Publications
407 results found
Masters A, Phan TD, Badman SV, et al., 2014, The plasma depletion layer in Saturn's magnetosheath, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 119, Pages: 121-130, ISSN: 2169-9380
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- Citations: 15
Masters A, Stawarz L, Fujimoto M, et al., 2013, <i>In situ</i> observations of high-Mach number collisionless shocks in space plasmas, PLASMA PHYSICS AND CONTROLLED FUSION, Vol: 55, ISSN: 0741-3335
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- Citations: 7
Grasset O, Bunce EJ, Coustenis A, et al., 2013, Review of Exchange Processes on Ganymede in View of Its Planetary Protection Categorization, ASTROBIOLOGY, Vol: 13, Pages: 991-1004, ISSN: 1531-1074
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- Citations: 9
Jackman CM, Achilleos N, Cowley SWH, et al., 2013, Auroral counterpart of magnetic field dipolarizations in Saturn's tail, PLANETARY AND SPACE SCIENCE, Vol: 82-83, Pages: 34-42, ISSN: 0032-0633
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- Citations: 51
Edberg NJT, Andrews DJ, Shebanits O, et al., 2013, Extreme densities in Titan's ionosphere during the T85 magnetosheath encounter, GEOPHYSICAL RESEARCH LETTERS, Vol: 40, Pages: 2879-2883, ISSN: 0094-8276
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- Citations: 24
Provan G, Cowley SWH, Sandhu J, et al., 2013, Planetary period magnetic field oscillations in Saturn's magnetosphere: Postequinox abrupt nonmonotonic transitions to northern system dominance, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 118, Pages: 3243-3264
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- Citations: 58
Branduardi-Raymont G, Ford PG, Hansen KC, et al., 2013, Search for Saturn's X-ray aurorae at the arrival of a solar wind shock, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 118, Pages: 2145-2156, ISSN: 2169-9380
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- Citations: 12
Andres N, Gomez DO, Bertucci C, et al., 2013, Saturn's ULF wave foreshock boundary: Cassini observations, PLANETARY AND SPACE SCIENCE, Vol: 79-80, Pages: 64-75, ISSN: 0032-0633
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- Citations: 17
Simon S, van Treeck SC, Wennmacher A, et al., 2013, Structure of Titan's induced magnetosphere under varying background magnetic field conditions: Survey of Cassini magnetometer data from flybys TA-T85, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 118, Pages: 1679-1699, ISSN: 2169-9380
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- Citations: 29
Grasset O, Dougherty MK, Coustenis A, et al., 2013, JUpiter ICy moons Explorer (JUICE): An ESA mission to orbit Ganymede and to characterise the Jupiter system, PLANETARY AND SPACE SCIENCE, Vol: 78, Pages: 1-21, ISSN: 0032-0633
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- Citations: 376
Sergis N, Jackman CM, Masters A, et al., 2013, Particle and magnetic field properties of the Saturnian magnetosheath: Presence and upstream escape of hot magnetospheric plasma, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 118, Pages: 1620-1634, ISSN: 2169-9380
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- Citations: 34
Badman SV, Masters A, Hasegawa H, et al., 2013, Bursty magnetic reconnection at Saturn's magnetopause, GEOPHYSICAL RESEARCH LETTERS, Vol: 40, Pages: 1027-1031, ISSN: 0094-8276
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- Citations: 72
Masters A, Stawarz L, Fujimoto M, et al., 2013, Electron acceleration to relativistic energies at a strong quasi-parallel shock wave, NATURE PHYSICS, Vol: 9, Pages: 164-167, ISSN: 1745-2473
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- Citations: 63
Masters A, Stawarz Ł, Fujimoto M, et al., 2013, Electron acceleration to relativistic energies at a strong quasi-parallel shock wave
Electrons can be accelerated to ultrarelativistic energies at strong (high-Mach number) collisionless shock waves that form when stellar debris rapidly expands after a supernova [4, 2, 19]. Collisionless shock waves also form in the flow of particles from the Sun (the solar wind), and extensive spacecraft observations have established that electron acceleration at these shocks is effectively absent whenever the upstream magnetic field is roughly parallel to the shock surface normal (quasi-parallel conditions) [16, 8, 10, 17, 14]. However, it is unclear whether this magnetic dependence of electron acceleration also applies to the far stronger shocks around young supernova remnants, where local magnetic conditions are poorly understood. Here we present Cassini spacecraft observations of an unusually strong solar system shock wave (Saturn’s bow shock) where significant local electron acceleration has been confirmed under quasi- parallel magnetic conditions for the first time, contradicting the established magnetic dependence of electron acceleration at solar system shocks [16, 8, 10, 17, 14]. Furthermore, the acceleration led to electrons at relativistic energies (∼ MeV), comparable to the highest energies ever attributed to shock-acceleration in the solar wind [16]. These observations suggest that at high-Mach numbers, like those of young supernova remnant shocks, quasi-parallel shocks become considerably more effective electron accelerators. For full details please see: Nature Physics, Volume 9, Issue 3, pp. 164-167.
