THE EFFICIENCY OF ELECTRON ACCELERATION IN COLLISIONLESS SHOCKS AND GAMMA-RAY BURST ENERGETICS
作者： Eli Waxman , David Eichler
DOI: 10.1086/430596
关键词:
摘要: Afterglow observations are commonly used to determine the parameters of GRB explosions, energy E, surrounding density n, postshock magnetic field equipartition fraction B, and electron e, under frequently made assumption that efficiency "injection" into relativistic shock acceleration is high, i.e., f electrons undergo ≈ 1. We show value cannot be determined by current observations, since currently testable model predictions for a parameter choice {E' = E/f, n' n/f, fB, fe} independent me/mp ≤ Current imply similar highly subrelativistic shocks plausibly suggest ~ 1, quite unlike situation in Crab Nebula. However, values 1 ruled out, implying factor uncertainty determination parameters. early, ≤10 hr, radio afterglow which will far more accessible Swift era, may provide constraints on f. Such therefore powerful diagnostic explosions physics particle collisionless shocks.
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T. J. Galama, R. A. M. J. Wijers, M. Bremer, P. J. Groot, R. G. Strom, C. Kouveliotou, J. van Paradijs, The Radio-to-X-Ray Spectrum of GRB 970508 on 1997 May 21.0 UT The Astrophysical Journal. ,vol. 500, ,(1998) , 10.1086/311425
Eli Waxman, Gamma-Ray Bursts: The Underlying Model Lecture Notes in Physics. ,vol. 598, pp. 393- 418 ,(2003) , 10.1007/3-540-45863-8_19
P. Ianna, O. R. Hainaut, N. Masetti, M. Kippen, M. Kippen, F. Frontera, T. Shigeyama, E. Sadler, P. A. Mazzali, H. Umeda, R. G. Strom, V. Doublier, L. Nicastro, J. van Paradijs, J. van Paradijs, T. R. Young, K. Hurley, F. Patat, B. Boyle, K. Nomoto, P. J. Groot, J. Greiner, C. Robinson, C. Robinson, J.-F. Gonzalez, C. Kouveliotou, C. Kouveliotou, C. Tinney, P. de Wildt, R. Cannon, K. Iwamoto, T. Augusteijn, R. A. M. J. Wijers, N. Tanvir, T. J. Galama, B. A. Peterson, J. Heise, J. P. Brewer, T. Nakamura, T. Suzuki, H. Böhnhardt, R. Stathakis, M. C. Begam, E. Pian, B. Leibundgut, C. Lidman, E. Costa, L. Piro, T. Koshut, M. Feroci, P. M. Vreeswijk, J. in't Zand, E. Palazzi, An Unusual Supernova in the Error Box of the Gamma-Ray Burst of 25 April 1998 Nature. ,vol. 395, pp. 670- 672 ,(1998) , 10.1038/27150
G. B. Taylor, D. A. Frail, E. Berger, S. R. Kulkarni, The Angular Size and Proper Motion of the Afterglow of GRB 030329 The Astrophysical Journal. ,vol. 609, ,(2004) , 10.1086/422554
Abraham Loeb, Mikhail V. Medvedev, Mikhail V. Medvedev, Generation of Magnetic Fields in the Relativistic Shock of Gamma-Ray Burst Sources The Astrophysical Journal. ,vol. 526, pp. 697- 706 ,(1999) , 10.1086/308038
J. Bednarz, M. Ostrowski, Energy Spectra of Cosmic Rays Accelerated at Ultrarelativistic Shock Waves Physical Review Letters. ,vol. 80, pp. 3911- 3914 ,(1998) , 10.1103/PHYSREVLETT.80.3911
R. D. Blandford, C. F. McKee, Fluid dynamics of relativistic blast waves Physics of Fluids. ,vol. 19, pp. 1130- 1138 ,(1976) , 10.1063/1.861619
Uri Keshet, Eli Waxman, Energy spectrum of particles accelerated in relativistic collisionless shocks. Physical Review Letters. ,vol. 94, pp. 111102- ,(2005) , 10.1103/PHYSREVLETT.94.111102
Eli Waxman, γ-Ray Burst Afterglow: Confirming the Cosmological Fireball Model The Astrophysical Journal. ,vol. 489, ,(1997) , 10.1086/310960
Jonathan Arons, Marco Tavani, Relativistic particle acceleration in plerions The Astrophysical Journal Supplement Series. ,vol. 90, pp. 797- ,(1994) , 10.1086/191905