scholarly journals Cassini plasma observations of Saturn's magnetospheric cusp

2016 ◽  
Vol 121 (12) ◽  
pp. 12,047-12,067 ◽  
Author(s):  
Jamie M. Jasinski ◽  
Christopher S. Arridge ◽  
Andrew J. Coates ◽  
Geraint H. Jones ◽  
Nick Sergis ◽  
...  
Keyword(s):  
Magnetospheric Cusp

scholarly journals MESSENGER observations of planetary ion enhancements at Mercury’s northern magnetospheric cusp during Flux Transfer Event Showers

2021 ◽  
Author(s):  
Weijie Sun ◽  
James Slavin ◽  
Anna Milillo ◽  
Ryan Dewey ◽  
Stefano Orsini ◽  
...  
Keyword(s):  
Solar Wind ◽  
Large Scale ◽  
Transfer Event ◽  
Order Of Magnitude ◽  
In Situ Observations ◽  
Flux Transfer ◽  
Magnetospheric Cusp ◽  
Upward Moving ◽  
Entry Layer

Abstract At Mercury, several processes can release ions and neutrals out of the planet’s surface. Here we present enhancements of dayside planetary ions in the solar wind entry layer during flux transfer event (FTE) “showers” near Mercury’s northern magnetospheric cusp. In this entry layer, solar wind ions are accelerated and move downward (i.e. planetward) toward the cusps, which sputter upward-moving planetary ions within 1 minute. The precipitation rate is enhanced by an order of magnitude during FTE showers and the neutral density of the exosphere can vary by >10% due to this FTE-driven sputtering. These in situ observations of enhanced planetary ions in the entry layer likely correspond to an escape channel of Mercury’s planetary ions, and the large-scale variations of the exosphere observed on minute-timescales by ground-based telescopes. Comprehensive, future multi-point measurements made by BepiColombo will greatly enhance our understanding of the processes contributing to Mercury’s dynamic exosphere and magnetosphere.

scholarly journals Flow-aligned jets in the magnetospheric cusp: Results from the Geospace Environment Modeling Pilot Program

1995 ◽  
Vol 100 (A5) ◽  
pp. 7649 ◽  
Author(s):  
L. A. Weiss ◽  
P. H. Reiff ◽  
E. J. Weber ◽  
H. C. Carlson ◽  
M. Lockwood ◽  
...  
Keyword(s):  
Pilot Program ◽  
Environment Modeling ◽  
Magnetospheric Cusp

scholarly journals ROMA (Rank-Ordered Multifractal Analyses) of intermittency in space plasmas – a brief tutorial review

2010 ◽  
Vol 17 (5) ◽  
pp. 545-551 ◽  
Author(s):  
T. Chang ◽  
C. C. Wu ◽  
J. Podesta ◽  
M. Echim ◽  
H. Lamy ◽  
...  
Keyword(s):  
Large Scale ◽  
Auroral Zone ◽  
Space Plasmas ◽  
Dynamic Interactions ◽  
Stochastic Media ◽  
Mhd Simulations ◽  
Field Fluctuations ◽  
In Situ Observations ◽  
Magnetospheric Cusp

Abstract. Intermittent fluctuations are the consequence of the dynamic interactions of multiple coherent or pseudo-coherent structures of varied sizes in the stochastic media (Chang, 1999). We briefly review here a recently developed technique, the Rank-Ordered Multifractal Analysis (ROMA), which is both physically explicable and quantitatively accurate in deciphering the multifractal characteristics of such intermittent structures (Chang and Wu, 2008). The utility of the method is demonstrated using results obtained from large-scale 2-D MHD simulations as well as in-situ observations of magnetic field fluctuations from the interplanetary and magnetospheric cusp regions, and the broadband electric field oscillations from the auroral zone.

scholarly journals Complexity Phenomena and ROMA of the Earth’s Magnetospheric Cusp, Hydrodynamic Turbulence, and the Cosmic Web

