Zobrazeno 1 - 10 of 71 pro vyhledávání: '"Robert Fear"'
1
Flux Transfer Events in the Northern Hemisphere Polar Cusp Under Strong IMF Bx
Autor: Caoimhe Doherty, Andrew Fazakerley, Christopher Owen, Robert Fear, Colin Forsyth, Andrew Kavanagh, Karl-Heinz Trattner, Yulia Bogdanova
The location, shape, and size of the magnetospheric polar cusps are heavily influenced by upstream solar wind conditions. The effects of dominant IMF Bz and By components on the cusp are now well known. However, the effect of a strong IMF Bx componen
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::10c3d10f4965324e85313ecc9fa7e629
https://doi.org/10.5194/egusphere-egu22-9933
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2
Observations and simulations of northward IMF magnetotail structure
Autor: Laura Fryer, Robert Fear, Imogen Gingell, John Coxon, Minna Palmroth, Sanni Hoilijoki, Pekka Janhunen, Anita Kullen
We investigate the dynamic coupling between the solar wind and Earth’s magnetosphere during northward IMF conditions. The high latitude lobe regions of the magnetosphere during such conditions are generally characterised as containing cool, very lo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7a446e38cbdadaf3f721207233b2e3bd
https://doi.org/10.5194/egusphere-egu22-1177
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3
Fine-scale electric felds and Joule heating from observations of the Aurora
Autor: Patrik Krcelic, Robert Fear, Daniel Whiter, Betty Lanchester, Anasuya Aruliah
Our goal is to research highly dynamic electric fields near auroral arcs and their effects on the thermosphere via Joule heating. Optical measurements from three selected wavelengths have been combined with modelling of emissions from an auroral even
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ee32916ffbe02c5bef322832e2e07a3b
https://doi.org/10.5194/egusphere-egu22-6035
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4
Horizontal electric fields from flow of auroral O+(2P) ions at sub-second temporal resolution
Autor: S. Tuttle, Nickolay Ivchenko, Betty Lanchester, Mark Lester, Daniel Whiter, Björn Gustavsson, Robert Fear
Publikováno v: Annales Geophysicae. 38:845-859
Electric fields are a ubiquitous feature of the ionosphere and are intimately linked with aurora through particle precipitation and field-aligned currents. They exhibit order-of-magnitude changes on temporal and spatial scales of seconds and kilometr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::811033c80f9164285b7b9678463440f1
https://doi.org/10.5194/angeo-38-845-2020
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5
Solar Wind—Magnetosphere Coupling During Radial Interplanetary Magnetic Field Conditions: Simultaneous Multi‐Point Observations
Autor: J. Dargent, Robert Fear, C. P. Escoubet, Cecilia Norgren, K. J. Hwang, Huimin Fu, Benoit Lavraud, Jesús Fornieles, N. Aunai, S. A. Fuselier, T. D. Phan, Wangping Li, Yu. V. Khotyaintsev, Sergio Toledo-Redondo, Kevin Genestreti
Publikováno v: e2021JA029506
Journal of Geophysical Research Space Physics
Journal of Geophysical Research Space Physics, American Geophysical Union/Wiley, 2021, 126 (11), pp.e2021JA029506. ⟨10.1029/2021JA029506⟩
Digibug. Repositorio Institucional de la Universidad de Granada
instname
Journal of Geophysical Research (JGR): Space Physics
Journal of Geophysical Research Space Physics, 2021, 126 (11), pp.e2021JA029506. ⟨10.1029/2021JA029506⟩
S. Toledo-Redondo and J. Fornieles acknowledge support of the Ministry of Economy and Competitiveness (MINECO) of Spain (grant FIS2017-90102-R) and of Ministry of Science and Innovation (grant PID2020-112805GA-I00). Research at IRAP was supported by
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c6594f50e09d073174b9da0216306e75
https://doi.org/10.1029/2021ja029506
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6
Hot Plasma in the Magnetotail Lobes Shows Characteristics Consistent With Closed Field Lines Trapped in the Lobes
Autor: Robert Fear, Jade A. Reidy, John C. Coxon, James Plank, Laura Jane Fryer
We examine the magnetotail using data from the Hot Ion Analyzer on Cluster 1 during 2001–2009. We develop and utilize an algorithm in order to identify times during which Cluster 1 is in the magnetotail lobe but observes plasma, which is hotter tha
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22547aa138f44cef1fc60655c83a7925
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7
Observations of Closed Magnetic Flux Embedded in the Lobes During Periods of Northward IMF
Autor: Robert Fear, John C. Coxon, Imogen Gingell, Laura Jane Fryer
Publikováno v: Journal of Geophysical Research: Space Physics. 126
The high latitude, lobe regions of the magnetosphere are often assumed to contain cool, low energy plasma populations. However, during periods of northward Interplanetary Magnetic Field, energetic plasma populations have occasionally been observed. W
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a093a6b65ffa04d8ac7942389a502e2f
https://doi.org/10.1029/2021ja029281
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8
Properties of Magnetic Reconnection and FTEs on the Dayside Magnetopause With and Without Positive IMF B x Component During Southward IMF
Autor: Urs Ganse, Yann Pfau-Kempf, Minna Palmroth, Sanni Hoilijoki, Riku Jarvinen, Andrew Dimmock, Markus Battarbee, Paul Cassak, Xochitl Blanco-Cano, Emilia Kilpua, Lucile Turc, David G. Sibeck, Robert Fear, Liisa Juusola
Publikováno v: Journal of Geophysical Research: Space Physics
This paper describes properties and behavior of magnetic reconnection and flux transfer events (FTEs) on the dayside magnetopause using the global hybrid-Vlasov code Vlasiator. We investigate two simulation runs with and without a sunward (positive)
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2650ebfa3823a146712ac18532894c0a
https://doi.org/10.1029/2019ja026821
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9
Convection in the Magnetosphere-Ionosphere System:a Multi-Mission Survey of its Response to IMF By Reversals
Autor: J. Lane, Adrian Grocott, Stein Haaland, Robert Fear, Nathan Case
Publikováno v: e2019JA027541
Journal of Geophysical Research (JGR): Space Physics
Past studies have demonstrated that the interplanetary magnetic field (IMF) By component introduces asymmetries in the magnetosphere‐ionosphere (M‐I) system, though the exact timings involved are still unclear with two distinct mechanisms propose
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::056107217f2d4c5d417ea87e40e30842
https://doi.org/10.1029/2019JA027541
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10
Multi-scale observation of two polar cap arcs occurring on different magnetic field topologies
Autor: D. J. Price, J. A. Reidy, Larry J. Paxton, Daniel Whiter, Betty Lanchester, A. J. Kavanagh, Yongliang Zhang, J. M. Chadney, Robert Fear
This paper presents observations of polar cap arc substructure down to scale sizes of meters and temporal resolution of milliseconds. Two case studies containing polar cap arcs occurring over Svalbard are investigated. The first occurred on 4 Februar
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac4c749bb205ef1e7ca6d2fc78093095
https://eprints.soton.ac.uk/442292/
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