From 7a1229de3ff2dfafcbe3de4688a81b1cc6fe15b0 Mon Sep 17 00:00:00 2001 From: shb46 <131036708+shb46@users.noreply.github.com> Date: Tue, 1 Oct 2024 17:24:52 -0500 Subject: [PATCH] Update README.md --- gcn/notices/fermi/gbm/README.md | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/gcn/notices/fermi/gbm/README.md b/gcn/notices/fermi/gbm/README.md index 89edbe0d..84277b45 100644 --- a/gcn/notices/fermi/gbm/README.md +++ b/gcn/notices/fermi/gbm/README.md @@ -1,6 +1,4 @@ -Under construction... - -#Fermi GBM GCN Notices +# Fermi GBM GCN Notices Fermi GBM is associated with 5 types of public GCN notices: @@ -16,7 +14,7 @@ The classic GCN defines other notice types for the Fermi LAT instrument. Some F Note that introducing the new JSON format for the Fermi GBM notices doesn't discontinue the classic formats: text, binary, and VOEvent. -##Trigger-Initiated Notice Types +## Trigger-Initiated Notice Types When a GBM trigger occurs, the spacecraft issues an Alert notice withing seconds and a few seconds later a Flight Position notice with an initial Classification and Localization. More Flight Position or other type notices follow, each one improving the localization or classification of the previous one. Typically one Final Position notice will come at the end although more are possible with a human input. See the following table for more details: @@ -24,14 +22,14 @@ When a GBM trigger occurs, the spacecraft issues an Alert notice withing seconds | :-------------- | :------------: | :-------------: | :------------: | :------------: | :---: | :---------- | | Alert | 110 | Flight | No | No | 1 | Seconds | | Flight Position | 111 | Flight | Yes | Yes | 1+ | 1-2 Minutes | -| Ground Position | 112 | Ground | Yes | No | 0+ | Minutes | -| Final Position | 115 | Ground | Yes | No | 0-1 | Minutes | -| Final Position | 115 | Human | Yes | No | 0+ | Hours | +| Ground Position | 112 | Ground | Yes | No | 0+ | Minutes | +| Final Position | 115 | Ground | Yes | No | 0-1 | Minutes | +| Final Position | 115 | Human | Yes | No | 0+ | 1+ Hours | ![](NoticesSequence.jpg) -##Subthreshold Notices +## Subthreshold Notices The subthreshold search is looking for transients which didn't cause the flight software to trigger. It sends out one notice per transient.