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GRBCATINTA  GammaRay Bursts Catalog: Annulus Intersect Regions 
This table is an associated to the GRBs Catalog and lists the
parameters that define the localization region if the region is an intersection
of annuli. 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 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.
References for the individual records in this table are available
in the "reference" field of the GRBCAT main table.
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.
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 halfwidth 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 halfwidth 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 halfwidth 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.
Questions regarding the GRBCATINTA database table can be addressed to the
HEASARC User Hotline.
If you have any problems, please consult the help
page or mail ledashelp@star.le.ac.uk