2014 ◽  
Vol 172 (7) ◽  
pp. 2025-2043 ◽  
Author(s):  
Tom Chang ◽  
Cheng-chin Wu ◽  
Marius Echim ◽  
Hervé Lamy ◽  
Mark Vogelsberger ◽  
...  
Keyword(s):  
Hydrodynamic Turbulence ◽  
Magnetospheric Cusp

scholarly journals THE MAGNETOSPHERIC CUSP: STRUCTURE AND DYNAMICS

2010 ◽  
pp. 173-189
Author(s):  
Q. -G. ZONG ◽  
T. A. FRITZ ◽  
H. ZHANG ◽  
S. Y. FU ◽  
X. Z. ZHOU ◽  
...  
Keyword(s):  
Structure And Dynamics ◽  
Magnetospheric Cusp

scholarly journals Evidence for particle acceleration in the magnetospheric cusp

2008 ◽  
Vol 26 (7) ◽  
pp. 1993-1997 ◽  
Author(s):  
J. Chen
Keyword(s):  
Electric Fields ◽  
Charged Particles ◽  
Magnetic Fluctuations ◽  
Adjacent Region ◽  
Left Hand ◽  
Power Spectral ◽  
Large Fluctuations ◽  
Magnetospheric Cusp ◽  
New Evidence ◽  
Resonant Acceleration

Abstract. New evidence reveals that the charged particles can be energized locally in the magnetospheric cusp. The power spectral density of the cusp magnetic fluctuations shows increases by up to four orders of magnitude in comparison to an adjacent region. Large fluctuations of the cusp electric fields have been observed with an amplitude of up to 350 mV/m. The measured left-hand polarization of the cusp electric field at ion gyro-frequencies indicates that the cyclotron resonant acceleration mechanism is working in this region. The cyclotron resonant acceleration can energize ions from keV to MeV in seconds.

Ground-based observations ofFregion aurora associated with the magnetospheric cusp

1980 ◽  
Vol 85 (A5) ◽  
pp. 2185 ◽  
Author(s):  
C.S. Deehr ◽  
G.G. Sivjee ◽  
A. Egeland ◽  
K. Henriksen ◽  
P.E. Sandholt ◽  
...  
Keyword(s):  
Magnetospheric Cusp

Jupiter’s polar auroral bright spots as seen by Juno-UVS

2020 ◽  
Author(s):  
Kamolporn Haewsantati ◽  
Bertrand Bonfond ◽  
Suwicha Wannawichian ◽  
George R Gladstone
Keyword(s):  
Hubble Space Telescope ◽  
Bright Spot ◽  
Time Interval ◽  
Systematic Analysis ◽  
X Ray ◽  
Bright Spots ◽  
Polar Aurora ◽  
The Difference ◽  
Magnetospheric Cusp ◽  
First Time

<p>The instruments on board the NASA Juno mission provides scientists with a wealth of unprecedented details about Jupiter. In particular, the Ultraviolet Spectrograph (UVS) is dedicated to the study of Jupiter’s aurora in the 60-200 nm wavelength range. The images taken by Juno-UVS reveals for the first time a complete view of Jupiter’s aurora, including the nightside part hidden from the Earth-orbiting Hubble Space Telescope (HST). This work aims to study Jupiter’s polar aurora using images obtained from the UVS instruments. Here we present the systematic analysis of one of the most spectacular features of Jupiter’s polar-most aurora, called the bright spot. The emitted power of the bright spots ranges from a few to a hundred GWs. Within a Juno perijove, the spots reappear at almost the same positions in system III. The time interval between two consecutive brightenings is a few tens of minutes, comparable to Jupiter’s X-ray pulsation. The comparison of the time interval with X-ray observation is under the investigation. Comparing the difference perijove sequences, the system III positions of bright spots in the northern hemisphere are concentrated in a region around 175 degrees of system III longitude and 65 degrees of latitude. On the other hand, the positions of bright spot aurora the southern hemisphere are scattered all around the pole. Previous studies suggested that the bright spot could correspond to noon facing magnetospheric cusp. However and surprisingly, we have discovered that the bright spots could map to any magnetic local time, putting this interpretation into question.</p>

Ionosphere and ground-based response to field-aligned currents near the magnetospheric cusp regions

1987 ◽  
Vol 92 (A7) ◽  
pp. 7739 ◽  
Author(s):  
L. J. Lanzerotti ◽  
R. D. Hunsucker ◽  
D. Rice ◽  
L. C. Lee ◽  
A. Wolfe ◽  
...  
Keyword(s):  
Magnetospheric Cusp

Well-resolved observations by ISEE 2 of ion dispersion in the magnetospheric cusp

1993 ◽  
Vol 98 (A8) ◽  
pp. 13429-13440 ◽  
Author(s):  
J. L. Phillips ◽  
S. J. Bame ◽  
R. C. Elphic ◽  
J. T. Gosling ◽  
M. F. Thomsen ◽  
...  
Keyword(s):  
Magnetospheric Cusp
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