Abstract
The citizen Continental-America Telescopic Eclipse (CATE) Experiment was a new type of citizen science experiment designed to capture a time sequence of white-light coronal observations during totality from 17:16 to 18:48 UT on 2017 August 21. Using identical instruments the CATE group imaged the inner corona from 1 to 2.1 RSun with 1 43 pixels at a cadence of 2.1 s. A slow coronal mass ejection (CME) started on the SW limb of the Sun before the total eclipse began. An analysis of CATE data from 17:22 to 17:39 UT maps the spatial distribution of coronal flow velocities from about 1.2 to 2.1 RSun, and shows the CME material accelerates from about 0 to 200 km s−1 across this part of the corona. This CME is observed by LASCO C2 at 3.1–13 RSun with a constant speed of 254 km s−1. The CATE and LASCO observations are not fit by either constant acceleration nor spatially uniform velocity change, and so the CME acceleration mechanism must produce variable acceleration in this region of the corona.
| Original language | English (US) |
|---|---|
| Article number | 014201 |
| Journal | Publications of the Astronomical Society of the Pacific |
| Volume | 132 |
| Issue number | 1007 |
| DOIs | |
| State | Published - Jan 2020 |
Keywords
- Sun: corona
- Sun: coronal mass ejections (CMEs)
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science
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In: Publications of the Astronomical Society of the Pacific, Vol. 132, No. 1007, 014201, 01.2020.
Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Acceleration of coronal mass ejection plasma in the low corona as measured by the citizen CATE experiment
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AU - Baer, Robert
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AU - Gelderman, Richard
AU - Ursache, Andrei
AU - Elmore, David
AU - Mitchell, Adrianna
AU - Kovac, Sarah
AU - Hare, Honor
AU - McKay, Myles
AU - Jensen, Logan
AU - Watson, Zachary
AU - Conley, Mike
AU - Powers, Lynn
AU - Lazarova, Marianna
AU - Wright, Joseph
AU - Young, David
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AU - Hart, C. Alexandra
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AU - Penn, Debbie
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AU - Hall-Conley, Geri
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AU - Lighthill, Richard
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AU - Anderson, Mine
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AU - Smith, Sonna
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AU - Birriel, Ignacio
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AU - Thompson, Erin
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N1 - Publisher Copyright: © 2019. The Astronomical Society of the Pacific. Printed in the U.S.A.
PY - 2020/1
Y1 - 2020/1
N2 - The citizen Continental-America Telescopic Eclipse (CATE) Experiment was a new type of citizen science experiment designed to capture a time sequence of white-light coronal observations during totality from 17:16 to 18:48 UT on 2017 August 21. Using identical instruments the CATE group imaged the inner corona from 1 to 2.1 RSun with 1 43 pixels at a cadence of 2.1 s. A slow coronal mass ejection (CME) started on the SW limb of the Sun before the total eclipse began. An analysis of CATE data from 17:22 to 17:39 UT maps the spatial distribution of coronal flow velocities from about 1.2 to 2.1 RSun, and shows the CME material accelerates from about 0 to 200 km s−1 across this part of the corona. This CME is observed by LASCO C2 at 3.1–13 RSun with a constant speed of 254 km s−1. The CATE and LASCO observations are not fit by either constant acceleration nor spatially uniform velocity change, and so the CME acceleration mechanism must produce variable acceleration in this region of the corona.
AB - The citizen Continental-America Telescopic Eclipse (CATE) Experiment was a new type of citizen science experiment designed to capture a time sequence of white-light coronal observations during totality from 17:16 to 18:48 UT on 2017 August 21. Using identical instruments the CATE group imaged the inner corona from 1 to 2.1 RSun with 1 43 pixels at a cadence of 2.1 s. A slow coronal mass ejection (CME) started on the SW limb of the Sun before the total eclipse began. An analysis of CATE data from 17:22 to 17:39 UT maps the spatial distribution of coronal flow velocities from about 1.2 to 2.1 RSun, and shows the CME material accelerates from about 0 to 200 km s−1 across this part of the corona. This CME is observed by LASCO C2 at 3.1–13 RSun with a constant speed of 254 km s−1. The CATE and LASCO observations are not fit by either constant acceleration nor spatially uniform velocity change, and so the CME acceleration mechanism must produce variable acceleration in this region of the corona.
KW - Sun: corona
KW - Sun: coronal mass ejections (CMEs)
UR - http://www.scopus.com/inward/record.url?scp=85081281737&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85081281737&partnerID=8YFLogxK
U2 - 10.1088/1538-3873/ab558c
DO - 10.1088/1538-3873/ab558c
M3 - Article
AN - SCOPUS:85081281737
SN - 0004-6280
VL - 132
JO - Publications of the Astronomical Society of the Pacific
JF - Publications of the Astronomical Society of the Pacific
IS - 1007
M1 - 014201
ER -