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  1. Article

    Huge explosion in the early Universe

    The γ-ray burst GRB 050904, detected by the Swift satellite on 4 September last year, is one of the most distant objects ever observed. Its redshift of z = 6.3 equates to an explosion taking place 12.8 billion ye...

    G. Cusumano, V. Mangano, G. Chincarini, A. Panaitescu, D. N. Burrows… in Nature (2006)

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    An origin for short γ-ray bursts unassociated with current star formation

    Gamma-ray bursts (GRBs) are either ‘long and soft’, or ‘short and hard’. It is now clear that the long-duration type are caused by explosions of massive stars in distant star-forming galaxies. Only in recent m...

    S. D. Barthelmy, G. Chincarini, D. N. Burrows, N. Gehrels, S. Covino, A. Moretti… in Nature (2005)

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    A short γ-ray burst apparently associated with an elliptical galaxy at redshift z = 0.225

    Gamma-ray bursts (GRBs) are either ‘long and soft’, or ‘short and hard’. The long-duration type leave a strong afterglow and have been extensively studied. So we have a good idea of what causes them: explosion...

    N. Gehrels, C. L. Sarazin, P. T. O'Brien, B. Zhang, L. Barbier, S. D. Barthelmy… in Nature (2005)

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    An unexpectedly rapid decline in the X-ray afterglow emission of long γ-ray bursts

    The Swift satellite, launched in November last year, is designed to study γ-ray bursts (GRBs) as soon as they happen. GRBs are the most powerful explosions known in the Universe, and Swift's ability to study t...

    G. Tagliaferri, M. Goad, G. Chincarini, A. Moretti, S. Campana, D. N. Burrows… in Nature (2005)