Results 11 to 20 of about 588 (209)

Propagation of large-scale solar wind events in the outer heliosphere from a numerical MHD simulation

Earth and Planetary Physics, 2021
Voyager 1 occasionally detected sudden jumps of the local interstellar magnetic field strength since its heliopause crossing in August 2012. These events were believed to be associated with outward propagating solar wind shocks originating in the inner ...
XiaoCheng Guo, YuCheng Zhou, Chi Wang, Ying D. Liu   +3 more
doaj   +2 more sources

Effects of Magnetic Boundary Layer on Galactic Cosmic Rays during the Heliopause Crossing for Voyager 2 [PDF]

The Astrophysical Journal
Voyager 2 crossed the heliopause in 2018 and observed a small-amplitude modulation of galactic cosmic rays beyond the heliopause, within a boundary layer approximately 0.57 au thick. Prior to this, it detected a similar boundary layer for both the cosmic
Xiaocheng Guo, Yu Zeng, Chi Wang
doaj   +2 more sources

Numerical investigation of hydrodynamic instabilities of the heliopause [PDF]

Journal of Geophysical Research: Space Physics, 1998
The heliopause is the interface between the solar wind plasma and the very local interstellar medium (VLISM) and manifests itself as a tangential discontinuity across which the flow velocity and the plasma density jump (except at the nose). Hydrodynamic instabilities of either the Rayleigh‐Taylor type or the Kelvin‐Helmholtz type will likely develop at
Chi Wang, John W. Belcher
openaire   +3 more sources

Cosmic ray anisotropies near the heliopause [PDF]

Astronomy & Astrophysics, 2014
Context. The Voyager 1 spacecraft became the first man-made probe to cross the heliopause into the local interstellar medium and measure the galactic environment, including charged particle intensities, in situ. Aims. We qualitatively explain the observed anisotropies of galactic and anomalous cosmic rays in the interstellar medium. Methods.
R. D. Strauss, H. Fichtner
openaire   +3 more sources

The Science with the Interstellar Heliopause Probe [PDF]

Astrophysics and Space Sciences Transactions, 2006
After the exciting in-situ observations of the termination shock and the entry of the Voyager 1 spacecraft in the heliosheath, there is a growing awareness of the significance of the physics of the outer heliosphere. Its understanding helps to clarify the structure of our immediate interstellar neighbourhood, contributes to the clarification of ...
Fichtner, H., Heber, B., Leipold, M.
openaire   +5 more sources

Evidence of a Thick Heliopause Boundary Layer Resulting from Active Magnetic Reconnection with the Interstellar Medium [PDF]

The Astrophysical Journal
Voyager 1 and 2 data from the vicinity of the heliopause and very local interstellar medium are reexamined to better understand the confounding lack of rotation in the magnetic field ( B -field) across the heliopause observed by both Voyagers, despite ...
Drew L. Turner, Adam Michael, Elena Provornikova, Marc Kornbleuth, Merav Opher, Stefan Eriksson, Benoit Lavraud, Parisa Mostafavi, Matthew E. Hill, Pontus Brandt, Ian J. Cohen, Joseph Westlake, John D. Richardson, Nathan A. Schwadron, David J. McComas   +14 more
doaj   +3 more sources

The Lyman‐α Sky Background as Observed by New Horizons

Geophysical Research Letters, 2018
Recent observations of interplanetary medium atomic hydrogen Lyman‐α emission in the outer solar system, made with the Alice ultraviolet spectrograph on New Horizons, are presented.
G. Randall Gladstone, W. R. Pryor, S. Alan Stern, Kimberly Ennico, Catherine B. Olkin, John R. Spencer, Harold A. Weaver, Leslie A. Young, Fran Bagenal, Andrew F. Cheng, Nathaniel J. Cunningham, Heather A. Elliott, Thomas K. Greathouse, David P. Hinson, Joshua A. Kammer, Ivan R. Linscott, Joel Wm. Parker, Kurt D. Retherford, Andrew J. Steffl, Darrell F. Strobel, Michael E. Summers, Henry Throop, Maarten H. Versteeg, Michael W. Davis   +23 more
doaj   +2 more sources

Slowdown and Heating of Interstellar Neutral Helium by Elastic Collisions Beyond the Heliopause. [PDF]

Astrophys J Lett, 2021
Direct sampling of interstellar neutral (ISN) atoms close to the Sun enables studies of the very local interstellar medium (VLISM) around the heliosphere.
Swaczyna P, Rahmanifard F, Zirnstein EJ, McComas DJ, Heerikhuisen J.   +4 more
europepmc   +3 more sources

Voyager 2 Observations Near the Heliopause [PDF]

Journal of Physics: Conference Series, 2020
Abstract This paper discusses plasma characteristics in the heliosheath region before the heliopause (HP), at the HP, and in the very local interstellar medium (VLISM). The Voyager 2 (V2) HP was a sharp boundary where the radial plasma currents went to background levels.
Richardson, John D., Belcher, John W., Burlaga, Leonard F., Cummings, Alan C., Decker, Robert B., Opher, Merav, Stone, Edward C.   +6 more
openaire   +4 more sources

New Insights From Long-Term Measurements of Inner Belt Protons (10s of MeV) by SAMPEX, POES, Van Allen Probes, and Simulation Results. [PDF]

J Geophys Res Space Phys, 2020
Abstract The Solar, Anomalous, and Magnetospheric Particle Explorer (SAMPEX) mission provided long‐term measurements of 10s of megaelectron volt (MeV) inner belt (L < 2) protons (1992–2009) as did the Polar‐orbiting Operational Environmental Satellite‐18 (POES‐18, 2005 to present).
Li X, Xiang Z, Zhang K, Khoo L, Zhao H, Baker DN, Temerin MA.   +6 more
europepmc   +2 more sources