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

De Pasquale, Massımılıano; 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.

doi:10.1093/mnras/stv267

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

Atıf İçin Kopyala

De Pasquale M., Kuin N. P. M., Oates S., SCHULZE S., CANO Z., GUIDORZI C., ...Daha Fazla

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, cilt.449, sa.1, ss.1024-1042, 2015 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 449 Sayı: 1
Basım Tarihi: 2015
Doi Numarası: 10.1093/mnras/stv267
Dergi Adı: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.1024-1042
İstanbul Üniversitesi Adresli: Hayır

Özet

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.