Reconstruction of propagating Kelvin-Helmholtz vortices at Mercury's magnetopause

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Fältnamn	Indikatorer	Metadata
000		03088naa a2200433 4500
001		oai:DiVA.org:kth-32067
003		SwePub
008		110405s2011 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-320672 URI
024	7	a https://doi.org/10.1016/j.pss.2011.05.0082 DOI
040		a (SwePub)kth
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Sundberg, Torbjörnu KTH,Rymd- och plasmafysik4 aut0 (Swepub:kth)u1mpz25b
245	1 0	a Reconstruction of propagating Kelvin-Helmholtz vortices at Mercury's magnetopause
264	1	b Elsevier BV,c 2011
338		a print2 rdacarrier
500		a QC 20120206
520		a A series of quasi-periodic magnetopause crossings were recorded by the MESSENGER spacecraft during its third flyby of Mercury on 29 September 2009, likely caused by a train of propagating Kelvin-Helmholtz (KH) vortices. We here revisit the observations to study the internal structure of the waves. Exploiting MESSENGER's rapid traversal of the magnetopause, we show that the observations permit a reconstruction of the structure of a rolled-up KH vortex directly from the spacecraft's magnetic field measurements. The derived geometry is consistent with all large-scale fluctuations in the magnetic field data, establishes the non-linear nature of the waves, and shows their vortex-like structure. In several of the wave passages, a reduction in magnetic field strength is observed in the middle of the wave, which is characteristic of rolled-up vortices and is related to the increase in magnetic pressure required to balance the centrifugal force on the plasma in the outer regions of a vortex, previously reported in computer simulations. As the KH wave starts to roll up, the reconstructed geometry suggests that the vortices develop two gradual transition regions in the magnetic field, possibly related to the mixing of magnetosheath and magnetospheric plasma, situated at the leading edges from the perspectives of both the magnetosphere and the magnetosheath.
650	7	a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe
650	7	a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng
653		a Mercury
653		a Kelvin-Helmholtz
653		a Magnetopause
653		a MESSENGER
700	1	a Boardsen, S.A.4 aut
700	1	a Slavin, J.A.4 aut
700	1	a Blomberg, Lars G.u KTH,Rymd- och plasmafysik4 aut0 (Swepub:kth)u1sm5h8r
700	1	a Cumnock, Judy A.u KTH,Rymd- och plasmafysik4 aut0 (Swepub:kth)u1qhxemy
700	1	a Solomon, S. C.4 aut
700	1	a Anderson, B. J.4 aut
700	1	a Korth, H.4 aut
710	2	a KTHb Rymd- och plasmafysik4 org
773	0	t Planetary and Space Scienced : Elsevier BVg 59:15, s. 2051-2057q 59:15<2051-2057x 0032-0633x 1873-5088
856	4	u https://ntrs.nasa.gov/api/citations/20110020828/downloads/20110020828.pdf
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-32067
856	4 8	u https://doi.org/10.1016/j.pss.2011.05.008

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Av författaren/redakt...: Sundberg, Torbjö ...; Boardsen, S.A.; Slavin, J.A.; Blomberg, Lars G ...; Cumnock, Judy A.; Solomon, S. C.; visa fler...; Anderson, B. J.; Korth, H.; visa färre...

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