Temporal structure of the fast convective flow in the plasma sheet: Comparison between observations and two-fluid simulations

By S. Ohtani, M. Shay, T. Mukai. 2004

273 citations recorded by the source corpus.

Subfields: Astronomy and Astrophysics, Molecular Biology

View Paper: https://www.semanticscholar.org/paper/3acf9b309215f58126bfc04022139fef0224c620

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Citations in the corpus

Magnetic flux transport by dipolarizing flux bundles (2013, background): “Often coexisting with each flow burst is a localized (<1min on temporal data series) enhancement in the northward magnetic field Bz [e.g., Angelopoulos et al., 1992; Ohtani et al., 2004].”
Substorm Current Wedge Revisited (2015, methodology): “Figure 6, from Ohtani et al. (2004), shows that an individual flow burst generally has a thin (ion scale, about 800–2000 km) frontside boundary, called the dipolarization front (DF).”
A statistical and event study of magnetotail dipolarization fronts (2011, methodology): “Single-spacecraft statistical studies and overall characteristics of fast flows and dipolarizations were obtained, using observations by Geotail (Ohtani et al., 2004) and data from Wind (Sigsbee et al., 2005).”
Multi-point observations of the Hall electromagnetic field and secondary island formation during magnetic reconnection (2006, methodology): “[10] The formation of ‘secondary’ islands has been observed in several different simulations of magnetic reconnection [Hesse et al., 1999; Ohtani et al., 2004; Drake et al., 2005; Daughton et al., 2006].”
Particle acceleration in dipolarization events (2013, result): “…of a dipolarization front, which is stopped closer to Earth, leading to an azimuthal and tailward expansion of the dipolarization signal and a tailward bounce of flow, consistent with observations [e.g., Ohtani et al., 2004; Runov et al., 2009; Nakamura et al., 2009; Panov et al., 2010a].”
A THEMIS multicase study of dipolarization fronts in the magnetotail plasma sheet (2011, methodology): “Superposed epoch analyses of Geotail observations have shown that transient dipolarizations observed near the leading edge of earthward fast flows include a sharp increase in the northward magnetic field component (Bz), preceded by a smaller amplitude, negative Bz variation [ Ohtani et al., 2004 ].”
Average thermodynamic and spectral properties of plasma in and around dipolarizing flux bundles (2015, background): “Within BBFs the plasma density is lower and the plasma temperature is higher than in the ambient plasma sheet [Sergeev et al., 1996; Ohtani et al., 2004; Sharma et al., 2008].”
Bursty bulk flows and dipolarization in MHD simulations of magnetotail reconnection (2011, background): “This feature is commonly observed to precede dipolarizations [e.g., Ohtani et al., 2004; Runov et al., 2009], although the short duration of the dips indicates kinetic scales not present in the MHD simulations [Runov et al., 2009].”
THEMIS observations of an earthward‐propagating dipolarization front (2009, methodology): “Recent superposed epoch analyses based on Geotail data reveal similarity in BBF-related variations of the north–south magnetic field component (Bz), ion density and temperature observed at 31 < X < 5 RE [Ohtani et al., 2004].”
Kinetic structure of the sharp injection/dipolarization front in the flow‐braking region (2009, background): “…characteristic Bz profile (short drop, then quick increase in the Bz-component) is not limited to the flow-braking region; it is probably formed in front of fast flows in the tail plasma sheet [Ohtani et al., 2004], where its sub-gyro scale thickness has recently been noted by Runov et al. [2009].”
Occurrence rate of earthward‐propagating dipolarization fronts (2012, methodology): “The statistical relation between the DF and the bursty bulk flow was examined using the Geotail [Ohtani et al., 2004] and Cluster [Takada et al., 2006] data.”
Wave and particle characteristics of earthward electron injections associated with dipolarization fronts (2010, methodology): “... layer associated with the dipolarization is ∼300 km/s, and its thickness is estimated to be ∼400 km [Runov et al., 2009], which is near the ion inertial length of 300 km. [8] It is important to recall that the electron injection and thin plasma boundary layer are closely related to the magnetic ”
Accelerated ions ahead of earthward propagating dipolarization fronts (2010, background): “It may be interesting to note that our case observations also agree well with statistical surveys of Geotail data, which suggested that earthward flows in the magnetotail (GSM x locations between −5 and −31 RE) typically appear ∼2 min before Bz enhancements [ Ohtani et al., 2004, Figures 5a and 5b]”
On the current sheets surrounding dipolarizing flux bundles in the magnetotail: The case for wedgelets (2013, background): “Observations have revealed that Bz remains strong for ~1min after DF passage, and then often, it gradually relaxes to its undisturbed value [Ohtani et al., 2004; Runov et al., 2011a].”