artículo
The optical rebrightening of GRB100814A: an interplay of forward and reverse shocks?
Fecha
2015Registro en:
10.1093/mnras/stv267
1365-2966
0035-8711
WOS:000355345600074
Autor
De Pasquale, Massimiliano
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.
Kopac, 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.
Institución
Resumen
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.