Search Results - "Eriksson, A. I"

Thermal ion imagers and Langmuir probes in the Swarm electric field instruments by Knudsen, D. J., Burchill, J. K., Buchert, S. C., Eriksson, A. I., Gill, R., Wahlund, J.‐E., Åhlen, L., Smith, M., Moffat, B.

“…The European Space Agency's three Swarm satellites were launched on 22 November 2013 into nearly polar, circular orbits, eventually reaching altitudes of…”
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Dayside electron temperature and density profiles at Mars: First results from the MAVEN Langmuir probe and waves instrument by Ergun, R. E., Morooka, M. W., Andersson, L. A., Fowler, C. M., Delory, G. T., Andrews, D. J., Eriksson, A. I., McEnulty, T., Jakosky, B. M.

“…We present Mars' electron temperature (Te) and density (ne) altitude profiles derived from the MAVEN (Mars Atmosphere and Volatile EvolutioN) mission deep dip…”
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On positively charged dust in the coma of comet 67P by Vigren, E, Eriksson, A I, Bergman, S

“…ABSTRACT Moment analysis of ion spectrograms measured by the Ion Composition Analyser (ICA) in the coma of comet 67P typically produces an ion number density…”
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Outflow of low-energy ions and the solar cycle by André, M., Li, K., Eriksson, A. I.

“…Magnetospheric ions with energies less than tens of eV originate from the ionosphere. Positive low‐energy ions are complicated to detect onboard sunlit…”
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Momentum and Pressure Balance of a Comet Ionosphere by Williamson, H. N., Nilsson, H., Stenberg Wieser, G., Eriksson, A. I., Richter, I., Goetz, C.

“…We calculate the momentum flux and pressure of ions measured by the Ion Composition Analyzer (ICA) on the Rosetta mission at comet 67P/Churyumov‐Gerasimenko…”
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The first in situ electron temperature and density measurements of the Martian nightside ionosphere by Fowler, C. M., Andersson, L., Ergun, R. E., Morooka, M., Delory, G., Andrews, D. J., Lillis, Robert J., McEnulty, T., Weber, T. D., Chamandy, T. M., Eriksson, A. I., Mitchell, D. L., Mazelle, C., Jakosky, B. M.

“…The first in situ nightside electron density and temperature profiles at Mars are presented as functions of altitude and local time (LT) from the Langmuir…”
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Spatial distribution of low-energy plasma around comet 67P/CG from Rosetta measurements by Edberg, N. J. T., Eriksson, A. I., Odelstad, E., Henri, P., Lebreton, J.-P., Gasc, S., Rubin, M., André, M., Gill, R., Johansson, E. P. G., Johansson, F., Vigren, E., Wahlund, J. E., Carr, C. M., Cupido, E., Glassmeier, K.-H., Goldstein, R., Koenders, C., Mandt, K., Nemeth, Z., Nilsson, H., Richter, I., Wieser, G. Stenberg, Szego, K., Volwerk, M.

“…We use measurements from the Rosetta plasma consortium Langmuir probe and mutual impedance probe to study the spatial distribution of low‐energy plasma in the…”
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Ion Velocity and Electron Temperature Inside and Around the Diamagnetic Cavity of Comet 67P by Odelstad, E., Eriksson, A. I., Johansson, F. L., Vigren, E., Henri, P., Gilet, N., Heritier, K. L., Vallières, X., Rubin, M., André, M.

“…A major point of interest in cometary plasma physics has been the diamagnetic cavity, an unmagnetized region in the innermost part of the coma. Here we combine…”
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Dust observations at orbital altitudes surrounding Mars by Andersson, L., Weber, T. D., Malaspina, D., Crary, F., Ergun, R. E., Delory, G. T., Fowler, C. M., Morooka, M. W., McEnulty, T., Eriksson, A. I., Andrews, D. J., Horanyi, M., Collette, A., Yelle, R., Jakosky, B. M.

“…Dust is common close to the martian surface, but no known process can lift appreciable concentrations of particles to altitudes above ~150 kilometers. We…”
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The Evolution of the Electron Number Density in the Coma of Comet 67P at the Location of Rosetta from 2015 November through 2016 March by Vigren, E., Edberg, N. J. T., Eriksson, A. I., Galand, M., Henri, P., Johansson, F. L., Odelstad, E., Rubin, M., Valliéres, X.

“…A comet ionospheric model assuming the plasma moves radially outward with the same bulk speed as the neutral gas and not being subject to severe reduction…”
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Saturn's Dusty Ionosphere by Morooka, M. W., Wahlund, J.‐E., Hadid, L. Z., Eriksson, A. I., Edberg, N. J. T., Vigren, E., Andrews, D. J., Persoon, A. M., Kurth, W. S., Gurnett, D. A., Farrell, W. M., Waite, J. H., Perryman, R. S., Perry, M.

