Chapman, S. C. https://orcid.org/0000-0003-0053-1584
McIntosh, S. W. https://orcid.org/0000-0002-7369-1776
Leamon, R. J. https://orcid.org/0000-0002-6811-5862
Watkins, N. W. https://orcid.org/0000-0003-4484-6588
Funding for this research was provided by:
DOD ∣ USAF ∣ AFMC ∣ AFOSR ∣ European Office of Aerospace Research and Development (FA9550-17-1-0054)
NSF (1852977)
Article Title: The Sun’s Magnetic (Hale) Cycle and 27 Day Recurrences in the aa Geomagnetic Index
Journal Title: The Astrophysical Journal
Article Type: paper
Copyright Information: © 2021. The American Astronomical Society. All rights reserved.
Publication dates
Date Received: 2021-01-08
Date Accepted: 2021-05-27
Online publication date: 2021-08-17