scholarly journals Bipolar electrostatic structures in the shock transition region: Evidence of electron phase space holes

1998 ◽  
Vol 25 (15) ◽  
pp. 2929-2932 ◽  
Author(s):  
S. D. Bale ◽  
P. J. Kellogg ◽  
D. E. Larsen ◽  
R. P. Lin ◽  
K. Goetz ◽  
...  
Keyword(s):  
Phase Space ◽  
Transition Region ◽  
Shock Transition

The dynamics of electron–ion coupling in the shock transition region

2003 ◽  
Vol 10 (4) ◽  
pp. 1113-1119 ◽  
Author(s):  
Nobue Shimada ◽  
Masahiro Hoshino
Keyword(s):  
Transition Region ◽  
Shock Transition

scholarly journals Observational Evidence of Magnetic Reconnection in the Terrestrial Bow Shock Transition Region

2019 ◽  
Vol 46 (2) ◽  
pp. 562-570 ◽  
Author(s):  
Shan Wang ◽  
Li‐Jen Chen ◽  
Naoki Bessho ◽  
Michael Hesse ◽  
Lynn B. Wilson ◽  
...  
Keyword(s):  
Magnetic Reconnection ◽  
Transition Region ◽  
Observational Evidence ◽  
Bow Shock ◽  
Shock Transition

scholarly journals Grooming at the cusp: all-orders predictions for the transition region of jet groomers

2021 ◽  
Vol 2021 (11) ◽  
Author(s):  
Kees Benkendorfer ◽  
Andrew J. Larkoski
Keyword(s):  
Phase Space ◽  
Transition Region ◽  
Mass Distribution ◽  
Hard Core ◽  
Factorization Theorem ◽  
Cusp Region ◽  
Fixed Order ◽  
Logarithmic Accuracy

Abstract Jet grooming has emerged as a necessary and vital tool for mitigating contamination radiation in jets. The additional restrictions on emissions imposed by the groomer can result in non-smooth behavior of resulting fixed-order distributions of observables measured on groomed jets. As a concrete example, we study the cusp in the hemisphere mass distribution of e+e−→ hadrons events groomed with soft drop. We identify the leading emissions that contribute in the region about the cusp and formulate an all-orders factorization theorem that describes how the cusp is resolved through arbitrary strongly-ordered soft and collinear emissions. The factorization theorem exhibits numerous novel features such as contributions from collinear modes that can cross hemisphere boundaries as well as requiring explicit subtraction of the limit in which resolved emissions become collinear to the hard core. We present resummation of the cusp region through next-to-leading logarithmic accuracy and describe how it can be matched with established factorization theorems that describe other groomed phase space regions.

scholarly journals DO N-PLANET SYSTEMS HAVE A BOUNDARY BETWEEN CHAOTIC AND REGULAR MOTIONS?

2007 ◽  
Vol 21 (23n24) ◽  
pp. 3981-3985
Author(s):  
JI-LIN ZHOU ◽  
YI-SUI SUN
Keyword(s):  
Phase Space ◽  
Transition Region ◽  
Velocity Dispersion ◽  
Planetary Systems ◽  
Ideal Model ◽  
Chaotic Motions ◽  
Initial Separation ◽  
Full Phase Space ◽  
Relative Separation ◽  
Orbital Crossing

Planetary systems consisting of one star and n planets with equal planet masses μ and scaled orbital separation are referred as EMS systems. They represent an ideal model for planetary systems during the post-oligarchic evolution. Through the calculation of Lyapunov exponents, we study the boundary between chaotic and regular regions of EMS systems. We find that for n ≥ 3, there does not exist a transition region in the initial separation space, whereas for n = 2, a clear borderline occurs with relative separation ∼ μ2/7 due to overlap of resonances (Wisdom, 1980). This phenomenon is caused by the slow diffusion of velocity dispersion (∼ t1/2, t is the time) in planetary systems with n ≥ 3, which leads to chaotic motions at the time of roughly two orders of magnitude before the orbital crossing occurs. This result does not conflict with the existence of transition boundary in the full phase space of N -body systems.

A one-dimensional self-gravitating stellar gas

1966 ◽  
Vol 25 ◽  
pp. 46-48 ◽  
Author(s):  
M. Lecar
Keyword(s):  
Gravitational Field ◽  
Phase Space ◽  
Motion Picture ◽  
Space Distribution ◽  
Two Dimensional ◽  
One Dimensional ◽  
Phase Space Distribution ◽  
Dimensional Phase Space ◽  
The Mean

“Dynamical mixing”, i.e. relaxation of a stellar phase space distribution through interaction with the mean gravitational field, is numerically investigated for a one-dimensional self-gravitating stellar gas. Qualitative results are presented in the form of a motion picture of the flow of phase points (representing homogeneous slabs of stars) in two-dimensional phase space.

Effects of Ambipolar Diffusion on Prominence Thread Models

1994 ◽  
Vol 144 ◽  
pp. 315-321 ◽  
Author(s):  
M. G. Rovira ◽  
J. M. Fontenla ◽  
J.-C. Vial ◽  
P. Gouttebroze
Keyword(s):  
Energy Balance ◽  
Transition Region ◽  
Ambipolar Diffusion ◽  
Line Profiles ◽  
Balance Equations ◽  
Model Calculations ◽  
Partial Frequency ◽  
Frequency Redistribution ◽  
Partial Frequency Redistribution ◽  
Theoretical Structure

AbstractWe have improved previous model calculations of the prominence-corona transition region including the effect of the ambipolar diffusion in the statistical equilibrium and energy balance equations. We show its influence on the different parameters that characterize the resulting prominence theoretical structure. We take into account the effect of the partial frequency redistribution (PRD) in the line profiles and total intensities calculations.

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