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Conference paperMasters 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.
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Journal articleNakamura R, Plaschke F, Teubenbacher R, et al., 2013,
Inter-instrument calibration using magnetic field data from Flux Gate Magnetometer (FGM) and Electron Drift Instrument (EDI) onboard Cluster
, GEOSCIENTIFIC INSTRUMENTATION METHODS AND DATA SYSTEMS, Vol: 3, Pages: 459-487, ISSN: 2193-0856 -
Journal articlePudney MA, Carr CM, Schwartz SJ, et al., 2013,
Near equipment magnetic field verification and scaling
, GEOSCIENTIFIC INSTRUMENTATION METHODS AND DATA SYSTEMS, Vol: 3, Pages: 437-458, ISSN: 2193-0856 -
Journal articleKasahara S, Kronberg EA, Kimura T, et al., 2013,
Asymmetric distribution of reconnection jet fronts in the Jovian nightside magnetosphere
, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 118, Pages: 375-384, ISSN: 2169-9380- Author Web Link
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- Citations: 49
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Journal articleBanks JR, Brindley HE, 2013,
Evaluation of MSG-SEVIRI mineral dust retrieval products over North Africa and the Middle East
, REMOTE SENSING OF ENVIRONMENT, Vol: 128, Pages: 58-73, ISSN: 0034-4257- Author Web Link
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- Citations: 57
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Journal articleOrr A, Bracegirdle TJ, Hosking JS, et al., 2013,
Strong Dynamical Modulation of the Cooling of the Polar Stratosphere Associated with the Antarctic Ozone Hole
, JOURNAL OF CLIMATE, Vol: 26, Pages: 662-668, ISSN: 0894-8755- Author Web Link
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- Citations: 16
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Journal articleGraven HD, Xu X, Guilderson TP, et al., 2013,
COMPARISON OF INDEPENDENT Δ<SUP>14</SUP>CO<sub>2</sub> RECORDS AT POINT BARROW, ALASKA
, RADIOCARBON, Vol: 55, Pages: 1541-1545, ISSN: 0033-8222- Cite
- Citations: 8
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Book chapterSolanki SK, Krivova NA, Haigh JD, 2013,
Solar Irradiance Variability and Climate
, ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, VOL 51, Editors: Faber, VanDishoeck, Publisher: ANNUAL REVIEWS, Pages: 311-351- Author Web Link
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- Citations: 249
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Journal articleDhomse SS, Chipperfield MP, Feng W, et al., 2013,
Stratospheric O<sub>3</sub> changes during 2001-2010: the small role of solar flux variations in a chemical transport model
, ATMOSPHERIC CHEMISTRY AND PHYSICS, Vol: 13, Pages: 10113-10123, ISSN: 1680-7316- Author Web Link
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- Citations: 23
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Journal articleArcher MO, Hartinger MD, Horbury TS, 2013,
Magnetospheric “magic” frequencies as magnetopause surface eigenmodes
, Geophysical Research Letters, Vol: 40, Pages: 5003-5008Abstract. The persistent so-called “magic” magnetospheric frequencies are thought to be either directly driven by monochromatic solar wind pressure fluctuations or resonantly excited global (cavity/waveguide) or magnetopause surface eigenmodes. We distinguish between these cases by statistically investigating, using simultaneous observations, the magnetospheric response to jets in the subsolar magnetosheath. The broadband jets do not exhibit discrete frequencies, but do drive waves at the discrete “magic” frequencies, with both direct and resonant driving. We show that the expected fundamental frequencies of magnetopause surface eigenmodes have two preferential values over a wide range of upstream conditions, corresponding to fast and slow solar wind, and that their harmonics are in good agreement with the “magic” frequencies. We also show that the waves are largely inconsistent with global modes outside the plasmasphere. Thus we conclude that these “magic” frequencies are most likely due to magnetopause surface eigenmodes.
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Journal articleOwens MJ, Forsyth RJ, 2013,
The Heliospheric Magnetic Field
, LIVING REVIEWS IN SOLAR PHYSICS, Vol: 10, ISSN: 2367-3648- Author Web Link
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- Citations: 218
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Journal articleVolwerk M, Andre N, Arridge CS, et al., 2013,
Comparative magnetotail flapping: an overview of selected events at Earth, Jupiter and Saturn
, ANNALES GEOPHYSICAE, Vol: 31, Pages: 817-833, ISSN: 0992-7689- Author Web Link
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- Citations: 36
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Conference paperGarrick-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- Author Web Link
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- Citations: 9
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Conference paperForman MA, Wicks RT, Horbury TS, et al., 2013,
Scaling Anisotropy of the Power in Parallel and Perpendicular Components of the Solar Wind Magnetic Field
, 13th International Solar Wind Conference (Solar Wind), Publisher: AMER INST PHYSICS, Pages: 167-170, ISSN: 0094-243X- Author Web Link
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- Citations: 1
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Conference paperWicks RT, Matteini L, Horbury TS, et al., 2013,
Temperature anisotropy instabilities; combining plasma and magnetic field data at different distances from the Sun.
