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## GRBCATINTA - Gamma-Ray Bursts Catalog: Annulus Intersect Regions |
HEASARC Archive |

This table contains the description only for the annuli intersect region type, the other types are stored in separate tables. This localization region consists of in the intersection up to three annuli. Each annulus is described by a center given in RA and Dec, the radius of the annulus and by the half- width of the annulus.

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.

**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.

**Ann_Int_RA**

This is the Right Ascension corresponding to the center of the
intersect region given in units of degrees.

**Ann_Int_Dec**

This is the Declination corresponding to the center of the
intersect region given in units of degrees.

**Ann_Int_RA1**

This is the Right Ascension corresponding to the center of the
first annulus of the intersect region given in units of degrees.

**Ann_Int_Dec1**

This is the Declination corresponding to the center of the
first annulus of the intersect region given in units of degrees.

**Ann_Int_Radius1**

This is the radius of first annulus of the intersect region
given in units of degrees.

**Ann_Int_HW1**

This is the half-width of first annulus of the intersect region
given in units of degrees.

**Ann_Int_RA2**

This is the Right Ascension corresponding to the center of the
second annulus of the intersect region given in units of degrees.

**Ann_Int_Dec2**

This is the Declination corresponding to the center of the
second annulus of the intersect region given in units of degrees.

**Ann_Int_Radius2**

This is the radius of second annulus of the intersect region
given in units of degrees.

**Ann_Int_HW2**

This is the half-width of first annulus of the intersect region
given in units of degrees.

**Ann_Int_RA3**

This is the Right Ascension corresponding to the center of the
third annulus of the intersect region given in units of degrees.

**Ann_Int_Dec3**

This is the Declination corresponding to the center of the
third annulus of the intersect region given in units of degrees.

**Ann_Int_Radius3**

This is the radius of third annulus of the intersect region
given in units of degrees.

**Ann_Int_HW3**

This is the half-width of first annulus of the intersect region
given in units of degrees

**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.