scholarly journals TWINS energetic neutral atom observations of local-time-dependent ring current anisotropy

2012 ◽  
Vol 117 (A11) ◽  
pp. n/a-n/a ◽  
Author(s):  
J. Goldstein ◽  
P. Valek ◽  
D. J. McComas ◽  
J. Redfern
Keyword(s):  
Local Time ◽  
Neutral Atom ◽  
Ring Current ◽  
Time Dependent ◽  
Energetic Neutral Atom

Energetic neutral atom image of a storm-time ring current

1987 ◽  
Vol 14 (6) ◽  
pp. 652-655 ◽  
Author(s):  
Edmond C. Roelof
Keyword(s):  
Neutral Atom ◽  
Ring Current ◽  
Energetic Neutral Atom

scholarly journals IMAGE/high-energy energetic neutral atom: Global energetic neutral atom imaging of the plasma sheet and ring current during substorms

2002 ◽  
Vol 107 (A12) ◽  
pp. SMP 21-1-SMP 21-13 ◽  
Author(s):  
P. Cson Brandt ◽  
R. Demajistre ◽  
E. C. Roelof ◽  
S. Ohtani ◽  
D. G. Mitchell ◽  
...  
Keyword(s):  
Plasma Sheet ◽  
Neutral Atom ◽  
Ring Current ◽  
High Energy ◽  
Energetic Neutral Atom

scholarly journals The NUADU experiment on TC-2 and the first Energetic Neutral Atom (ENA) images recorded by this instrument

2005 ◽  
Vol 23 (8) ◽  
pp. 2825-2849 ◽  
Author(s):  
S. McKenna-Lawlor ◽  
L. Li ◽  
S. Barabash ◽  
K. Kudela ◽  
J. Balaz ◽  
...  
Keyword(s):  
Neutral Atom ◽  
Ring Current ◽  
Global Scale ◽  
Measurement Range ◽  
Spatial Evolution ◽  
Energetic Neutral Atom ◽  
Temporal And Spatial ◽  
Low Altitude ◽  
Northern And Southern Hemispheres ◽  
South Polar

Abstract. The Earth’s ring current and how it responds to varying interplanetary conditions is described and an account provided of the production of Energetic Neutral Atoms (ENAs) in the geo-corona. Also, the potential to remotely monitor, on a global scale, the temporal and spatial evolution of magnetospheric plasma populations through analysing ENA images recorded during magnetic storms/substorms is indicated. A technical account of the Energetic NeUtral Atom Detector Unit NUADU aboard China’s TC-2 mission (measurement range 45–>158 keV) follows, together with an account of the scientific objectives of NUADU, both in stand-alone mode and in the context of multi-point imaging. Low altitude ENA emissions recorded by NUADU during south polar passages of TC-2 at the time of a moderate magnetic storm in September 2004, as well as bright ring current emissions recorded in November 2004 during a major geomagnetic storm, are presented and discussed in the context of various, accompanying, terrestrial disturbances. Also, ENA observations of the November 2004 ring current imaged simultaneously by TC-2/NUADU and by IMAGE/ HENA (viewing, respectively, from the Northern and Southern Hemispheres), are compared.

scholarly journals Inclusion of a time-dependent, non-local convection theory in a stellar evolution code

2006 ◽  
Vol 2 (S239) ◽  
pp. 314-316 ◽  
Author(s):  
Achim Weiss ◽  
Martin Flaskamp
Keyword(s):  
Velocity Field ◽  
Local Time ◽  
Stellar Evolution ◽  
Time Dependent ◽  
Test Cases ◽  
The Sun ◽  
Specific Test ◽  
Non Local ◽  
Convective Boundaries

AbstractThe non-local, time-dependent convection theory of Kuhfuß (1986) in both its one- and three-equation form has been implemented in the Garching stellar evolution code. We present details of the implementation and the difficulties encountered. Specific test cases have been calculated, among them a 5 M⊙ star and the Sun. These cases point out deficits of the theory. In particular, the assumption of an isotropic velocity field leads to too extensive overshooting and has to be modified at convective boundaries. Some encouraging aspects are indicated as well.

Strength of the Termination Shock Inferred from the Globally Distributed Energetic Neutral Atom Flux from IBEX

2021 ◽  
Vol 254 (2) ◽  
pp. 32
Author(s):  
Bishwas L. Shrestha ◽  
Eric J. Zirnstein ◽  
Jacob Heerikhuisen ◽  
Gary P. Zank
Keyword(s):  
Neutral Atom ◽  
Termination Shock ◽  
Energetic Neutral Atom ◽  
Atom Flux ◽  
Globally Distributed
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