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Multiwavelength Observations of the Powerful Gamma-ray Quasar PKS 1510-089: Clues on the Jet Composition
J. Kataoka, G. Madejski, M. Sikora +16
We present the results from a multiwavelength campaign of the powerful Gamma-ray quasar PKS 1510-089. This campaign commenced with a deep Suzaku observation lasting three days for…
Accurate early positions for Swift GRBS: enhancing X-ray positions with UVOT astrometry
M. R. Goad, L. G. Tyler, A. P. Beardmore +15
Here we describe an autonomous way of producing more accurate prompt XRT positions for Swift-detected GRBs and their afterglows, based on UVOT astrometry and a detailed mapping bet…
Photometric Calibration of the Swift Ultraviolet/Optical Telescope
T. S. Poole, A. A. Breeveld, M. J. Page +28
We present the photometric calibration of the Swift UltraViolet/Optical Telescope (UVOT) which includes: optimum photometric and background apertures, effective area curves, colour…
Swift observations of GRB 060614: an anomalous burst with a well behaved afterglow
V. Mangano, S. T. Holland, D. Malesani +22
GRB 060614 is a remarkable GRB observed by Swift with puzzling properties, which challenge current progenitor models. The lack of any bright SN down to very strict limits and the v…
Early afterglow detection in the Swift observations of GRB 050801
Massimiliano De Pasquale, S. R. Oates, M. J. Page +8
We present results of Swift optical, UV and X-ray observations of the afterglow of GRB 050801. The source is visible over the full optical, UV and X-ray energy range of the Swift U…
Dust and Gas in the Local Environments of Gamma-Ray Bursts
P. Schady, K. O. Mason, M. J. Page +6
Using a sample of gamma-ray burst (GRB) afterglows detected by both the X-Ray and the UV/Optical Telescopes (XRT and UVOT) on Swift, we modelled the spectral energy distributions (…