RT Journal Article
T1 GRB 021004 modelled by multiple energy injections
A1 Ugarte Postigo, A. de
A1 Castro Tirado, A. J.
A1 Gorosabel, J.
A1 Jóhannesson, G.
A1 Björnsson, G.
A1 Gudmundsson, E. H.
A1 Bremer, M.
A1 Pak, S.
A1 Tanvir, N.
A1 Castro Cerón, J. M.
A1 Guzyi, S.
A1 Jelínek, M.
A1 Klose, S.
A1 Pérez Ramírez, D.
A1 Aceituno, J.
A1 Campo Bagatín, A.
A1 Covino, S.
A1 Cardiel López, Nicolás
AB GRB 021004 is one of the best sampled gamma-ray bursts (GRB) to date, although the nature of its light curve is still being debated. Here we present 107 new optical, near-infrared (NIR) and millimetre observations, ranging from 2 h to more than a year after the burst. Fitting the multiband data to a model based on multiple energy injections suggests that at least 7 refreshed shocks took place during the evolution of the afterglow, implying a total energy release ( collimated within an angle of 1.degrees 8) of similar to 8 x 10(51) erg. Analysis of the late photometry reveals that the GRB 021004 host is a low extinction (A(V) similar to 0.1) starburst galaxy with M-B similar or equal to -22.0.
PB EDP Sciencies
SN 0004-6361
YR 2005
FD 2005-12
LK https://hdl.handle.net/20.500.14352/51333
UL https://hdl.handle.net/20.500.14352/51333
LA eng
NO Berger, E., Frail, D. A., & Kulkarni, S. R. 2002, GCN Circ., 1613 Bersier, D., Stanek, K. Z., Winn, J. N., et al. 2003, ApJ, 584, L43 Björnsson, G., Gudmundsson, E. H., & Jóhannesson, G. 2004, ApJ, 615, L77 Blandford, R. D., & McKee, C. F. 1976, PhFl, 19, 1130 Bolzonella, M., Miralles, J.-M., & Pelló, R. 2000, A&A, 363, 476 Castro Tirado, A. J., Gorosabel, J., Guziy, S., et al. 2003, A&A, 411, L315 Castro Tirado, A. J., Møller, P., García Segura, G., et al. 2005, in preparation Christensen, L., Hjorth, J., & Gorosabel, J. 2004, A&A, 425, 913 Fox, D. W. 2002, GCN, 1564 Fox, D. W., Yost, S., Kulkarni, S. R., et al. 2003, Nature, 422, 284 Frail, D. A., & Berger, E. 2002, GCN Circ., 1574 Fukugita, M., Shimasaku, K., & Ichikawa, T. 1995, PASP, 107, 945 Fynbo, J. P. U., Jensen, B. L., Dall, T. H., et al. 2001, A&A, 373, 796 Fynbo, J. P. U., Gorosabel, J., Smette, A., et al. 2005, ApJ, in press Ghisellini, G., & Lazzati, D. 1999, MNRAS 309, L7 Granot, J., Piran, T., & Sari, R. 1999, ApJ, 513, 679 Granot, J., & Sari, R. 2002, ApJ, 568, 820 Guilloteau S., Delannoy, J., Downes, D., et al. 1992, A&A, 262, 624 Jensen, B. L., Fynbo, J. P. U., Gorosabel, J., et al. 2001, A&A, 370, 909 Jóhannesson, G., et al. 2005, ApJ, in preparation Harrison, F. A., Yost, S. A., Sari, R., et al. 2001, ApJ, 559, 123 Henden, A. A. 2002, GCN Circ., 1583 Heyl, J. S., & Perna, R. 2003, ApJ, 586, 13 Holland, S. T., Weidinger, M., Fynbo, J. P. U., et al. 2003, AJ, 125, 2291 Lazzati, D., Rossi, E., Covino, S., Ghisellini, G., & Malesani, D. 2002, A&A, 396, L5 Madau, P. 1995, ApJ, 441, 18 Miller, G. E., & Scalo, J. M. 1979, ApJS, 41, 513 Mirabal N., Halpern, J. P., Chornock, R., et al. 2003, ApJ, 595, 935 Nakar, E., Piran, T. & Granot, J. 2003, NewA, 8, 495 Pak, S. et al. 2005, A&A, in preparation Pandey, S. B., Sahu, D. K., Resmi, L., et al. 2003, BASI, 31, 19 Pei, Y. C. 1992, ApJ, 395, 130 Piran, T. 2005, Rev. Mod. Phys., 76, 1143 Persson, S. E., Murphy, D. C., Krzeminski, W., et al. 1998, AJ, 116, 2475 Prévot, M. L., Lequeux, J., Prévot, L., Maurice, E., & Rocca-Volmerange, B. 1984, A&A, 132, 389 Rhoads, J. E. 1999, ApJ, 525, 737 Sako, M., & Harrison, F. A. 2002a, GCN Circ, 1624 Sako, M., & Harrison, F. A. 2002b, GCN Circ, 1716 Schaefer, B. E., Gerardy, C. L., Höflich, P., et al. 2003, ApJ 588, 387 Schlegel, D. J., Finkbeiner, D. P., & Davis, M. 1998, ApJ, 500, 525 Uemura, M.,Kato, T., Ishioka, R., et al. 2003, PASJ, 55, L31 de Ugarte Postigo, A., Jelínek, M., Gorosabel, J., et al. 2005, Proc. of the I Reunión Nacional de Astrofísica Robótica, Mazagón (Spain), in press in’ t Zand, J. J. M., Kuiper, L., Amati, L., et al. 2001, ApJ, 559, 710
NO © ESO 2005. Artículo firmado por 46 autores. We acknowledge the generous allocation of observing time by different Time Allocation Committees at several observatories spread world-wide. Partly based on observations carried out with the IRAM Plateau de Bure Interferometer. IRAM is supported by INSU/CNRS (France), MPG (Germany) and ING (Spain). This research has been partially supported by the Spain’s Ministerio de Ciencia y Tecnología under programmes ESP2002-04124-C03-01 and AYA2004-01515 (including FEDER funds). A. de Ugarte Postigo acknowledges support from a FPU grant from Spain’s Ministerio de Educación y Ciencia. G. Jóhannesson, G. Björnsson and E. H. Gudmundsson acknowledge support from a special grant from the Icelandic Research Council. V. V. Sokolov and T. A. Fatkhullin were supported by Russian Foundation for Basic Research, grant No. 01- 02-17106. We acknowledge our anonymous referee for constructive comments.
NO INSU/CNRS (France)
NO Spain’s Ministerio de Ciencia y Tecnología
NO FPU grant from Spain’s Ministerio de Educación y Ciencia
NO Icelandic Research Council
NO Russian Foundation for Basic Research
NO FEDER funds
DS Docta Complutense
RD 28 abr 2024