J/ApJ/616/1072 The GUSBAD catalog of gamma-ray bursts (Schmidt+, 2004)
The GUSBAD catalog of gamma-ray bursts.
Schmidt M.
<Astrophys. J., 616, 1072-1077 (2004)>
=2004ApJ...616.1072S 2004ApJ...616.1072S
ADC_Keywords: Gamma rays
Keywords: cosmology: observations - gamma rays: bursts
Abstract:
The GUSBAD catalog of gamma-ray bursts (GRBs) is based on archival
BATSE DISCLA data covering the full 9.1yr of the Compton Gamma Ray
Observatory mission. The catalog contains 2207 GRBs, including 589
bursts not listed in the Current BATSE Burst Catalog (see Cat.
IX/20). The GUSBAD (Gamma-ray bursts Uniformly Selected from BATSE
Archival Data) catalog is uniform in the sense that the detection
criteria are the same throughout, and the properties given in the
catalog are available for every burst. The detection and derivation of
the properties of the GRBs were carried out automatically. This makes
the GUSBAD catalog especially suitable for statistical work and
simulations, such as that used in the derivation of V/Vmax. We
briefly touch upon a potential problem in defining a GRB duration that
is physically meaningful.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
catalog.dat 172 2207 The GUSBAD catalog
--------------------------------------------------------------------------------
See also:
IX/20 : The Fourth BATSE Burst Revised Catalog (Paciesas+ 1999)
J/ApJ/563/80 : 3906 gamma-ray bursts BATSE triggers (Stern+, 2001)
Byte-by-byte Description of file: catalog.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 F10.3 --- GUSBAD GRB designation (based on date YYMMDD)
13- 17 I5 d MJD Truncated Modified Julian Date (JD-2400000.5)
19- 23 I5 s Ttrig Trigger time, in seconds of day (UT)
27- 29 I3 deg RAdeg Right ascension (J2000)
30- 32 I3 deg DEdeg [-90,90] Declination (J2000)
34- 35 I2 deg e_Np RMS deviation of the Np individual positions
from the mean; set to 0 for Np=1
37- 39 I3 --- Np Number of 1.024s intervals used for the
position derivation
42- 45 I4 --- ptrig Data packet number (p-number) at trigger:
ptrig=301
47- 50 I4 --- ptop p-number corresponding to maximum burst
signal Cmax
52- 55 I4 --- plast p-number for the last burst signal
exceeding the trigger limit
59- 63 F5.3 --- V/Vm V/Vmax value based on a simulation in which
the GRB is removed in Euclidean space until
it is below the trigger limit
65- 68 I4 --- pfar p-number of the final burst signal at the
detection limit in the V/Vm simulation
71 A1 --- Class [BG] Burst classification method (1)
74- 80 F7.1 ct/s Cmax Maximum count rate for the burst signal
in detector d2
83- 87 F5.1 ct/s Cmin Minimum count rate needed for trigger in
detector d2
90- 95 F6.2 ct/cm2/s Fpeak Peak flux in cts/cm2/s
98-103 F6.2 ct/cm2 Flu Fluence of burst in cts/cm2
105-107 I3 --- n5 Number of 1.024s intervals when burst exceeds
trigger limit
111-114 F4.2 --- HR1 The ratio of burst counts in ch1/(ch2+ch3) (2)
116-119 F4.2 --- HR2 The ratio of burst counts in ch2/(ch2+ch3) (2)
121-124 F4.2 --- HR3 The ratio of burst counts in ch3/(ch2+ch3) (2)
126-129 F4.2 --- HR4 The ratio of burst counts in ch4/(ch2+ch3) (2)
132-136 F5.2 --- a23 Photon spectral index corresponding to
count ratio ch3/ch2
139-141 I3 deg Az Azimuth of the burst
142-144 I3 deg Al Altitude of the burst
149-151 I3 deg Baz Azimuth of the burst in BATSE based coordinate
system
152-154 I3 deg Bal Altitude of the burst in BATSE based coordinate
system
159 I1 --- d1 Brightest illuminated detector
161-163 I3 deg a1 Angle between the normal to d1 and the GRB
168 I1 --- d2 Second brightest illuminated detector
170-172 I3 deg a2 Angle between the normal to d2 and the GRB
--------------------------------------------------------------------------------
Note (1): The burst classification method is defined as follows:
B = the classification of the event as a GRB was partly based on its
appearance in the Current BATSE Burst Catalog;
G = the classification is made independent of other catalogs
Note (2): Counts are collected in four energy channels
(20-50, 50-100, 100-300, and >300keV).
--------------------------------------------------------------------------------
History:
From http://www.astro.caltech.edu/~mxs/grb/GUSBAD/
(End) Marianne Brouty [CDS] 15-Jun-2005