Results 21 to 30 of about 27,056 (231)

The Role of Electrons and Helium Atoms in Global Modeling of the Heliosphere

Astrophysical Journal, 2023
We present a new three-dimensional, MHD-plasma/kinetic-neutrals model of the solar wind (SW) interaction with the local interstellar medium (LISM), which self-consistently includes neutral hydrogen and helium atoms.
F. Fraternale, N. Pogorelov, R. K. Bera
semanticscholar   +1 more source

Theory of Cosmic Ray Transport in the Heliosphere

Space Science Reviews, 2022
Modelling the transport of cosmic rays (CRs) in the heliosphere represents a global challenge in the field of heliophysics, in that such a study, if it were to be performed from first principles, requires the careful modelling of both large scale ...
N. E. Engelbrecht, F. Effenberger, V. Florinski, M. Potgieter, D. Ruffolo, R. Chhiber, A. Usmanov, J. Rankin, P. L. Els   +8 more
semanticscholar   +1 more source

The Structure of the Global Heliosphere as Seen by In-Situ Ions from the Voyagers and Remotely Sensed ENAs from Cassini

Space Science Reviews, 2022
The exploration of interplanetary space and our solar bubble, the heliosphere, has made a big leap over the past two decades, due to the path-breaking observations of the two Voyager spacecraft, launched more than 44 years ago. Their in-situ particle and
K. Dialynas, S. Krimigis, R. Decker, M. Hill, D. Mitchell, K. Hsieh, M. Hilchenbach, A. Czechowski   +7 more
semanticscholar   +1 more source

Anisotropy of Solar Wind Turbulence in the Inner Heliosphere at Kinetic Scales: PSP Observations [PDF]

, 2021
The anisotropy of solar wind turbulence is a critical issue in understanding the physics of energy transfer between scales and energy conversion between fields and particles in the heliosphere.
D. Duan, Jiansen He, T. Bowen, Lloyd D. Woodham, Tieyan Wang, C. Chen, A. Mallet, S. Bale   +7 more
semanticscholar   +1 more source

The Ion Transition Range of Solar Wind Turbulence in the Inner Heliosphere: Parker Solar Probe Observations [PDF]

Astrophysical Journal Letters, 2021
The scaling of the turbulent spectra provides a key measurement that allows us to discriminate between different theoretical predictions of turbulence.
Shiyong Huang, F. Sahraoui, Nahuel Andrés, L. Hadid, Z. Yuan, Jiansen He, Jinsong Zhao, S. Galtier, J. Zhang, Xin-fa Deng, K. Jiang, L. Yu, S. B. Xu, Q. Xiong, Y. Y. Wei, T. D. D. Wit, S. Bale, J. Kasper   +17 more
semanticscholar   +1 more source

First High-resolution Observations of Interstellar Pickup Ion Mediated Shocks in the Outer Heliosphere

Astrophysical Journal, 2022
This study reports the first high-time-resolution observations of interstellar pickup ions (PUIs) in the outer heliosphere, including the first high-resolution observations of PUIs mediating shocks collected anywhere.
D. McComas, B. Shrestha, P. Swaczyna, J. Rankin, S. Weidner, E. Zirnstein, H. Elliott, K. Singer, J. Spencer, S. Stern, H. Weaver   +10 more
semanticscholar   +1 more source

Evolution of Switchbacks in the Inner Heliosphere [PDF]

Astrophysical Journal Letters, 2021
We analyze magnetic field data from the first six encounters of Parker Solar Probe, three Helios fast streams and two Ulysses south polar passes covering heliocentric distances 0.1 ≲ R ≲ 3 au. We use this data set to statistically determine the evolution
A. Tenerani, Nikos Sioulas, L. Matteini, O. Panasenco, C. Shi, M. Velli   +5 more
semanticscholar   +1 more source

Interstellar Neutrals, Pickup Ions, and Energetic Neutral Atoms Throughout the Heliosphere: Present Theory and Modeling Overview

Space Science Reviews, 2022
Interstellar neutrals (ISNs), pick-up ions (PUIs), and energetic neutral atoms (ENAs) are fundamental constituents of the heliosphere and its interaction with the neighboring interstellar medium.
J. Sokół, H. Kucharek, I. Baliukin, H. Fahr, V. Izmodenov, M. Kornbleuth, P. Mostafavi, M. Opher, Jeewoo Park, N. Pogorelov, P. Quinn, Charles W. Smith, G. Zank, Ming Zhang   +13 more
semanticscholar   +1 more source

The Solar Wind with Hydrogen Ion Exchange and Large-scale Dynamics (SHIELD) Code: A Self-consistent Kinetic–Magnetohydrodynamic Model of the Outer Heliosphere

Astrophysical Journal, 2022
Neutral hydrogen has been shown to greatly impact the plasma flow in the heliosphere and the location of the heliospheric boundaries. We present the results of the Solar Wind with Hydrogen Ion Exchange and Large-scale Dynamics (SHIELD) model, a new, self-
A. Michael, M. Opher, G. Tóth, V. Tenishev, D. Borovikov   +4 more
semanticscholar   +1 more source

MHD Turbulent Power Anisotropy in the Inner Heliosphere

Astrophysical Journal, 2022
We study anisotropic magnetohydrodynamic (MHD) turbulence in the slow solar wind measured by Parker Solar Probe (PSP) and Solar Orbiter (SolO) during its first orbit from the perspective of variance anisotropy and correlation anisotropy.
L. Adhikari, G. Zank, L.-L. Zhao, D. Telloni   +3 more
semanticscholar   +1 more source