Garrick-Bethell I, Lin RP, Sanchez H, et al., 2013, Lunar magnetic field measurements with a cubesat, Conference on Sensors and Systems for Space Applications VI, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X
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- Citations: 9
Stallard TS, Masters A, Miller S, et al., 2012, Saturn's auroral/polar H<sub>3</sub><SUP>+</SUP> infrared emission: The effect of solar wind compression, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 117, ISSN: 2169-9380
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- Citations: 19
Cao H, Russell CT, Wicht J, et al., 2012, Saturn's high degree magnetic moments: Evidence for a unique planetary dynamo, ICARUS, Vol: 221, Pages: 388-394, ISSN: 0019-1035
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- Citations: 32
Andriopoulou M, Roussos E, Krupp N, et al., 2012, A noon-to-midnight electric field and nightside dynamics in Saturn's inner magnetosphere, using microsignature observations, ICARUS, Vol: 220, Pages: 503-513, ISSN: 0019-1035
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- Citations: 45
Simon S, Kriegel H, Saur J, et al., 2012, Analysis of Cassini magnetic field observations over the poles of Rhea, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 117, ISSN: 2169-9380
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- Citations: 37
Luhmann JG, Ulusen D, Ledvina SA, et al., 2012, Investigating magnetospheric interaction effects on Titan's ionosphere with the Cassini orbiter Ion Neutral Mass Spectrometer, Langmuir Probe and magnetometer observations during targeted flybys, ICARUS, Vol: 219, Pages: 534-555, ISSN: 0019-1035
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- Citations: 14
Lai HR, Wei HY, Russell CT, et al., 2012, Reconnection at the magnetopause of Saturn: Perspective from FTE occurrence and magnetosphere size, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 117, ISSN: 2169-9380
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- Citations: 48
Masters A, Achilleos N, Cutler JC, et al., 2012, Surface waves on Saturn's magnetopause, PLANETARY AND SPACE SCIENCE, Vol: 65, Pages: 109-121, ISSN: 0032-0633
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- Citations: 36
Andrews DJ, Cowley SWH, Dougherty MK, et al., 2012, Planetary period oscillations in Saturn’s magnetosphere: Evolution of magnetic oscillation properties from southern summer to post-equinox, J. Geophys. Res., Vol: 117
Badman SV, Achilleos N, Arridge CS, et al., 2012, Cassini observations of ion and electron beams at Saturn and their relationship to infrared auroral arcs (vol 117, A04220, 2012), JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 117, ISSN: 2169-9380
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- Citations: 2
Masters A, Eastwood JP, Swisdak M, et al., 2012, The importance of plasma β conditions for magnetic reconnection at Saturn's magnetopause, GEOPHYSICAL RESEARCH LETTERS, Vol: 39, ISSN: 0094-8276
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- Citations: 96
Lamy L, Prange R, Hansen KC, et al., 2012, Earth-based detection of Uranus' aurorae, GEOPHYSICAL RESEARCH LETTERS, Vol: 39, ISSN: 0094-8276
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- Citations: 47
Lamy L, Prange R, Hansen KC, et al., 2012, Earth-based detection of Uranus' aurorae, GEOPHYSICAL RESEARCH LETTERS, Vol: 39, ISSN: 0094-8276
Bebesi Z, Krupp N, Szego K, et al., 2012, Analysis of energetic electron drop-outs in the upper atmosphere of Titan during flybys in the dayside magnetosphere of Saturn, ICARUS, Vol: 218, Pages: 1020-1027, ISSN: 0019-1035
Arridge CS, Agnor CB, Andre N, et al., 2012, Uranus Pathfinder: exploring the origins and evolution of Ice Giant planets, EXPERIMENTAL ASTRONOMY, Vol: 33, Pages: 753-791, ISSN: 0922-6435
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- Citations: 42
Badman SV, Achilleos N, Arridge CS, et al., 2012, Cassini observations of ion and electron beams at Saturn and their relationship to infrared auroral arcs, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 117, ISSN: 2169-9380
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- Citations: 51
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