Krizmanic, John2018-12-042018-12-042017-03-17http://hdl.handle.net/11603/1216426 pagesen-USPublic Domain Mark 1.0This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Lawhttp://creativecommons.org/publicdomain/mark/1.0/POEMMA-Probemulti-messengerastrophysicsCRs and neutrinosText