Results 21 to 30 of about 1,869,289 (152)

Radiation belt phase space density: calculation analysis and model dependence

Frontiers in Astronomy and Space Sciences
The reprocessing of radiation belt electron flux measurements into phase space density (PSD) as a function of the adiabatic invariants is a widely-used method to address major questions regarding electron energization and loss in the outer radiation belt.
D. E. da Silva, S. R. Elkington, X. Li, M. K. Hudson, A. J. Boyd, A. N. Jaynes, M. Wiltberger   +6 more
doaj   +1 more source

Extremely rapid radiation belt electron losses across the magnetopause

Frontiers in Astronomy and Space Sciences
IntroductionThe Earth’s radiation belt environment is highly dynamic, with different processes acting on various particle populations over a range of timescales. Constraining the timescales over which these processes act is essential to both our physical
Alexis N. Hensley, Harriet George, Milla Kalliokoski, Leonid Olifer   +3 more
doaj   +1 more source

Quantifying Configuration-Sampling Error in Langevin Simulations of Complex Molecular Systems

Entropy, 2018
While Langevin integrators are popular in the study of equilibrium properties of complex systems, it is challenging to estimate the timestep-induced discretization error: the degree to which the sampled phase-space or configuration-space probability ...
Josh Fass, David A. Sivak, Gavin E. Crooks, Kyle A. Beauchamp, Benedict Leimkuhler, John D. Chodera   +5 more
doaj   +1 more source

Electron beam transverse phase space tomography using nanofabricated wire scanners with submicrometer resolution

Physical Review Accelerators and Beams, 2021
Characterization and control of the transverse phase space of high-brightness electron beams is required at free-electron lasers or electron diffraction experiments for emittance measurement and beam optimization as well as at advanced acceleration ...
Benedikt Hermann, Vitaliy A. Guzenko, Orell R. Hürzeler, Adrian Kirchner, Gian Luca Orlandi, Eduard Prat, Rasmus Ischebeck   +6 more
doaj   +1 more source

Rapidity dependence of deuteron production in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV

, 2011
We have measured the distributions of protons and deuterons produced in high energy heavy ion Au+Au collisions at RHIC over a very wide range of transverse and longitudinal momentum.
Arsene, I., Bearden, I. G., Beavis, D., Bekele, S., Besliu, C., BRAHMS Collaboration, Budick, B., Bøggild, H., Chasman, C., Christensen, C. H., Christensen, P., Dalsgaard, H. H., Debbe, R., Gaardhøje, J. J., Hagel, K., Ito, H., Jipa, A., Johnson, E. B., Jørgensen, C. E., Karabowicz, R., Katrynska, N., Kim, E. J., Larsen, T. M., Lee, J. H., Løvhøiden, G., Majka, Z., Murray, M., Natowitz, J., Nielsen, B. S., Nygaard, C., Ouerdane, D., Pal, D., Qville, A., Rami, F., Ristea, C., Ristea, O., Röhrich, D., Sanders, S. J., Staszel, P., Tveter, T. S., Videbæk, F., Wada, R., Yang, H., Yin, Z., Zgura, S.   +44 more
core   +1 more source

Density and duality theorems for regular Gabor frames

, 2015
We investigate Gabor frames on locally compact abelian groups with time-frequency shifts along non-separable, closed subgroups of the phase space. Density theorems in Gabor analysis state necessary conditions for a Gabor system to be a frame or a Riesz ...
Jakobsen, Mads Sielemann, Lemvig, Jakob
core   +1 more source

Secular evolution of galactic discs: constraints on phase-space density [PDF]

, 2005
It was argued in the past that bulges of galaxies cannot be formed through collisionless secular evolution because that would violate constraints on the phase-space density: the phase-space density in bulges is several times larger than in the inner ...
A. Carrillo, A. Klypin, Aguerri, Athanassoula, Athanassoula, Avila-Reese, Avila-Reese, Balcells, Bell, Binney, Bissantz, Bissantz, Blitz, Bournaud, Carlberg, Carollo, Chen, Ciotti, Combes, Combes, de Jong, Debattista, Debattista, Dehnen, Falcon-Barroso, Fukugita, Graham, Hernquist, Hernquist, Hernández, Holmberg, Hunt, Kerr, Klypin, Knapp, Kormendy, Kormendy, Kormendy, Kravtsov, Kuijken, Lake, Lewis, Lima-Neto, MacArthur, Navarro, Norman, O'Neill, O. Valenzuela, Pfenniger, Raha, Rocha-Pinto, Sellwood, Shapiro, Shen, Siebert, Spergel, Sérsic, Tremaine, Tremaine, V. Avila-Reese, Valenzuela, van den Bosch, Wadsley, Wyse, Wyse   +64 more
core   +1 more source

JIMWLK evolution, Lindblad equation and quantum-classical correspondence

Journal of High Energy Physics, 2020
In the Color Glass Condensate (CGC) effective theory, the physics of valence gluons with large longitudinal momentum is reflected in the distribution of color charges in the transverse plane.
Ming Li, Alex Kovner
doaj   +1 more source

A Model for Dark Matter Halos

, 2007
A halo model is presented which possesses a constant phase space density (Q) core followed by a radial CDM-like power law decrease in Q. The motivation for the core is the allowance for a possible primordial phase space density limit such as the Tremaine-
F. D. A. Hartwick, Sanchez-Salcedo F. J.
core   +1 more source

Gluon Distributions and Color Charge Correlations in a Saturated Light-cone Wavefunction [PDF]

, 2002
We describe the light-cone wavefunction in the saturation regime in terms of the density of gluons per unit of transverse phase space, the occupation number, and in terms of the color charge correlator.
A.H. Mueller, Balitsky, Balitsky, Balitsky, Balitsky, Blättel, Iancu, Iancu, Iancu, Iancu, Iancu, Jalilian-Marian, Kovchegov, Kovchegov, Kovchegov, Kovchegov, Kovchegov, Kuraev, Levin, McLerran, McLerran, McLerran, Mueller, Mueller   +23 more
core   +3 more sources