Acceleration of Coronal Mass Ejection Plasma in the Low Corona as Measured by the Citizen CATE Experiment Matthew J. Penn , Robert Baer , Donald Walter , Michael Pierce , Richard Gelderman , Andrei Ursache , David Elmore , Adrianna Mitchell , Sarah Kovac , Honor Hare , Myles Mckay , Logan Jensen , Zachary Watson , Mike Conley , Lynn Powers , Marianna Lazarova , Joseph Wright , David Young , Fred Isberner , C. Alexandra Hart , N. R. Sheeley , Debbie Penn , Kate Allen-Penn , Bruce Alder , Ryan Alder , Geri Hall-Conley , David Gerdes , Katherine Weber , Jeffrey Johnson , Gerald Matzek , Steven Somes , Rob Sobnosky , Robert McGowen , Michael Meo , Damani Proctor , Charlie Wessinger , Jeannine Schilling , Jay Kerr , Alexander Beltzer-Sweeney , Alex Falatoun , David Higgins , Grady Boyce , Jared Hettick , Philip Blanco , Scott Dixon , Sepehr Ardebilianfard , Pat Boyce , Richard Lighthill , Denese Lighthill , David Anderson , Mine Anderson , Thomas Schad , Sonna Smith , Declan Jensen , Anthony Allen , Donavan Smith , Gage Brandon , Joe Earp , Jane Earp , Bob Blair , Chuck F. Claver , Jennifer A. Claver , Ryan H. Claver , Danielle Hoops , Esteban Rivera , Llanee Gibson , Martin Hiner , Rein Lann , Shaedyn Miller , Burton Briggs , Karan Davis , Brian Jackson , Kaleb Kautzsch , Wesley Sandidge , Russell Lucas , Duane Gregg , Julia Kamenetzky , Tiffany Rivera , Joe Shaw , Bryan Scherrer , Dylan Sandbak , Richard McFate , Wilson Harris , Zachery Brasier , Stephen McNeil , Jack Jensen , Makai Jensen , Mason Moore , Alexandria Temple , Thomas Vanderhorst , Richard Kautz , Orion Bellorado , Lavor R. Jenkins , Corey Pantuso , Marley Carey , Josh Byrnes , Kyle Scholtens , Julian Web , Brain Baker , Katie Barngrover , Drew Hathaway , Kallen Smith , Kellyn Chandler , Lydia Hinkle , Ione Chandler , Galen Gisler , Jack Benner , Madison Mas , Maya Rogers , Prescott Moore , Elijah Pelofske , Stephen Gulley , Beth Short , Isabel Crooker , Jennifer Hammock , Katsina Cardenas , Kateri Cardenas , Jennifer Wellman , Mark Roy , Joe Meyer , Jalynne Brough , Kameron Brough , Tim Nelson , Zack Nelson , Caleb Russell , Theresa Bautz , Eric Weitzel , Michele Wistisen , Shae Aagard , Zachary Whipps , Logan Neuroth , Dawson Poste , Connor Worthen , Sanjay Gosain , Mark Steward , Vanshita Gosain , Ruchi Gosain , Janet Jorgensen , Eleanor Doucette , Reba Doucette , Elliott Iwen , Alexus Cochran , James Stith , Doug Scribner , Austen Kenney , Kolby Pisciotti , Irene Pease , Samuel Cynamon , Charles Cynamon , Dawn Cynamon , Bart Tolbert , Jean A. Dupree , Jeremy Weremeichik , Nathan Pindell , Kristen Stives , Thomas K. Simacek , Yolanta G. Simacek , Anne L. Simacek , Wayne Boeck , Andreea Boeck , Austin Ryan , Gabriel Wierzorec , Dimitri Klebe , Bryan Costanza , Arnie Cerny , Trevor Schmale , Tessa Hoffman , Sam Streeter , Jack Erickson , Michele McClellan , Ella Erickson , Brynn Brettell , Savannah Shoffner , Emilie McClellan , Julie VanVoorhis , Cole Bramhall , Daniel Stelly , Bentley Bee , Bruno Acevedo , Madison Kroeger , Ben Trumpenski , Nolan Sump , Liam Brook , Jagert Ernzen , Jessica Lewis , Ryan Maderak , Charles Kennedy , David Dembinski , Rita Wright , Michael Foster , Mohammad Ahmadbasir , Monty Laycox , James Foster , Ethan Orr , Ashley Staab , Angela Speck , Sean Baldridge , Lucy Kegley , Jordan Bavlnka , Thomas Ballew , Bruce Callen , Gregory Ojakangas , Mark Bremer , Maryanne Angliongto , Mark Redecker , Chris Bremer , Peggy Hill , Michael Rodgers , Jordan Duncan , Sam Fincher , Ben Nielsen , Samantha Hasler , Taylor Shivelbine , Tyler Howard , Chris Midden , Sean Patrick , Kerry Glenn , Chris Mandrell , Kyle Dawson , Margaret Cortez , Alyssa Levsky , Dinuka Gallaba , Mason Perrone , Jasmyn Taylor , Padma A. Yanamandra-Fisher , Howard Harper , Lindsay Adams , Michaela Springer , BillyJoe Menard , Dylan Boggs , Caitlin Lynch , Jacob Watson , Andi York , David Matthews , Kiley Brown , Dylan Garrison , Jonathan Mangin , Isaac Mangin , Jennifer Birriel , Ignacio Birriel , Capp Yess , Jesse Anderson , Ethan Caudill , Allyn Smith , Spencer Buckner , Russ Longhurst , Ben Fagan , Christian Nations , Jeffrey DiMatties , Patricia Thompson , David Garrison , Thomas Garrison , William Garrison , Mary Kidd , Maria Baker , Mary-Beth Ledford , Amy Winebarger , Michael Freed , Morgyn Church , Jim Dickens , Bob Anderson , Ned Smith , Lynne Dorsey , Doug Justice , Daniel Zavala , Zach Stockbridge , Sean Brittain , Stanley Jensen , Harrison Leiendecker , Erin Thompson , Michelle Deady , Kelly Quinn-Hughes , David Slimmer , Valerie Granger , Michael LaRoche , Serena Hill LaRoche , Rachel Manspeaker , Peter Nguyen , Daniel Smith , Jim Payne , Jerry Zissett , Arianna M. Roberts , Gabrielle W. Roberts , Harrison Roberts , Amy Riddle , Corina Ursache , Elena Ursache PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC（2020）
摘要
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.
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关键词
Sun: corona, Sun: coronal mass ejections (CMEs)
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