Exploring the interaction between ultra-relativistic fireball beams and magnetized plasmas
POSTER
Abstract
Ultra-relativistic particle jets composed of electrons and positrons are common in astrophysical environments and are associated with some of the most luminous astrophysical objects, such as gamma-ray bursts, supernova explosions and active galactic nuclei [1]. The interaction of these jets with the surrounding media drives a variety of plasma phenomena including the generation of intense magnetic fields and particle acceleration.
In this work, we investigate via multidimensional numerical simulations performed with the Particle-In-Cell code OSIRIS [2] the interaction between a neutral ultra-relativistic electron-positron beam and a magnetized plasma. Different degrees of magnetization are considered and their impact on the development of plasma micro instabilities is studied. The effect of the beam speed, temperature and size is also examined in order to envisage possible scenarios where the physics of the interaction could be probed in the laboratory, similarly to what is done for an unmagnetized plasma in Shukla et al. [3].
[1] Piran, Rev. Mod. Phys. 76, 1143 (2005). Medvedev et al., Astrophys. J. Lett. 618, L75 (2005).
[2] Fonseca et al. Plasma Phys. Control. Fusion 50, 124034 (2008).
[3] Shukla et al., J. Plasma Phys. 84, 3 (2018).
In this work, we investigate via multidimensional numerical simulations performed with the Particle-In-Cell code OSIRIS [2] the interaction between a neutral ultra-relativistic electron-positron beam and a magnetized plasma. Different degrees of magnetization are considered and their impact on the development of plasma micro instabilities is studied. The effect of the beam speed, temperature and size is also examined in order to envisage possible scenarios where the physics of the interaction could be probed in the laboratory, similarly to what is done for an unmagnetized plasma in Shukla et al. [3].
[1] Piran, Rev. Mod. Phys. 76, 1143 (2005). Medvedev et al., Astrophys. J. Lett. 618, L75 (2005).
[2] Fonseca et al. Plasma Phys. Control. Fusion 50, 124034 (2008).
[3] Shukla et al., J. Plasma Phys. 84, 3 (2018).
Presenters
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Cinzia Chiappetta
Physics Department, Lancaster University, Lancaster (UK)
Authors
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Cinzia Chiappetta
Physics Department, Lancaster University, Lancaster (UK)
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James Gold
Physics Department, Lancaster University, Lancaster (UK)
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Mariaelena Innocenti
Department of Physics and Astronomy, Ruhr-Universität Bochum, Bochum (Germany
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Nitin Shukla
SCAI, CINECA, Casalecchio di Reno (Italy)
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Kevin M. Schoeffler
IST, University of Lisbon, Portugal, GoLP/IPFN, Instituto Superior Técnico, Universidade de Lisboa, Lisbon (Portugal)
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Elisabetta Boella
Lancaster Univ, Lancaster University, Physics Department, Lancaster University, Bailrigg, UK, Physics Department, Lancaster University, Lancaster (UK)