Observations of the Outer Heliosphere, Heliosheath, and Interstellar Medium

Richardson, J. D.; Burlaga, L. F.; Elliott, H. A.; Kŭrth, W. S.; Liu, Y. D.; Steiger, R. von

doi:10.1007/s11214-022-00899-y

Cited by 33 publications

(21 citation statements)

References 122 publications

(206 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“… 2022 ; Richardson et al. 2022 ), but two topics reviewed briefly here are as follows: (i) interactions of TeV to PeV GCRs with the structure of the heliosphere, and (ii) GCR acceleration and propagation processes in the Local Interstellar Medium (LISM).…”

Section: Cosmic Rays On Larger Scales: An Astrophysical Perspectivementioning

confidence: 99%

Galactic Cosmic Rays Throughout the Heliosphere and in the Very Local Interstellar Medium

et al. 2022

View full text Add to dashboard Cite

We review recent observations and modeling developments on the subject of galactic cosmic rays through the heliosphere and in the Very Local Interstellar Medium, emphasizing knowledge that has accumulated over the past decade. We begin by highlighting key measurements of cosmic-ray spectra by Voyager, PAMELA, and AMS and discuss advances in global models of solar modulation. Next, we survey recent works related to large-scale, long-term spatial and temporal variations of cosmic rays in different regimes of the solar wind. Then we highlight new discoveries from beyond the heliopause and link these to the short-term evolution of transients caused by solar activity. Lastly, we visit new results that yield interesting insights from a broader astrophysical perspective.

show abstract

Section: Cosmic Rays On Larger Scales: An Astrophysical Perspectivementioning

confidence: 99%

Galactic Cosmic Rays Throughout the Heliosphere and in the Very Local Interstellar Medium

et al. 2022

View full text Add to dashboard Cite

show abstract

“…We do not know exactly for how long V1 and V2 will remain operational. Perhaps, they will be able to send data until 2027 or 2028 (Richardson et al, 2022). In the extended mission, NH will make distant observations of Uranus and Neptune.…”

Section: Discussionmentioning

confidence: 99%

Exploring turbulence from the Sun to the local interstellar medium: Current challenges and perspectives for future space missions

Fraternale

Zhao

Pogorelov

et al. 2022

Front. Astron. Space Sci.

View full text Add to dashboard Cite

Turbulence is ubiquitous in space plasmas. It is one of the most important subjects in heliospheric physics, as it plays a fundamental role in the solar wind—local interstellar medium interaction and in controlling energetic particle transport and acceleration processes. Understanding the properties of turbulence in various regions of the heliosphere with vastly different conditions can lead to answers to many unsolved questions opened up by observations of the magnetic field, plasma, pickup ions, energetic particles, radio and UV emissions, and so on. Several space missions have helped us gain preliminary knowledge on turbulence in the outer heliosphere and the very local interstellar medium. Among the past few missions, the Voyagers have paved the way for such investigations. This paper summarizes the open challenges and voices our support for the development of future missions dedicated to the study of turbulence throughout the heliosphere and beyond.

show abstract

“…In addition, shocks and compression waves may induce the observed anisotropy of GCR proton fluxes (Gurnett et al 2015;Rankin et al 2019). Details are discussed in Mostafavi et al (2022) and Richardson et al (2022) in this journal.…”

Section: Turbulence In the Very Local Interstellar Mediummentioning

confidence: 97%

“…Indeed, the q-Gaussian distribution (Gaussian core and fat power-law tails, Tsallis 1988) was found to excellently fit the data , and is associated with intermittent behavior. A remarkable feature of turbulence in the distant SW is the significant decrease of intermittency observed by at ∼ 60 AU, (see details in Richardson et al (2022), this journal), and recently further investigated by Parashar et al (2019) and Cuesta et al (2022). In these later papers the observed reduction of the small-scale intermittency of magnetic field increments with distance, out to 10 AU, is associated with the decreasing bandwidth of the inertial range with distance (effective Reynolds number scaling as R −2/3 ).…”

Section: Evidence Of Turbulence In the Distant Supersonic Solar Windmentioning

confidence: 99%

“…The multifractal formalism is a powerful classical tool to describe the structure of the dissipation rate in turbulence (see, e.g., Meneveau and Sreenivasan 1987;Frisch 1995). The analysis of the fluctuations of B led to remarkable outcomes, such as demonstrations of (i) the existence of a P ∼ f −1 power spectral regime on scales in the range of 1-100 days (e.g, Burlaga and Ness 2013) and (ii) the presence of large-scale intermittency, although at lower levels with respect to the supersonic SW (see Richardson et al 2022). applied the "q-triplet" concept from the nonextensive statistical mechanics (Tsallis 2009) to provide evidence that fluctuations in the IHS are in a quasi-stationary, metaequilibrium state.…”

Section: A Statistical Description Of Ihs Fluctuationsmentioning

confidence: 99%

See 1 more Smart Citation

Turbulence in the Outer Heliosphere

et al. 2022

View full text Add to dashboard Cite

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 populations, bulk flow and turbulence. Our knowledge of the solar wind turbulence nature and dynamics mostly relies on near-Earth and near-Sun observations, and has been increasingly improving in recent years due to the availability of a wealth of space missions, including multi-spacecraft missions. In contrast, the properties of turbulence in the outer heliosphere are still not completely understood. In situ observations by Voyager and New Horizons, and remote neutral atom measurements by IBEX strongly suggest that turbulence is one of the critical processes acting at the heliospheric interface. It is intimately connected to charge exchange processes responsible for the production of suprathermal ions and energetic neutral atoms. This paper reviews the observational evidence of turbulence in the distant SW and in the LISM, advances in modeling efforts, and open challenges.

show abstract

Observations of the Outer Heliosphere, Heliosheath, and Interstellar Medium

Cited by 33 publications

References 122 publications

Galactic Cosmic Rays Throughout the Heliosphere and in the Very Local Interstellar Medium

Galactic Cosmic Rays Throughout the Heliosphere and in the Very Local Interstellar Medium

Exploring turbulence from the Sun to the local interstellar medium: Current challenges and perspectives for future space missions

Turbulence in the Outer Heliosphere

Contact Info

Product

Resources

About