Time dependent radial diffusion modeling of relativistic electrons with realistic loss rates

By Y. Shprits, R. Thorne. 2004

135 citations recorded by the source corpus.

Subfields: Astronomy and Astrophysics, Geophysics

View Paper: https://www.semanticscholar.org/paper/c94f73ffd53c72777180d990746a435242bb12a5

How researchers see this paper

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In Astronomy and Astrophysics

1. R. Thorne
2. Nigel P. Meredith
3. R. Horne
4. Y. Shprits
5. Wen Li
6. Binbin Ni
7. Jacob Bortnik
8. S. Glauert

In Geophysics

1. R. Thorne
2. Nigel P. Meredith
3. R. Horne
4. Y. Shprits
5. Binbin Ni
6. Wen Li
7. Jacob Bortnik
8. S. Glauert

Citations in the corpus

• Space Weather Modeling Framework: A new tool for the space science community (2005, methodology): “The physics of this domain can be solved with the same two techniques mentioned for the Inner Magnetosphere, that is, numerical discretization of the kinetic equation [Beutier and Boscher, 1995; Shprits and Thorne, 2004] or test particle tracking [Elkington et al., 1999].”
• Parameterization of radiation belt electron loss timescales due to interactions with chorus waves (2007, methodology): “These parameterizations of stochastic processes may also be used in radial diffusion codes [e.g., Shprits and Thorne, 2004; Barker et al., 2005], and particle tracing codes [e.g., Elkington et al., 2003; Ukhorskiy et al., 2005], which require additional specification of processes that violate the ”
• Kinetic simulations of ring current evolution during the Geospace Environment Modeling challenge events (2006, methodology): “We consider only magnetic diffusion, as the dominant diffusive process [ Shprits and Thorne, 2004 ], and to avoid double-counting of the effects of time-varying electric fields.”
• Origins of plasmaspheric hiss (2006, background): “Electrons can penetrate the plasmasphere during the afternoon and evening MLT sector where the plasmapause extends to larger L. Furthermore, electrons with energies of a few keV and higher can be transported inward via radial diffusion, particularly during magnetically disturbed periods [e.g., Schul”
• The dual role of ELF/VLF chorus waves in the acceleration and precipitation of radiation belt electrons (2007, background): “Thus, chorus is believed to play an important role as a loss process during the main phase of storms, comparable to other loss processes which also act on the timescale of a day, such as combined scattering by plasmaspheric hiss and EMIC waves (Albert, 2003; Summers and Thorne, 2003) as well as radi”
• Evolution of electron fluxes in the outer radiation belt computed with the VERB code (2009, methodology): “4.2. Sensitivity to the Boundary Condition at L* =7 [17] To show the importance of the assumed energy spectrum at the radial boundary (L* = 7), we compare simulations with boundary conditions used for radial diffusion studies [ Shprits and Thorne, 2004; Shprits et al., 2006b] and extrapolated to lo”
• Timescale for MeV electron microburst loss during geomagnetic storms (2005, background): “Outer zone MeV electron lifetimes of less than a day (for storm main phase conditions) have also been reported from radial diffusion modeling [Shprits and Thorne, 2004].”
• Timescales for radiation belt electron acceleration and loss due to resonant wave-particle interactions: 1. Theory (2007, background): “…there is evidence that an additional local acceleration mechanism (e.g., VLF chorus diffusion) is required to explain the observed relativistic electron flux increases in the region 3 < L < 5 [e.g., O’Brien et al., 2003; Miyoshi et al., 2003, 2004; Shprits and Thorne, 2004; Iles et al., 2006].”
• Storm time evolution of the outer radiation belt: Transport and losses (2006, background): “diffusion coefficient at Kp = 2. These conditions are often taken as initial conditions in radial diffusion models of transport in the belt [e.g., Shprits and Thorn, 2004 ].”
• Dynamics of the Earth’s Particle Radiation Environment (2009, background): “…belts has, hitherto, been underestimated when satellite data at geostationary orbit are used as an outer boundary (Brautigam and Albert 2000; Shprits and Thorne 2004; Shprits et al. 2006b; Lam et al. 2007), and, thus, additional local wave acceleration processes must be incorporated into…”
• Simulation of the outer radiation belt electrons near geosynchronous orbit including both radial diffusion and resonant interaction with Whistler‐mode chorus waves (2005, background): “However, simulations of relativistic electron variations during high magnetic activity conditions [e.g., Brautigam and Albert, 2000; Miyoshi et al., 2003, Shprits and Thorne, 2004 ] suggest that inward radial diffusion alone cannot account for the observed temporal and spatial flux variations.”
• Dynamic evolution of energetic outer zone electrons due to wave‐particle interactions during storms (2007, background): “Inward radial diffusion driven by drift resonance with enhanced ULF waves [Elkington et al., 2003; Shprits and Thorne, 2004; Shprits et al., 2005] will also lead to particle acceleration during inward radial transport in locations where there is a positive radial gradient in particle PSD.”