Fermi-GBM GRB090902462 Summary

Trigger Summary

Trigger Time [MET]        : 273582310.312714
Burst Pos RA [deg]        : 266.4167
Burst Pos Dec [deg]       : 33.8500
Burst Err Radius [deg]    : 3.5000
Trigger significance [sig]: 5.2
Trigger time scale [ms]   : 128
Trigger channel low       : 3
Trigger channel high      : 4
Trigger channel low (ADC) : 259
Trigger channel high (ADC): 1352
Triggered detector        : 100000000100
SC Geo East Long [deg]    : 158.9730
SC Geo North Lat [deg]    : 22.1862

GBM Light curves

Notes:

1) The data are from the Fermi-SDC: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/
2) The light curve is generated using the Fermi-tool gtbin for the TTE data.
3) The individual panel shows the GBM light curve for each GBM detector (GBM-BGO: b0 and b1, GBM-NaI: from n0 to nb) in full energy range.

1s binning

All interval

From T0-10 to T0+100

From T0-10 to T0+50

From T0-10 to T0+10

64ms binning

All interval

From T0-10 to T0+100

From T0-10 to T0+50

From T0-10 to T0+10

LAT Sky Image

Notes:

1) The data are from the LAT photon server: http://fermi.gsfc.nasa.gov/FTP/fermi/data/lat/allsky/
2) The LAT image is created using the Fermi-tool gtselect and gtbin.
3) The GBM position with 35 degree radius is used to create the image.
4) The energy range is from 100 MeV to 300 GeV.
5) The image is searched using ximage detect command. If ximage detect command finds any significant source, the result is shown at the bottom of the image
6) Green circle is the GBM error circle.

   #   count      err         pixel      Vig  RA(2000)   Dec(2000)   Err  H-Box
                             x     y     corr                        rad  (sec)
    1 2.03E+02+/-1.5E+01    28.3    12.4 1.00 17 39 20.3 +27 17 06.5  -1  11700

LAT light curves

Notes:

1) All the photons within a radius of 35 degrees from the GBM position are used to construct the light curve (because the GBM location is not that accurate).

1s binning

10s binning

GBM-LAT light curve (1s binning)