Results 51 to 60 of about 1,204 (229)

Magnetogenesis in a Collisionless Plasma: From Weibel Instability to Turbulent Dynamo

The Astrophysical Journal, 2023
We report on a first-principles numerical and theoretical study of plasma dynamo in a fully kinetic framework. By applying an external mechanical force to an initially unmagnetized plasma, we develop a self-consistent treatment of the generation of “seed”
Muni Zhou, Vladimir Zhdankin, Matthew W. Kunz, Nuno F. Loureiro, Dmitri A. Uzdensky   +4 more
doaj   +1 more source

Influence of structured extragalactic magnetic fields on the propagation of UHECRs

, 2005
The origin of the highest energy cosmic rays (UHECRs, E ≥ $10^19$ eV) remains a mystery. The Pierre Auger experiment will collect an unprecendented statistics at those energies, and therefore allow to detect potential sources. We discuss the influence of extragalactic magnetic fields, which are still poorly known, on the propagation of UHECRs and ...
Armengaud, E.
openaire   +2 more sources

Extragalactic Magnetic Field and the Highest Energy Cosmic Rays [PDF]

The Astrophysical Journal, 1995
11 pages with 3 postscript figures; LaTeX with AASTeX macros; uuencoded 3 .eps figures; submitted to the ApJL; a postscript version of the paper also available at http://astro.uchicago.edu/home/web/sjlee/pub ...
Sangjin Lee, Angela V. Olinto, Günter Sigl   +2 more
openalex   +3 more sources

Constraints on the Intergalactic Magnetic Field Using Fermi-LAT and H.E.S.S. Blazar Observations

The Astrophysical Journal Letters, 2023
Magnetic fields in galaxies and galaxy clusters are believed to be the result of the amplification of intergalactic seed fields during the formation of large-scale structures in the universe.
F. Aharonian, J. Aschersleben, M. Backes, V. Barbosa Martins, R. Batzofin, Y. Becherini, D. Berge, B. Bi, M. Bouyahiaoui, M. Breuhaus, R. Brose, F. Brun, B. Bruno, T. Bulik, C. Burger-Scheidlin, T. Bylund, S. Caroff, S. Casanova, J. Celic, M. Cerruti, T. Chand, S. Chandra, A. Chen, J. Chibueze, O. Chibueze, G. Cotter, M. de Bony, K. Egberts, J.-P. Ernenwein, G. Fichet de Clairfontaine, M. Filipovic, G. Fontaine, M. Füssling, S. Funk, S. Gabici, S. Ghafourizadeh, G. Giavitto, D. Glawion, J. F. Glicenstein, P. Goswami, M.-H. Grondin, L. Haerer, T. L. Holch, M. Holler, D. Horns, M. Jamrozy, F. Jankowsky, V. Joshi, I. Jung-Richardt, E. Kasai, K. Katarzyński, R. Khatoon, B. Khélifi, W. Kluźniak, Nu. Komin, K. Kosack, D. Kostunin, R. G. Lang, S. Le Stum, F. Leitl, A. Lemière, J.-P. Lenain, F. Leuschner, T. Lohse, A. Luashvili, I. Lypova, J. Mackey, D. Malyshev, D. Malyshev, V. Marandon, P. Marchegiani, A. Marcowith, G. Martí-Devesa, R. Marx, M. Meyer, A. Mitchell, R. Moderski, L. Mohrmann, A. Montanari, E. Moulin, J. Muller, T. Murach, K. Nakashima, J. Niemiec, S. Ohm, L. Olivera-Nieto, E. de Ona Wilhelmi, S. Panny, M. Panter, R. D. Parsons, G. Peron, D. A. Prokhorov, H. Prokoph, G. Pühlhofer, M. Punch, A. Quirrenbach, P. Reichherzer, A. Reimer, O. Reimer, B. Reville, F. Rieger, G. Rowell, B. Rudak, E. Ruiz-Velasco, V. Sahakian, D. A. Sanchez, M. Sasaki, F. Schüssler, H. M. Schutte, U. Schwanke, J. N. S. Shapopi, H. Sol, S. Spencer, S. Steinmassl, H. Suzuki, T. Takahashi, T. Tanaka, A. M. Taylor, R. Terrier, C. Thorpe-Morgan, M. Tsirou, N. Tsuji, Y. Uchiyama, C. van Eldik, J. Veh, C. Venter, S. J. Wagner, R. White, A. Wierzcholska, Yu Wun Wong, M. Zacharias, D. Zargaryan, A. A. Zdziarski, S. Zouari, N. Żywucka, H.E.S.S. Collaboration, M. Meyer, Fermi-LAT Collaboration   +137 more
doaj   +1 more source

CRPropa 2.0

EPJ Web of Conferences, 2013
Recently CRPropa 2.0 has been released as a public software package to simulate the extragalactic propagation of ultra-high energy nuclei. It includes deflections by extragalactic magnetic fields and all relevant interactions with ambient photon ...
Nierstenhoefer Nils, Schiffer Peter, Maccione Luca, Kulbartz Jörg, Kampert Karl-Heinz, van Vliet Arjen, Sigl Günter   +6 more
doaj   +1 more source

Fast Radio Bursts as Probes of Magnetic Fields in Galaxies at z < 0.5

The Astrophysical Journal, 2023
We present a sample of nine fast radio bursts (FRBs) from which we derive magnetic field strengths of the host galaxies represented by normal, z < 0.5 star-forming galaxies with stellar masses M _* ≈ 10 ^8 –10 ^10.5 M _⊙ .
Alexandra G. Mannings, Rüdiger Pakmor, J. Xavier Prochaska, Freeke van de Voort, Sunil Simha, R. M. Shannon, Nicolas Tejos, Adam Deller, Marc Rafelski   +8 more
doaj   +1 more source

On irregularities in the cosmic ray spectrum of \(10^{16}-10^{18}\) eV range

SciPost Physics Proceedings, 2023
Existing small, medium and large arrays for the study of cosmic rays of ultra-high energies are aimed for obtaining information about our galaxy and extragalactic space, namely to search and study astronomical objects that produce the flux of ...
Stanislav P. Knurenko, Igor S. Petrov
doaj   +1 more source

Turbulence in the interstellar medium [PDF]

, 2014
Turbulence is ubiquitous in the insterstellar medium and plays a major role in several processes such as the formation of dense structures and stars, the stability of molecular clouds, the amplification of magnetic fields, and the re-acceleration and ...
Chian, A. C. -L., Chian, A. C.-L., G. Kowal, Falgarone, E., E. Falgarone, Falceta-Goncalves, D., Kowal, G., Chian, A., A. C.-L. Chian, D. Falceta-Gonçalves   +9 more
core   +1 more source

Sensitivity of Cross-Correlation Studies by Using X_max Information

Galaxies, 2022
The investigation about cosmic-ray sources through the study of the arrival direction of the particles is completely dependent on primary mass compositions.
Cynthia V. Ventura, Rogerio M. de Almeida, Rita C. Dos Anjos, Jaziel G. Coelho   +3 more
doaj   +1 more source

CRPropa high statistics simulations for UHECR anisotropy studies [PDF]

EPJ Web of Conferences, 2023
Despite the great progress made by modern cosmic ray observatories, the origin and acceleration mechanism of ultra-high-energy cosmic rays (UHECRs) remains unsolved problems to this day.
Rossoni Simone, Sigl Günter
doaj   +1 more source