Issue #2 - XMM-Newton 26th Announcement of Opportunity

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• Subject: Issue #2 - XMM-Newton 26th Announcement of Opportunity
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• Date: Wed, 19 Aug 2026 17:28:00 +0000
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• Thread-topic: 2 - XMM-Newton 26th Announcement of Opportunity

XMM-Newton GOF-SOC News Issue #2 | August 19th, 2026 New Announcements XMM-Newton Twenty-sixth Announcement of Opportunity (AO-26) Effective 19 August 2026, XMM-Newton observing proposals are solicited in response to the Twenty-sixth Announcement of Opportunity, AO-26: ESA XMM-Newton AO-26 Information The XMM-Newton Project has Joint Programmes with the VLT, NRAO (i.e., VLA, GBT, VLBA), HST, JWST, HESS and MAGIC, as well as with other X-ray missions: Chandra, IXPE (New!), NuSTAR, Swift and XRISM. The XMM-Newton Project may additionally award observation time to these facilities via the current AO. A letter from ESA's Director of Science, inviting you to participate in the Twenty-sixth Call for Proposals, is available in electronic form at: ESA XMM-Newton AO26 Invitation U.S. Principal Investigators should view the following announcement letter for additional information: NASA XMM-Newton AO26 Announcement The deadline for XMM-Newton AO-26 proposal submission is Friday 9 October 2026, 12:00 UT. Past News Issue #1: First Edition of The GOF-SOC Bulletin Welcome to the first joint XMM-Newton General Observer Facility (GOF) and Science Operations Centre (SOC) bulletin! Bulletins will be released on a quarterly basis. Highlights from this issue include: AO-26 Call for Proposals, Release of the 5XMM-DR15 Catalogue, The X-Ray Universe 2026 Conference, Extension of Mission Operations, Recent Science Successes, New NASA Disclosure Form Requirements, and an opportunity to share your science with us! Read the Bulletin Here:XMM-Newton GOF-SOC July Bulletin Questions? Contact us at: NASA Helpdesk or at ESA Helpdesk A Service of the XMM-Newton General Observer Facility Team

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