Abstract We present an investigation into the currents within Jovian magnetodisc using all available spacecraft magnetometer data up until 28 July 2018. Using automated analysis processes as well most recent intrinsic field and current disk geometry models, a full local time coverage of 7,382 lobe traversals over 39 years is constructed. Our study demonstrates clear asymmetries in both radial azimuthal height‐integrated densities throughout disk. Asymmetries persist 30 R where models assume...

Abstract Underestimation of the transfer energy between magnetosphere and ionosphere, Poynting flux, is a persistent issue in space weather studies high‐latitude ionospheric models. Thought to be due inability resolve small‐scale fluctuations electric field, this underestimation could lead significant further underestimations parameters such as thermospheric mass density consequential satellite drag. Utilizing 16 Hz ion velocity magnetic field measurements from Swarm mission, we examine...

For the past three decades, ionospheric drift velocity measurements from Super Dual Auroral Radar Network (SuperDARN) have been combined at a nominal time resolution of two minutes to produce horizontal patterns high-latitude convective flow. Recently, SuperDARN radars operated by University Saskatchewan (codenamed Borealis), which overlook much northern hemisphere polar cap, upgraded enable form scanning can be carried out every 3.7 seconds without compromising on large field-of-views...

Abstract The B y component of the interplanetary magnetic field (IMF) plays an integral part in coupling solar wind‐magnetosphere‐ionosphere system. In this study, we use a suite magnetospheric spacecraft, with data spanning nearly 25 years, to statistically investigate control IMF on neutral sheet. Past studies have identified that thin layer magnetotail, which separates oppositely directed magnetotail lobes, responds reversals component. proposed method for driving response is through...

The Super Dual Auroral Radar Network (SuperDARN) is an international network of high frequency coherent scatter radars that are used for monitoring the electrodynamics Earth’s upper atmosphere at middle, high, and polar latitudes in both hemispheres. pyDARN open-source Python-based library developed specifically visualizing SuperDARN radar data products. It provides various plotting functions different types data, including time series plot, range-time parameter fields view, full scan,...

Abstract Three events are presented where high‐resolution measurements from the Swarm satellites coincided with excellent F‐region ionospheric coverage The Super Dual Auroral Radar Network (SuperDARN). Large‐scale convection patterns SuperDARN, together field‐aligned‐current he Active Magnetosphere and Planetary Response Experiment (AMPERE), provide information on quasi‐static dynamics traversed by Swarm. Because observations orbital path favorable SuperDARN/AMPERE observing conditions, it...

Abstract The location and motion of Saturn's equatorial current sheet is the result an interplay between a quasi‐static deformation that varies in radial distance local time, impulsive perturbations produce large‐scale displacements, quasiperiodic near planetary rotation period, wave‐like structures on shorter timescales. This study focuses latter, aperiodic wave pulses with periods from 1 to 30 min, which are unrelated “flapping” period rotation. Cassini magnetometer data were surveyed for...

Spacecraft attitude plays an important role in the observations of various atmospheric, planetary, and terrestrial parameters phenomena that are interest to scientific community. Precise measurements from imagers, particle sensors, antennas require accurate knowledge instrument orientation. cavsiopy is easy-to-install use, light-weight open-source Python package for researchers who need consider pointing direction observation geometry. contains coordinate transformation routines...

Abstract Saturn's morningside auroras consist mainly of rotating, transient emission patches, following periodic reconnection in the magnetotail. Simultaneous responses global energetic neutral atom (ENA) emissions have been observed at similar local times, suggesting a link between and large‐scale injections hot ions outer magnetosphere. In this study, we use Cassini's remote sensing instruments to observe multiple plasma injection signatures within coincident auroral ENA imagery, captured...

Abstract The equatorial current sheet at Saturn is the result of a rapidly rotating magnetosphere. itself exhibits periodic seasonal and diurnal movements as well aperiodic currently unknown origin, along with thickening thinning magnetodisc, azimuthal changes in thickness due to local effects In this paper magnetodisc are utilized calculate height‐integrated density using Harris model deformed by Gaussian wave function. We find time asymmetry both radial density. note that relationship...

