Catalog Overview
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This GRBs Catalog (GRBCAT) records high level information of the GRBs detected since their discovery in 1967. The catalog has been created using publications that report lists of GRB detections. These are mostly papers already published in refereed journals, unpublished papers, and PhD thesis presenting lists of GRBs. GRBCAT includes also compilation of bursts that were already present in the HEASARC database system. The catalog is organized with a main table reporting general information for each GRB and additional tables linked to the main table where specific information for the flux and the region of detection are reported. Afterglow measurements are also recorded in a separate table for all bursts detected after May 11 1996.
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Catalog Parameters
The main table for each GRB contains an entry for each satellite that reports a detection with either a flux and/or position measurement.
General:
| Parameters |
Description |
| Record_number : |
Numerical value that uniquely identifies a record
within this database
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| Id : |
Unique numerical value assigned to each GRB
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| Name : |
Burst Name as GRB YYMMDDn (if multiple bursts occur within a day, where n is a character string)
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| Alt_names : |
Other Names for the burst
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| Time : |
Time when the GRB was observed (UT)
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| Time_def : |
Reference Time system for the burst detection
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| Observatory : |
Name of the detecting instrument
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| Ra : |
Right Ascension of the center of the error region
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| Dec : |
Declination of the center of the error region
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| Region : |
Region type: circle, annulus, box, dual, annulus intersection, irregular or intersection.
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| Afterglow_flag : |
Afterglow Flag
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| Reference : |
Paper reporting the burst
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| Flux_flag : |
Flux Flag
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| Notes : |
Notes
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| Flux_notes : |
Flux Notes
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| Local_notes : |
Localization Notes
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| Class : |
Source Classification
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Durations: The definition for the duration are given in the notes page.
| Parameters |
Description |
| T50_mod : |
Modifier for T50 (<, >, ~, etc.)
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T50 : |
T_50 (s)
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T50_error : |
T_50 Error (s)
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T50_range : |
Energy Range for T50 (keV)
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T50_emin : |
Minimum of Energy Range for T50 (keV)
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T50_emax : |
Maximum of Energy Range for T50 (keV)
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T90_mod : |
Modifier for T90 (<, >, ~, etc.)
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T90 : |
T_90 (s)
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T90_error : |
T_90 Error (s)
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T90_range : |
Energy Range for T90 (keV)
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T90_emin : |
Minimum of Energy Range for T90 (keV)
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T90_emax : |
Maximum of Energy Range for T90 (keV)
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T_other : |
Duration not specified or a Different Duration Measurement
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This table is an associated to the GRBs Catalog and lists the fluxes and fluences of the GRBs.
| Parameters |
Description |
| Flux_mod : |
Modifier for Flux (<, >, ~, etc.)
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| Flux : |
Flux (Units s^-1 cm^-2)
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| Flux_error : |
Peak Flux Error (Units s^-1 cm^-2)
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| Flux_units : |
Flux Measurement Unit (Ergs or Photons)
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| Flux_energy : |
Energy Range of Flux Measurement (keV)
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| Flux_emin : |
Minimum of Energy Range of Flux Measurement (keV)
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| Flux_emax : |
Maximum of Energy Range of Flux Measurement (keV)
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| Fluence_mod : |
Modifier for Fluence (<, >, ~, etc.)
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| Fluence : |
Fluence (Units cm^-2)
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| Fluence_error : |
Fluence Error (Units cm^-2)
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| Fluence_units : |
Fluence Measurement Unit (Ergs or Photons)
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| Fluence_energy : |
Energy Range of Fluence Measurement (keV)
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| Fluence_emin : |
Minimum of Energy Range of Fluence Measurement (keV)
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| Fluence_emax : |
Maximum of Energy Range of Fluence Measurement (keV)
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Regions:
There are seven different types of regions that describe the GRB localization.
To each GRB is associated only one type of region. The number of
parameters used to decribe each geometry varies from region to region
and they are listed below for each of the geometry.
The definition for the different types of regions are given in the
notes page.
