Zobrazeno 1 - 10
of 180
pro vyhledávání: '"Maha Ashour-Abdalla"'
Autor:
Rongxin Tang, Xiaohua Deng, Meng Zhou, Xiaojun Xu, Maha Ashour-Abdalla, Y. Pang, Huishan Fu, Giovanni Lapenta, Raymond J. Walker, Shiyong Huang
Publikováno v:
Journal of Geophysical Research: Space Physics. 122:9513-9520
Study of magnetic reconnection has been focused on two-dimensional geometry in the past decades, whereas three-dimensional structures and dynamics of reconnection X-line are poorly understood. In this paper, we report Cluster multi-spacecraft observa
Autor:
Maha Ashour-Abdalla, Mostafa El-Alaoui, Raymond J. Walker, Jean Berchem, Giovanni Lapenta, Meng Zhou, Haoming Liang, Melvyn L. Goldstein
Publikováno v:
Geophysical Research Letters. 43:6005-6011
A historic challenge to understanding geomagnetic activity is determining where in Earth's magnetotail magnetic energy is converted into particle energy and heat by magnetic reconnection. Key to unravel this fundamental process is in determining the
Autor:
Benoit Lavraud, P. A. Lindqvist, Paul Cassak, Julia E. Stawarz, John C. Dorelli, Levon A. Avanov, David M. Malaspina, James L. Burch, K. A. Goodrich, Christopher T. Russell, O. Le Contel, Martin V. Goldman, Yuri V. Khotyaintsev, Steven J. Schwartz, T. D. Phan, Matthew R. Argall, Mats André, L. J. Chen, Roy B. Torbert, Maha Ashour-Abdalla, Robert J. Strangeway, Michael Shay, Barbara L. Giles, Alessandro Retinò, Rumi Nakamura, Frederick Wilder, David Newman, Craig J. Pollock, A. P. Sturner, Maria Usanova, Michael Hesse, James Drake, Marit Øieroset, Justin Holmes, Robert E. Ergun, Jonathan Eastwood, Stefan Eriksson, Meng Zhou
Publikováno v:
Geophysical Research Letters. 43:5626-5634
We report observations from the Magnetospheric Multiscale satellites of large-amplitude, parallel, electrostatic waves associated with magnetic reconnection at the Earth's magnetopause. The observe ...
Publikováno v:
Journal of Geophysical Research: Space Physics. 121:1148-1166
Spacecraft observations near a magnetotail X line show that oxygen (O+) ions are minor species during nonstorm substorms, but they can become major species during some of the storm time substorms. Dipolarization fronts (DFs), which are characterized
Publikováno v:
Geophysical Research Letters. 43:515-524
Ion heating during a substorm on 15 February 2008, starting at 0348 UT, is studied with a new approach recently described in Ashour-Abdalla et al. (2015). The general conditions of the magnetotail are obtained from a global magnetohydrodynamic (MHD)
Publikováno v:
Geophysical Research Letters. 41:5717-5726
Ion energization in the magnetotail during substorms is examined by simulating a modest substorm event that occurred on 7 February 2009. The simulation scheme combines global magnetohydrodynamic (MHD) modeling of the magnetosphere driven by realistic
Autor:
Robert Richard, Maha Ashour-Abdalla, Xiaohua Deng, Zhigang Yuan, Mostafa El-Alaoui, Meng Zhou, Song Fu, Raymond Walker
Publikováno v:
Science China Earth Sciences. 57:2543-2551
We report where and how ions are accelerated in the proximity of earthward propagating dipolarization fronts (DFs) in the magnetotail during a magnetospheric substorm on February 15, 2008. Two DFs were observed by multiple THEMIS spacecraft in the ne
Autor:
Mostafa El-Alaoui, Robert L. Richard, Raymond J. Walker, David Schriver, Maha Ashour-Abdalla, Haoming Liang
Publikováno v:
Journal of Geophysical Research: Space Physics. 119:5382-5400
Although energetic particle injections during substorms have been observed near geosynchronous orbit since the late 1960s, how the injected particles are accelerated during a substorm is still not fully understood. Studies show that injections are as
Autor:
Binbin Ni, Maha Ashour-Abdalla, Y. Pang, Zhigang Yuan, Yukitoshi Nishimura, Xiaohua Deng, Meng Zhou, Huimin Li, Shiyong Huang
Publikováno v:
Journal of Geophysical Research: Space Physics. 119:4335-4347
Various plasma waves have been observed in the vicinity of dipolarization fronts (DFs) and the rarefaction regions behind them. It was suggested that these waves not only play crucial roles in regulating particle kinetics at the DFs but also may pote
Publikováno v:
Journal of Geophysical Research: Space Physics. 119:2484-2493
We present Cluster observations of wave-particle interactions during an earthward propagating dipolarization front (DF) and associated fast plasma bulk flows detected at the central current sheet in Earth's magnetotail. During this period, flux tubes