Results 111 to 120 of about 27,056 (231)

Anisotropy of TeV Cosmic Rays and the Outer Heliospheric Boundaries

, 2012
Cosmic rays in the energy range from about 10's GeV to several 100's TeV are observed on Earth with an energy-dependent anisotropy of order 0.01-0.1%, and a consistent topology that appears to significantly change at higher energy.
Desiati, P., Lazarian, A.
core   +1 more source

The evolution of coronal mass ejections in the inner heliosphere: Implementing the spheromak model with EUHFORIA

Astronomy & Astrophysics, 2019
Aims. We introduce a new model for coronal mass ejections (CMEs) that has been implemented in the magnetohydrodynamics (MHD) inner heliosphere model EUHFORIA.
C. Verbeke, J. Pomoell, S. Poedts
semanticscholar   +1 more source

Energy‐Dependent SEP Fe/O Abundances During the May 2024 Superstorm

Space Weather, Volume 23, Issue 11, November 2025.
Abstract During mid‐May 2024, active region (AR) 13664 produced a series of M‐ and X‐class flares along with several coronal mass ejections (CMEs) that resulted in exceptionally strong aurora at Earth. This study presents in situ solar energetic particle (SEP) ion composition data from Solar Terrestrial Relations Observatory Ahead (STA), Advanced ...
G. D. Muro, C. M. S. Cohen, Z. Xu, R. A. Leske, A. C. Cummings, S. Bale, G. D. Berland, E. R. Christian, M. E. Cuesta, M. I. Desai, F. Fraschetti, J. Giacalone, L. Y. Khoo, A. Labrador, D. J. McComas, J. G. Mitchell, M. Pulupa, N. A. Schwadron, M. M. Shen   +18 more
wiley   +1 more source

Spatiotemporal Variations in Surface Air 7Be Concentrations Over the Antarctic Regions of the Indian Sector

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 20, 28 October 2025.
Abstract This study examined spatiotemporal variations in Beryllium‐7 (7Be) concentrations measured in surface air in high‐latitude regions of the Indian sector of the Southern Ocean, including two Japanese coastal stations. The sites included Syowa Station (69°00′S, 39°35′E) and site S17 (69°02′S, 40°05′E) on the coastal Antarctic ice sheet ...
Naohiko Hirasawa, Taku Nakamura, Miyoko Miwa, Tetsuro Ojio, Kyohei Yamada, Shigeki Tasaka   +5 more
wiley   +1 more source

Hydrogen wall and heliosheath Lyman-alpha absorption toward nearby stars: possible constraints on the heliospheric interface plasma flow

, 2002
In this paper, we study heliospheric Ly-$\alpha$ absorption toward nearby stars in different lines of sight. We use the Baranov-Malama model of the solar wind interaction with a two-component (charged component and H atoms) interstellar medium ...
Baranov, Baranov, Baranov, Baranov, Baranov, Baranov, Bertaux, Bertin, Bertin, Blum, Costa, Dalaudier, Dring, Fahr, Fichtner, Gruntman, Hebrard, Izmodenov, Izmodenov, Izmodenov, Izmodenov, Lallement, Lallement, Linsky, Linsky, Lipatov, Malama, Müller, Müller, Parker, Patterson, Richardson, Thomas, Vlad Izmodenov, Wang, Weller, Williams, Witte, Wood, Wood, Wood, Wood, Wood, Zank   +43 more
core   +1 more source

Geoeffectivity of Solar Wind Heavy Ions

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract The influence of solar wind properties, such as the southward interplanetary magnetic field, on geomagnetic activity has been well established. However, the role of heavy ions (i.e., particles heavier than protons) in the solar wind on geomagnetic storms is not fully understood.
Chris Jia, Susan T. Lepri, Liang Zhao, Jim M. Raines, Daniel Welling, Jennifer A. Carter, Simona Nitti   +6 more
wiley   +1 more source

Three-dimensional Evolution of Solar Wind during Solar Cycles 22-24

, 2012
This paper presents the analysis of 3D evolution of solar wind density turbulence and speed at various levels of solar activity between solar cycles 22 and 24.
Abramenko, Basu, Coles, Kojima, Koutchmy, Lallement, Liu, Lo, Manoharan, Manoharan, Manoharan, Manoharan, Manoharan, Manoharan, Mewaldt, P. K. Manoharan, Readhead, Sheeley, Yashiro   +18 more
core   +1 more source

Solar energetic particles in the inner heliosphere: status and open questions

Philosophical Transactions of the Royal Society A, 2019
Solar energetic particle (SEP) events are related to both solar flares and coronal mass ejections (CMEs) and they present energy spectra that span from a few keV up to several GeV. A wealth of observations from widely distributed spacecraft have revealed
A. Anastasiadis, D. Lario, A. Papaioannou, A. Kouloumvakos, A. Vourlidas   +4 more
semanticscholar   +1 more source

Alfvénic Contribution From the Solar Wind to Magnetospheric Dynamics

Space Weather, Volume 23, Issue 10, October 2025.
Abstract This paper proposes for the first time a theoretical expression for the injection of energy from the solar wind into the ring current due to Alfvénic fluctuations. Using interplanetary and geomagnetic measurements, we select four case studies, validate our approach, and compute the parameters involved in the proposed expression.
E. Saiz, C. Cid
wiley   +1 more source

Heliosphere Lithograph [PDF]

, 2008
This lithograph introduces users to the fact that the Solar System has an interstellar boundary called the heliosphere. It includes an interactive activity.
Lindsay Bartolone
core