Speaker
Description
See the full abstract here http://ocs.ciemat.es/EPS2019ABS/pdf/I2.J502.pdf
Powerful gamma-ray emissions are ubiquitous in astrophysics, from active galactic nuclei [1] to pulsars [2] and neutron star mergers [3]. One of the key mechanisms leading to powerful gamma-ray emissions is thought to be the interaction of ultrarelativistic particle beams with a surrounding plasma environment, which was experimentally shown to lead to the formation of filaments [4] with the self-generation of ~ 10^4 gauss and long-lived magnetic fields [5]. Here we show that the filamentation of a high-density and ultrarelativistic electron beam in a high-density plasma background leads to the generation of 10^7-10^8 gauss magnetic fields with the emission of a very bright and collimated gamma-ray flash [6]. In addition to their intrinsic interest, these findings pave the way to new routes for reproducing astrophysical phenomena in the laboratory [7], and to novel investigations in strong-field QED and nuclear physics such as the interaction between real photons in vacuum [8].
References
[1] M. C. Begelman, R. D. Blandford, and M. J. Rees, Rev. Mod. Phys. 56, 255 (1984)
[2] P. A. Caraveo, Annu. Rev. Astron. Astrophys. 52, 211 (2014)
[3] B. P. Abbott, R. Abbott, T. D. Abbott et al., Astrophys. J. Lett. 848, L13 (2017)
[4] B. Allen, V. Yakimenko, M. Babzien et al., Phys. Rev. Lett. 109, 185007 (2012)
[5] J. Warwick, T. Dzelzainis, M. E. Dieckmann et al., Phys. Rev. Lett. 119, 185002 (2017)
[6] A. Benedetti, M. Tamburini, and C. H. Keitel, Nat. Photon. 12, 319 (2018)
[7] S. V. Bulanov, T. Zh. Esirkepov, M. Kando et al., Plasma Phys. Rep. 41, 1 (2015)
[8] A. Di Piazza, C. M¸ller, K. Z. Hatsagortsyan, and C. H. Keitel, Rev. Mod. Phys. 84, 1177 (2012)
