Zobrazeno 1 - 10
of 149
pro vyhledávání: '"D. J. Gershman"'
Autor:
J. M. H. Beedle, L.‐J. Chen, J. R. Shuster, H. Gurram, D. J. Gershman, Y. Chen, R. C. Rice, B. L. Burkholder, A. S. Ardakani, K. J. Genestreti, R. B. Torbert
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 13, Pp n/a-n/a (2024)
Abstract On 24 April 2023, a Coronal Mass Ejection event caused the solar wind to become sub‐Alfvénic, leading to the development of an Alfvén Wing configuration in the Earth's magnetosphere. Alfvén Wings have previously been observed as cavitie
Externí odkaz:
https://doaj.org/article/30134e26532e46898b7c07efb9fc474b
Autor:
B. L. Burkholder, L.‐J. Chen, M. Sarantos, D. J. Gershman, M. R. Argall, Y. Chen, C. Dong, F. D. Wilder, O. Le Contel, H. Gurram
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 6, Pp n/a-n/a (2024)
Abstract When the solar wind speed falls below the local Alfvén speed, the magnetotail transforms into an Alfvén wing configuration. A Grid Agnostic Magnetohydrodynamics for Extended Research Applications (GAMERA) simulation of Earth's magnetospher
Externí odkaz:
https://doaj.org/article/fa8e0ac4c3b441cba90818579c94f569
Autor:
Tongkuai Li, Wenya Li, Binbin Tang, Yuri. V. Khotyaintsev, Daniel Bruce Graham, Akhtar Ardakani, J. L. Burch, D. J. Gershman, B. Lavraud, C. T. Russell, Quanming Lu, Xiaocheng Guo, Chi Wang
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 20, Pp n/a-n/a (2023)
Abstract We present Magnetospheric Multiscale (MMS) observations of a K‐H wave event under southward IMF conditions, accompanied by ongoing magnetic reconnection. The nonlinear K‐H waves are characterized by quasi‐periodic fluctuations, the pre
Externí odkaz:
https://doaj.org/article/5f511993824a4784826e2160ce97ae09
Autor:
S. A. Fuselier, S. M. Petrinec, K. J. Trattner, K. LLera, J. L. Burch, D. J. Gershman, M. A. Dayeh, N. Schwadron, H. O. Funsten, D. J. McComas
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 20, Pp n/a-n/a (2023)
Abstract Combined in situ ion measurements and remote sensing of energetic neutral atoms are used to determine the geocoronal Hydrogen density at large (∼10 RE) distances from the Earth. This method for determining the geocoronal density requires g
Externí odkaz:
https://doaj.org/article/fa251c6ab45d442098bb0f76d9758b7d
Autor:
N. Kitamura, T. Amano, Y. Omura, S. A. Boardsen, D. J. Gershman, Y. Miyoshi, M. Kitahara, Y. Katoh, H. Kojima, S. Nakamura, M. Shoji, Y. Saito, S. Yokota, B. L. Giles, W. R. Paterson, C. J. Pollock, A. C. Barrie, D. G. Skeberdis, S. Kreisler, O. Le Contel, C. T. Russell, R. J. Strangeway, P.-A. Lindqvist, R. E. Ergun, R. B. Torbert, J. L. Burch
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-12 (2022)
Excitation of whistler-mode waves by cyclotron instability is considered as the likely generation process of the waves. Here, the authors show direct observational evidence for locally ongoing secular energy transfer from the resonant electrons to th
Externí odkaz:
https://doaj.org/article/ad624c4396ec4f62824af55a223f9b45
Autor:
M. Øieroset, T. D. Phan, J. F. Drake, M. Starkey, S. A. Fuselier, I. J. Cohen, C. C. Haggerty, M. A. Shay, M. Oka, D. J. Gershman, K. Maheshwari, J. L. Burch, R. B. Torbert, R. J. Strangeway
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 2, p 144 (2024)
We survey 20 reconnection outflow events observed by Magnetospheric MultiScale in the low- β and high-Alfvén-speed regime of the Earth’s magnetotail to investigate the scaling of ion bulk heating produced by reconnection. The range of inflow Alfv
Externí odkaz:
https://doaj.org/article/3b721ad915814b1eb883e6be761720f1
Autor:
D. B. Graham, Yu. V. Khotyaintsev, M. André, A. Vaivads, A. Divin, J. F. Drake, C. Norgren, O. Le Contel, P.-A. Lindqvist, A. C. Rager, D. J. Gershman, C. T. Russell, J. L. Burch, K.-J. Hwang, K. Dokgo
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-9 (2022)
It is suggested that waves can provide both diffusion and resistivity that can potentially support the reconnection electric field in low-density astrophysical plasmas. Here, the authors show, using direct spacecraft measurements, that the waves cont
Externí odkaz:
https://doaj.org/article/035c61fc00684615bd84886f172aaac5
Autor:
K.-J. Hwang, J. M. Weygand, D. G. Sibeck, J. L. Burch, M. L. Goldstein, C. P. Escoubet, E. Choi, K. Dokgo, B. L. Giles, C. J. Pollock, D. J. Gershman, C. T. Russell, R. J. Strangeway, R. B. Torbert
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
The solar wind-magnetosphere interaction drives diverse physical processes on the flanks of Earth’s magnetopause, and in turn these processes couple to the ionosphere. We investigate simultaneous multipoint in-situ spacecraft and ground-based measu
Externí odkaz:
https://doaj.org/article/bb5c8e000c9b4d78adb7c2f0bee1ea50
Autor:
San Lu, Rongsheng Wang, Quanming Lu, V. Angelopoulos, R. Nakamura, A. V. Artemyev, P. L. Pritchett, T. Z. Liu, X.-J. Zhang, W. Baumjohann, W. Gonzalez, A. C. Rager, R. B. Torbert, B. L. Giles, D. J. Gershman, C. T. Russell, R. J. Strangeway, Y. Qi, R. E. Ergun, P.-A. Lindqvist, J. L. Burch, Shui Wang
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020)
Magnetotail reconnection plays a crucial role in explosive energy conversion in geospace. Here, the authors show that magnetotail reconnection starts from electron reconnection in the presence of a strong external driver, which then develops into ion
Externí odkaz:
https://doaj.org/article/7d4a9d5a99f34358a2787c2a549adb03
Autor:
W. Y. Li, D. B. Graham, Yu. V. Khotyaintsev, A. Vaivads, M. André, K. Min, K. Liu, B. B. Tang, C. Wang, K. Fujimoto, C. Norgren, S. Toledo-Redondo, P.-A. Lindqvist, R. E. Ergun, R. B. Torbert, A. C. Rager, J. C. Dorelli, D. J. Gershman, B. L. Giles, B. Lavraud, F. Plaschke, W. Magnes, O. Le Contel, C. T. Russell, J. L. Burch
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-10 (2020)
Various types of plasma waves are generated around electron diffusion regions (EDRs). Here the authors show electron Bernstein waves (EBWs), at the electron-scale boundary of the Hall current reversal near EDR, are sufficiently strong to diffuse elec
Externí odkaz:
https://doaj.org/article/e3975f2c57c342b79a8fb72f9c6fd91f