BibTex format
@article{Muro:2025:1538-4357/adadf7,
author = {Muro, GD and Cohen, CMS and Xu, Z and Leske, RA and Christian, ER and Cummings, AC and De, Nolfo G and Desai, MI and Fraschetti, F and Giacalone, J and Labrador, A and McComas, DJ and Mitchell, JG and Mitchell, DG and Rankin, J and Schwadron, NA and Shen, M and Wiedenbeck, ME and Bale, SD and Romeo, O and Vourlidas, A},
doi = {1538-4357/adadf7},
journal = {Astrophysical Journal},
title = {Radial Dependence of Ion Fluences in the 2023 July 17 Solar Energetic Particle Event from Parker Solar Probe to STEREO and ACE},
url = {http://dx.doi.org/10.3847/1538-4357/adadf7},
volume = {981},
year = {2025}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - In the latter moments of 2023 July 17, the solar active region (AR) 13363, near the southwestern face of the Sun, was undergoing considerable evolution, which resulted in a significant solar energetic particle (SEP) event measured by Parker Solar Probe’s Integrated Science Investigation of the Sun (ISeIS) and near-Earth spacecraft. Remote observations from GOES and CHASE captured two M5.0+ solar flares that peaked at 23:34 and 00:06 UT from the source region. In tandem, STEREO COR2 first recorded a small, narrow coronal mass ejection (CME) emerging at 22:54 UT and then saw a major halo CME emerge at 23:43 UT with a bright, rapidly expanding core and CME-driven magnetic shock with an estimated speed of ∼1400 km s−1. Parker Solar Probe was positioned at 0.65 au, near-perfectly on the nominal Parker spiral magnetic field line, which connected Earth and the AR for a 537 km s−1 ambient solar wind speed at L1. This fortuitous alignment provided the opportunity to examine how the SEP velocity dispersion, energy spectra, elemental composition, and fluence varied from 0.65 to 1 au along a shared magnetic connection to the Sun. We find a strong radial gradient, which is best characterized for H and He as r−4.0, and most surprisingly, is stronger for O and Fe, which is better described by r−5.7
AU - Muro,GD
AU - Cohen,CMS
AU - Xu,Z
AU - Leske,RA
AU - Christian,ER
AU - Cummings,AC
AU - De,Nolfo G
AU - Desai,MI
AU - Fraschetti,F
AU - Giacalone,J
AU - Labrador,A
AU - McComas,DJ
AU - Mitchell,JG
AU - Mitchell,DG
AU - Rankin,J
AU - Schwadron,NA
AU - Shen,M
AU - Wiedenbeck,ME
AU - Bale,SD
AU - Romeo,O
AU - Vourlidas,A
DO - 1538-4357/adadf7
PY - 2025///
SN - 0004-637X
TI - Radial Dependence of Ion Fluences in the 2023 July 17 Solar Energetic Particle Event from Parker Solar Probe to STEREO and ACE
T2 - Astrophysical Journal
UR - http://dx.doi.org/10.3847/1538-4357/adadf7
VL - 981
ER -