MNRAS-2015-De Pasquale-1024-42.pdf (1.03 MB)
Download fileThe optical rebrightening of GRB100814A: an interplay of forward and reverse shocks?
journal contribution
posted on 2015-05-07, 09:56 authored by Neil Tanvir, Massimiliano De Pasquale, N. P. M. Kuin, S. Oates, S. Schulze, Z. Cano, C. Guidorzi, A. Beardmore, P. A. Evans, Z. L. Uhm, B. Zhang, M. Page, S. Kobayashi, A. Castro-Tirado, J. Gorosabel, T. Sakamoto, T. Fatkhullin, S. B. Pandey, M. Im, P. Chandra, D. Frail, H. Gao, D. Kopaˇc, Y. Jeon, C. Akerlof, K. Y. Huang, S. Pak, W.-K. Park, A. Gomboc, A. Melandri, S. Zane, C. G. Mundell, C. J. Saxton, S. T. Holland, F. Virgili, Y. Urata, I. Steele, D. Bersier, N. Tanvir, V. V. Sokolov, A. S. MoskvitinWe present a wide dataset of γ-ray, X-ray, 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.
Funding
MDP, MJP, NPK and SRO acknowledge United Kingdom Space Agency (UKSA) funding. CGM thanks the Royal Society, the Wolfson Foundation and the Science and Technology Facilities Council (STFC) for support. FG acknowledges support from STFC. APB and PAE acknowledge UKSA support. This work made use of data supplied by the UK Swift Science Data Centre at the University of Leicester. AG acknowledges funding from the Slovenian Research Agency and from the Centre of Excellence for Space Sciences and Technologies SPACE-SI, an operation partly financed by the European Union, European Regional Development Fund and Republic of Slovenia”. MI, YJ, and S. Pak acknowledge the support from the Creative Initiative program, grant No. 2008-0060544 of the National Research Foundation of Korea (NRF), funded by the Korea government (MSIP). SS acknowledges financial support from support by a Grant of Excellence from the Icelandic and the Iniciativa Cientifica Milenio grant P10-064-F (Millennium Center for Supernova Science), with input from ”Fondo de Innovaci´on para la Competitividad, del Ministerio de Econom´ıa, Fomento y Turismo de Chile”, and Basal CATA (PFB-06/2007). The Liverpool Telescope is operated by Liverpool John Moores University at the Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. The Faulkes Telescopes, now owned by the Las Cumbres Observatory Global Telescope network, are operated with support from the Dill Faulkes Educational Trust.;MDP, MJP, NPK, and SRO acknowledge United Kingdom Space Agency (UKSA) funding. MDP thanks M. A. Aloy, F. Daigne, and A. Mizuta for insightful discussions at ‘Supernovae and GammaRay Burst 2013’ conference, Kyoto. CGM thanks the Royal Society, the Wolfson Foundation and the Science and Technology Facilities Council (STFC) for support. FG acknowledges support from STFC. APB and PAE acknowledge UKSA support. This work made use of data supplied by the UK Swift Science Data Centre at
History
Citation
Monthly Notices of the Royal Astronomical Society (May 1, 2015) 449 (1): 1024-1042.Author affiliation
/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Physics and AstronomyVersion
- VoR (Version of Record)
