WE PROPOSE THE SIXTH NICER OBSERVATION OF RX J0806.4-4123 TO COMPLETE THE TIMING CAMPAIGN STARTED IN CYCLE 1. THE GOAL IS TO OBTAIN AN ACCURATE TIMING SOLUTION FOR THIS ISOLATED NEUTRON STAR. PREVIOUS CONSTRAINTS BY XMM-NEWTON YIELDED A FREQUENCY DER
$20,153FY2021National Aeronautics and Space AdministrationNASA
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