MHD Simulations of the Dynamics of Sharp Disturbances of the Interplanetary Medium and Comparison with Spacecraft Observations

Бархатов, Н. А.; Korolev, A. V.; Zastenker, G. N.; Ryazantseva, M. V.; Dalin, Peter

doi:10.1023/b:cosm.0000007951.49454.8a

Cited by 9 publications

(9 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 11c shows that the thermal pressure decreases by a factor of 3 inside the pulse and the magnetic pressure increases by a factor of 16. Barkhatov et al [2003] also show that the observed evolution and that predicted by an MHD model are similar. Two other mechanisms which could explain the different pulse widths observed by Wind and Interball‐1 are (1) the inclinations of the leading and trailing edges of the pulse are different and (2) the ion flux fronts are spatially inhomogeneous.…”

Section: Pressure Balance Across the Boundaries Of These Solar Wind Ssupporting

confidence: 63%

“…Figure 11 shows an example of an evolving event; the solar wind ion flux and IMF pulse expands in width between Wind (X se = 226 R e , Y se = 20.8 R e , Z se = −0.5 R e ) and Interball‐1 (X se = 9.3 R e , Y se = 23.3 R e , Z se = 9.8 R e ). Barkhatov et al [2003] show that the total pressure inside the flux pulse is twice the total pressure on either side of the pulse. Figure 11c shows that the thermal pressure decreases by a factor of 3 inside the pulse and the magnetic pressure increases by a factor of 16.…”

Section: Pressure Balance Across the Boundaries Of These Solar Wind Smentioning

confidence: 89%

“…We thank the NSSDC for providing Wind, ACE, IMP-8, and Geotail data. This work was supported by RFBR grant 04-02-16152, RFBR grant 04-02-39004, grant MPNT-nsh 1739.2003.2, grant MK 2267.2004.2 and by NSF grants ATM-0207775 and ATM-0203723.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Sharp boundaries of small‐ and middle‐scale solar wind structures

Рязанцева¹,

Zastenker²,

Richardson³

et al. 2005

J. Geophys. Res.

Self Cite

View full text Add to dashboard Cite

[1] This work reviews the characteristics of sharp (less than 10 min) and large (>0.5 Â 10 8 cm À2 s À1 ) solar wind ion flux changes which are not due to shocks. These changes are boundaries of small-and middle-scale solar wind plasma structures. We present examples and statistical results from simultaneous plasma and magnetic field measurements by Interball-1 and Wind from 1996 to 1999. The behavior of the solar wind bulk velocity, temperature, and interplanetary magnetic field (IMF) during these changes is described. We show that in many cases pressure balance is not maintained across these structures and discuss possible implications. In 50% of the events the sharp boundaries are pressure balanced structures; these events are probably tangential discontinuities. We use multipoint measurements of the sharp discontinuities to determine the orientation of the plasma fronts; many fronts are at large angles to the solar wind flow direction. We show that these events can be geoeffective and produce sharp changes in the magnetic field at geosynchronous orbit and on the ground.

show abstract

Section: Pressure Balance Across the Boundaries Of These Solar Wind Ssupporting

confidence: 63%

Section: Pressure Balance Across the Boundaries Of These Solar Wind Smentioning

confidence: 89%

See 1 more Smart Citation

Sharp boundaries of small‐ and middle‐scale solar wind structures

Рязанцева¹,

Zastenker²,

Richardson³

et al. 2005

J. Geophys. Res.

Self Cite

View full text Add to dashboard Cite

show abstract

“…PLASMA STRUCTURES The question of conservation of the pressure balance on sharp boundaries of solar wind plasma structures is quite important, since it determines the time evolution of small-scale structures of the solar wind [12]. It is shown in Fig.…”

Section: The Pressure Balance On Sharp Boundaries Of Solar Windmentioning

confidence: 99%

Sharp Boundaries of Solar Wind Plasma Structures and an Analysis of Their Pressure Balance

et al. 2005

Self Cite

View full text Add to dashboard Cite

This work is devoted to studying the sharp boundaries of small-scale structures of the solar wind according to the data of measurements with high time resolution onboard the INTERBALL-1 satellite and simultaneous measurements of the WIND spacecraft. Such issues as the character of change of various plasma and magnetic field parameters on these boundaries, the duration of boundary passage and the balance of the total (thermal plus magnetic) pressure on the boundaries of the structures are considered. On the basis of the vast statistical material available, the typical conditions in the solar wind are investigated, in which such sharp boundaries are observed.

show abstract

“…An integral Faraday cup in the ODPS (omni directional plasma sensor) instrument onboard the Russian high apogee satellite INTERBALL 1 (Riazantseva et al, 2005) was used. Recently, the data base was further expanded by analyzing the results of the experiment "Plasma F" onboard the Spektr R satellite of the RADIOASTRON project (Zastenker et al, 2003). In that experiment, the resolution is improved to a record value of 32 ms. 1 The article was translated by the authors.…”

Section: Summary Of Observations Problems Of Interpretationmentioning

confidence: 99%

Sharp boundaries of the solar wind flows: Nonlinear mechanisms and structures

Kropotkin

2015

Geomagn. Aeron.

View full text Add to dashboard Cite

Strongly inhomogeneous flows with very sharp boundaries have been identified in the solar wind. Interpretation of these observations is based on two well known nonlinear plasma effects. First, strong density irregularities of the flow can be generated at a certain distance from the source if there is modulation of the flow speed at the source level. Second, thus emerging inhomogeneities propagating in the plasma medium, experience a nonlinear profile distortion, which is expressed primarily in steepening of the leading edge of the propagating density concentration. On the small scale of the front, the picture is affected by superimposed kinetic effects which give rise to wave dispersion, and as a result determine the limiting small scale, on the order of the ion Larmor radius or ion inertial length.

show abstract

MHD Simulations of the Dynamics of Sharp Disturbances of the Interplanetary Medium and Comparison with Spacecraft Observations

Cited by 9 publications

References 4 publications

Sharp boundaries of small‐ and middle‐scale solar wind structures

Sharp boundaries of small‐ and middle‐scale solar wind structures

Sharp Boundaries of Solar Wind Plasma Structures and an Analysis of Their Pressure Balance

Sharp boundaries of the solar wind flows: Nonlinear mechanisms and structures

Contact Info

Product

Resources

About