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Cancellation of the planned NuSTAR high-cadence monitoring campaign of EP J223759.5+531421

ATel #17913; George Younes (UMBC/NASA-GSFC)
on 20 Jul 2026; 17:15 UT
Credential Certification: George Younes (gyounes@umbc.edu)

Subjects: X-ray, Neutron Star, Transient, Pulsar, Magnetar

We report that the previously planned high-cadence NuSTAR DDT monitoring campaign of the magnetar candidate EP J223759.5+531421 (EP260628c; ATels #17904) will not proceed.

We regret any confusion or inconvenience this change may have caused. Any questions can be addressed to the NuSTAR team at nustar-help@srl.caltech.edu.