MAXI Known and Unknown X-ray Transient Notices The MAXI Team (http://maxi.riken.jp/top/) and the GCN Team are pleased to announce the availability of MAXI Notices via the new GCN in JSON format. MAXI is a wide-field X-ray telescope designed to perform an all-sky survey onboard the ISS. MAXI provides Notices for both known and unknown source detections by Gas Slit Camera (GSC; https://iss.jaxa.jp/en/kiboexp/ef/maxi/). The known source Notice is used when the detected event is associated with a known X-ray source or cataloged object. The unknown source Notice is used when the detected event is not immediately associated with a known source and is reported as a new or unidentified transient candidate. Depending on the available localization information, an unknown source Notice may report no position uncertainty, a circular uncertainty region, an elliptical uncertainty region, or rectangular error-region corners. Both Notice types provide basic alert metadata, event timing, sky position, flux information, and detection information. MAXI notices are published on the GCN Kafka topics gcn.notices.maxi.gsc.known and gcn.notices.maxi.gsc.unknown. See the MAXI mission page (https://gcn.nasa.gov/missions/maxi) for a more extensive description of the information provided in these new notices. Schema v7.2.0 GCN Schema v7.2.0 is available with recent changes including new Notice types (Release Notes; https://github.com/nasa-gcn/gcn-schema/releases/tag/v7.2.0). For more details on this new feature and an archive of GCN news and announcements, see https://gcn.nasa.gov/news. For questions, issues, or bug reports, please contact us via: - Contact form: https://gcn.nasa.gov/contact - GitHub issue tracker: https://github.com/nasa-gcn/gcn.nasa.gov/issues --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...