Results 91 to 100 of about 205 (182)

On the Acceleration of the Young Solar Wind from Different Source Regions

The Astrophysical Journal Letters
The acceleration of the young solar wind is studied using the first 17 encounters of the Parker Solar Probe. We identify wind intervals from different source regions: coronal hole (CH) interiors, streamers, and low-Mach-number boundary layers (LMBLs), i ...
Yiming Jiao, Ying D. Liu, Wenshuai Cheng, Hao Ran, Rui Wang   +4 more
doaj   +1 more source

Radial Evolution of a Density Structure within a Solar Wind Magnetic Sector Boundary

The Astrophysical Journal
This study focuses on a radial alignment between Parker Solar Probe (PSP) and Solar Orbiter (SolO) on 2021 April 29 (during a solar minimum), when the two spacecraft were, respectively, located at ∼0.075 and ∼0.9 au from the Sun. A previous study of this
Etienne Berriot, Pascal Démoulin, Olga Alexandrova, Arnaud Zaslavsky, Milan Maksimovic, Georgios Nicolaou   +5 more
doaj   +1 more source

Understanding the Origins of Problem Geomagnetic Storms Associated with "Stealth" Coronal Mass Ejections. [PDF]

Space Sci Rev, 2021
Nitta NV, Mulligan T, Kilpua EKJ, Lynch BJ, Mierla M, O'Kane J, Pagano P, Palmerio E, Pomoell J, Richardson IR, Rodriguez L, Rouillard AP, Sinha S, Srivastava N, Talpeanu DC, Yardley SL, Zhukov AN.   +16 more
europepmc   +1 more source

Quantitative Image-based Validation Framework for Assessing Global Coronal Magnetic Field Models

The Astrophysical Journal
Coronagraph observations provide key information about the orientation of the Sun’s magnetic field. Previous studies used various algorithms to segment quasi-radial features in coronagraph images and approximate their local plane-of-sky (POS) geometry ...
Christopher E. Rura, Vadim M. Uritsky, Shaela I. Jones, Cooper Downs, Charles Nickolos Arge, Nathalia Alzate   +5 more
doaj   +1 more source

Earth-affecting solar transients: a review of progresses in solar cycle 24. [PDF]

Prog Earth Planet Sci, 2021
Zhang J, Temmer M, Gopalswamy N, Malandraki O, Nitta NV, Patsourakos S, Shen F, Vršnak B, Wang Y, Webb D, Desai MI, Dissauer K, Dresing N, Dumbović M, Feng X, Heinemann SG, Laurenza M, Lugaz N, Zhuang B.   +18 more
europepmc   +1 more source

Cross Helicity and the Helium Abundance as an In Situ Metric of Solar Wind Acceleration

The Astrophysical Journal Letters
The two-state solar wind paradigm is based on observations showing that slow and fast solar wind have distinct properties like helium abundances, kinetic signatures, elemental composition, and charge-state ratios. Nominally, the fast wind originates from
B. L. Alterman, Raffaella D’Amicis
doaj   +1 more source

The evolution of the solar wind. [PDF]

Living Rev Sol Phys, 2021
Vidotto AA.
europepmc   +1 more source

A Model for Flux Rope Formation and Disconnection in Pseudostreamer Coronal Mass Ejections

The Astrophysical Journal
Coronal mass ejections (CMEs) from pseudostreamers represent a significant fraction of large-scale eruptions from the Sun. In some cases, these CMEs take a narrow jet-like form reminiscent of coronal jets; in others, they have a much broader fan-shaped ...
P. F. Wyper, B. J. Lynch, C. R. DeVore, P. Kumar, S. K. Antiochos, L. K. S. Daldorff   +5 more
doaj   +1 more source

Development of a local empirical model of ionospheric total electron content (TEC) and its application for studying solar-ionospheric effects. [PDF]

Sci Rep, 2021
Davoudifar P, Tabari KR, Shafigh AAE, Ajabshirizadeh A, Bagheri Z, Akbarian Tork Abad F, Shayan M.   +6 more
europepmc   +1 more source

Nine Outstanding Questions of Solar Wind Physics. [PDF]

J Geophys Res Space Phys, 2020
Viall NM, Borovsky JE.
europepmc   +1 more source