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Similarities: GRB 940217, GBR 090926A and GRB980923

Published online by Cambridge University Press:  22 July 2013

J.R. Sacahui ,
M.M. González ,
N. Fraija ,
J.L. Ramirez  and
W.H. Lee
J.R. Sacahui
Affiliation:
Instituto de Astronomía, UNAM, 04510, México;. e-mail: [email protected]; [email protected]; [email protected]; [email protected]; [email protected]
M.M. González
Affiliation:
Instituto de Astronomía, UNAM, 04510, México;. e-mail: [email protected]; [email protected]; [email protected]; [email protected]; [email protected]
N. Fraija
Affiliation:
Instituto de Astronomía, UNAM, 04510, México;. e-mail: [email protected]; [email protected]; [email protected]; [email protected]; [email protected]
J.L. Ramirez
Affiliation:
Instituto de Astronomía, UNAM, 04510, México;. e-mail: [email protected]; [email protected]; [email protected]; [email protected]; [email protected]
W.H. Lee
Affiliation:
Instituto de Astronomía, UNAM, 04510, México;. e-mail: [email protected]; [email protected]; [email protected]; [email protected]; [email protected]
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Abstract

Few GRBs clearly present distinct High-Energy (HE) component that evolve independent ofthe usual Band function that describes the prompt keV-emission. This component can be longor short lasting compared to the burst duration. However, most of models only explain thelong duration HE component. We have developed a leptonic model on the external shockframework to describe the HE components. We propose that the short HE component that fallsin the MeV regime in coincidence with the prompt phase and, the second long lastingGeV-emission could be understood as synchrotron self-Compton (SSC) emission from thereverse and forward shock respectively. This model requires a magnetized jet and a reverseshock in the thick shell case. This model already has been proven in GRB 980923 and GRB090926A, the former with a short duration MeV-component and the latter with both long GeV-and short MeV- HE components. All fluxes, energies and durations are consistent with theobserved values. Here, we apply this model to GRB 940217 that presented similarities withGRB 090926A and GRB 980923.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 61: Gamma-ray Bursts: 15 Years of GRB Afterglows – Progenitors, Environments and Host Galaxies from the Nearby to the Early Universe , 2013 , pp. 301 - 305
Copyright
© EAS, EDP Sciences 2013

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References

Ackerman, M., Ajello, M., Asano, K., et al., 2009, ApJ, 729, 114
Asano, K., Guiriec, S., & Meszaros, P., 2009, ApJ, 705, L191 CrossRef
Dermer, C.D., & Razzaque, S., 2010, ApJ, 724, 1366 CrossRef
Fraija, N., Gonzalez, M.M., & Lee, W.H., 2012, ApJ, 751, 33 CrossRef
Fraija, N., Gonzalez, M.M., & Lee, W.H., 2012 [arXiv:1110.6421]
Fraija, N., Gonzalez, M.M., Sacahui, J.R., & W.H. Lee, 2012, PoS GRB 2012, 27
Fraija, N., Gonzalez, M.M., Sacahui, J.R., et al., 2013, in preparation
González, M.M., Sacahui, J.R., Ramirez, J.R., et al., 2012, ApJ, 755, 140 CrossRef
Hurley, K., Dingus, B.L., Mukherjee, R., et al., 1994, Nature, 372, 652 CrossRef
Lamb, D.Q., Donaghy, T.Q., & Graziani, C., 2005, ApJ, 620, 355 CrossRef
Panaitescu, A., & Meszaros, P., 2000, ApJ, 544, L17 CrossRef
Papathanassiou, H., & Meszaros, P., 1996, ApJ, 471, L91 CrossRef
Sacahui, J.R., Fraija, N., Gonzalez, M.M., et al., 2012, ApJ, 755, 127 CrossRef
Sari, R., Narayan, R., & Piran, T., 1996, ApJ, 473, 204 CrossRef
Sari, R., & Esin, A.A., 2001, ApJ, 548, 787 CrossRef
Wang, X.Y., Dai, Z.G., & Lu, T., 2001, ApJ, 546, L33 CrossRef
Winkler, C., Bennett, K., Hanlon, L.O., et al., 1994, Ap&SS, 231, 153