Search Publications
Magnetosheath Plasma Flow and Its Response to IMF and Geodipole Tilt as Obtained From the Data-Based Modeling
Semenov, V. S.; Erkaev, N. V.; Tsyganenko, N. A. +1 more
Large-scale patterns of the steady-state magnetosheath plasma flow and their dependence on the interplanetary magnetic field (IMF) have been reconstructed for the first time on the basis of large multi-year multi-mission pool of spacecraft observations, concurrent interplanetary data, and an empirical high-resolution model. The flow model architec…
SHARP Shock Database
Russell, C. T.; Graham, D. B.; Vink, J. +8 more
Despite more than half a century of Collisionless shock (CS) research, our understanding of the processes of the shock energy dissipation into the charge particle heating and acceleration remains incomplete. To help to address the problem of the rate of the data analysis on CSs being well below of the rate of the data acquisition, an open-source h…
Seasonal Variation of the Martian Dayside Ionosphere
Zhai, Haohui; Ruan, Haibing
The Martian ionosphere has many similarities and differences compared to Earth, attracting significant attention. This paper utilizes radio occultation data from the Mars Global Surveyor (MGS), Mars Atmosphere and Volatile Evolution Mission (MAVEN), and ESA Mars Express mission (MEX), associated with the measurements from Mars Advanced Radar for S…
Measurement of the Taylor Microscale and the Effective Magnetic Reynolds Number in the Solar Wind With Cluster
Nakamura, R.; Narita, Y.; Matthaeus, W. H. +6 more
We use magnetic field data from the Cluster mission to estimate the value of the Taylor microscale and the effective magnetic Reynolds number in the interplanetary solar wind. Turbulent cascades can be characterized by the spatial scale at which dissipation begins to impact the local energy transfer, estimated by the Taylor microscale, as well as …
Suprathermal Outflowing H+ Ions in the Lobe Driven by an Interplanetary Shock: 2. A 3D Global Hybrid Simulation
Mouikis, C. G.; Wang, Chih-Ping; Wang, Xueyi +2 more
We conduct a global hybrid simulation of an observation event to affirm that an interplanetary (IP) shock can drive significant suprathermal (tens to hundreds of eV) H+ outflows from the polar cap. The event showed that a spacecraft in the lobe at ∼6.5 RE altitude above the polar cap observed the appearance of suprathermal ou…
Characterization of Magnetic Flux Contents for Two Flux Transfer Events From Both In Situ and Ionospheric Observations
Hasegawa, Hiroshi; Wang, Shuo; Hu, Qiang +2 more
Flux transfer events (FTEs) are a type of magnetospheric phenomena that exhibit distinctive observational signatures from the in situ spacecraft measurements. They are generally believed to possess a magnetic field configuration of a magnetic flux rope and formed through magnetic reconnection at the dayside magnetopause, sometimes accompanied with…
Global Structure of Magnetotail Reconnection Revealed by Mining Space Magnetometer Data
Sitnov, M. I.; Genestreti, K. J.; Tsyganenko, N. A. +5 more
Reconnection in the magnetotail occurs along so-called X-lines, where magnetic field lines tear and detach from plasma on microscopic spatial scales (comparable to particle gyroradii). In 2017-2020, the Magnetospheric MultiScale (MMS) mission detected X-lines in the magnetotail enabling their investigation on local scales. However, the global stru…
Applying Magnetic Curvature to MMS Data to Identify Thin Current Sheets Relative to Tail Reconnection
Farrugia, C. J.; Torbert, R. B.; Rogers, A. J. +1 more
Thin current sheets (TCSs) have been postulated to be a necessary precondition for reconnection onset. Magnetic reconnection X-lines in the magnetotail have been observed to be more common duskward of midnight. We take advantage of the MMS tetrahedral formation during the 2017-2020 MMS tail seasons to calculate the thickness of the cross-tail neut…
Properties of Flapping Current Sheet of the Martian Magnetotail
Rong, Zhaojin; Shen, Chao; Wei, Yong +5 more
Knowing the properties of the Martian magnetotail flapping waves is critical to understand the dynamics of the Martian induced magnetosphere. Based on the measurements by Mars Atmosphere and Volatile EvolutioN and a newly developed method, we provide the first quantitative study of Martian magnetotail flapping waves in comparison with Earth's magn…
Occurrence Rates of Electromagnetic Ion Cyclotron (EMIC) Waves With Rising Tones in the Van Allen Probes Data Set
Smith, C. W.; Kletzing, C. A.; Sigsbee, K. +1 more
In Fourier time-frequency power spectrograms of satellite magnetic field data, electromagnetic ion cyclotron (EMIC) waves may feature discrete, rising tone structures that rapidly increase in frequency. Using data from the Van Allen Probes Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) fluxgate magnetometer, we condu…