29 years. Optical spectroscopy from Gemini-North reveals the redshift of the GRB to be z = 0.340, indicating that its unprecedented brightness is primarily the result of its relatively close proximity to Earth; the intrinsic(More)
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