Equilibrium phase-space density distribution in numerical dynamical models of open clusters

2000 ◽  
Vol 44 (5) ◽  
pp. 298-308 ◽  
Author(s):  
V. M. Danilov
Keyword(s):  
Phase Space ◽  
Density Distribution ◽  
Equilibrium Phase ◽  
Open Clusters ◽  
Phase Space Density ◽  
Dynamical Models ◽  
Space Density

scholarly journals Two–Integral Models with Almost Circular Orbits

1993 ◽  
Vol 153 ◽  
pp. 359-360
Author(s):  
P. Batsleer ◽  
H. Dejonghe
Keyword(s):  
Phase Space ◽  
Space Structure ◽  
Phase Space Density ◽  
Dynamical Models ◽  
Circular Orbits ◽  
Maximum Phase ◽  
Space Density ◽  
Phase Space Structure

We present global dynamical models for bulge–disk systems. The phase–space structure is examined by means of two integral models. The models indicate that in the formation merger argument for ellipticals one cannot always assume that the maximum phase–space density occurs in the center of the system.

scholarly journals Ion density and phase space density distribution of planetary ions Na+, O+ and He+ in Mercury’s magnetosphere

Icarus ◽  
2021 ◽  
pp. 114734
Author(s):  
A.L.E. Werner ◽  
S. Aizawa ◽  
F. Leblanc ◽  
J.Y. Chaufray ◽  
R. Modolo ◽  
...  
Keyword(s):  
Phase Space ◽  
Density Distribution ◽  
Phase Space Density ◽  
Ion Density ◽  
Space Density

scholarly journals The Phase-space Density Distribution of Dark Matter Halos

2004 ◽  
Author(s):  
Liliya L. R. Williams ◽  
Crystal Austin ◽  
Eric Barnes ◽  
Arif Babul ◽  
Julianne Dalcanton
Keyword(s):  
Dark Matter ◽  
Phase Space ◽  
Density Distribution ◽  
Phase Space Density ◽  
Dark Matter Halos ◽  
Space Density

scholarly journals Density, Energy and Phase Space Density Distribution of Planetary Ions He+, O+ and Na+ in Mercury's Magnetosphere

2021 ◽  
Author(s):  
A. L. Elisabeth Werner ◽  
François Leblanc ◽  
Jean-Yves Chaufray ◽  
Ronan Modolo ◽  
Sae Aizawa ◽  
...  
Keyword(s):  
Phase Space ◽  
Density Distribution ◽  
Test Particle ◽  
Space Environment ◽  
Particle Model ◽  
Phase Space Density ◽  
Ion Density ◽  
Space Density ◽  
Upstream Solar Wind ◽  
The Impact

<p>The Mercury plasma environment is enriched in planetary ions from the tenuous neutral exosphere. We have developed a test-particle model which describes the full equation of motion for planetary ions produced from photo-ionization of the neutral exosphere. The new test-particle model is coupled to a Monte Carlo test-particle model of the neutral exosphere (Exospheric Global Model; EGM; Leblanc et al. 2017) and two hybrid-kinetic models: LatHyS (Modolo et al. 2016) and AIKEF (Müller et al. 2011). This coupling will allow us to consider the impact of non-adiabatic energization on the ion density distribution as well as the connection to seasonal asymmetries in the neutral exosphere.</p><p>We compare the density, energy and phase space density distribution of He+, O+ and Na+ from our model with observations from the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) time-of-flight spectrometer Fast Imaging Plasma Spectrometer (FIPS; Raines et al. 2013). Our results indicate the presence of several interesting high-density structures both inside and outside FIPS observable energy range (E = 0.05 -13 keV), the properties of which are likely very sensitive to the upstream solar wind conditions. We present how these results may aid the interpretation of FIPS data and future measurements by BepiColombo.</p>

scholarly journals Cooling of Sr to high phase-space density by laser and sympathetic cooling in isotopic mixtures

2006 ◽  
Vol 73 (2) ◽  
Author(s):  
G. Ferrari ◽  
R. E. Drullinger ◽  
N. Poli ◽  
F. Sorrentino ◽  
G. M. Tino
Keyword(s):  
Phase Space ◽  
Phase Space Density ◽  
Sympathetic Cooling ◽  
Space Density ◽  
High Phase

scholarly journals Comparison of energetic electron flux and phase space density in the magnetosheath and in the magnetosphere

2012 ◽  
Vol 117 (A5) ◽  
pp. n/a-n/a ◽  
Author(s):  
Bingxian Luo ◽  
Xinlin Li ◽  
Weichao Tu ◽  
Jiancun Gong ◽  
Siqing Liu
Keyword(s):  
Phase Space ◽  
Electron Flux ◽  
Energetic Electron ◽  
Phase Space Density ◽  
Space Density

scholarly journals Phase-space density in heavy-ion collisions revisited

2003 ◽  
Vol 30 (4) ◽  
pp. 517-523 ◽  
Author(s):  
Q. H. Zhang ◽  
J. Barrette ◽  
C. Gale
Keyword(s):  
Phase Space ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Phase Space Density ◽  
Space Density ◽  
Ion Collisions

Phase space density analysis of outer radiation belt electron energization and loss during geoeffective and non-geoeffective sheath regions

2021 ◽  
Author(s):  
Milla Kalliokoski ◽  
Emilia Kilpua ◽  
Adnane Osmane ◽  
Allison Jaynes ◽  
Drew Turner ◽  
...  
Keyword(s):  
Phase Space ◽  
Energetic Electron ◽  
Electron Content ◽  
Phase Space Density ◽  
Geomagnetic Disturbances ◽  
Interplanetary Coronal Mass Ejections ◽  
Outer Radiation Belt ◽  
Space Density ◽  
Sheath Region ◽  
Chorus Waves

<p>The energetic electron content in the Van Allen radiation belts surrounding the Earth can vary dramatically on timescales from minutes to days, and these electrons present a hazard for spacecraft traversing the belts. The outer belt response to solar wind driving is however yet largely unpredictable. Here we investigate the driving of the belts by sheath regions preceding interplanetary coronal mass ejections. Electron dynamics in the belts is governed by various competing acceleration, transport and loss processes. We analyzed electron phase space density to compare the energization and loss mechanisms during a geoeffective and a non-geoeffective sheath region. These two case studies indicate that ULF-driven inward and outward radial transport, together with the incursions of the magnetopause, play a key role in causing the outer belt electron flux variations. Chorus waves also likely contribute to energization during the geoeffective event. A global picture of the wave activity is achieved through a chorus proxy utilizing POES measurements. We highlight that also the non-geoeffective sheath presented distinct changes in outer belt electron fluxes, which is also evidenced by our statistical study of outer belt electron fluxes during sheath events. While not as intense as during geoeffective sheaths, significant changes in outer belt electron fluxes occur also during sheaths that do not cause major geomagnetic disturbances.</p>

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