Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Anita Kullen"'
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 21, Pp n/a-n/a (2024)
Abstract Transpolar arcs (TPAs) are often cusp‐aligned. Especially when multiple TPAs appear simultaneously, they join at the auroral signature of the cusp. Here we investigate the dayside connection point of TPAs using Defense Meteorological Satel
Externí odkaz:
https://doaj.org/article/c71d0dc7253f460082dc4d042aec5d7c
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 11 (2024)
The solar wind and its embedded magnetic field, the interplanetary magnetic field (IMF) together with magnetic reconnection power the large-scale plasma and magnetic flux circulation in the Earth’s magnetosphere-ionosphere system. This circulation
Externí odkaz:
https://doaj.org/article/bcc3f9f42c3c4d2fbdc4a71ffeab35c1
Autor:
Lei Cai, Anita Aikio, Anita Kullen, Yue Deng, Yongliang Zhang, Shun-Rong Zhang, Ilkka Virtanen, Heikki Vanhamäki
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
In the space physics community, processing and combining observational and modeling data from various sources is a demanding task because they often have different formats and use different coordinate systems. The Python package GeospaceLAB has been
Externí odkaz:
https://doaj.org/article/7673320d222b4ab3b038f8bfff90fc5c
Autor:
Timo Pitkänen, Anita Kullen, Lei Cai, Jong-Sun Park, Heikki Vanhamäki, Maria Hamrin, Anita T. Aikio, G. Siung Chong, Alexandre De Spiegeleer, Quanqi Shi
Publikováno v:
Geoscience Letters, Vol 8, Iss 1, Pp 1-11 (2021)
Abstract Evidence suggests that a non-zero dawn–dusk interplanetary magnetic field (IMF $$B_y$$ B y ) can cause a rotation of the cross-tail current sheet/neutral sheet around its axis aligned with the Sun–Earth line in Earth’s magnetotail. We
Externí odkaz:
https://doaj.org/article/7b7b694f0fed4936a2bdd315bccd2850
Autor:
Shannon Hill, Tuija Pulkkinen, Austin Brenner, Qusai Al Shidi, Agnit Mukhopadhyay, Anita Kullen, Harald Frey, Shasha Zou, Michael Liemohn
We present simulation results of a transpolar auroral arc event that show the arc formation occurs on both open and closed field lines and is sourced from both dayside and nightside magnetospheric reconnection. The dayside and nightside precipitation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abc7feb9a6ea35eb0d05550c1d0469a2
https://doi.org/10.5194/egusphere-egu23-11389
https://doi.org/10.5194/egusphere-egu23-11389
Publikováno v:
Journal of Geophysical Research: Space Physics. 128
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::573647a49d15416bb30cc30c2f6ce96e
https://doi.org/10.1029/2022ja030987
https://doi.org/10.1029/2022ja030987
Occasionally, the auroral oval is filled with arcs pointing from the night side towards the cusp. These aurorae are known as cusp-aligned arcs. While there have been some theoretical predictions about their origins, the cause of these arcs remains un
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::494fcde6db871b3699a441e7904ffc3d
https://doi.org/10.5194/egusphere-egu22-6554
https://doi.org/10.5194/egusphere-egu22-6554
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
https://doi.org/10.5194/egusphere-egu22-1177
Publikováno v:
Journal of Geophysical Research: Space Physics. 126
Fast earthward plasma flows are commonly observed in the magnetotail plasma sheet. These flows are often termed as bursty bulk flows because of their bursty nature, and they are considered to be generated by magnetic reconnection. Close to the neutra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::486c00b0c41fbd61c5660e8dc80d99a0
https://doi.org/10.1029/2021ja029233
https://doi.org/10.1029/2021ja029233
Autor:
A. De Spiegeleer, Jong-Sun Park, Karl Magnus Laundal, Timo Pitkänen, G. S. Chong, Paul Tenfjord, Anita Kullen, Maria Hamrin, Anmin Tian, Quanqi Shi
Publikováno v:
Geophysical Research Letters. 46:11698-11708
We use Geotail, Cluster, and Time History of Events and Macroscale Interactions during Substorms data over 15 years (1995–2009) to statistically investigate convective ion flows (V⊥xy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::113c96cefa1e286d5b8b978398a6dfb2
https://doi.org/10.1029/2019gl084190
https://doi.org/10.1029/2019gl084190