Region Circle:
| Parameters |
Description |
| Circle_ra : |
Right ascention of the center of the circle error region (in degrees)
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| Circle_dec : |
Declination of the center of the circle error region (in degrees)
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| Circle_radius : |
Radius of error region (degrees)
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| Circle_area : |
Area of error region (arcmin^2)
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Region Annulus:
| Parameters |
Description |
| Annulus_ra : |
Right ascention of center of Annulus
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| Annulus_dec : |
Declination of center of Annulus
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| Annulus_radius : |
Annulus radius (degrees)
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| Annulus_hw : |
Annulus radius half-width (degrees) |
Region Box:
| Parameters |
Description |
| Box_ra : | Right ascention of the center of the error box region
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| Box_dec : | Declination of the center of the box error region
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| Box_area : | Error Box area (arcmin^2)
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| Box_arc_seg : | Segment length of IPN Annulus (degrees)
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| Box_ra1 : |
First corner right ascention
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| Box_dec1 : |
First corner declination
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| Box_ra2 : |
Second corner right ascention
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| Box_dec2 : |
Second corner declination
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| Box_ra3 : |
Third corner right ascention
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| Box_dec3 : |
Third corner declination
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| Box_ra4 : |
Fourth corner right ascention
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| Box_dec4: |
Fourth corner declination
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| Box_ra5 : |
Fifth corner right ascention
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| Box_dec5: |
Fifth corner declination
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| Box_ra6 : |
Sixth corner right ascention
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| Box_dec6 : |
Sixth corner declination
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Region Dual:
| Parameters |
Description |
| Dual_ra1 : |
Dual localization, first right ascention
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| Dual_dec1 : |
Dual localization, first declination
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| Dual_radius1 : |
Dual localization, first radius (degrees)
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| Dual_area1 : |
Dual localization, first area (arcmin^2)
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| Dual_ra2 : |
Dual localization, second right ascention
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| Dual_dec2 : |
Dual localization, second declination
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| Dual_radius2 : |
Dual localization, second radius (degrees)
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| Dual_area2 : |
Dual localization, second area (arcmin^2)
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Region Intersection:
| Parameters |
Description |
| Int_ann_ra : |
Right Ascension of center of annulus used in intersection
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| Int_ann_dec : |
Declination of center of annulus used in intersection
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| Int_ann_radius : |
Radius of annulus used in intersection (Degrees)
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| Int_ann_hw : |
Half-Width of annulus used in intersection (Degrees)
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| Int_box_ra1 : |
Resulting Error Box, Corner 1 Right Ascension
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| Int_box_dec1 : |
Resulting Error Box, Corner 1 Declination
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| Int_box_ra2 : |
Resulting Error Box, Corner 2 Right Ascension
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| Int_box_dec2 : |
Resulting Error Box, Corner 2 Declination
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| Int_box_ra3 : |
Resulting Error Box, Corner 3 Right Ascension
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| Int_box_dec3 : |
Resulting Error Box, Corner 3 Declination
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| Int_box_ra4 : |
Resulting Error Box, Corner 4 Right Ascension
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| Int_box_dec4 : |
Resulting Error Box, Corner 4 Declination
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Region Annulus Intersection:
| Parameters |
Description |
| Ann_int_ra : |
Right Ascension of center of intersection Area
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| Ann_int_dec : |
Declination of center of intersection Area
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| Ann_int_ra1 : |
Right ascention of center of first annulus used in intersection
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| Ann_int_dec1 : |
Declination of center of first annulus used in intersection
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| Ann_int_radius1 : |
Radius of first annulus used in intersection (degrees)
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| Ann_int_hw1 : |
Halfwidth of first annulus used in intersection (degrees)
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| Ann_int_ra2 : |
Right ascention of center of second annulus used in intersection
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| Ann_int_dec2 : |
Declination of center of second Annulus used in intersection
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| Ann_int_radius2 : |
Radius of second annulus used in intersection (degrees)
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| Ann_int_hw2 : |
Halfwidth of second annulus used in intersection (degrees)
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| Ann_int_ra3 : |
Right ascention of center of third Annulus used in intersection
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| Ann_int_dec3 : |
Declination of center of third annulus used in intersection
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| Ann_int_radius3 : |
Radius of third annulus used in intersection (degrees)
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| Ann_int_hw3 : |
Halfwidth of third annulus used in intersection (degrees)
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Region Irregular:
| Parameters |
Description |
| Irr_circle_ra : |
Comptel Right Ascension
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| Irr_circle_dec : |
Comptel Declination
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| Irr_ra : |
Most probable right ascention
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| Irr_dec : |
Most probable declination
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| Irr_arc_length :
| Arc length of error region (degrees)
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| Irr_arc_width : |
Arc width of error region (degrees) |
| Irr_spacecraft : |
Spacecraft involved in intersection |
The GRB Afterglows table contains intensity and redshift measurements obtained
with ground based telescopes or with space based observatories carried out
after the detection of the GRBs.
| Parameters |
Description |
| Name : |
Burst name as YYMMDD
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| Alt_names : |
Other names burst has been identified as
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| Telescope : |
Observing telescope
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| Observatory : |
Observatory
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| Band : |
Band of observation
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| Energy_range : |
Energy Range of Observation (R-I-O-U-X-G)
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| Obs_time : |
Time of observation (UT)
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| Ra : |
Right Ascension
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| Dec : |
Declination
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| Coord_flag : |
Where the coordinates come from
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| Local_notes : |
Localization Notes
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| Detected : |
If the afterglow was detected: y(yes), n(no), p(probably)
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| Intensity_mod : | Intensity Modifier
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| Intensity : | Intensity observed
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| Intensity_err : | Intensity error
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| Intensity_error_min : |
Intensity Error Minimum
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| Intensity_error_max : |
Intensity Error Maximum
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| Intensity_units : | Units of intensity observation
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| Redshift_mod : | Redshift Modifier
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| Redshift : |
Measured redshift
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| Redshift_err : |
Redshift error
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| Redshift_min : |
Redshift Minimum
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| Redshift_max : |
Redshift Maximum
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| Reference : |
Obervation reference
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| Notes : |
Notes related to the afterglow measurement
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