Skip to main content
New Swift-BAT/GUANO and IceCube Notice Types Available! See news and announcements

High Altitude Water Cherenkov Gamma-Ray Observatory (HAWC)

HAWC logo

Start of Full Operations: March 2015

End of Operations: No specific requirement

Data Archive: HAWC Observatory

The High Altitude Water Cherenkov (HAWC) Observatory is a facility designed to observe gamma rays and cosmic rays between 100 GeV and 100 TeV. It is located at Sierra Negra, Mexico, at an altitude of 4100 m. The HAWC observatory has an instantaneous field of view covering 15% of the sky, and during each 24 hour period it observes two-thirds of the sky.

GCN Notice Types in GCN Classic and GCN Classic Over Kafka:

TypeContentsLatency
HAWC_BURST_MONITORHAWC alert of GRB-like events.0.5–1 minutes

Common GCN Circular Types:

TypeLatencyExample
IceCube-HAWC subthreshold alerthoursNuEm-211209A
HAWC follow-up of a neutrinohoursIceCube-211208A
HAWC follow-up of a GWhoursLIGO/Virgo S200128d
Looking for U.S. government information and services? Visit USA.gov