Fermi-GBM Subthreshold Trigger Information

This page changes after each Trigger/Notice, so hit the   <reload>   button NOW.

This table contains information about subthreshold triggers from Fermi-GBM.
The most recent Notice is listed first (reverse time order).

The 3 left-most columns (TRIGGER) give the ID number and the date/time of the event.
These columns contain:
      the Trigger Number (which is a link to all the original full-format email GCN/Fermi Notices on that trigger),
      the Date (yy/mm/dd), and
      the Time (hh:mm:ss.ss) of the start of the GRB (ie the on-board Trigger Time).

The next 9 columns (OBSERVATION) come from the results of the various observations and analyses by the Fermi.
These columns contain:
      the RA,Dec (J2000) location of the GRB,
      the error (GBM: deg radius, statistical only) uncertainty in that location, and
      Comments describing the observation results (generated by the GCN processing).
      A "type_class" flag indicating if the event is "short" or "long".
      A "spectral class" flag indicating if the event spectrum is "hard" or "soft".
      This field is only really defined for events with sufficient signal and otherwise has
      the default value of "1" hard.
      A "reliability" value (running from 1 to 10) indicating the likeliness
      that this transient is astrophysical.

Included are URLs for (a) a Healpix FITS file of the location probability on the sky,
(b) a PNG file showing that map, and (c) a URL the lightcurve of the transient.
(The URLs point to the GCN website where they can be downloaded via wget/curl/etc.)

If a column's information is not available or is not applicable, then that entry is listed as "n/a".

PLEASE NOTE(09apr20): That between 05-Mar-2020 to 09-Apr-2020 the HEALPIX, MAP, and LC files were incorrectly labelled and sent to GCN.
The MAP file information was called the HEALPIX file, and similar problems for the MAP and LC information and filenames.
So for that date interval, all that is really available is the sky map, and you find it by clicking the "HEALPIX" label.
Getting the corrected files (correctly named for their content) is being persued by the Fermi GBM team.

UPDATE(10apr20): Fermi has corrected the typo mistake in their recent s/w update, and
the files were retransmitted to GCN to correct those entries, eg now clicking LC will get you the lightcurve.

For more information on the Fermi GBM instrument: Fermi.

Mail questions/suggestions/complaints to Scott Barthelmy.