LEDAS  
Leicester Database and Archive Service
 
ARNIE Index
ARNIE Help
ARNIE Tutorial
Search...
All databases
All helpfiles
Line
Footer
E-mail

GRBCATDUAL: Help

GRBCATDUAL - Gamma-Ray Bursts Catalog: Dual Regions


Overview

This table is an associated to the GRBs Catalog and lists the parameters that define the localization region if the region is dual (two error regions). For a given GRB the localization can be provided by different observatories with different region types or by the same region type with different parameters. The different region types reported in literature are the following: circle, annulus, box, dual, annulus intersect, irregular, and intersect.

This table contains the description only for the dual region type, the other types are stored in separate tables. The dual region type is for GRBs that had the localization defined by two error circle regions. The dual regions are defined by the centers of the two circle region given in RA and Dec and their radii given in degrees.

The measurements are reported as found in literature and any differences or remarks are included in one of the table parameter (local_notes).

The literature references are provided in the GRBs Catalog main table which is linked to this region table.


References

References for the individual records in this table are available in the "reference" field of the GRBCAT main table.

Provenance

This table was ingested by the HEASARC in June 2008 based on electronic versions obtained from the author(s), who compiled the catalog in 2005.

Parameters

Record_Number
This is a numerical value that uniquely identifies a record within this database.

Id
This is a unique numerical value assigned to each GRB. Since for a given GRB there can be more that one record, this numerical value is assigned to all record associated to a specific GRB.

Name
This is the name of the GRB. The name are assigned following the "GRB YYMMDD" or "GRB YYMMDDn" if multiple bursts occur within a day, where n is a character string.

Dual_RA1
This is the Right Ascension corresponding to the center of the first circle of the dual region given in units of degrees.

Dual_Dec1
This is the Declination corresponding to the center of the first circle of the dual region given in units of degrees.

Dual_Radius1
This is the radius of the first circle defining the error region given in units of degrees.

Dual_Area1
This is the area of the first circle of the dual region in units of arcmin^2.

Dual_RA2
This is the Right Ascension corresponding to the center of the second circle of the dual region given in units of degrees.

Dual_Dec2
This is the Declination corresponding to the center of the second circle of the dual region given in units of degrees.

Dual_Radius2
This is the radius of the second circle defining the error region given in units of degrees.

Dual_Area2
This is the area of the second circle of the dual region in units of arcmin^2.

Local_Notes
This field contains notes regarding the localization of the GRB. This is filled to explain how the values reported in the database are compared with the values reported in the literature.


Contact Person

Questions regarding the GRBCATDUAL database table can be addressed to the HEASARC User Hotline.
If you have any problems, please consult the help page or mail ledas-help@star.le.ac.uk
 
HOME
SEARCH
SERVICES INFO SOFTWARE ViZieR BLASTA DSS
ARCHIVES ASCA CHANDRA GINGA ROSAT ARNIE