Funding for this research was provided by:
Division of Physics (PHY-1607130, PHY-1250636)
Division of Astronomical Sciences (AST-1716715)
National Aeronautics and Space Administration (NNX16AB98G, 80NSSC17M0041)
Article History
Received: 15 January 2018
Accepted: 5 March 2018
First Online: 3 April 2018