XRISM European Guest Observer Program - XRISM
In consideration of ESA’s contribution to XRISM, not less than 8% of the total Guest Observing Time, or an equivalent return as mutually agreed, shall be allocated to ESA. This time will be allocated by ESA through a competitive process open to the scientific community of the European member states. The corresponding Announcement of Opportunity will be advertised through this web page in due time (current baseline: two months after launch).