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Constraining the energy budget of GRB 080721
R. L. C. Starling, E. Rol, A. J. van der Horst +17
We follow the bright, highly energetic afterglow of Swift-discovered GRB 080721 at z=2.591 out to 36 days or 3e6 s since the trigger in the optical and X-ray bands. We do not detec…
Late time observations of GRB080319B: jet break, host galaxy and accompanying supernova
Nial R. Tanvir, Evert Rol, Andrew Levan +15
The Swift discovered GRB080319B was by far the most distant source ever observed at naked eye brightness, reaching a peak apparent magnitude of 5.3 at a redshift of z=0.937. We pre…
GRB 080503: Implications of a Naked Short Gamma-Ray Burst Dominated by Extended Emission
D. A. Perley, B. D. Metzger, J. Granot +22
We report on observations of GRB 080503, a short gamma-ray burst with very bright extended emission (about 30 times the gamma-ray fluence of the initial spike) in conjunction with…
GRB 080913 at redshift 6.7
J. Greiner, T. Kruehler, J. P. U. Fynbo +44
We report on the detection by Swift of GRB 080913, and subsequent optical/near-infrared follow-up observations by GROND which led to the discovery of its optical/NIR afterglow and…
SCP06F6: A carbon-rich extragalactic transient at redshift z~0.14?
B. T. Gaensicke, A. J. Levan, T. R. Marsh +1
We show that the spectrum of the unusual transient SCP06F6 is consistent with emission from a cool, optically thick and carbon-rich atmosphere if the transient is located at a reds…
GRB 070714B - Discovery of the Highest Spectroscopically Confirmed Short Burst Redshift
J. F. Graham, A. S. Fruchter, A. J. Levan +10
We detect the optical afterglow and host galaxy of GRB 070714B. Our observations of the afterglow show an initial plateau in the lightcurve for approximately the first 5 to 25 minu…