THE 4TH CATALOG OF GAMMA RAY SOURCES DISCOVERED BY FERMI CONTAINS ABOUT 1/3RD UNASSOCIATED SOURCES. A CHALLENGE TO IDENTIFYING SUCH SOURCES ARE LARGE POSITIONAL UNCERTAINTIES ASSOCIATED WITH THEM (A FEW ARCMINS).
$50,000FY2021National Aeronautics and Space AdministrationNASA
The Pennsylvania State University