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An analytic model of the heliosheath (HS) between the termination shock (TS) and the heliopause (HP) is developed in the limit in which the interstellar flow and magnetic field are neglected. The heliosphere in this limit is axisymmetric…

Solar and Stellar Astrophysics · Physics 2015-08-06 J. F. Drake , M. Swisdak , M. Opher

Voyager 1 has explored the solar wind-interstellar medium interaction region between the Terminal Shock and the Heliopause, following the intensity distribution of the shock accelerated anomalous component of cosmic rays in the MeV energy…

Solar and Stellar Astrophysics · Physics 2015-06-16 J. J. Quenby , W. R. Webber

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…

Solar and Stellar Astrophysics · Physics 2015-09-09 J. J. Quenby , W. R. Webber

The Voyager spacecraft is now approaching the edge of the solar system. Near the boundary between the solar system and the interstellar medium we find that an unstable ``jet-sheet'' forms. The jet-sheet oscillates up and down due to a…

Astrophysics · Physics 2009-11-07 M. Opher , P. C. Liewer , T. I. Gombosi , W. Manchester , D. L. DeZeeuw , I. Sokolov , G. Toth

To model the interaction between the solar wind and the interstellar wind, magnetic fields must be included. Recently Opher et al. 2003 found that, by including the solar magnetic field in a 3D high resolution simulation using the…

We study processes related to magnetic reconnection and plasma turbulence occurring in the presence of the heliopause (HP) and the heliospheric current sheet. It is shown that the interaction of plasmoids initiated by magnetic reconnection…

Solar and Stellar Astrophysics · Physics 2013-10-30 M. Strumik , A. Czechowski , S. Grzedzielski , W. M. Macek , R. Ratkiewicz

This paper summarizes the results obtained by the team "Heliosheath Processes and the Structure of the Heliopause: Modeling Energetic Particles, Cosmic Rays, and Magnetic Fields" supported by the International Space Science Institute in…

It is currently believed that the turbulent fluctuations pervade the outermost heliosphere. Turbulence, magnetic reconnection, and their link may be responsible for magnetic energy conversion in these regions. The governing mechanisms of…

After the termination shock (TS) crossing, the Voyager 2 spacecraft has been observing strong variations of the magnetic field and solar wind parameters in the heliosheath. Anomalous cosmic rays, electrons, and galactic cosmic rays present…

Solar and Stellar Astrophysics · Physics 2015-06-15 E. Provornikova , M. Opher , V. Izmodenov , G. Toth

The picture of the heliopause (HP) -- the boundary between the domains of the sun and the local interstellar medium (LISM) -- as a pristine interface with a large rotation in the magnetic field fails to describe recent Voyager 1 (V1)…

Solar and Stellar Astrophysics · Physics 2015-06-16 M. Swisdak , J. F. Drake , M. Opher

All the current global models of the heliosphere are based on the assumption that the magnetic field in the heliosheath, in the region close to the heliopause is laminar. We argue that in that region the heliospheric magnetic field is not…

Solar and Stellar Astrophysics · Physics 2015-05-27 M. Opher , J. F. Drake , M. Swisdak , K. M. Schoeffler , J. D. Richardson , R. B. Decker , G. Toth

There was an expectation that the magnetic field direction would rotate dramatically across the heliopause (HP). This rotation was used as one of the criteria to determine if Voyager 1 (V1) had crossed the HP. Recently the Voyager team…

Solar and Stellar Astrophysics · Physics 2015-06-17 Merav Opher , James F. Drake

Voyager 1 and 2 crossed the heliopause at $\sim$122 AU in 2012 and $\sim$119 AU in 2018, respectively. It was quite a surprise because the thickness of the inner heliosheath obtained by the existing at that time models of the global…

Solar and Stellar Astrophysics · Physics 2023-03-29 V. V. Izmodenov , D. B. Alexashov

Global ideal magnetohydrodynamic models of the heliosphere typically predict a greatly exaggerated magnetic field pile-up in the inner heliosheath (IHS), the region between the termination shock and heliopause. However, Voyager 1 and 2…

Solar and Stellar Astrophysics · Physics 2026-02-16 Sergey D. Korolkov , Igor I. Baliukin , Merav Opher

Since its formation 4.6 billion years ago, our solar system has most likely crossed numerous magnetized interstellar clouds and bubbles of different sizes and contents on its path through the Milky Way. Having a reference model for how the…

Solar and Stellar Astrophysics · Physics 2012-10-03 Lotfi Ben-Jaffel , Romana Ratkiewicz

Opher et al. 2006 showed that an interstellar magnetic field parallel to the plane defined by the deflection of interstellar hydrogen atoms can produce a north/south asymmetry in the distortion of the solar wind termination shock. This…

Astrophysics · Physics 2009-11-11 Merav Opher , Edward C. Stone , Paulett C. Liewer , Tamas Gombosi

Recent research has shown that distinct physical regions in the Venusian induced magnetosphere are recognizable from the variations of strength and of wave/fluctuation activity of the magnetic field. In this paper the statistical properties…

Astrophysics · Physics 2009-06-30 Z. Vörös , T. L. Zhang , M. P. Leubner , M. Volwerk , M. Delva , W. Baumjohann , K. Kudela

The magnetopause marks the outer edge of the Earth's magnetosphere and a distinct boundary between solar wind and magnetospheric plasma populations. In this letter, we use global magnetohydrodynamic simulations to examine the response of…

The heliospheric Termination Shock is the largest (by dimension) shock in the heliosphere. It is believed that it is also the strongest shock and is responsible for the generation of the Anomalous Cosmic Ray component in the heliosphere.…

Astrophysics · Physics 2008-07-28 R. A. Treumann , C. H. Jaroschek

The magnetometer (MAG) on Voyager 1 (V1) has been sampling the interstellar magnetic field (ISMF) since August 2012. The V1 MAG observations have shown draped ISMF in the very local interstellar medium disturbed occasionally by significant…

Space Physics · Physics 2017-07-26 Tae K. Kim , Nikolai V. Pogorelov , Leonard F. Burlaga
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