FRB Schema for the CHIME Telescope #217
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| { | ||
| "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/chime/frb.schema.json", | ||
| "alert_kind": "detection", | ||
| "trigger_time": "2024-09-18T07:19:10.765268Z", | ||
| "trigger_time_error": 0.007864319719374001, | ||
| "id": ["427325191"], | ||
| "snr": 12.698559761047363, | ||
| "ra": 346.77850859547, | ||
| "dec": 12.632485229956252, | ||
| "ra_dec_error": [0.503806986334273, 0.598921231135782, 0], | ||
| "dm": 279.422607421875, | ||
| "dm_error": 0.40437427163124, | ||
| "dm_gal_ne_2001_max": 37.78909399600771, | ||
| "dm_gal_ymw_2016_max": 29.94072212814185, | ||
| "trigger_time_inf_freq": "2024-09-18 07:19:03.518831+00:00", | ||
| "trigger_time_inf_freq_error": 0.013108099559195993, | ||
| "importance": 0.9871308604784662, | ||
| "sampling_time": 0.983, | ||
| "bandwidth": 400, | ||
| "centre_frequency": 600, | ||
| "npol": 2, | ||
| "tsys": 50, | ||
| "description": "This alert was generated automatically by the CHIME/FRB Real-time Search Pipeline. Please direct comments, questions, and concerns to Thomas Abbott at [email protected]." | ||
| } |
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| { | ||
| "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/chime/frb.schema.json", | ||
| "alert_type": "retraction", | ||
| "id": ["FRB 20231013B"], | ||
| "trigger_time": "2024-09-18T07:19:10.765268Z", | ||
| "trigger_time_error": 0.007864319719374001, | ||
| "description": "This alert was generated automatically by human-issued retraction. Please direct comments, questions, and concerns to Thomas Abbott at [email protected]." | ||
| } |
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| { | ||||||
| "$id": "https://gcn.nasa.gov/schema/main/gcn/notices/chime/frb.schema.json", | ||||||
| "$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" } | ||||||
| ], | ||||||
| "properties": { | ||||||
| "alert_kind": { | ||||||
| "type": "string", | ||||||
| "description": "The kind of alert (detection or subsequent). Similar meaning to alert_type" | ||||||
| }, | ||||||
| "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" | ||||||
|
There was a problem hiding this comment. Is this different from
Suggested change
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| }, | ||||||
| "dm": { | ||||||
| "type": "number", | ||||||
| "description": "Dispersion measure of the burst [pc/cm^3]" | ||||||
| }, | ||||||
| "dm_error": { | ||||||
| "type": "number", | ||||||
| "description": "Error on the dispersion measure [pc/cm^3]" | ||||||
| }, | ||||||
| "dm_gal_ne_2001_max": { | ||||||
| "type": "number", | ||||||
| "description": "Estimated contribution to the dispersion measure from the Galaxy using the NE2001 model." | ||||||
| }, | ||||||
| "dm_gal_ymw_2016_max": { | ||||||
| "type": "number", | ||||||
| "description": "Estimated contribution to the dispersion measure from the Galaxy using the YMW2016 model." | ||||||
| }, | ||||||
| "trigger_time_error": { | ||||||
|
There was a problem hiding this comment. This property has been added in the core/DateTime.schema.json, please utilize it. |
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| "type": "number", | ||||||
| "description": "Error on the trigger time [s]" | ||||||
| }, | ||||||
| "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]" | ||||||
| }, | ||||||
| "importance": { | ||||||
| "type": "number", | ||||||
| "description": "A machine learning score from 0-1 separating RFI (0) from an astrophysical signal (1)" | ||||||
| }, | ||||||
| "probability": { | ||||||
|
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Suggested change
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| "type": "number", | ||||||
| "description": "A score of known source association probability from poorly associated (0) to confidently associated (1)" | ||||||
| }, | ||||||
| "sampling_time": { | ||||||
| "type": "number", | ||||||
| "description": "The time resolution of the real-time FRB search." | ||||||
|
There was a problem hiding this comment. Thanks for the review, I will correct this to say milliseconds. |
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| }, | ||||||
| "bandwidth": { | ||||||
|
There was a problem hiding this comment. Do you think it's same as There was a problem hiding this comment. Ah, yes, it looks like the same thing. "bandwidth" here is the frequencies over which the instrument observes, so I think it alligns well with the "spectrum" property. I'll update it! Thanks |
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| "type": "number", | ||||||
| "description": "The bandwidth of the real-time FRB search." | ||||||
| }, | ||||||
| "centre_frequency": { | ||||||
| "type": "number", | ||||||
| "description": "The centre frequency of the real-time FRB search." | ||||||
| }, | ||||||
| "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." | ||||||
| }, | ||||||
| "update_message": { | ||||||
| "type": "string", | ||||||
| "description": "Message to be included in an update alert" | ||||||
| } | ||||||
| } | ||||||
| } | ||||||
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| { | ||
| "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/chime/frb.schema.json", | ||
| "alert_kind": "subsequent", | ||
| "known_source": "FRB 20231013B", | ||
| "trigger_time": "2024-09-18T07:19:10.765268Z", | ||
| "trigger_time_error": 0.007864319719374001, | ||
| "id": ["FRB 20240918A"], | ||
| "snr": 12.698559761047363, | ||
| "ra": 346.77850859547, | ||
| "dec": 12.632485229956252, | ||
| "ra_dec_error": [0.503806986334273, 0.598921231135782, 0], | ||
| "dm": 279.422607421875, | ||
| "dm_error": 0.40437427163124, | ||
| "dm_gal_ne_2001_max": 37.78909399600771, | ||
| "dm_gal_ymw_2016_max": 29.94072212814185, | ||
| "trigger_time_inf_freq": "2024-09-18 07:19:03.518831+00:00", | ||
| "trigger_time_inf_freq_error": 0.013108099559195993, | ||
| "importance": 0.9871308604784662, | ||
| "probability": 0.932, | ||
| "sampling_time": 0.983, | ||
| "bandwidth": 400, | ||
| "centre_frequency": 600, | ||
| "npol": 2, | ||
| "tsys": 50, | ||
| "description": "This alert was generated automatically by the CHIME/FRB Real-time Search Pipeline. Please direct comments, questions, and concerns to Thomas Abbott at [email protected]." | ||
| } |
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| { | ||
| "$schema": "https://gcn.nasa.gov/schema/main/gcn/notices/chime/frb.schema.json", | ||
| "alert_type": "update", | ||
| "id": ["FRB 20231013B"], | ||
| "trigger_time": "2024-09-18T07:19:10.765268Z", | ||
| "trigger_time_error": 0.007864319719374001, | ||
| "update_message": "The dispersion measure of FRB 20231013B has been updated to 221.19271850585938 +/- 0.40437427163124 pc/cm^3.", | ||
| "description": "This alert was generated automatically by human-issued retraction. Please direct comments, questions, and concerns to Thomas Abbott at [email protected]." | ||
| } |
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This is updated in the core schema, please utilize it.