Search Results - "Bell, A. R."

Turbulent amplification of magnetic field and diffusive shock acceleration of cosmic rays by Bell, A. R.

“…ABSTRACT The diffusive shock acceleration of cosmic rays by supernova remnants depends upon the generation of magnetic fluctuations by cosmic rays upstream of…”
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Cosmic-ray acceleration and escape from supernova remnants by Bell, A. R., Schure, K. M., Reville, B., Giacinti, G.

“…Galactic cosmic-ray (CR) acceleration to the knee in the spectrum at a few PeV is only possible if the magnetic field ahead of a supernova remnant (SNR) shock…”
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Cosmic ray origins in supernova blast waves by Bell, A R

“…We extend the self-similar solution derived by Chevalier for a Sedov blast wave accelerating cosmic rays (CR) to show that the Galactic CR population can be…”
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Cosmic ray acceleration by shocks: spectral steepening due to turbulent magnetic field amplification by Bell, A R, Matthews, J H, Blundell, K M

“…Abstract We show that the energy required to turbulently amplify magnetic field during cosmic ray (CR) acceleration by shocks extracts energy from the CR and…”
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Ultrahigh energy cosmic rays from shocks in the lobes of powerful radio galaxies by Matthews, J H, Bell, A R, Blundell, K M, Araudo, A T

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Quantum radiation reaction in laser-electron-beam collisions by Blackburn, T G, Ridgers, C P, Kirk, J G, Bell, A R

“…It is possible using current high-intensity laser facilities to reach the quantum radiation reaction regime for energetic electrons. An experiment using a…”
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Resistive Magnetic Field Generation at Cosmic Dawn by Miniati, Francesco, Bell, A. R

“…Relativistic charged particles (CRs for cosmic rays) produced by supernova explosion of the first generation of massive stars that are responsible for the…”
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The interaction of cosmic rays and magnetized plasma by Bell, A. R.

“…A large flux of cosmic rays streaming through a magnetized plasma creates cavities of low plasma density and low magnetic field. The magnetic field focuses the…”
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On the maximum energy of shock-accelerated cosmic rays at ultra-relativistic shocks by Reville, B., Bell, A. R.

“…The maximum energy to which cosmic rays can be accelerated at weakly magnetised ultra-relativistic shocks is investigated. We demonstrate that for such shocks,…”
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Collisionless shocks and TeV neutrinos before Supernova shock breakout from an optically thick wind by Giacinti, G., Bell, A. R.

“…During a supernova explosion, a radiation-dominated shock (RDS) travels through its progenitor. A collisionless shock (CS) is usually assumed to replace it…”
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Cosmic ray acceleration at oblique shocks by Bell, A. R., Schure, K. M., Reville, B.

“…We show that the diffusion approximation breaks down for particle acceleration at oblique shocks with velocities typical of young supernova remnants. Higher…”
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Laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma by Tzeferacos, P., Rigby, A., Bott, A. F. A., Bell, A. R., Bingham, R., Casner, A., Cattaneo, F., Churazov, E. M., Emig, J., Fiuza, F., Forest, C. B., Foster, J., Graziani, C., Katz, J., Koenig, M., Li, C.-K., Meinecke, J., Petrasso, R., Park, H.-S., Remington, B. A., Ross, J. S., Ryu, D., Ryutov, D., White, T. G., Reville, B., Miniati, F., Schekochihin, A. A., Lamb, D. Q., Froula, D. H., Gregori, G.

“…Magnetic fields are ubiquitous in the Universe. The energy density of these fields is typically comparable to the energy density of the fluid motions of the…”
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Diffusive Shock Acceleration and Magnetic Field Amplification by Schure, K. M., Bell, A. R., O’C Drury, L., Bykov, A. M.

“…Diffusive shock acceleration is the theory of particle acceleration through multiple shock crossings. In order for this process to proceed at a rate that can…”
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Generation of scaled protogalactic seed magnetic fields in laser-produced shock waves by Gregori, G., Ravasio, A., Murphy, C. D., Schaar, K., Baird, A., Bell, A. R., Benuzzi-Mounaix, A., Bingham, R., Constantin, C., Drake, R. P., Edwards, M., Everson, E. T., Gregory, C. D., Kuramitsu, Y., Lau, W., Mithen, J., Niemann, C., Park, H.-S., Remington, B. A., Reville, B., Robinson, A. P. L., Ryutov, D. D., Sakawa, Y., Yang, S., Woolsey, N. C., Koenig, M., Miniati, F.

“…Experimental simulations of galaxy-forming conditions using lasers show that the Biermann battery generates seed magnetic fields, which turbulence can amplify…”
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A filamentation instability for streaming cosmic rays by Reville, B., Bell, A. R.

“…We demonstrate that cosmic rays form filamentary structures in the precursors of supernova remnant shocks due to their self-generated magnetic fields. The…”
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Supersonic plasma turbulence in the laboratory by White, T. G., Oliver, M. T., Mabey, P., Kühn-Kauffeldt, M., Bott, A. F. A., Döhl, L. N. K., Bell, A. R., Bingham, R., Clarke, R., Foster, J., Giacinti, G., Graham, P., Heathcote, R., Koenig, M., Kuramitsu, Y., Lamb, D. Q., Meinecke, J., Michel, Th, Miniati, F., Notley, M., Reville, B., Ryu, D., Sarkar, S., Sakawa, Y., Selwood, M. P., Squire, J., Scott, R. H. H., Tzeferacos, P., Woolsey, N., Schekochihin, A. A., Gregori, G.

“…The properties of supersonic, compressible plasma turbulence determine the behavior of many terrestrial and astrophysical systems. In the interstellar medium…”
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Groundwater and resilience to drought in the Ethiopian highlands by MacDonald, A M, Bell, R A, Kebede, S, Azagegn, T, Yehualaeshet, T, Pichon, F, Young, M, McKenzie, A A, Lapworth, D J, Black, E, Calow, R C

“…During drought, groundwater is often relied on to provide secure drinking water, particularly in rural Africa where other options are limited. However, the…”
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Migration towards Bangladesh coastlines projected to increase with sea-level rise through 2100 by Bell, A R, Wrathall, D J, Mueller, V, Chen, J, Oppenheimer, M, Hauer, M, Adams, H, Kulp, S, Clark, P U, Fussell, E, Magliocca, N, Xiao, T, Gilmore, E A, Abel, K, Call, M, Slangen, A B A

“…To date, projections of human migration induced by sea-level change (SLC) largely suggest large-scale displacement away from vulnerable coastlines. However,…”
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Turbulent amplification of magnetic fields in laboratory laser-produced shock waves by Meinecke, J., Doyle, H. W., Miniati, F., Bell, A. R., Bingham, R., Crowston, R., Drake, R. P., Fatenejad, M., Koenig, M., Kuramitsu, Y., C. Kuranz, C., Lamb, D. Q., Lee, D., MacDonald, M. J., Murphy, C. D., Park, H-S., Pelka, A., Ravasio, A., Sakawa, Y., Schekochihin, A. A., Scopatz, A., Tzeferacos, P., Wan, W. C., Woolsey, N. C., Yurchak, R., Reville, B., Gregori, G.

“…The origin of the large magnetic fields observed in the interior of the supernova remnant Cassiopeia A is still unclear. Laboratory experiments of…”
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Cosmic ray acceleration to very high energy through the non-linear amplification by cosmic rays of the seed magnetic field by Bell, A. R., Lucek, S. G.

“…The maximum energy for cosmic ray acceleration at supernova shock fronts is usually thought to be limited to around1014−1015 eV by the size of the shock and…”
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