, 13th International Solar Wind Conference (Solar Wind), Publisher: AMER INST PHYSICS, Pages: 303-306, ISSN: 0094-243X- Author Web Link
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- Citations: 13
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Journal articleMarlier ME, DeFries RS, Voulgarakis A, et al., 2013,
El Nino and health risks from landscape fireemissions in southeast Asia
, Nature Climate Change, Vol: 3, Pages: 131-136 -
Journal articleVoulgarakis A, Naik V, Lamarque JF, et al., 2013,
Analysis of present day and future OH and methane lifetime in the ACCMIP simulations
, Atmospheric Chemistry and Physics, Vol: 13, Pages: 2563-2587 -
Journal articleLamarque JF, Shindell DT, Josse B, et al., 2013,
The Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP): overview and description of models, simulations and climate diagnostics
, Geosci. Model Dev., Vol: 6, Pages: 179-206 -
Journal articleShindell DT, Lamarque JF, Schulz M, et al., 2013,
Radiative forcing in the ACCMIP historical and future climate simulations
, Atmospheric Chemistry and Physics, Vol: 13, Pages: 2939-2974 -
Journal articleYoung PJ, Archibald AT, Bowman KW, et al., 2013,
Pre-industrial to end 21st century projections of tropospheric ozone from the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP)
, Atmospheric Chemistry and Physics, Vol: 13, Pages: 2063-2090 -
Journal articleStevenson DS, Young PJ, Naik V, et al., 2013,
Tropospheric ozone changes, radiative forcing and attribution to emissions in the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP)
, Atmospheric Chemistry and Physics, Vol: 13, Pages: 3063-3085 -
Journal articleShindell DT, Pechony O, Voulgarakis A, et al., 2013,
Interactive ozone and methane chemistry in GISS-E2 historical and future climate simulations
, Atmospheric Chemistry and Physics, Vol: 13, Pages: 2653-2689 -
Journal articleVoulgarakis A, Shindell DT, Faluvegi G, 2013,
Linkages between ozone depleting substances, tropospheric oxidation and aerosols
, Atmospheric Chemistry and Physics, Vol: 13, Pages: 4907-4916 -
Journal articleRyder CL, Highwood EJ, Rosenberg PD, et al., 2013,
Optical properties of Saharan dust aerosol and contribution from the coarse mode as measured during the Fennec 2011 aircraft campaign
, ATMOSPHERIC CHEMISTRY AND PHYSICS, Vol: 13, Pages: 303-325, ISSN: 1680-7316- Author Web Link
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- Citations: 154
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Journal articleShindell DT, Faluvegi G, Nazarenko L, et al., 2013,
Attribution of historical ozone forcing to anthropogenic emissions
, Nature Climate Change, Vol: 3, Pages: 567-570 -
Journal articleArcher MO, Horbury TS, 2013,
Magnetosheath dynamic pressure enhancements: Occurrence and typical properties
, Ann. Geophys., Vol: 31, Pages: 319-331 -
Journal articleSee V, Cameron RF, Schwartz SJ, 2013,
Non-adiabatic electron behaviour due to short-scale electric field structures at collisionless shock waves
, ANNALES GEOPHYSICAE, Vol: 31, Pages: 639-646, ISSN: 0992-7689- Author Web Link
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- Citations: 20
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Journal articleKhatiwala S, Tanhua T, Fletcher SM, et al., 2013,
Global ocean storage of anthropogenic carbon
, BIOGEOSCIENCES, Vol: 10, Pages: 2169-2191, ISSN: 1726-4170- Cite
- Citations: 389
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Journal articleWanninkhof R, Park G-H, Takahashi T, et al., 2013,
Global ocean carbon uptake: magnitude, variability and trends
, BIOGEOSCIENCES, Vol: 10, Pages: 1983-2000, ISSN: 1726-4170- Cite
- Citations: 297
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Journal articleYver CE, Graven HD, Lucas DD, et al., 2013,
Evaluating transport in the WRF model along the California coast
, ATMOSPHERIC CHEMISTRY AND PHYSICS, Vol: 13, Pages: 1837-1852, ISSN: 1680-7316- Author Web Link
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- Citations: 29
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