Joint Observations with Swift removed from IXPE GO Cycle 4
The IXPE Guest Observer (GO) Program solicits proposals for investigations in any area of astrophysics (not constrained to IXPE’s prime science areas). Individuals may submit proposals for observations that will advance the IXPE mission science return. Observing proposals may be for “standard,” “Target-of-Opportunity (ToO)”, “Large Program (LP)” or “Multi-cycle” observations. IXPE anticipates…
On September 8, 2026, it was announced that Joint Observations with Swift would no longer be part of IXPE GO Cycle 4. The deadline for submitting Phase-1 Proposals remained unchanged, set for September 17, 2026. The IXPE Guest Observer Program accepts proposals for investigations across various astrophysics fields, not limited to IXPE's primary science interests.
High priority triggers are expected to begin within 9 days of a trigger, while medium priority triggers are anticipated to start between 9 days and 4 weeks after a trigger.
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