NOTICE: Use the parameters below to customize your search. Regular expressions and bolean "AND" will to match the search. In the case of "Author name", the search is performed using only for the last name.
Found 8 entries in the Bibliography.
Showing entries from 1 through 8
Parker Solar Probe Observations of Solar Wind Energetic Proton Beams Produced by Magnetic Reconnection in the Near-Sun Heliospheric Current Sheet
We report observations of reconnection exhausts in the Heliospheric Current Sheet (HCS) during Parker Solar Probe Encounters 08 and 07, at 16 R$_s$ and 20 R$_s$, respectively. Heliospheric current sheet (HCS) reconnection accelerated protons to almost twice the solar wind speed and increased the proton core energy by a factor of \ensuremath\sim3, due to the Alfv\ en speed being comparable to the solar wind flow speed at these near-Sun distances. Furthermore, protons were energized to super-thermal energies. During E08, energ ...
Phan, T.~D.; Verniero, J.~L.; Larson, D.; Lavraud, B.; Drake, J.~F.; Oieroset, M.; Eastwood, J.~P.; Bale, S.~D.; Livi, R.; Halekas, J.~S.; Whittlesey, P.~L.; Rahmati, A.; Stansby, D.; Pulupa, M.; MacDowall, R.~J.; Szabo, P.~A.; Koval, A.; Desai, M.; Fuselier, S.~A.; Velli, M.; Hesse, M.; Pyakurel, P.~S.; Maheshwari, K.; Kasper, J.~C.; Stevens, J.~M.; Case, A.~W.; Raouafi, N.~E.;
Published by: \grl Published on: may
YEAR: 2022   DOI: 10.1029/2021GL096986
Parker Data Used; magnetic reconnection; Particle acceleration; Solar wind; parker solar probe; heliospheric current sheet
Categorizing MHD Discontinuities in the Inner Heliosphere by Utilizing the PSP Mission
The interplanetary discontinuities (IDs) have been widely observed in astrophysical and space plasmas, while their characteristics and evolutions within 0.3 AU are still unclear due to the limitation of spacecraft orbits in previous missions. Here, we report three ID events, including a rotational discontinuity (RD), a tangential discontinuity (TD), and a suspected contact discontinuity (CD), detected by the Parker Solar Probe in a previously unexplored region of the heliosphere as close to the Sun as 0.13 AU. By the combina ...
Liu, Y.~Y.; Fu, H.~S.; Cao, J.~B.; Yu, Y.; Liu, C.~M.; Wang, Z.; Guo, Z.~Z.; He, R.~J.;
Published by: Journal of Geophysical Research (Space Physics) Published on: mar
YEAR: 2022   DOI: 10.1029/2021JA029983
A Study of an Equatorial Coronal Hole Observed at the First Parker Solar Probe Perihelion
In this study, we present an observational analysis of a coronal hole (CH) observed on 2018 November 1 and solar wind (SW) that originated from it, using the Solar Dynamics Observatory, the Parker Solar Probe (PSP) observations at 68 solar radii, ACE and WIND data at 1 au, and interplanetary scintillation (IPS) observations from 0.2 to 1 au. The CH-originated SW stream was observed by L1 on 2018 November 4 and by PSP on 2018 November 15. We examined the CH for nine Carrington Rotations (CR) and find that the SW stream to rea ...
Karna, Nishu; Berger, Mitchell; Asgari-Targhi, Mahboubeh; Paulson, Kristoff; Fujiki, Ken;
Published by: \apj Published on: jan
YEAR: 2022   DOI: 10.3847/1538-4357/ac3c46
Global Distribution of the Solar Wind Speed Reconstructed from Improved Tomographic Analysis of Interplanetary Scintillation Observations between 1985 and 2019
Computer-assisted tomography (CAT) for interplanetary scintillation (IPS) observations enables the determination of the global distribution of solar wind speed. We compared solar wind speeds derived from the CAT analysis of IPS observations between 1985 and 2019 with in situ observations conducted by the near-Earth and Ulysses spacecraft. From this comparison, we found that solar wind speeds from the IPS observations for 2009-2019 were systematically higher than the in situ observations, whereas those for the period until 20 ...
Tokumaru, Munetoshi; Fujiki, Ken; Kojima, Masayoshi; Iwai, Kazumasa;
Published by: \apj Published on: nov
YEAR: 2021   DOI: 10.3847/1538-4357/ac1862
Parker Data Used; 1503; 1534; 828; 1487
Characteristics of Interplanetary Discontinuities in the Inner Heliosphere Revealed by Parker Solar Probe
We present a statistical analysis for the characteristics and spatial evolution of the interplanetary discontinuities (IDs) in the solar wind, from 0.13-0.9 au, by using the Parker Solar Probe measurements on Orbits 4 and 5. We collected 3948 IDs, including 2511 rotational discontinuities (RDs) and 557 tangential discontinuities (TDs), with the remnant unidentified. The statistical results show that (1) the ID occurrence rate decreases from 200 events per day at 0.13 au to 1 event per day at 0.9 au, following a spatial scali ...
Liu, Y.~Y.; Fu, H.~S.; Cao, J.~B.; Liu, C.~M.; Wang, Z.; Guo, Z.~Z.; Xu, Y.; Bale, S.~D.; Kasper, J.~C.;
Published by: \apj Published on: aug
YEAR: 2021   DOI: 10.3847/1538-4357/ac06a1
Interplanetary discontinuities; Solar wind; interplanetary magnetic fields; Magnetohydrodynamics; 820; 1534; 824; 1964; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics; Parker Data Used
An Optimization Principle for Computing Stationary MHD Equilibria with Solar Wind Flow
Wiegelmann, Thomas; Neukirch, Thomas; Nickeler, Dieter; Chifu, Iulia;
Published by: \solphys Published on: 10/2020
YEAR: 2020   DOI: 10.1007/s11207-020-01719-8
magnetic fields; Corona; models; Magnetohydrodynamics; Velocity fields; Solar wind; Astrophysics - Solar and Stellar Astrophysics
Modeling a Single SEP Event from Multiple Vantage Points Using the iPATH Model
Using the recently extended 2D improved Particle Acceleration and Transport in the Heliosphere (iPATH) model, we model an example gradual solar energetic particle event as observed at multiple locations. Protons and ions that are energized via the diffusive shock acceleration mechanism are followed at a 2D coronal mass ejection-driven shock where the shock geometry varies across the shock front. The subsequent transport of energetic particles, including cross-field diffusion, is modeled by a Monte Carlo code that is based ...
Hu, Junxiang; Li, Gang; Fu, Shuai; Zank, Gary; Ao, Xianzhi;
Published by: The Astrophysical Journal Published on: 02/2018
YEAR: 2018   DOI: 10.3847/2041-8213/aaabc1
parker solar probe; shock waves; Solar Probe Plus; Sun: coronal mass ejections: CMEs; Sun: heliosphere
Magnetospheric Multiscale Observation of Plasma Velocity-Space Cascade: Hermite Representation and Theory
Servidio, S.; Chasapis, A.; Matthaeus, W.~H.; Perrone, D.; Valentini, F.; Parashar, T.~N.; Veltri, P.; Gershman, D.; Russell, C.~T.; Giles, B.; Fuselier, S.~A.; Phan, T.~D.; Burch, J.;
Published by: \prl Published on: 11/2017
YEAR: 2017   DOI: 10.1103/PhysRevLett.119.205101
Parker Data Used; Physics - Plasma Physics; Astrophysics - Solar and Stellar Astrophysics