Fermi-GBM GRB090225009 Summary

Trigger Summary

Trigger Time [MET]        : 257213545.977622
Burst Pos RA [deg]        : 23.1000
Burst Pos Dec [deg]       : 55.1000
Burst Err Radius [deg]    : 18.0667
Trigger significance [sig]: 5.3
Trigger time scale [ms]   : 256
Trigger channel low       : 3
Trigger channel high      : 4
Trigger channel low (ADC) : 259
Trigger channel high (ADC): 1352
Triggered detector        : 000110000000
SC Geo East Long [deg]    : 278.0612
SC Geo North Lat [deg]    : 20.9394
 

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.

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)