@article{Horbury:2018:mnras/sty953,
author = {Horbury, TS and Matteini, L and Stansby, D},
doi = {mnras/sty953},
journal = {Monthly Notices of the Royal Astronomical Society},
pages = {1980--1986},
title = {Short, large-amplitude speed enhancements in the near-Sun fast solar wind},
url = {http://dx.doi.org/10.1093/mnras/sty953},
volume = {478},
year = {2018}
}

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TY  - JOUR
AB  - We report the presence of intermittent, short discrete enhancements in plasma speed in the near-Sun high speed solar wind. Lasting tens of seconds to minutes in spacecraft measurements at 0.3 AU, speeds inside these enhancements  can reach 1000 km/s, corresponding to a kinetic energy up to twice that of the bulk high speed solar wind. These events, which occur around 5% of the time, are Alfvenic in nature with large magnetic field deflections and are the same temperature as the surrounding plasma, in contrast to the bulk fast wind which has a well-established positive speed-temperature correlation. The origin of these speed enhancements is unclear but they may be signatures of discrete jets associated with transient events in the chromosphere or corona. Such large short velocity changes represent a measurement and analysis challenge for the upcoming Parker Solar Probe and Solar Orbiter missions.
AU  - Horbury,TS
AU  - Matteini,L
AU  - Stansby,D
DO  - mnras/sty953
EP  - 1986
PY  - 2018///
SN  - 0035-8711
SP  - 1980
TI  - Short, large-amplitude speed enhancements in the near-Sun fast solar wind
T2  - Monthly Notices of the Royal Astronomical Society
UR  - http://dx.doi.org/10.1093/mnras/sty953
UR  - https://academic.oup.com/mnras/article/478/2/1980/4987231
UR  - http://hdl.handle.net/10044/1/59982
VL  - 478
ER  - 

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