XMM-Newton News #270, 17 August 2023 CONTENTS XMM-Newton Announcement of Opportunity (AO-23) - Letter of Invitation by the ESA Director of Science <#1> - Key milestones for this announcement <#2> - Timeline for Phase II proposal submission <#3> NEWS #1 Letter of Invitation by the ESA Director of Science Dear Colleague, I am pleased to invite you to respond to the Twenty-third "Announcement of Opportunity" to submit proposals for observations to be performed with the XMM-Newton observatory. This Announcement solicits proposals to be carried out between May 2024 and April 2025. Proposers from institutes located worldwide are welcome to participate. All proposals will be subject to peer review by the XMM-Newton Observing Time Allocation Committee. The detailed schedule of milestones of the announcement, the required software tools and the documentation are available from: http://www.cosmos.esa.int/web/xmm-newton/ao23 I would appreciate if you would distribute this invitation to interested colleagues. I wish you every success in using the XMM-Newton observatory. Yours sincerely, Prof. Carole Mundell Director of Science #2 Key milestones for this announcement Announcement of Opportunity 17 August 2023 Due date for Proposals 6 October 2023 (12:00 UT) Final OTAC approved program late December 2023 #3 Timeline for Phase II proposal submission After the cycle of proposal submission and selection, the observation details for successful proposals must be entered into the observatory system. This is done during "Phase II" proposal submission. Find below for your information the anticipated timeline for that eventual Phase II: Start of Phase II proposal submission 9 January 2024 Closure of Phase II proposal submission 2 February 2024 XMM-Newton Science Operations Centre at ESA's European Space Astronomy Centre, Villanueva de la Cañada, Madrid, Spain SOC Home: Helpdesk Web Interface: Contact Helpdesk: Newsletter Archive: