Results 61 to 70 of about 10,278 (236)

The Passage of the Solar System through the Edge of the Local Bubble

The Astrophysical Journal
The Sun moves through the interstellar medium (ISM) at a velocity of ∼19 pc Myr ^−1 , making the conditions outside the solar system vary with time over millions of years.
Merav Opher, Abraham Loeb, Catherine Zucker, Alyssa Goodman, Ralf Konietzka, Alexandra Z. Worden, Evan P. Economo, Jesse A. Miller, João Alves, Jonathan Grone, Marc Kornbleuth, J. E. G. Peek, Michael M. Foley   +12 more
doaj   +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

Soft X‐Ray Emission From Saturn's Magnetosheath Part I: 3D Modeling From MHD Data

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Saturn's magnetosheath hosts a mixed population of water‐group neutrals and solar wind plasma. We present a 3‐D model of soft X‐ray emission by ion‐neutral charge exchange in the near‐equatorial magnetosheath. The model employs MHD simulation data of plasma properties at Saturn, Enceladus‐genic neutral populations extrapolated from existing ...
P. C. Rogan, L. C. Ray, D. Naylor, W. R. Dunn, X. Jia, H. T. Smith, A. Sulaiman   +6 more
wiley   +1 more source

Validating a Non‐Conventional Method for Expansion of Coronal Mass Ejections (CMEs) and Investigating the Evolution of a CME Substructures Using Solar Orbiter and Wind Observations

Space Weather, Volume 24, Issue 5, May 2026.
Abstract We present a validation of our recently proposed non‐conventional method, Constant Acceleration Accounted Perspective (CAAP), for estimating the instantaneous expansion speed of coronal mass ejection (CMEs), even when only single‐point in situ observations are available. This validation is enabled by the radial alignment of Solar Orbiter (SolO)
Anjali Agarwal, Wageesh Mishra, Mathew J. Owens, Tanja Amerstorfer   +3 more
wiley   +1 more source

Interstellar Neutral Hydrogen in the Heliosphere: New Horizons Observations in the Context of Models

The Astrophysical Journal Letters
Interstellar neutral (ISN) hydrogen is the most abundant species in the outer heliosheath and the very local interstellar medium (VLISM). Charge-exchange collisions in the outer heliosheath result in filtration, reducing the ISN hydrogen density inside ...
P. Swaczyna, M. Bzowski, K. Dialynas, L. Dyke, F. Fraternale, A. Galli, J. Heerikhuisen, M. Z. Kornbleuth, D. Koutroumpa, I. Kowalska-Leszczyńska, M. A. Kubiak, A. T. Michael, H.-R. Müller, M. Opher, F. Rahmanifard   +14 more
doaj   +1 more source

Time Dependence of 50–250 MeV Galactic Cosmic-Ray Protons between Solar Cycles 24 and 25, Measured by the High-energy Particle Detector on board the CSES-01 Satellite

The Astrophysical Journal Letters, 2023
Time-dependent energy spectra of galactic cosmic rays (GCRs) carry crucial information regarding their origin and propagation throughout the interstellar environment.
M. Martucci, R. Ammendola, D. Badoni, S. Bartocci, R. Battiston, S. Beolè, W. J. Burger, D. Campana, G. Castellini, P. Cipollone, S. Coli, L. Conti, A. Contin, M. Cristoforetti, G. D’Angelo, C. De Donato, C. De Santis, A. Di Luca, F. M. Follega, G. Gebbia, R. Iuppa, A. Lega, M. Lolli, N. Marcelli, G. Masciantonio, M. Mergè, M. Mese, C. Neubüser, F. Nozzoli, A. Oliva, G. Osteria, L. Pacini, F. Palma, F. Palmonari, B. Panico, A. Parmentier, S. Perciballi, F. Perfetto, P. Picozza, M. Pozzato, G. M. Rebustini, E. Ricci, M. Ricci, S. B. Ricciarini, U. Savino, Z. Sahnoun, V. Scotti, A. Sotgiu, R. Sparvoli, P. Ubertini, V. Vilona, V. Vitale, S. Zoffoli, P. Zuccon, O. P. M. Aslam, M. D. Ngobeni, M. S. Potgieter   +56 more
doaj   +1 more source

A Robust Empirical Relationship Between Speed and Turbulence Energy in the Near‐Earth Solar Wind

Space Weather, Volume 24, Issue 5, May 2026.
Abstract The connection between turbulence and solar‐wind acceleration, long known in space physics, is further developed in this study by establishing a robust empirical law that relates the bulk‐flow speed to the magnetohydrodynamic‐scale fluctuation energy in the plasma. The model is based on analysis of 25 years of near‐Earth observations by NASA's
Rohit Chhiber, Yanwen Wang, Manuel E. Cuesta, Jiaming Wang, Sohom Roy   +4 more
wiley   +1 more source

Earth-affecting solar transients: a review of progresses in solar cycle 24

Progress in Earth and Planetary Science, 2021
This review article summarizes the advancement in the studies of Earth-affecting solar transients in the last decade that encompasses most of solar cycle 24. It is a part of the effort of the International Study of Earth-affecting Solar Transients (ISEST)
Jie Zhang, Manuela Temmer, Nat Gopalswamy, Olga Malandraki, Nariaki V. Nitta, Spiros Patsourakos, Fang Shen, Bojan Vršnak, Yuming Wang, David Webb, Mihir I. Desai, Karin Dissauer, Nina Dresing, Mateja Dumbović, Xueshang Feng, Stephan G. Heinemann, Monica Laurenza, Noé Lugaz, Bin Zhuang   +18 more
doaj   +1 more source

Modeling the Detectability of Energetic Heliospheric Ions at Pluto During the New Horizons Flyby

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract We investigate the detectability of heliospheric helium ions at energies up to 100 keV by the New Horizons (NH) spacecraft during its flyby through Pluto's induced magnetosphere. The Pluto Energetic Particle Spectrometer Science Investigation energetic ion detector observed a reduction in their flux by an order of magnitude as the spacecraft ...
Randall T. Ruch, Sven Simon, Peter Kollmann, C. Michael Haynes   +3 more
wiley   +1 more source

Spatial gradients of GCR protons in the inner heliosphere derived from Ulysses COSPIN/KET and PAMELA measurements

, 2016
During the transition from solar cycle 23 to 24 from 2006 to 2009, the Sun was in an unusual solar minimum with very low activity over a long period. These exceptional conditions included a very low interplanetary magnetic field (IMF) strength and a high
Gieseler, Jan, Heber, Bernd
core   +1 more source