Results 81 to 90 of about 2,470 (205)

Heliospheric current sheet inclinations at Venus and Earth [PDF]

Annales Geophysicae, 1999
We investigate the inclinations of heliospheric current sheet at two sites in interplanetary space, which are generated from the same solar source.
G. Ma, G. Ma, K. Marubashi, T. Maruyama
doaj   +1 more source

Oscillation of solar radio emission at coronal acoustic cut-off frequency

, 2017
Recent SECCHI COR2 observations on board STEREO-A spacecraft have detected density structures at a distance of 2.5--15~R propagating with periodicity of about 90~minutes.
Brazhenko, A. I., Hanslmeier, A., Melnik, V. N., Panchenko, M., Pylaev, O. S., Zaqarashvili, T. V.   +5 more
core   +1 more source

Empirical Functions for Highly Charged Ion Abundances in Solar Wind Charge Exchange Models: Addressing Post‐2011 ACE Data Limitations

Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.
Abstract Upcoming imaging missions—NASA's LEXI and ESA/CAS's SMILE—will target solar wind charge exchange X‐ray (SWCX) emission from Earth's magnetosheath. This emission is generated by highly charged ions colliding with neutrals in Earth's exosphere.
D. Koutroumpa, K. D. Kuntz, J. A. Carter, J. Raines, S. T. Lepri, L. Zhao   +5 more
wiley   +1 more source

Asymmetry in the Ring Current During Geomagnetic Disturbances

Journal of Geophysical Research: Space Physics, Volume 130, Issue 3, March 2025.
Abstract Geomagnetic disturbances (GMDs) are defined as rapid changes in the magnetic field of the Earth that can lead to geomagnetically induced currents (GICs). Recent studies have shown that there are two main populations of GMDs, one in the pre‐midnight sector and one in the dawn sector.
G. E. Bower, S. E. Milan, S. Imber, A. Schillings, A. Fleetham, C. Beggan, J. W. Gjerloev   +6 more
wiley   +1 more source

Spectroscopic Observations of the Solar Corona during the 2017 August 21 Total Solar Eclipse: Comparison of Spectral Line Widths and Doppler Shifts between Open and Closed Magnetic Structures

The Astrophysical Journal
The spectroscopic observations presented here were acquired during the 2017 August 21 total solar eclipse (TSE) with a three-channel partially multiplexed imaging spectrometer operating at extremely high orders (>50). The 4 R _⊙ extent of the slit in the
Yingjie Zhu, Shadia R. Habbal, Adalbert Ding, Bryan Yamashiro, Enrico Landi, Benjamin Boe, Sage Constantinou, Michael Nassir   +7 more
doaj   +1 more source

Auroral Energy Deposition and Conductance During the 2013 St. Patrick's Day Storm: Meso‐Scale Contributions

Journal of Geophysical Research: Space Physics, Volume 130, Issue 2, February 2025.
Abstract Geomagnetic storms transfer massive amounts of energy from the sun to geospace. Some of that energy is dissipated in the ionosphere as energetic particles precipitate and transfer their energy to the atmosphere, creating the aurora. We used the Time History of Events and Macroscale Interactions during Substorms (THEMIS) mosaic of all‐sky ...
Christine Gabrielse, Y. Nishimura, J. H. Hecht, M. W. Chen, S. R. Kaeppler, D. M. Gillies, Y. Deng, E. Spanswick, E. Donovan, J. S. Evans, L. R. Lyons   +10 more
wiley   +1 more source

Plasmoids in Reconnecting Current Sheets: Solar and Terrestrial Contexts Compared

