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FältnamnIndikatorerMetadata
00004549naa a2200445 4500
001oai:DiVA.org:ltu-2410
003SwePub
008160929s2015 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-24102 URI
0247 a https://doi.org/10.1051/0004-6361/2015260462 DOI
040 a (SwePub)ltu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Brolies, Thomas W.u Space Science and Engineering Division, Southwest Research Institute (SwRI)4 aut
2451 0a Rosetta observations of solar wind interaction with the comet 67P/Churyumov-Gerasimenko
264 c 2015-10-30
264 1b EDP Sciences,c 2015
338 a print2 rdacarrier
500 a Validerad; 2015; Nivå 2; 20151123 (andbra)
520 a Context. The Rosetta spacecraft arrived at the comet 67P/Churyumov-Gerasimenko on August 6, 2014, which has made it possible to perform the first study of the solar wind interacting with the coma of a weakly outgassing comet. Aims. It is shown that the solar wind experiences large deflections (>45°) in the weak coma. The average ion velocity slows from the mass loading of newborn cometary ions, which also slows the interplanetary magnetic field (IMF) relative to the solar wind ions and subsequently creates a Lorentz force in the frame of the solar wind. The Lorentz force in the solar wind frame accelerates ions in the opposite direction of cometary pickup ion flow, and is necessary to conserve momentum. Methods. Data from the Ion and Electron Sensor are studied over several intervals of interest when significant solar wind deflection was observed. The deflections for protons and for He++ were compared with the flow of cometary pickup ions using the instrument's frame of reference. We then fit the data with a three-dimensional Maxwellian, and rotated the flow vectors into the Comet Sun Equatorial coordinate system, and compared the flow to the spacecraft's position and to the local IMF conditions. Results. Our observations show that the solar wind may be deflected in excess of 45° from the anti-sunward direction. Furthermore, the deflections change direction on a variable timescale. Solar wind protons are consistently more deflected than the He++. The deflections are not ordered by the spacecraft's position relative to the comet, but large changes in deflection are related to changes in the orthogonal IMF components
650 7a TEKNIK OCH TEKNOLOGIERx Elektroteknik och elektronikx Annan elektroteknik och elektronik0 (SwePub)202992 hsv//swe
650 7a ENGINEERING AND TECHNOLOGYx Electrical Engineering, Electronic Engineering, Information Engineeringx Other Electrical Engineering, Electronic Engineering, Information Engineering0 (SwePub)202992 hsv//eng
653 a Onboard space systems
653 a Rymdtekniska system
7001 a Burch, James L.u Southwest Research Institute, 6220 Culebra Road, San Antonio, Space Science and Engineering Division, Southwest Research Institute (SwRI)4 aut
7001 a Clark, Grace A.u Heliophysics Division, Goddard Space Flight Center4 aut
7001 a Koenders, Christophu Institut für Geophysik und Extraterrestrische Physik, Technische Universität Braunschweig4 aut
7001 a Behar, Etienneu Luleå tekniska universitet,Rymdteknik4 aut0 (Swepub:ltu)etibeh
7001 a Goldstein, Raymond M.u Space Science and Engineering Division, Southwest Research Institute (SwRI)4 aut
7001 a Fuselier, Stephen Anthonyu Space Science and Engineering Division, Southwest Research Institute (SwRI)4 aut
7001 a Mandt, Kathleen E.u Space Science and Engineering Division, Southwest Research Institute (SwRI)4 aut
7001 a Mokashi, Prachetu Southwest Research Institute, 6220 Culebra Road, San Antonio, Space Science and Engineering Division, Southwest Research Institute (SwRI)4 aut
7001 a Samara, M.u Heliophysics Division, Goddard Space Flight Center4 aut
7102 a Space Science and Engineering Division, Southwest Research Institute (SwRI)b Southwest Research Institute, 6220 Culebra Road, San Antonio, Space Science and Engineering Division, Southwest Research Institute (SwRI)4 org
7730 t Astronomy and Astrophysicsd : EDP Sciencesg 583q 583x 0004-6361x 1432-0746
8564 u https://www.aanda.org/articles/aa/pdf/2015/11/aa26046-15.pdf
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-2410
8564 8u https://doi.org/10.1051/0004-6361/201526046

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