Abstract Titan's magnetic environment is a dynamic and unique place. We detect 85 flux ropes during all the Cassini flybys of Titan from 2005–2017. Analysis describing location in ionosphere as well where Saturn's magnetosphere shows that are more often found when noon sector magnetosphere. A secondary peak occurrence postmidnight area, it expected highly dynamic. also find rope correlated with average electron density profile ionosphere. force‐free model utilized to estimate radii core...

Abstract Ionospheric outflow is the flow of plasma initiated by a loss equilibrium along magnetic field line, which induces an ambipolar electric due to separation electrons and ions in gravitational other mass‐dependent sources. We have developed ionospheric model using transport equations determine number particles that into outer magnetosphere Jupiter. The ranges from 1,400 km altitude above 1 bar level 2.5 R J line considers H + as main ion constituents. Previously, only pressure...

Underestimation of the transfer energy between magnetosphere and ionosphere, Poynting flux, is a persistent issue in space weather studies high-latitude ionospheric models. Thought to be due inability resolve small-scale fluctuations electric field, this underestimation could lead significant further underestimations parameters such as thermospheric mass density consequential satellite drag. Utilising 16Hz ion velocity magnetic field measurements from Swarm mission, we examine observed flux...

Abstract Previous work at Titan presented a set of 85 flux ropes detected during Cassini flybys from 2005 to 2017. In that study force‐free model was used determine the radii and axial magnetic field ropes. this we apply non‐force‐free models. The shows an improvement in number can be fitted with model, along improved uncertainties χ 2 values. A asymmetries features magnetometer data cannot reproduced by either model; therefore, deform show small deformations replicate these features. One...

Over the last few years, five SuperDARN HF ionospheric radars operated by University of Saskatchewan have been upgraded to digital systems that utilise flexibility and reliability software defined radios (SDRs). SDRs allow for a vastly greater control radar transmit receive operations, bringing with them new capabilities scientific experiments were previously not feasible on analogue hardware. This next generation is named Borealis.    One operating mode implemented at...

Abstract A multi‐instrument study is conducted at the dayside polar ionosphere to investigate spatio‐temporal evolution of scintillation in Global Navigation Satellite System (GNSS) signals during non‐storm conditions. Bursts intense amplitude and phase started occur 9 MLT persisted for more than 1 hour implying simultaneous existence Fresnel large‐scale sized irregularities significant strength pre‐noon sector. Measurements from EISCAT radar Svalbard (ESR) revealed presence dense plasma...

Abstract Routine spacecraft encounters with the Saturn current sheet due to passage of aperiodic waves provide opportunity analyze structure. The density is expected peak where field strength reaches a minimum if approximated as Harris sheet. However, in Earth's magnetotail this not always case sometimes bifurcated (having two or more maxima density). We utilize measurements Saturn's magnetic estimate during crossings by time differentiating B component coordinate system, perpendicular both...

Abstract Ionospheric outflow is driven by an ambipolar electric field induced due to the separation of electrons and ions in a gravitational when equilibrium along magnetic line lost. A model ionospheric at Saturn was developed using transport equations estimate number charged particles that flow from auroral regions into magnetosphere. The evaluates 1,400 km altitude above 1 bar level, 3 R S line. main ion constituents evaluated are + . We consider centrifugal force exerted on fast rotation...

We present three events where high-resolution electric and magnetic field measurements from the Swarm satellite constellation coincided with excellent F-region ionospheric coverage SuperDARN. Large-scale convection patterns SuperDARN, together field-aligned-current AMPERE, provide information on quasi-static dynamics traversed by Swarm. Because observations orbital path favorable SuperDARN/AMPERE observing conditions, it was possible to filter into a component that agreed SuperDARN field....

Carley J Martin and Christopher S Arridge discuss the dynamics of thin current sheet at Saturn's equator, a presentation that won Rishbeth Prize NAM in 2016.