“…Measurements of electrons and ions in Saturn's ionosphere down to 1,500‐km altitudes as well as the ring crossing region above the ionosphere obtained by the…”
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Ionospheric plasma density variations observed at Mars by MAVEN/LPW by Andrews, D. J., Andersson, L., Delory, G. T., Ergun, R. E., Eriksson, A. I., Fowler, C. M., McEnulty, T., Morooka, M. W., Weber, T., Jakosky, B. M.

“…We report on initial observations made by the Langmuir Probe and Waves relaxation soundingexperiment on board the NASA Mars Atmosphere and Volatile EvolutioN…”
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Saturn's Ionosphere: Electron Density Altitude Profiles and D‐Ring Interaction From The Cassini Grand Finale by Hadid, L. Z., Morooka, M. W., Wahlund, J.‐E., Persoon, A. M., Andrews, D. J., Shebanits, O., Kurth, W. S., Vigren, E., Edberg, N. J. T., Nagy, A. F., Eriksson, A. I.

“…We present the electron density (ne) altitude profiles of Saturn's ionosphere at near‐equatorial latitudes from all 23 orbits of Cassini's Grand Finale. The…”
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Earth's ionospheric outflow dominated by hidden cold plasma by Cully, C. M, Engwall, E, André, M, Torbert, R, Vaith, H, Eriksson, A. I

“…The Earth constantly loses matter, mostly in the form of H+ and O+ ions, through various outflow processes from the upper atmosphere and ionosphere. Most of…”
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Enhanced O2+ loss at Mars due to an ambipolar electric field from electron heating by Ergun, R. E., Andersson, L. A., Fowler, C. M., Woodson, A. K., Weber, T. D., Delory, G. T., Andrews, D. J., Eriksson, A. I., McEnulty, T., Morooka, M. W., Stewart, A. I. F., Mahaffy, P.R., Jakosky, B. M.

“…Recent results from the MAVEN Langmuir Probe and Waves instrument suggest higher than predicted electron temperatures (Te) in Mars' dayside ionosphere above…”
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Enhanced Escape of Spacecraft Photoelectrons Caused by Langmuir and Upper Hybrid Waves by Graham, D. B., Vaivads, A., Khotyaintsev, Yu. V., Eriksson, A. I., André, M., Malaspina, D. M., Lindqvist, P.‐A., Gershman, D. J., Plaschke, F.

“…The spacecraft potential is often used to infer rapid changes in the thermal plasma density. The variations in spacecraft potential associated with…”
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On the origin of molecular oxygen in cometary comae by Heritier, K. L., Altwegg, K., Berthelier, J.-J., Beth, A., Carr, C. M., De Keyser, J., Eriksson, A. I., Fuselier, S. A., Galand, M., Gombosi, T. I., Henri, P., Johansson, F. L., Nilsson, H., Rubin, M., Simon Wedlund, C., Taylor, M. G. G. T., Vigren, E

“…We have used generous assumptions in terms of production rates and ion fluxes to assess the production of O2- through ER reactions as a mechanism to explain…”
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Suprathermal electrons near the nucleus of comet 67P/Churyumov-Gerasimenko at 3AU: Model comparisons with Rosetta data by Madanian, H, Cravens, TE, Rahmati, A, Goldstein, R, Burch, J, Eriksson, AI, Edberg, NJT, Henri, P, Mandt, K, Clark, G, Rubin, M, Broiles, T, Reedy, N L

“…Observations of the coma near the nucleus of comet 67P/Churyumov-Gerasimenko (67P) made by the IES (Ion and Electron Sensor) instrument onboard the Rosetta…”
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Evolution of the plasma environment of comet 67P from spacecraft potential measurements by the Rosetta Langmuir probe instrument by Odelstad, E., Eriksson, A. I., Edberg, N. J. T., Johansson, F., Vigren, E., André, M., Tzou, C.-Y., Carr, C., Cupido, E.

“…We study the evolution of the plasma environment of comet 67P using measurements of the spacecraft potential from early September 2014 (heliocentric distance…”
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Statistical analysis of the location of the Martian magnetic pileup boundary and bow shock and the influence of crustal magnetic fields by Edberg, N. J. T., Lester, M., Cowley, S. W. H., Eriksson, A. I.

“…We use the data set from the magnetometer and electron reflectometer instruments on board the Mars Global Surveyor spacecraft to show that the crustal magnetic…”
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