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Related papers: Probing Heliospheric Asymmetries with an MHD-kinet…

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We present a new 3d self-consistent two-component (plasma and neutral hydrogen) model of the solar wind interaction with the local interstellar medium (LISM). This model (K-MHD) combines the MHD treatment of the solar wind and the ionized…

Solar and Stellar Astrophysics · Physics 2015-05-27 Fathallah Alouani-Bibi , Merav Opher , Dimitry Alexashov , Vladislav Izmodenov , Gabor Toth

This paper provides a detailed description of the latest version of our model of the solar wind (SW) interaction with the local interstellar medium (LISM). This model has already been applied to the analysis of Lyman-alpha absorption…

Solar and Stellar Astrophysics · Physics 2015-10-28 Vladislav Izmodenov , Dmitry Alexashov

The solar system is moving through the partially ionized local interstellar cloud (LIC). The ionized matter of the LIC interacts with the expanding solar wind forming the heliospheric interface. The neutral component (interstellar atoms)…

Astrophysics · Physics 2015-06-24 V. V. Izmodenov , J. Geiss , R. Lallement , G. Gloeckler , V. B. Baranov , Y. G. Malama

The heliosphere is formed due to interaction between the solar wind (SW) and local interstellar medium (LISM). The shape and position of the heliospheric boundary, the heliopause, in space depend on the parameters of interacting plasma…

Solar and Stellar Astrophysics · Physics 2017-08-16 N. V. Pogorelov , J. Heerikhuisen , V. Roytershteyn , L. F. Burlaga , D. A. Gurnett , W. S. Kurth

We use newly developed 3D kinetic MHD models of the heliosphere to predict heliospheric H I Lyman-alpha absorption for various lines of sight. These predictions are compared with actual Lyman-alpha spectra from the Hubble Space Telescope,…

Astrophysics · Physics 2011-02-11 Brian E. Wood , Vladislav V. Izmodenov , Jeffrey L. Linsky , Dmitry Alexashov

The interaction of the solar wind with the local interstellar medium (LISM) spans a wide range of interacting particle populations, energies, and scales. Sophisticated models are required to capture the global picture, interpret near-Earth…

Space Physics · Physics 2025-07-21 Federico Fraternale , Nikolai V. Pogorelov , Ratan K. Bera

Stellar winds interact with the partially ionized interstellar medium (ISM), forming astrospheres. A key feature of this interaction is the hydrogen wall - secondary interstellar atoms produced via charge exchange near the tangential…

Solar and Stellar Astrophysics · Physics 2026-03-02 Sergey D. Korolkov , Vladislav V. Izmodenov

At present, the heliosphere is embedded in a warm low density interstellar cloud that belongs to a cloud system flowing through the local standard of rest with a velocity near ~18 km/s. The velocity structure of the nearest interstellar…

Astrophysics · Physics 2011-02-11 Hans-R. Mueller , Priscilla C. Frisch , Vladimir Florinski , Gary P. Zank

In this Letter, we provide constraints on the direction and magnitude of the pristine (i.e., unperturbed by the interaction with the Sun) local interstellar magnetic field. The constraints are based on analysis of the interstellar magnetic…

Space Physics · Physics 2020-01-29 Vladislav V. Izmodenov , Dmitry B. Alexashov

Interstellar neutral hydrogen flows into the heliosphere as a mixture of the primary and secondary populations from two somewhat different directions due to splitting occurring in the magnetized outer heliosheath. The direction of inflow of…

Solar and Stellar Astrophysics · Physics 2023-12-12 M. Bzowski , M. A. Kubiak , M. Strumik , I. Kowalska-Leszczynska , C. Porowski , E. Quemerais

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…

The charge exchange between the interstellar medium (ISM) and the solar wind plasma is crucial for determining the structures of the heliosphere. Since both the neutral-ion and neutral-neutral collision mean free paths are either comparable…

Space Physics · Physics 2024-03-20 Yuxi Chen , Gabor Toth , Erick Powell , Talha Arshad , Ethan Bair , Marc Kornbleuth , Merav Opher

In situ observations of interstellar neutral (ISN) helium atoms by the IBEX-Lo instrument onboard the Interstellar Boundary Explorer (IBEX) mission are used to determine the velocity and temperature of the pristine very local interstellar…

A key indicator of the galactic environment of the Sun is provided by the magnetic field in the interstellar medium (ISM), which influences the shape of the heliosphere. The direction of the nearby interstellar magnetic field (ISMF) is…

The journey of the Sun through space carries the solar system through a dynamic interstellar environment that is presently characterized by Mach 1 motion between the heliosphere and the surrounding interstellar medium (ISM). The interaction…

Astrophysics of Galaxies · Physics 2015-06-24 P. C. Frisch , M. Bzowski , C. Drews , T. Leonard , G. Livadiotis , D. J. McComas , E. Moebius , N. A. Schwadron , J. M. Sokol

The solar wind (SW) and local interstellar medium (LISM) are turbulent media. Their interaction is governed by complex physical processes and creates heliospheric regions with significantly different properties in terms of particle…

Context. The heliosphere is formed by the interaction between the solar wind (SW) plasma emanating from the Sun and a magnetised component of local interstellar medium (LISM) inflowing on the Sun. A separation surface called the heliopause…

Solar and Stellar Astrophysics · Physics 2023-10-11 P. Bladek , R. Ratkiewicz

NASA's Interstellar Boundary Explorer (IBEX) mission has recently opened a new window on the interstellar medium (ISM) by imaging neutral atoms. One "bright" feature in the sky is the interstellar wind flowing into the solar system.…

Radiative transfer equilibrium models of nearby interstellar matter (ISM) yield the boundary conditions of the heliosphere when constrained with observations of ISM inside and outside of the heliosphere. Filtration factors for interstellar…

Astrophysics · Physics 2015-06-24 Priscilla C. Frisch

Neutral hydrogen has been shown to greatly impact the plasma flow in the heliopshere and the location of the heliospheric boundaries. We present the results of the Solar-wind with Hydrogen Ion Exchange and Large-scale Dynamics (SHIELD)…

Space Physics · Physics 2020-04-03 Adam T. Michael , Merav Opher , Gabor Toth , Valeriy Tenishev , Dmitry Borovikov
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