GCN: The Gamma-ray Coordinates Network (TAN: Transient Astronomy Network)
UPDATE: The only outage was from 16:05 to 18:54 UT (2.82 hrs duration).
ORIGINAL ANNOUNCEMENT: There will be intermitant interruptions in the internet connectivity with GCN this Sat, Sep 24 14:00-20:00 UT.
The network for several buildings (including the one that houses GCN) is undergoing upgrades.
There will be several outages with durations of minutes to maybe an hour.
Socket connections will drop for each interruption, and
email-based distributions will experience delayed delivery until internet access is re-established.
The GCN system distributes:
These two functions provide a one-stop shopping network for follow-up sites
and GRB and transient researchers.
Locations of GRBs and other Transients (the Notices) detected by spacecraft (most in real-time while the burst is still bursting and
others are that delayed due to telemetry down-link delays).
Reports of follow-up observations (the Circulars and the Reports) made by
ground-based and space-based optical, radio, x-ray, TeV, and other particle observers.
The GCN system can be explored using the links above and below.
Invitation to subscribe to the GCN/TAN (Notices or Circulars) here.
Make a modification to an existing site configuration here.
Invitation to producers to incorporate your events into GCN here.
The physical GCN network. (Click to enlarge.)