{
  "$id": "https://gcn.nasa.gov/schema/v6.1.0/gcn/notices/chime/frb.schema.json",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "CHIME/FRB Alert",
  "description": "Fast radio burst alert from the Canadian Hydrogen Intensity Mapping Experiment.",
  "type": "object",
  "allOf": [
    { "$ref": "../core/Alert.schema.json" },
    { "$ref": "../core/Reporter.schema.json" },
    { "$ref": "../core/Event.schema.json" },
    { "$ref": "../core/DateTime.schema.json" },
    { "$ref": "../core/Localization.schema.json" },
    { "$ref": "../core/DispersionMeasure.schema.json" }
  ],
  "properties": {
    "known_source": {
      "type": "string",
      "description": "Transient Name Server name of the known source (if a repeating FRB source)"
    },
    "snr": {
      "type": "number",
      "description": "Signal-to-noise ratio of the burst [dimensionless]"
    },
    "trigger_time_inf_freq": {
      "type": "string",
      "description": "Time of the trigger at infinite frequency [ISO 8601]"
    },
    "trigger_time_inf_freq_error": {
      "type": "number",
      "description": "Error on the trigger time at infinite frequency [s]"
    },
    "sampling_time": {
      "type": "number",
      "description": "Time resolution of the FRB search at the host observatory [ms]"
    },
    "importance": {
      "type": "number",
      "description": "A machine learning score separating RFI (0) from an astrophysical signal (1)"
    },
    "association_probability": {
      "type": "number",
      "description": "A score of known source association probability from poorly associated (0) to confidently associated (1)"
    },
    "npol": {
      "type": "number",
      "description": "The number of polarizations of the real-time FRB search"
    },
    "tsys": {
      "type": "number",
      "description": "The system temperature of the real-time FRB search [K]"
    },
    "update_message": {
      "type": "string",
      "description": "Message to be included in an update alert"
    },
    "dm_gal_ne_2001_max": {
      "type": "number",
      "description": "Estimated contribution to the dispersion measure [pc/cm^3] from the Galaxy using the NE2001 model."
    }
  }
}