Results 21 to 30 of about 19,278 (241)

Redefining flux ropes in heliophysics

Frontiers in Astronomy and Space Sciences, 2023
Magnetic flux ropes manifest as twisted bundles of magnetic field lines. They carry significant amounts of solar mass in the heliosphere. This paper underlines the need to advance our understanding of the fundamental physics of heliospheric flux ropes ...
Teresa Nieves-Chinchilla, Sanchita Pal, Sanchita Pal, Tarik M. Salman, Tarik M. Salman, Fernando Carcaboso, Fernando Carcaboso, Silvina E. Guidoni, Silvina E. Guidoni, Hebe Cremades, Ayris Narock, Ayris Narock, Laura A. Balmaceda, Laura A. Balmaceda, Benjamin J. Lynch, Nada Al-Haddad, Laura Rodríguez-García, Thomas W. Narock, Luiz F. G. Dos Santos, Florian Regnault, Christina Kay, Christina Kay, Réka M. Winslow, Erika Palmerio, Emma E. Davies, Camilla Scolini, Andreas J. Weiss, Nathalia Alzate, Nathalia Alzate, Mariana Jeunon, Mariana Jeunon, Roger Pujadas, Roger Pujadas   +32 more
doaj   +1 more source

Plasma Dynamics in Low-Electron-Beta Environments

Frontiers in Astronomy and Space Sciences, 2021
Recent in situ measurements by the MMS and Parker Solar Probe missions bring interest to small-scale plasma dynamics (waves, turbulence, magnetic reconnection) in regions where the electron thermal energy is smaller than the magnetic one.
Stanislav Boldyrev, Stanislav Boldyrev, Nuno F. Loureiro, Vadim Roytershteyn   +3 more
doaj   +1 more source

Solar energetic particle time series analysis with Python

Frontiers in Astronomy and Space Sciences, 2022
Solar Energetic Particles (SEPs) are charged particles accelerated within the solar atmosphere or the interplanetary space by explosive phenomena such as solar flares or Coronal Mass Ejections (CMEs). Once injected into the interplanetary space, they can
Christian Palmroos, Jan Gieseler, Nina Dresing, Diana E. Morosan, Eleanna Asvestari, Aleksi Yli-Laurila, Daniel J. Price, Saku Valkila, Rami Vainio   +8 more
doaj   +1 more source

Extracting Inner‐Heliosphere Solar Wind Speed Information From Heliospheric Imager Observations [PDF]

Space Weather, 2019
AbstractWe present evidence that variability in the STEREO‐A Heliospheric Imager (HI) data is correlated with in situ solar wind speed estimates from WIND, STEREO‐A, and STEREO‐B. For 2008–2012, we compute the variability in HI differenced images in a plane‐of‐sky shell between 20 to 22.5 solar radii and, for a range of position angles, compare daily ...
L. A. Barnard, M. J. Owens, C. J. Scott, S. R. Jones   +3 more
openaire   +2 more sources

Exploring the Properties of the Electron Strahl at 1 AU as an Indicator of the Quality of the Magnetic Connection Between the Earth and the Sun

Frontiers in Astronomy and Space Sciences, 2021
In this report some properties of the electron strahl at 1 AU are examined to assess the strahl at 272 eV as an indicator of the quality of the magnetic connection of the near-Earth solar wind to the Sun.
Joseph E. Borovsky
doaj   +1 more source

Expansion of magnetic clouds in the outer heliosphere [PDF]

, 2012
A large amount of magnetized plasma is frequently ejected from the Sun as coronal mass ejections (CMEs). Some of these ejections are detected in the solar wind as magnetic clouds (MCs) that have flux rope signatures.
A. M. Gulisano, Balogh, Bame, Bothmer, Cane, Cane, Chen, Dasso, Dasso, Dasso, Du, Démoulin, Démoulin, Démoulin, Farrugia, Fränz, Funsten, Gazis, Gosling, Gulisano, Gulisano, Klein, Kumar, L. Rodriguez, Leitner, Lepping, Liu, Lopez, Low, Lugaz, Lugaz, Nakwacki, P. Démoulin, Richardson, Rodriguez, Rust, S. Dasso, Shimazu, St. Cyr, Steed, Tsurutani, Wang, Webb, Xiong, Xiong, Xiong   +45 more
core   +4 more sources

Evolving outer heliosphere: Large-scale stability and time variations observed by the Interstellar Boundary Explorer [PDF]

, 2010
The first all-sky maps of Energetic Neutral Atoms (ENAs) from the Interstellar Boundary Explorer (IBEX) exhibited smoothly varying, globally distributed flux and a narrow ribbon of enhanced ENA emissions.
Bzowski, M., Crew, G. B., Dayeh, M. A., DeMajistre, R., Frisch, P., Funsten, H. O., Fuselier, S. A., Gruntman, M., Janzen, P., Kubiak, M. A., Livadiotis, G, McComas, D. J., Moebius, Eberhard, Reisenfeld, D. B., Schwadron, Nathan A.   +14 more
core   +2 more sources

The long-term variability of cosmic ray protons in the heliosphere: A modeling approach

Journal of Advanced Research, 2013
Galactic cosmic rays are charged particles created in our galaxy and beyond. They propagate through interstellar space to eventually reach the heliosphere and Earth. Their transport in the heliosphere is subjected to four modulation processes: diffusion,
M.S. Potgieter, N. Mwiinga, S.E.S. Ferreira, R. Manuel, D.C. Ndiitwani   +4 more
doaj   +1 more source

Improving Predictions of High‐Latitude Coronal Mass Ejections Throughout the Heliosphere

Space Weather, 2020
Predictions of the impact of coronal mass ejections (CMEs) in the heliosphere mostly rely on cone CME models, whose performances are optimized for locations in the ecliptic plane and at 1 AU (e.g., at Earth).
C. Scolini, E. Chané, J. Pomoell, L. Rodriguez, S. Poedts   +4 more
doaj   +1 more source

Heliospheric plasma sheets [PDF]

Journal of Geophysical Research: Space Physics, 2004
As a high‐beta feature on scales of hours or less, the heliospheric plasma sheet (HPS) encasing the heliospheric current sheet shows a high degree of variability. A study of 52 sector boundaries identified in electron pitch angle spectrograms in Wind data from 1995 reveals that only half concur with both high‐beta plasma and current sheets, as required
Crooker, N. U., Huang, Chia-Lin L., Lamassa, S. M., Larson, D. E., Kahler, S. W., Spence, Harlan E.   +5 more
openaire   +2 more sources