Results 11 to 20 of about 878 (215)
Proton Acceleration with Relativistic Electromagnetic Shock. [PDF]
Adv Sci (Weinh)New Ion Acceleration Mechanism! A novel cosmic‐ray proton acceleration mechanism is proposed, where relativistic electromagnetic shocks accelerate protons transversely. Hamiltonian analysis yields a scaling law linking the proton energy to the minimum longitudinal thickness of the shock.
Xiao T +5 more
europepmc +2 more sources
Modeling Pulsar Wind Nebulae [PDF]
Advances in Space Research, 2007 22 pages, 7 figures, Proceedings of the 2006 COSPAR Meeting in Beijing, accepted for publication in ...
N. Bucciantini
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The Theory of Pulsar Winds and Nebulae [PDF]
, 2009 We review current theoretical ideas on pulsar winds and their surrounding nebulae. Relativistic MHD models of the wind of the aligned rotator, and of the striped wind, together with models of magnetic dissipation are discussed. It is shown that the observational signature of this dissipation is likely to be point-like, rather than extended, and that ...
J. G. Kirk, Yuri Lyubarsky, J. Pétri
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Time-dependent modelling of pulsar wind nebulae [PDF]
The Astrophysical Journal, 2013 A spatially independent model that calculates the time evolution of the electron spectrum in a spherically expanding pulsar wind nebula (PWN) is presented, allowing one to make broadband predictions for the PWN's non-thermal radiation. The source spectrum of electrons injected at the termination shock of the PWN is chosen to be a broken power law.
M. Vorster +3 more
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PARTICLE TRANSPORT IN YOUNG PULSAR WIND NEBULAE [PDF]
The Astrophysical Journal, 2012 13 pages, ApJ, in press, corrected ...
Xiaping Tang, Roger A. Chevalier
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GEMINGA’S PUZZLING PULSAR WIND NEBULA [PDF]
The Astrophysical Journal, 2017 ABSTRACT We report on six new Chandra observations of the Geminga pulsar wind nebula (PWN). The PWN consists of three distinct elongated structures—two ≈ 0.2 d
B. Posselt +8 more
openaire +5 more sources
, 2016 Author version of chapter for 'Handbook of Supernovae,' edited by A. Alsabti and P. Murdin, Springer.
Oleg Kargaltsev +3 more
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Why (Still) Studying Turbulence in Fluids and Plasmas?
Perspectives of Earth and Space Scientists, Volume 4, Issue 1, December 2023., 2023 Abstract Turbulence, a captivating and intricate phenomenon, continues to attract researchers across diverse scientific disciplines. Despite considerable efforts, turbulence remains a fascinating challenge and stands as one of the unsolved enigmas in classical physics.
Tommaso Alberti +2 more
wiley +1 more source
Journal of Geophysical Research: Space Physics, Volume 128, Issue 2, February 2023., 2023 Abstract We present long‐term density trends of the Earth's upper atmosphere at altitudes between 71 and 116 km, based on atmospheric occultations of the Crab Nebula observed with X‐ray astronomy satellites, ASCA, RXTE, Suzaku, NuSTAR, and Hitomi. The combination of the five satellites provides a time period of 28 years from 1994 to 2022.
Satoru Katsuda +11 more
wiley +1 more source
A search for runaway stars in 12 Galactic supernova remnants
Astronomische Nachrichten, Volume 342, Issue 3, Page 553-577, March 2021., 2021 Runaway stars can result from core‐collapse supernovae in multiple stellar systems. If the supernova disrupts the system, the companion is ejected with its former orbital velocity. A clear identification of a runaway star can yield the time and place of the explosion, as well as orbital parameters of the pre‐supernova binary system.
Oliver Lux +3 more
wiley +1 more source