2009A&A...508..593K


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.14CEST16:59:34

2009A&A...508..593K - Astronomy and Astrophysics, volume 508, 593-598 (2009/12-3)

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

KRUEHLER T., GREINER J., AFONSO P., BURLON D., CLEMENS C., FILGAS R., KANN D.A., KLOSE S., KUEPCUE YOLDAS A., McBREEN S., OLIVARES F., RAU A., ROSSI A., SCHULZE S., SZOKOLY G.P., UPDIKE A. and YOLDAS A.

Abstract (from CDS):

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. We construct an empirical light curve model using the available broadband data, which is well-sampled in the time and frequency domains. 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. At around 10 ks post-burst, there is an achromatic break from shallow to steeper decline in the afterglow light curve with a change in the power law index of Δα∼0.9. 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. A 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.

Abstract Copyright:

Journal keyword(s): gamma rays: bursts - techniques: photometric

VizieR on-line data: <Available at CDS (J/A+A/508/593): table1.dat table2.dat>

Simbad objects: 6

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Number of rows : 6

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 GRB 080710 gB 00 33 05.68 +19 30 05.8           ~ 106 0
2 GRB 080916C gB 07 59 23.24 -56 38 16.8           ~ 324 0
3 GRB 060418 gB 15 45 42.600 -03 38 20.00 15.73 16.19 14.98     ~ 329 0
4 GRB 060614 gB 21 23 32.140 -53 01 36.10 18.89 20.12 19.54     ~ 522 1
5 GRB 030723 gB 21 49 24.40 -27 42 47.4           ~ 120 0
6 GRB 060607 gB 21 58 50.400 -22 29 46.70 18.49 16.67 15.09     ~ 264 0

    Equat.    Gal    SGal    Ecl

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