The Optical Rebrightening of GRB100814A: An Interplay of Forward and Reverse Shocks?
Document Type
Article
Publication Date
3-20-2015
Publication Title
Monthly Notices of the Royal Astronomical Society
Volume
449
Issue
1
First page number:
1024
Last page number:
1042
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.
Keywords
Radiation mechanism: non-thermal; Shock waves; Gamma-ray burst: general
Disciplines
Astrophysics and Astronomy
File Format
File Size
1010 KB
Repository Citation
De Pasquale, M.,
Kuin, N.,
Oates, S.,
Schulze, S.,
Cano, Z.,
Guidorzi, C.,
Beardmore, A.,
Evans, P.,
Uhm, Z.,
Zhang, B.,
Page, M.,
Kobayashi, S.,
Castro-Tirado, A.,
Gorosabel, J.,
Sakamoto, T.,
Fatkhullin, T.,
Pandey, S.,
Im, M.,
Chandra, P.,
Frail, D.,
Gao, H.,
Kopac, D.,
Jeon, Y.,
Akerlof, C.,
Huang, K.,
Pak, S.,
Park, W.,
Gomboc, A.,
Melandri, A.,
Zane, S.,
Mundell, C.,
Saxton, C.,
Holland, S.,
Virgili, F.,
Urata, Y.,
Steele, I.,
Bersier, D.,
Tanvir, N.,
Sokolov, V.,
Moskvitin, A.
(2015).
The Optical Rebrightening of GRB100814A: An Interplay of Forward and Reverse Shocks?.
Monthly Notices of the Royal Astronomical Society, 449(1),
1024-1042.
http://dx.doi.org/10.1093/mnras/stv267