, 2008
Magnetic reconnection plays a crucial role in violent energy conversion occurring in the environments of high electrical conductivity, such as the solar atmosphere, magnetosphere, and fusion devices.
Ambrosiano, Angelopoulos, Asai, Aschwanden, Baker, Baker, Baker, Baker, Baumjohann, Baumjohann, Bemporad, Bhattacharjee, Biernat, Birn, Birn, Birn, Birn, Birn, Blanchard, Burlaga, Burlaga, C. J. Farrugia, Carmichael, Cassak, Cassak, Ciaravella, Coleman, Coppi, Cowley, Cranmer, Dmitruk, Dmitruk, Drake, Dungey, Dungey, Dungey, Démoulin, Eastwood, Eastwood, Einaudi, Einaudi, Elphic, Emslie, Eriksson, Farrugia, Farrugia, Farrugia, Farrugia, Farrugia, Feldman, Feldman, Feldman, Fisk, Forbes, Forbes, Forbes, Forbes, Forbes, Forbes, Fu, Furth, Goldstein, Gosling, Gosling, Gosling, Hada, Hesse, Hesse, Hesse, Ho, Hollweg, Hones, Hones, Hones, Huang, Innes, Innes, J. Lin, Kinney, Klein, Klimchuk, Ko, Kohl, Kohl, Kopp, Krauss-Varban, Lapenta, Lazarian, Leamon, Lee, Lee, Lee, Lee, Lepping, Lin, Lin, Lin, Lin, Lin, Lin, Lin, Lin, Lin, Litvinenko, Loureiro, Lundquist, Markovskii, Martens, Matthaeus, McKenzie, McKenzie, McPherron, McPherron, Mininni, Moldwin, Moldwin, Moldwin, Mullan, Murata, Nagai, Nakamura, Ness, Nishida, Nishida, Parker, Parker, Paschmann, Paschmann, Paschmann, Petschek, Phan, Pneuman, Pneuman, Poletto, Priest, Priest, Priest, Priest, Pritchett, Pritchett, Pudovkin, Qiu, Raymond, Raymond, Reeves, Rentinò, Rijnbeek, Riley, Russell, S. R. Cranmer, Sandholt, Schindler, Schlüter, Semenov, Semenov, Seon, Sergeev, Shay, Shay, Sheeley, Sheeley, Sheeley, Sheeley, Shodhun, Sibeck, Slavin, Slavin, Slavin, Slavin, Slavin, Sonnerup, Sonnerup, Sonnerup, Strachan, Strauss, Sui, Sui, Sundaram, Sweet, Sweet, Tamano, Tu, Uzdensky, Vaivads, Vaivads, Vasyliunas, Wang, Wang, Webb, Wood, Wu, Xiao, Yang, Yokoyama, Yokoyama, Øieroset, Øieroset, Švestka, Švestka, Švestka   +199 more
core   +1 more source

Observations of Localized Horizontal Geomagnetic Field Variations Associated With a Magnetospheric Fast Flow Burst During a Magnetotail Reconnection Event Detected by the THEMIS Spacecraft

Journal of Geophysical Research: Space Physics, Volume 130, Issue 1, January 2025.
Abstract On 20 December 2015, three Time History of Events and Macroscale Interactions during Substorms (THEMIS) spacecraft detected a nightside magnetotail reconnection event in the early main phase of a major geomagnetic storm. The spacecraft (P5, P4, and P3) had their footprints located over North America near the Gillam ground magnetometer station ...
Chigomezyo M. Ngwira, Yukitoshi Nishimura, James M. Weygand, Mark J. Engebretson, Antti Pulkkinnen, Peter W. Schuck   +5 more
wiley   +1 more source

Production of Sunspots and Their Effects on the Corona and Solar Wind: Insights from a New 3D Flux-Transport Dynamo Model

Frontiers in Astronomy and Space Sciences, 2018
We present a three-dimensional numerical model for the generation and evolution of the magnetic field in the solar convection zone, in which sunspots are produced and contribute to the cyclic reversal of the large-scale magnetic field. We then assess the
Rohit Kumar, Laurène Jouve, Rui F. Pinto, Alexis P. Rouillard   +3 more
doaj   +1 more source

Deflection of coronal rays by remote CMEs: shock wave or magnetic pressure?

, 2010
We analyze five events of the interaction of coronal mass ejections (CMEs) with the remote coronal rays located up to 90^\circ away from the CME as observed by the SOHO/LASCO C2 coronagraph.
A. Ajabshirizadeh, A. K. Srivastava, B. Holst van der, B.P. Filippov, B.P. Filippov, Boris Filippov, D. Tripathi, D.G. Sime, G.W. Pneuman, J. Lin, L.D. Landau, L.D. Landau, N.R. Sheeley Jr., R.M. Evans, R.S. Steinolfson, T.G. Forbes, Y. Liu   +16 more
core   +1 more source