{
  "bibcode": "2022GCN.32419....1B",
  "body": "Scott Barthelmy (GSFC), Eric Burns (LSU), Dakota Dutko (GSFC),\nMeredith Gibb (GSFC), Victor Gonzalez-Leon (GSFC), Tess Jaffe\n(GSFC), Ryan Lorek (GSFC/UMBC), Israel Martinez (GSFC/UMD), Tom\nMcGlynn (GSFC), Judy Racusin (GSFC), David Simpson (GSFC), Leo\nSinger (GSFC), Teresa Sheets (GSFC), Alan Smale (GSFC), and\nDongguen Tak (DESY) report on behalf of GCN, TACH, and HEASARC:\n\nWe are pleased to introduce the new General Coordinates Network,\nthe evolution of the Gamma-ray Coordinates Network (now referred\nto as GCN Classic) using modern, open-source, reliable, and secure\nalert distribution technologies that have been established by the\nbroader astronomy community and promoted by the Vera C. Rubin\nObservatory.\n\nWe invite you to join one of our three public Zoom webinars for an\noverview of the new GCN:\n\nAugust 1, 2022 12:00-13:00 UTC (best for Atlantic):\nhttps://bit.ly/3Pt2TH9\n\nAugust 1, 2022 20:00-21:00 UTC (best for Pacific):\nhttps://bit.ly/3IT7Qqc\n\nAugust 2, 2022 04:00-05:00 UTC (best for Asia and Oceania):\nhttps://bit.ly/3v2pNwV\n\nGCN has a redesigned website, https://gcn.nasa.gov and a new\nimproved method of streaming GCN Notices called GCN Classic over\nKafka. All three classic GCN Notice formats (text, VOEvent,\n160-byte binary packet) are now also available over Kafka. This\nnew Kafka streaming service can be used as a drop-in replacement\nfor GCN Classic socket and VOEvent subscribers, with an upcoming\nrelease serving email subscribers.\n\nGCN Classic over Kafka has the following advantages over the\nlegacy delivery methods:\n\n- Self Service: Users can manage their own accounts and\n  subscription settings through the new GCN web site,\n  https://gcn.nasa.gov.\n- Open Standards: Notices are sent using one standard protocol,\n  Apache Kafka.\n- Open Source: Receive GCN Notices using open-source client\n  software.\n- Highly Available: Notices are served by a cluster of redundant\n  Kafka brokers in the cloud.\n- Secure: Notices are protected in transit with SSL/TLS.\n\nThe old GCN Classic web site, https://gcn.gsfc.nasa.gov, and the\nlegacy socket delivery methods will continue to be supported for\nthe foreseeable future. However, starting later this year new\nfeatures and notice types will only be available on the new web\nsite and GCN Kafka, including:\n\n- Self-service configuration of GCN Notice notifications over email\n- Modernization and enhancement of GCN Circulars\n- Unified, searchable GCN Notice and Circular archive integrating\n  the features of the GCN Viewer\n  (https://heasarc.gsfc.nasa.gov/tachgcn, GCN Circular 31036)\n\nFor questions, issues, or bug reports, please contact us via:\n\nHEASARC feedback form:\nhttps://heasarc.gsfc.nasa.gov/cgi-bin/Feedback?selected=kafkagcn\n\nGitHub issue tracker:\nhttps://github.com/nasa-gcn/gcn.nasa.gov/issues\n\n\n[CORRECTION: de-mangled links that were processed through Microsoft\nOutlook's Safe Links]",
  "circularId": 32419,
  "createdOn": 1658351246000,
  "email": "judith.racusin@nasa.gov",
  "subject": "Introducing new GCN Kafka broker and web site for transient alerts, https://gcn.nasa.gov",
  "submitter": "Judith Racusin at GSFC  <judith.racusin@nasa.gov>"
}