CHIME Fast Radio Burst Notices The CHIME Team and the GCN Team are pleased to announce the availability of a new CHIME Fast Radio Burst (FRB) notice type via the new GCN in JSON format. We welcome this new transient type to the GCN community and encourage follow-up observations. These notices can be streamed via Kafka. They are not available via GCN Classic. The Canadian Hydrogen Intensity Mapping Experiment (CHIME) is a transit radio telescope located in Penticton, BC, Canada. It consists of 4 semi-cylindrical reflectors, each with 2000 square meters of collecting area and 256 dual-polarization antennas. The telescope observes between 400 MHz and 800 MHz and covers an instantaneous field of view of ~200 square degrees. CHIME houses several electronic backends, which are tailored for specific scientific goals, such as generating cosmological maps of hydrogen density, detecting Fast Radio Bursts, and observing and timing pulsars. In particular, the FRB backend operates at ~1 ms time resolution and ~ 0.4 MHz frequency resolution. The new CHIME notices provide FRB detection details including ~arcminute localization with a latency of ~1 minute. The detection rate is ~600 per year. Notices will be distributed on the Kafka topic: gcn.notices.chime.frb A more extensive description of the information provided in these new notices is available at https://gcn.nasa.gov/missions/chime. ______________________________________ DSA-110 Fast Radio Burst Notices The DSA-110 Team and the GCN Team are pleased to announce the availability of DSA-110 notice types via the new GCN in JSON format. These notices can be streamed via Kafka. The Deep Synoptic Array-110 (DSA-110) is a radio interferometer purpose-built for fast radio burst (FRB) detection and direct localization. The array is located at the Owens Valley Radio Observatory (OVRO) comprised of 96 4.65-m dishes that continuously survey for FRBs at frequencies between 1280 to 1530 MHz. Over a three-year science program, the DSA-110 will deliver a sample of more than 300 FRBs, each localized to regions ~1 arcminute radius within 1 minute of detection. This is made possible by a suite of novel instrumentation, including precisely engineered antennas, ultra-low noise ambient-temperature receivers, and a powerful real-time, autonomous data-analysis system. DSA-110 notices provide FRB detection and localization distributed on the Kafka topic: gcn.notices.dsa110.frb See the DSA-110 mission page (https://gcn.nasa.gov/missions/dsa_110) for a more extensive description of the information provided in these new notices. ______________________________________ IceCube Gold/Bronze Track Alert Notices The IceCube Team and the GCN Team are pleased to announce the availability of a new IceCube Notice type via the new GCN in JSON format for Gold/Bronze Track alerts. These notices can be streamed via Kafka. The information included in the JSON-format Notices largely overlaps with that in GCN Classic with the addition of a URL for multi-order probability maps. AMON_ICECUBE_GOLD and AMON_ICECUBE_BRONZE notices remain available via GCN Classic and GCN Classic over Kafka. IceCube is a cubic-kilometer Cherenkov particle detector deployed in the Antarctic ice beneath the Amundsen-Scott South Pole Station. IceCube detects neutrinos by observing the light produced by relativistic charged particles created by neutrino interactions in or near the instrumented volume of ice. The new Gold/Bronze Notices provide high-energy (TeV-PeV) track-like alerts with radius angular resolution. Events are classified into Gold and Bronze based on their likelihood of being astrophysical. Two GCN Notices are sent for each event - one corresponding to the preliminary reconstruction and one corresponding to the revised reconstruction. Gold and Bronze events occur at a rate of 10 and 16 per year, respectively, with a latency of 0.5-1 minute from detection. These new alerts are distributed via GCN Kafka on the topic: gcn.notices.icecube.gold_bronze_track_alerts The IceCube documentation (https://gcn.nasa.gov/missions/icecube) has been extensively updated. It now includes details on the new information released with the updated schema, as well as explanations of the quantities listed in the FITS file headers for the multi-order probability maps. ______________________________________ Schema v6.1.1 GCN Schema v6.1.1 is available with recent changes including new Notice types (Release Notes; https://github.com/nasa-gcn/gcn-schema/releases/tag/v6.1.1). 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...