The optical rebrightening of GRB100814A: An interplay of forward and reverse shocks?

DOI: 
10.1093/mnras/stv267
Publication date: 
01/05/2015
Main author: 
De Pasquale M.
IAA authors: 
Oates S.;Castro-Tirado A.;Gorosabel J.
Authors: 
De Pasquale M., Kuin N.P.M., Oates S., Schulze S., Cano Z., Guidorzi C., Beardmore A., Evans P.A., Uhm Z.L., Zhang B., Page M., Kobayashi S., Castro-Tirado A., Gorosabel J., Sakamoto T., Fatkhullin T., Pandey S.B., Im M., Chandra P., Frail D., Gao H., Kopač D., Jeon Y., Akerlof C., Huang K.Y., Pak S., Park W.-K., Gomboc A., Melandri A., Zane S., Mundell C.G., Saxton C.J., Holland S.T., Virgili F., Urata Y., Steele I., Bersier D., Tanvir N., Sokolov V.V., Moskvitin A.S.
Journal: 
Monthly Notices of the Royal Astronomical Society
Publication type: 
Article
Volume: 
449
Pages: 
1024-1042
Number: 
Abstract: 
We present a wide data set of gamma-ray, X-ray, UV/Opt/IR (UVOIR), and radio observations of the Swift GRB100814A. At the end of the slow decline phase of the X-ray and optical afterglow, this burst shows a sudden and prominent rebrightening in the optical band only, followed by a fast decay in both bands. The optical rebrightening also shows chromatic evolution. Such a puzzling behaviour cannot be explained by a single component model. We discuss other possible interpretations, and we find that a model that incorporates a long-lived reverse shock and forward shock fits the temporal and spectral properties of GRB100814 the best. © 2015 The Author.
Database: 
WOK
SCOPUS
ADS
URL: 
https://ui.adsabs.harvard.edu/#abs/2015MNRAS.449.1024D/abstract
ADS Bibcode: 
2015MNRAS.449.1024D
Keywords: 
Gamma-ray burst: general; Radiation mechanism: non-thermal; Shock waves