Results 21 to 30 of about 728 (195)

Turbulence, Waves, and Taylor’s Hypothesis for Heliosheath Observations

The Astrophysical Journal
Magnetic field fluctuations measured in the heliosheath by the Voyager spacecraft are often characterized as compressible, as indicated by a strong fluctuating component parallel to the mean magnetic field.
L.-L. Zhao, G. P. Zank, M. Opher, B. Zieger, H. Li, V. Florinski, L. Adhikari, X. Zhu, M. Nakanotani   +8 more
doaj   +3 more sources

Thermodynamics of the Inner Heliosheath

The Astrophysical Journal Supplement Series, 2022
Abstract We derive annual sky maps of the proton temperature in the inner heliosheath (IHS), and track their temporal evolution over the years 2009–2016 of Interstellar Boundary Explorer observations. Other associated thermodynamic parameters also determined are the density, kappa (the parameter that characterizes kappa distributions ...
G. Livadiotis, D. J. McComas, H. O. Funsten, N. A. Schwadron, J. R. Szalay, E. Zirnstein   +5 more
openaire   +2 more sources

Energetic Neutral Atom Fluxes from the Heliosheath: Constraints from in situ Measurements and Models [PDF]

, 2021
Voyager 2 observations throughout the heliosheath from the termination shock to the heliopause are used to normalize and constrain model pickup ion (PUI) fluxes.
Heerikhuisen, J., Elliott, H. A., Galli, A., Zirnstein, E. J., Starkey, M. J., McComas, D. J., Fuselier, S. A., Dialynas, K., Gomez, R. G., Schwadron, N. A., Kornbleuth, M. Z., Opher, M., Reisenfeld, D. B., Dayeh, M. A., Richardson, J. D.   +14 more
core   +1 more source

Transient heliosheath modulation [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
Voyager 1 has explored the solar wind-interstellar medium interaction region between the terminal shock and heliopause following the intensity distribution of galactic cosmic ray protons above 200 MeV energy. Before this component reached the galactic level at 121.7 AU, 4 episodes of rapid intensity change occured similar to the Forbush Decreases found
Quenby, JJ, Webber, WR
openaire   +3 more sources

The Impact of Pickup Ion Thermal Spread on Pickup Ion Ring-beam-driven Instabilities and Scattering in the Outer Heliosheath

The Astrophysical Journal, 2023
The present study investigates the unstable waves driven by the pickup ions of ring-beam distributions with various pickup angles and pickup ion temperatures in the outer heliosheath, using both linear instability analysis and hybrid simulations.
Ameneh Mousavi, Kaijun Liu, Sina Sadeghzadeh   +2 more
doaj   +1 more source

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

The 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. V. Pogorelov, R. K. Bera   +2 more
doaj   +1 more source

Modelling anomalous cosmic ray oxygen in the heliosheath [PDF]

, 2010
This paper discusses a numerical modulation model to describe anomalous cosmic ray acceleration and transport in the heliosheath, the portion of the heliosphere between the termination shock and the heliopause. The model is based on the well known Parker
Strauss, R.D., M. E. Hill, Potgieter, M.S., M. S. Potgieter, R. D. Strauss, Hill, M.E., S. E. S. Ferreira, Ferreira, S.E.S.   +7 more
core   +1 more source

The Effect of Angular Scattering Imposed by Charge Exchange and Elastic Collisions on Interstellar Neutral Hydrogen Atoms

The Astrophysical Journal, 2023
Angular scattering (AS) in charge exchange and elastic collisions between interstellar ions and neutral (ISN) atoms has been assumed to be negligible in previous studies.
F. Rahmanifard, P. Swaczyna, E. J. Zirnstein, J. Heerikhuisen, A. Galli, J. M. Sokół, N. A. Schwadron, E. Möbius, D. J. McComas, S. A. Fuselier   +9 more
doaj   +1 more source

Combined similar to 10 eV to similar to 344 MeV Particle Spectra and Pressures in the Heliosheath along the Voyager 2 Trajectory [PDF]

, 2020
We report a unique combination of ~10 eV to ~344 MeV in situ ion measurements from the Plasma Science (PLS), Low Energy Charged Particle (LECP), and Cosmic Ray Subsystem (CRS) experiments on the Voyager 2 (V2) spacecraft, and remotely sensed ~110 eV to ...
Roussos, Elias, Gkioulidou, M., Dayeh, Maher A., Fuselier, S., Decker, R., Galli, A., Cummings, A., Krimigis, Stamatios M., Mitchell, Donald G., Decker, Robert B., Richardson, J., Dayeh, M., Fuselier, Stephen A., Richardson, John D., Opher, Merav, Dialynas, K., Opher, M., Krimigis, S., Dialynas, Konstantinos, Galli, André, Mitchell, D., Cummings, Alan C., Gkioulidou, Matina, Roussos, E.   +23 more
core   +2 more sources

Interplanetary coronal mass ejection observed at STEREO‐A, Mars, comet 67P/Churyumov‐Gerasimenko, Saturn, and New Horizons en route to Pluto: Comparison of its Forbush decreases at 1.4, 3.1, and 9.9 AU

Journal of Geophysical Research: Space Physics, Volume 122, Issue 8, Page 7865-7890, August 2017., 2017
Abstract We discuss observations of the journey throughout the Solar System of a large interplanetary coronal mass ejection (ICME) that was ejected at the Sun on 14 October 2014. The ICME hit Mars on 17 October, as observed by the Mars Express, Mars Atmosphere and Volatile EvolutioN Mission (MAVEN), Mars Odyssey, and Mars Science Laboratory (MSL ...
O. Witasse, B. Sánchez‐Cano, M. L. Mays, P. Kajdič, H. Opgenoorth, H. A. Elliott, I. G. Richardson, I. Zouganelis, J. Zender, R. F. Wimmer‐Schweingruber, L. Turc, M. G. G. T. Taylor, E. Roussos, A. Rouillard, I. Richter, J. D. Richardson, R. Ramstad, G. Provan, A. Posner, J. J. Plaut, D. Odstrcil, H. Nilsson, P. Niemenen, S. E. Milan, K. Mandt, H. Lohf, M. Lester, J.‐P. Lebreton, E. Kuulkers, N. Krupp, C. Koenders, M. K. James, D. Intzekara, M. Holmstrom, D. M. Hassler, B. E. S. Hall, J. Guo, R. Goldstein, C. Goetz, K. H. Glassmeier, V. Génot, H. Evans, J. Espley, N. J. T. Edberg, M. Dougherty, S. W. H. Cowley, J. Burch, E. Behar, S. Barabash, D. J. Andrews, N. Altobelli   +50 more
wiley   +1 more source