Výsledky vyhledávání - "Allard Jan van Marle"

PeV Cosmic Ray Acceleration in the Supernova Post Breakout Expansion Phase: Kinetic-magnetohydrodynamic Simulations

Autor: Tsuyoshi Inoue, Shogo Nishino, Gwenael Giacinti, Allard Jan van Marle, Alexandre Marcowith

Publikováno v: Proceedings of Science
PoS
37th International Cosmic Ray Conference
37th International Cosmic Ray Conference, Jul 2021, Berlin, Germany. pp.158, ⟨10.22323/1.395.0158⟩

International audience; Origin of cosmic rays (CRs) is still not known. In this work we argue that PeV cosmic rays can be accelerated during the early phase of a supernova blast wave expansion in dense red supergiant winds. We solve in spherical geom

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c493930fa4b55aa7619bcaedb94fc41d
https://doi.org/10.22323/1.395.0158

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Using PIC and PIC-MHD to investigate the occurrence of Fermi-1 acceleration in astrophysical shocks

Autor: Allard Jan van Marle, Artem Bohdan, Alexandre Marcowith, Martin Pohl, Paul Morris

Publikováno v: Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021).

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4f841afdcad4b2f936333a2e4ed0fd55
https://doi.org/10.22323/1.395.0447

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On the influence of supra-thermal particle acceleration on the morphology of low-Mach, high-$\beta$ shocks

Autor: Allard Jan van Marle

Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, 496 (3), pp.3198-3208. ⟨10.1093/mnras/staa1771⟩

When two galaxy clusters encounter each other, the interaction results in a collisionless shock that is characterized by a low (1-4) sonic Mach number, and a high Alfv{\'e}nic Mach number. Our goal is to determine if, and to what extent, such shocks

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16b907d849687a371d57daf78d908cbb
http://arxiv.org/abs/2006.09805

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Using PIC-MHD to model the interaction between an electron-positron beam and a thermal plasma

Autor: Allard Jan van Marle, Alexandre Marcowith, Illya Plotnikov, Claire Guepin

Publikováno v: Journal of Physics: Conference Series. 2156:012090

The origin of the gamma-ray halo around pulsars is associated with the reduced diffusivity of energetic particles responsible for gamma-ray emission with respect to the mean-free path they adopt in the interstellar medium. A possible explanation for

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fdd964f0f302c9bf7d91d061c3148d6a
https://doi.org/10.1088/1742-6596/2156/1/012090

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Direct Numerical Simulations of Cosmic-ray Acceleration at Dense Circumstellar Medium: Magnetic-field Amplification and Maximum Energy

Autor: Tsuyoshi Inoue, Gwenael Giacinti, Shogo Nishino, Allard Jan van Marle, A. Marcowith

Publikováno v: Astrophys.J.
Astrophys.J., 2021, 922 (1), pp.7. ⟨10.3847/1538-4357/ac21ce⟩

Galactic cosmic rays are believed to be accelerated at supernova remnants. However, whether supernova remnants can be PeV is still very unclear. In this work we argue that PeV cosmic rays can be accelerated during the early phase of a supernova blast

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fff1f34be7d842e989ae1c22598e94d1
https://doi.org/10.3847/1538-4357/ac21ce

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Three-dimensional simulations of non-resonant streaming instability and particle acceleration near non-relativistic astrophysical shocks

Autor: Allard Jan van Marle, Fabien Casse, Alexandre Marcowith

Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 2019, 490 (1), pp.1156-1165. ⟨10.1093/mnras/stz2624⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2019, 490 (1), pp.1156-1165. ⟨10.1093/mnras/stz2624⟩
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2019, 490 (1), pp.1156-1165. ⟨10.1093/mnras/stz2624⟩

We use particle-in-magnetohydrodynamics-cells to model particle acceleration and magnetic field amplification in a high Mach, parallel shock in three dimensions and compare the result to 2-D models. This allows us to determine whether 2-D simulations

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3ab5b3ac88969c5bd28f812b57c4257

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Diffusive shock acceleration of cosmic rays in low-Mach galaxy cluster shocks

Autor: Allard Jan van Marle

Publikováno v: Journal of Physics: Conference Series. 1468:012093

Astrophysical shocks are known to accelerate particles to high relativistic velocities. This process requires the particles to repeatedly cross the shock, a process that can only occur if the particle is reflected by the local magnetic field. Such pa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::084465b0fd7d1e77cef3c3e1a3073aae
https://doi.org/10.1088/1742-6596/1468/1/012093

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On magnetic field amplification and particle acceleration near non-relativistic astrophysical shocks: particles in MHD cells simulations

Autor: Alexandre Marcowith, F. Casse, Allard Jan van Marle

Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 2018, 473 (3), pp.3394-3409. ⟨10.1093/mnras/stx2509⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2018, 473 (3), pp.3394-3409. ⟨10.1093/mnras/stx2509⟩
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2018, 473 (3), pp.3394-3409. ⟨10.1093/mnras/stx2509⟩
Mon.Not.Roy.Astron.Soc., 2018, 473 (3), pp.3394-3409. 〈10.1093/mnras/stx2509〉

We present simulations of magnetized astrophysical shocks taking into account the interplay between the thermal plasma of the shock and supra-thermal particles. Such interaction is depicted by combining a grid-based magneto-hydrodynamics description

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d939c0f896e7e3bbcf3e0e341f546e97
https://hal.science/hal-01645791/document

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Using a combined PIC-MHD code to simulate particle acceleration in astrophysical shocks

Autor: Allard Jan van Marle, Fabien Casse, Alexandre Marcowith

Publikováno v: PoS
35th International Cosmic Ray Conference
35th International Cosmic Ray Conference, Jul 2017, Busan, South Korea. pp.569, ⟨10.22323/1.301.0569⟩

International audience; In order to model the magnetic field amplification and particle acceleration that takes place in astrophysical shocks, we need a code that can efficiently model the large-scale structure of the shock, while still taking the ki

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41e3e5981a25613af9c13759858ad92e
https://hal.archives-ouvertes.fr/hal-01890912

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