☆ 4.7 Article

The Radial Evolution of the Solar Wind as Organized by Electron Distribution Parameters

ASTROPHYSICAL JOURNAL (2022)

Related references

Note: Only part of the references are listed.

Article Astronomy & Astrophysics

Radial Evolution of Thermal and Suprathermal Electron Populations in the Slow Solar Wind from 0.13 to 0.5 au: Parker Solar Probe Observations

Joel B. Abraham et al.

Summary: We develop and apply a fitting routine to analyze solar wind electron distribution data measured by Parker Solar Probe during its first five orbits, revealing the radial evolution of electron core, halo, and strahl populations in the slow solar wind. The results show that the combined suprathermal halo and strahl populations grow from 0.13 to 0.17 au, contradicting previous observations at distances greater than 0.3 au where an increase in halo is accompanied by a decrease in strahl. Additionally, the halo is negligible at small heliocentric distances, and the fractional strahl density remains relatively constant below 0.2 au.

ASTROPHYSICAL JOURNAL (2022)

Add to Collection

Article Astronomy & Astrophysics

The heliospheric ambipolar potential inferred from sunward-propagating halo electrons

Konstantinos Horaites et al.

Summary: We provide evidence that the sunward-propagating half of the solar wind electron halo distribution evolves without scattering in the inner heliosphere. By studying the electron pitch angle distributions, we show that choosing an appropriate interplanetary potential can be consistent with Liouville's theorem. We also find that the inferred potential plays a crucial role in the acceleration of the solar wind.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2022)

Add to Collection

Article Astronomy & Astrophysics

Ambipolar Electric Field and Potential in the Solar Wind Estimated from Electron Velocity Distribution Functions

Laura Bercic et al.

Summary: This study investigates the electrostatic contribution to solar wind dynamics using data from the Parker Solar Probe, estimating the ambipolar electric field and potential. The analysis reveals a suprathermal electron deficit in the near-Sun solar wind, corresponding to a predicted cutoff energy in collisionless exospheric models. The findings are consistent with theoretical expectations and suggest a decrease in electrostatic acceleration with radial distance.

ASTROPHYSICAL JOURNAL (2021)

Add to Collection

Article Astronomy & Astrophysics

The Interplay Between Ambipolar Electric Field and Coulomb Collisions in the Solar Wind Acceleration Region

L. Bercic et al.

Summary: In this study, a numerical kinetic model was used to investigate the impact of the complex physical mechanisms of solar wind acceleration on the electron velocity distribution functions. A continuous transition between collisional and weakly collisional regime resulted in broader pitch-angle width (PAW), while collisions scattered strahl electrons and affected T-s,T-||.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2021)

Add to Collection

Article Astronomy & Astrophysics

Whistler instability driven by the sunward electron deficit in the solar wind High-cadence Solar Orbiter observations

L. Bercic et al.

Summary: This study investigates the role of suprathermal electron deficit in driving kinetic instability and generating quasi-parallel whistler waves in the solar wind. Through observations from Solar Orbiter, the study confirms the existence of these waves and their impact on electron heat flux. The sunward deficit acts as a source for quasi-parallel whistler waves, leading to a reduction in total electron heat flux.

ASTRONOMY & ASTROPHYSICS (2021)

Add to Collection

Article Astronomy & Astrophysics

The Sunward Electron Deficit: A Telltale Sign of the Sun's Electric Potential

J. S. Halekas et al.

Summary: As the Parker Solar Probe delves deeper into the inner heliosphere, it has identified a deficit in the sunward electron distribution, which may necessitate a reevaluation of commonly used functional forms for representing electron distributions in this environment.

ASTROPHYSICAL JOURNAL (2021)

Add to Collection

Article Multidisciplinary Sciences

Electron temperature of the solar wind

Stanislav Boldyrev et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2020)

Add to Collection

Article Astronomy & Astrophysics

The Solar Orbiter mission: Science overview

D. Mueller et al.

ASTRONOMY & ASTROPHYSICS (2020)

Add to Collection

Article Astronomy & Astrophysics

The Solar Probe ANalyzers-Electrons on the Parker Solar Probe

Phyllis L. Whittlesey et al.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2020)

Add to Collection

Article Astronomy & Astrophysics

Anticorrelation between the Bulk Speed and the Electron Temperature in the Pristine Solar Wind: First Results from the Parker Solar Probe and Comparison with Helios

M. Maksimovic et al.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2020)

Add to Collection

Article Astronomy & Astrophysics

Electrons in the Young Solar Wind: First Results from the Parker Solar Probe

J. S. Halekas et al.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2020)

Add to Collection

Article Astronomy & Astrophysics

Coronal Electron Temperature Inferred from the Strahl Electrons in the Inner Heliosphere: Parker Solar Probe and Helios Observations

Laura Bercic et al.

ASTROPHYSICAL JOURNAL (2020)

Add to Collection

Article Multidisciplinary Sciences

Alfvenic velocity spikes and rotational flows in the near-Sun solar wind

J. C. Kasper et al.

NATURE (2019)

Add to Collection

Article Multidisciplinary Sciences

Highly structured slow solar wind emerging from an equatorial coronal hole

S. D. Bale et al.

NATURE (2019)

Add to Collection

Review Astronomy & Astrophysics

Solar Wind Electrons Alphas and Protons (SWEAP) Investigation: Design of the Solar Wind and Coronal Plasma Instrument Suite for Solar Probe Plus

Justin C. Kasper et al.

SPACE SCIENCE REVIEWS (2016)

Add to Collection

Review Astronomy & Astrophysics

The Solar Probe Plus Mission: Humanity's First Visit to Our Star

N. J. Fox et al.

SPACE SCIENCE REVIEWS (2016)

Add to Collection

Review Astronomy & Astrophysics

The FIELDS Instrument Suite for Solar Probe Plus

S. D. Bale et al.

SPACE SCIENCE REVIEWS (2016)

Add to Collection

Review Astronomy & Astrophysics

Self-Consistent Models of the Solar Wind

Steven R. Cranmer

SPACE SCIENCE REVIEWS (2012)

Add to Collection

Review Astronomy & Astrophysics

Solar Wind Models from the Chromosphere to 1 AU

Viggo H. Hansteen et al.

SPACE SCIENCE REVIEWS (2012)

Add to Collection

Review Geochemistry & Geophysics

Understanding coronal heating and solar wind acceleration: Case for in situ near-Sun measurements

D. J. McComas et al.

REVIEWS OF GEOPHYSICS (2007)

Add to Collection

Article Astronomy & Astrophysics

Radial evolution of the electron distribution functions in the fast solar wind between 0.3 and 1.5 AU

M Maksimovic et al.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2005)

Add to Collection

Article Astronomy & Astrophysics

A transonic collisionless model of the solar wind

I Zouganelis et al.

ASTROPHYSICAL JOURNAL (2004)

Add to Collection

Article Astronomy & Astrophysics

Acceleration of the solar wind as a result of the reconnection of open magnetic flux with coronal loops

LA Fisk

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2003)

Add to Collection

Article Astronomy & Astrophysics

Implications of the observed anticorrelation between solar wind speed and coronal electron temperature

G Gloeckler et al.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2003)

Add to Collection

Review Astronomy & Astrophysics

Generation of the fast solar wind: A review with emphasis on the resonant cyclotron interaction

JV Hollweg et al.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2002)

Add to Collection

© Peeref 2019-2024. All rights reserved.