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Title: A STEREO Survey of Magnetic Cloud Coronal Mass Ejections Observed at Earth in 2008–2012

Abstract

We identify coronal mass ejections (CMEs) associated with magnetic clouds (MCs) observed near Earth by the Wind spacecraft from 2008 to mid-2012, a time period when the two STEREO spacecraft were well positioned to study Earth-directed CMEs. We find 31 out of 48 Wind MCs during this period can be clearly connected with a CME that is trackable in STEREO imagery all the way from the Sun to near 1 au. For these events, we perform full 3D reconstructions of the CME structure and kinematics, assuming a flux rope (FR) morphology for the CME shape, considering the full complement of STEREO and SOHO imaging constraints. We find that the FR orientations and sizes inferred from imaging are not well correlated with MC orientations and sizes inferred from the Wind data. However, velocities within the MC region are reproduced reasonably well by the image-based reconstruction. Our kinematic measurements are used to provide simple prescriptions for predicting CME arrival times at Earth, provided for a range of distances from the Sun where CME velocity measurements might be made. Finally, we discuss the differences in the morphology and kinematics of CME FRs associated with different surface phenomena (flares, filament eruptions, or no surfacemore » activity).« less

Authors:
; ; ; ;  [1]; ;  [2]
  1. Naval Research Laboratory, Space Science Division, Washington, DC 20375 (United States)
  2. Heliophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)
Publication Date:
OSTI Identifier:
22661212
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal, Supplement Series; Journal Volume: 229; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CLOUDS; ERUPTION; FILAMENTS; IMAGES; MASS; MORPHOLOGY; ORIENTATION; SOLAR CORONA; SOLAR WIND; SPACE VEHICLES; SUN; SURFACES

Citation Formats

Wood, Brian E., Wu, Chin-Chun, Howard, Russell A., Linton, Mark G., Socker, Dennis G., Lepping, Ronald P., and Nieves-Chinchilla, Teresa, E-mail: brian.wood@nrl.navy.mil. A STEREO Survey of Magnetic Cloud Coronal Mass Ejections Observed at Earth in 2008–2012. United States: N. p., 2017. Web. doi:10.3847/1538-4365/229/2/29.
Wood, Brian E., Wu, Chin-Chun, Howard, Russell A., Linton, Mark G., Socker, Dennis G., Lepping, Ronald P., & Nieves-Chinchilla, Teresa, E-mail: brian.wood@nrl.navy.mil. A STEREO Survey of Magnetic Cloud Coronal Mass Ejections Observed at Earth in 2008–2012. United States. doi:10.3847/1538-4365/229/2/29.
Wood, Brian E., Wu, Chin-Chun, Howard, Russell A., Linton, Mark G., Socker, Dennis G., Lepping, Ronald P., and Nieves-Chinchilla, Teresa, E-mail: brian.wood@nrl.navy.mil. Sat . "A STEREO Survey of Magnetic Cloud Coronal Mass Ejections Observed at Earth in 2008–2012". United States. doi:10.3847/1538-4365/229/2/29.
@article{osti_22661212,
title = {A STEREO Survey of Magnetic Cloud Coronal Mass Ejections Observed at Earth in 2008–2012},
author = {Wood, Brian E. and Wu, Chin-Chun and Howard, Russell A. and Linton, Mark G. and Socker, Dennis G. and Lepping, Ronald P. and Nieves-Chinchilla, Teresa, E-mail: brian.wood@nrl.navy.mil},
abstractNote = {We identify coronal mass ejections (CMEs) associated with magnetic clouds (MCs) observed near Earth by the Wind spacecraft from 2008 to mid-2012, a time period when the two STEREO spacecraft were well positioned to study Earth-directed CMEs. We find 31 out of 48 Wind MCs during this period can be clearly connected with a CME that is trackable in STEREO imagery all the way from the Sun to near 1 au. For these events, we perform full 3D reconstructions of the CME structure and kinematics, assuming a flux rope (FR) morphology for the CME shape, considering the full complement of STEREO and SOHO imaging constraints. We find that the FR orientations and sizes inferred from imaging are not well correlated with MC orientations and sizes inferred from the Wind data. However, velocities within the MC region are reproduced reasonably well by the image-based reconstruction. Our kinematic measurements are used to provide simple prescriptions for predicting CME arrival times at Earth, provided for a range of distances from the Sun where CME velocity measurements might be made. Finally, we discuss the differences in the morphology and kinematics of CME FRs associated with different surface phenomena (flares, filament eruptions, or no surface activity).},
doi = {10.3847/1538-4365/229/2/29},
journal = {Astrophysical Journal, Supplement Series},
number = 2,
volume = 229,
place = {United States},
year = {Sat Apr 01 00:00:00 EDT 2017},
month = {Sat Apr 01 00:00:00 EDT 2017}
}