The bright optical/NIR afterglow of the faint GRB 080710 - Evidence for a jet viewed off axis

Abstract

We investigate the optical/near-infrared light curve of the afterglow of GRB 080710 in the context of rising afterglows. Optical and near-infrared photometry was performed using the seven channel imager GROND and the Tautenburg Schmidt telescope. X-ray data were provided by the X-ray Telescope onboard the Swift satellite. The optical/NIR light curve of the afterglow of GRB 080710 is dominated by an initial increase in brightness, which smoothly turns over into a shallow power law decay. The initially rising achromatic light curve of the afterglow of GRB 080710 can be accounted for with a model of a burst viewed off-axis or a single jet in its pre deceleration phase and in an on-axis geometry. An unified picture of the afterglow light curve and prompt emission properties can be obtained with an off-axis geometry, suggesting that late and shallow rising optical light curves of GRB afterglows might be produced by geometric effects.

9 pages, 4 figures, accepted by A and A

References in corpus (17)

• An online repository of Swift/XRT light curves of GRBs
• Gamma-Ray Bursts: Progress, Problems & Prospects
• An enigmatic long-lasting gamma-ray burst not accompanied by a bright supernova
• GROND - a 7-channel imager
• Low-Resolution Spectroscopy of Gamma-ray Burst Optical Afterglows: Biases in the Swift Sample and Characterization of the Absorbers
• REM observations of GRB 060418 and GRB 060607A: the onset of the afterglow and the initial fireball Lorentz factor determination
• A Comprehensive Analysis of Swift/XRT Data: III. Jet Break Candidates in X-ray and Optical Afterglow Lightcurves
• A statistical study of gamma-ray burst afterglows measured by the Swift Ultra-violet Optical Telescope
• The redshift and afterglow of the extremely energetic gamma-ray burst GRB 080916C
• Looking Into the Fireball: ROTSE-III and Swift Observations of Early GRB Afterglows
• Taxonomy of GRB optical light-curves: identification of a salient class of early afterglows
• Global Properties of X-Ray Flashes and X-Ray-Rich Gamma-Ray Bursts Observed by Swift
• Early optical observations of GRBs by the TAROT telescopes: period 2001-2008
• The bright optical/NIR afterglow of the faint GRB 080710 - Evidence for a jet viewed off axis
• Rise and fall of the X-ray flash 080330: an off-axis jet?
• The complex light-curve of the afterglow of GRB071010A
• GRB 060605: multi-wavelength analysis of the first GRB observed using integral field spectroscopy

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