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

Sokół, J. M.; Kucharek, H.; Baliukin, Igor; Fahr, H. J.; Izmodenov, Vladislav; Kornbleuth, Marc; Mostafavi, Parisa; Opher, M.; Park, Jeewoo; Pogorelov, N. V.; Quinn, Philip; Smith, Charles W.; Zank, G. P.; Zhang, Ming

doi:10.1007/s11214-022-00883-6

Cited by 15 publications

(12 citation statements)

References 247 publications

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“…( 2022 ) and Sokół et al. ( 2022 ). The energy spectrum of the globally distributed flux can be described as a sequence of power laws.…”

Section: Comparing Heliosphere Models With Measurements: Lessons Learnedmentioning

confidence: 94%

“…Furthermore, the Moscow model has been employed in the results presented in the papers of Sokół et al. ( 2022 ), Galli et al. ( 2022 ), Herbst ( 2022 ), and Baliukin et al.…”

Section: Moscow 3d Kinetic-mhd Model Of the Global Heliospherementioning

confidence: 99%

“…( 2022 ) on turbulence and Sokół et al. ( 2022 ) on the modeling of energetic neutral atoms and pickup ions. Particularly this last one will likely have some partial overlap, and thus suggest itself prominently for further reading.…”

Section: Introductionmentioning

confidence: 99%

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The Structure of the Large-Scale Heliosphere as Seen by Current Models

et al. 2022

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This review summarizes the current state of research aiming at a description of the global heliosphere using both analytical and numerical modeling efforts, particularly in view of the overall plasma/neutral flow and magnetic field structure, and its relation to energetic neutral atoms. Being part of a larger volume on current heliospheric research, it also lays out a number of key concepts and describes several classic, though still relevant early works on the topic. Regarding numerical simulations, emphasis is put on magnetohydrodynamic (MHD), multi-fluid, kinetic-MHD, and hybrid modeling frameworks. Finally, open issues relating to the physical relevance of so-called “croissant” models of the heliosphere, as well as the general (dis)agreement of model predictions with observations are highlighted and critically discussed.

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“…( 2022 ) and Sokół et al. ( 2022 ). The energy spectrum of the globally distributed flux can be described as a sequence of power laws.…”

Section: Comparing Heliosphere Models With Measurements: Lessons Learnedmentioning

confidence: 94%

“…Furthermore, the Moscow model has been employed in the results presented in the papers of Sokół et al. ( 2022 ), Galli et al. ( 2022 ), Herbst ( 2022 ), and Baliukin et al.…”

Section: Moscow 3d Kinetic-mhd Model Of the Global Heliospherementioning

confidence: 99%

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The Structure of the Large-Scale Heliosphere as Seen by Current Models

et al. 2022

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“…Theoretical efforts to better understand secondary ISN populations in the heliosphere are presented in more detail in the review by Sokół et al. ( 2022 ) (Sect. 8.3).…”

Section: Observations Of Energetic Neutral Atoms and Interstellar Neu...mentioning

confidence: 99%

“…Further articles directly related to this paper are: Theory and modeling of pick-up ions (PUI) and ENAs by Sokół et al. ( 2022 ), observations of interstellar PUI by Zirnstein et al. ( 2022 ), in-situ observations of the outer heliosphere by Richardson et al.…”

Section: Introductionmentioning

confidence: 99%

The Heliosphere and Local Interstellar Medium from Neutral Atom Observations at Energies Below 10 keV

et al. 2022

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As the heliosphere moves through the surrounding interstellar medium, a fraction of the interstellar neutral helium, hydrogen, and heavier species crossing the heliopause make it to the inner heliosphere as neutral atoms with energies ranging from few eV to several hundred eV. In addition, energetic neutral hydrogen atoms originating from solar wind protons and from pick-up ions are created through charge-exchange with interstellar atoms.This review summarizes all observations of heliospheric energetic neutral atoms and interstellar neutrals at energies below 10 keV. Most of these data were acquired with the Interstellar Boundary Explorer launched in 2008. Among many other IBEX breakthroughs, it provided the first ever all-sky maps of energetic neutral atoms from the heliosphere and enabled the science community to measure in-situ interstellar neutral hydrogen, oxygen, and neon for the first time.These observations have revolutionized and keep challenging our understanding of the heliosphere shaped by the combined forces of the local interstellar flow, the local interstellar magnetic field, and the time-dependent solar wind.

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Astrospheres of Planet-Hosting Cool Stars and Beyond ⋅ When Modeling Meets Observations

et al. 2022

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Thanks to dedicated long-term missions like Voyager and GOES over the past 50 years, much insight has been gained on the activity of our Sun, the solar wind, its interaction with the interstellar medium, and, thus, about the formation, the evolution, and the structure of the heliosphere. Additionally, with the help of multi-wavelength observations by the Hubble Space Telescope, Kepler, and TESS, we not only were able to detect a variety of extrasolar planets and exomoons but also to study the characteristics of their host stars, and thus became aware that other stars drive bow shocks and astrospheres. Although features like, e.g., stellar winds, could not be measured directly, over the past years several techniques have been developed allowing us to indirectly derive properties like stellar mass-loss rates and stellar wind speeds, information that can be used as direct input to existing astrospheric modeling codes. In this review, the astrospheric modeling efforts of various stars will be presented. Starting with the heliosphere as a benchmark of astrospheric studies, investigating the paleo-heliospheric changes and the Balmer $\text{H}\upalpha$ H α projections to $1~\text{pc}$ 1 pc , we investigate the surroundings of cool and hot stars, but also of more exotic objects like neutron stars. While pulsar wind nebulae (PWNs) might be a source of high-energy galactic cosmic rays (GCRs), the astrospheric environments of cool and hot stars form a natural shield against GCRs. Their modulation within these astrospheres, and the possible impact of turbulence, are also addressed. This review shows that all of the presented modeling efforts are in excellent agreement with currently available observations.

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

Cited by 15 publications

References 247 publications

The Structure of the Large-Scale Heliosphere as Seen by Current Models

The Structure of the Large-Scale Heliosphere as Seen by Current Models

The Heliosphere and Local Interstellar Medium from Neutral Atom Observations at Energies Below 10 keV

Astrospheres of Planet-Hosting Cool Stars and Beyond ⋅ When Modeling Meets Observations

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