KM3NeT Alerts

Candidate neutrino observation reported from the KM3NeT online analysis pipelines.

View the source on GitHub

Properties

* = required

Name	Type	Description
$schema
pipeline	string	Pipeline issuing this notice: either exceptional (high-energy) event or multiple coincident events.
p_value	number	Occurence probability of the alert reported.
src_error_50	number	50% CL uncertainty region described as a circle with a radius [deg].
event_details	array	List and details of KM3NeT events involved in the alert.
potential_counterpart	boolean	Flag indicating positive result of our counterpart search (true), or absence of search/of result (false).
counterpart_info	array \| string	No search / No match / Array of known astrophysical sources or transient present in the KM3NeT event RoI (not exhaustive list).

Properties from all of the following:

These properties are inherited using the allOf syntax. In order to validate, all of the following schemas must be individually valid, based on their respective properties. See allOf for more information.

Name		Description
Alert.schema.json		neutrino schema object (click to expand)
AdditionalInfo.schema.json		core schema object (click to expand)

Locally defined sub-schemas

These sub-schemas are defined locally within the same .schema.json file as the current schema definition.

Name	Type	Description
km3event	object	The properties of the KM3NeT events that contributed to this alert.
knownsrc	object	Properties of known sources found in the KM3NeT event region of interest.

Example

{
  "$schema": "https://gcn.nasa.gov/schema/v6.1.0/gcn/notices/km3net/alert.schema.json",
  "messenger": "Neutrino",
  "mission": "KM3NeT",
  "instrument": "ORCA024",
  "pipeline": "orca_HE",
  "alert_tense": "current",
  "alert_type": "initial",
  "record_number": 1,
  "alert_datetime": "2024-09-01T12:01:00.00Z",
  "additional_info": "Observation from single pipeline. Analysis tuned to select 1 event/month in average. Track only analysis w/ Up-going selection.",
  "id": "1",
  "event_name": "KM3-240901A",
  "trigger_time": "2024-09-01T01:16:47.0Z",
  "ra": 10.82,
  "dec": 20.01,
  "ra_dec_error": 0.9,
  "healpix_url": "https://opendata.km3net.de/",
  "far": 8.029e-8,
  "alert_topology": "Track",
  "number_of_events": 1,
  "src_error_50": 0.49,
  "event_details": [
    {
      "id": "km3.234.23492.58968.763",
      "trigger_time": "2024-09-01T01:16:47.0Z",
      "ra": 10.82,
      "dec": 20.01,
      "ra_dec_error": 0.9,
      "cos_zenith": 0.01,
      "prob_evt_topology": "track",
      "energy_measured": 120000
    }
  ],
  "potential_counterpart": false,
  "counterpart_info": "No search"
}