@article{Phan:2022:10.1029/2021gl096986,
author = {Phan, TD and Verniero, JL and Larson, D and Lavraud, B and Drake, JF and Øieroset, M and Eastwood, JP and Bale, SD and Livi, R and Halekas, JS and Whittlesey, PL and Rahmati, A and Stansby, D and Pulupa, M and MacDowall, RJ and Szabo, PA and Koval, A and Desai, M and Fuselier, SA and Velli, M and Hesse, M and Pyakurel, PS and Maheshwari, K and Kasper, JC and Stevens, JM and Case, AW and Raouafi, NE},
doi = {10.1029/2021gl096986},
journal = {Geophysical Research Letters},
title = {Parker solar probe observations of solar wind energetic proton beams produced by magnetic reconnection in the nearsun heliospheric current sheet},
url = {http://dx.doi.org/10.1029/2021gl096986},
volume = {49},
year = {2022}
}

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TY  - JOUR
AB  - We report observations of reconnection exhausts in the Heliospheric Current Sheet (HCS) during Parker Solar Probe Encounters 08 and 07, at 16 Rs and 20 Rs, 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 ∼3, due to the Alfvén speed being comparable to the solar wind flow speed at these near-Sun distances. Furthermore, protons were energized to super-thermal energies. During E08, energized protons were found to have leaked out of the exhaust along separatrix field lines, appearing as field-aligned energetic proton beams in a broad region outside the HCS. Concurrent dropouts of strahl electrons, indicating disconnection from the Sun, provide further evidence for the HCS being the source of the beams. Around the HCS in E07, there were also proton beams but without electron strahl dropouts, indicating that their origin was not the local HCS reconnection exhaust.
AU  - Phan,TD
AU  - Verniero,JL
AU  - Larson,D
AU  - Lavraud,B
AU  - Drake,JF
AU  - Øieroset,M
AU  - Eastwood,JP
AU  - Bale,SD
AU  - Livi,R
AU  - Halekas,JS
AU  - Whittlesey,PL
AU  - Rahmati,A
AU  - Stansby,D
AU  - Pulupa,M
AU  - MacDowall,RJ
AU  - Szabo,PA
AU  - Koval,A
AU  - Desai,M
AU  - Fuselier,SA
AU  - Velli,M
AU  - Hesse,M
AU  - Pyakurel,PS
AU  - Maheshwari,K
AU  - Kasper,JC
AU  - Stevens,JM
AU  - Case,AW
AU  - Raouafi,NE
DO  - 10.1029/2021gl096986
PY  - 2022///
SN  - 0094-8276
TI  - Parker solar probe observations of solar wind energetic proton beams produced by magnetic reconnection in the nearsun heliospheric current sheet
T2  - Geophysical Research Letters
UR  - http://dx.doi.org/10.1029/2021gl096986
UR  - https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021GL096986
UR  - http://hdl.handle.net/10044/1/97321
VL  - 49
ER  - 

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