Results 41 to 50 of about 21,013 (198)

Solar Sector Structure

, 2015
The interplanetary magnetic field near has a characteristic "sector" structure that reflects its polarity relative to the solar direction. Typically we observe large-scale coherence in these directions, with two or four "away" or "towards" sectors per ...
Hannah, Iain, Hudson, Hugh, Svalgaard, Leif   +2 more
core   +1 more source

A Global Magnetic Topology Model for Magnetic Clouds. V

The Astrophysical Journal
Magnetic clouds (MCs) are large-scale magnetic structures in the solar wind whose internal physical processes remain only partially understood. In this work, we present an extended analytical model of MCs that simultaneously describes the magnetic field,
M. A. Hidalgo
doaj   +1 more source

Instabilities Driven by Proton Temperature Anisotropy in the Presence of Alpha Particles: Implications for Proton-temperature-anisotropy Constraint in the Solar Wind

The Astrophysical Journal, 2023
In situ measurements reveal that proton temperature anisotropy is ubiquitous in the solar wind. Various plasma instabilities have been proposed to regulate the distribution of the proton temperature anisotropy in the solar wind; detailed constraint ...
L. Xiang, D. J. Wu, L. Chen, Q. H. Li, G. Q. Zhao, H. Q. Feng, H. W. Yu   +6 more
doaj   +1 more source

On the Origin of High–Frequency Magnetic Fluctuations in the Interplanetary Medium: A Brownian–like Approach

Frontiers in Physics, 2021
Low–frequency fluctuations in the interplanetary medium have been extensively investigated and described in the framework of turbulence, and the observed universal scaling behavior represents a clear signature of the underlying energy cascade.
Vincenzo Carbone, Vincenzo Carbone, Fabio Lepreti, Fabio Lepreti, Antonio Vecchio, Antonio Vecchio, Tommaso Alberti, Federica Chiappetta   +7 more
doaj   +1 more source

Low-frequency Waves Due to Newborn Interstellar Pickup Ions Observed from 43 to 47 au by the Voyager 1 Spacecraft

The Astrophysical Journal, 2023
Interstellar neutral atoms enter the heliosphere at a relatively slow speed corresponding to the motion of the Sun through the local interstellar medium, which is approximately 25 km s ^−1 .
Lily A. Ercoline, Charles W. Smith, Matthew R. Argall, Colin J. Joyce, Philip A. Isenberg, Bernard J. Vasquez, Nathan A. Schwadron, Justyna M. Sokół, Leonard F. Burlaga   +8 more
doaj   +1 more source

Signatures of magnetic reconnection at boundaries of interplanetary small-scale magnetic flux ropes

, 2010
The interaction between interplanetary small-scale magnetic flux ropes and the magnetic field in the ambient solar wind is an important topic to understand- ing the evolution of magnetic structures in the heliosphere.
Cartwright, Cheng, Feng, Goldstein, Gopalswamy, Gosling, Hui Tian, Jiansen He, Lundquist, Petschek, Pick, Qiugang Zong, Schwenn, Shiota, Shuo Yao, van der Holst, Yu Qi   +16 more
core   +1 more source

Terrestrial, planetary and interplanetary magnetic fields [PDF]

Astronomy and Geophysics, 2000
A discussion meeting at Burlington House on 10 March 2000 featured eight speakers and an audience of about 50. Andy Smith reports.
openaire   +1 more source

Proposed Resolution to the Solar Open Magnetic Flux Problem

The Astrophysical Journal
The solar magnetic fields emerging from the photosphere into the chromosphere and corona are comprised of a combination of closed (field lines with both ends rooted at the Sun) and open (field lines with only one end at the Sun) fields.
C. Nick Arge, Andrew Leisner, Spiro K. Antiochos, Samantha Wallace, Carl J. Henney   +4 more
doaj   +1 more source

Scaling Anisotropy with Stationary Background Field in Near-Sun Solar Wind Turbulence

The Astrophysical Journal, 2023
The scaling of magnetic fluctuations provides crucial information for the understanding of solar wind turbulence. However, the observed magnetic fluctuations contain not only turbulence but also magnetic structures, leading to the violation of time ...
Honghong Wu, Jiansen He, Shiyong Huang, Liping Yang, Xin Wang, Zhigang Yuan   +5 more
doaj   +1 more source

Persistence of small-scale anisotropy of magnetic turbulence as observed in the solar wind [PDF]

, 2006
The anisotropy of magnetophydrodynamic turbulence is investigated by using solar wind data from the Helios 2 spacecraft. We investigate the behaviour of the complete high-order moment tensors of magnetic field increments and we compare the usual ...
Biskamp D., Bruno R., Carbone V., Frisch U., Kolmogorov A. N., Kurien S., L Sorriso-Valvo, P Veltri, R Bruno, Sonnerup B. U. O., Sreenivasan K. R., V Carbone   +11 more
core   +2 more sources