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Structure and Dynamics of the Inner Corona Measured from the DEB Initiative 2024 Eclipse Image Sequence

  • Authors: Matthew J Penn, Robert Baer, Chris Mandrell, Corinne Brevik, Castor Fu, Mike Conley, Richard Danley, Harvey Henson, David Iadevaia, Jonathan Mangin, Chris Midden, Brodye Miller, Claude Plymate, Teresa Plymate, Zack Stockbridge, Kevin Rasso, Autumn Awalt, Avery Awalt, Gracie Awalt, Josh Awalt, Lauree Rasso, Mike Chartrand, Noah Lambert, Zoee Rasso, Kevin Cobble, Amelia Menezes, Andrew Yu, Felix Mei, Hanson Du, Ramesh Pattar, Vishrut Kumaran, Robert Auburger, Brian J. Drake, Seth Antozzi, Chloe Rectanus, Grayson Garner, Michael Weiss, Bill Kloepping, Deborah Grubis, Maryanne Angliongto, Ashvik Chilakala, Carl Buz McCullough, Mark Bremer, Christina Adair, Amber Huffman, Charon Adair, Gabbie Graham, Nick Tillerson, Fred Isberner, Candy Isberner, Harry Treece, Lisa Sikorski, Sage Julian-Fralish, Heidi Schran, Addison Greene, Bibodh Baral, Crow Ely, Nolan Hodgson, Olive Blackmar Rice, Olivia Andrews, Olivia Freeman, Quinn Donnelly, Serenity Prince Kirk, Carmen Tran, Brianna Blanchard, Kyan West, Landon Bevier, Murali Saravanan, Jeremy Wright

Matthew J Penn et al 2026 The Astrophysical Journal Letters 1006 .

  • Provider: AAS Journals

Caption: Figure 2.

Radial Intensity gradients. The radial intensity gradients as measured by the summed HDR images from 11 DEB sites are shown in this plot. Intensities diverge below 1.2 solar radii because of the changing projected location of the lunar limb combined with our azimuthal averaging, and different atmospheric scattering likely causes the divergence above 4 solar radii. Small intensity drops above 4 solar radii at the 3% level are HDR subframe alignment artifacts. The radial intensity gradient from B. Boe et al. (2025) is used to normalize the DEB data to solar units and shows excellent agreement up to about 3.7 solar radii, and the H. C. van de Hulst (1950) F corona brightness is also shown. In this work, we do not attempt to photometrically correct the DEB intensities above 3.7 solar radii, which may suffer from atmospheric or instrumental stray light.

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