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J/ApJS/134/385 Supplement to the BATSE gamma-ray burst catalogs (Kommers+, 2001)
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A non-triggered burst supplement to the BATSE gamma-ray burst catalogs.
Kommers J.M., Lewin W.H.G., Kouveliotou C., Van Paradijs J., Pendleton G.N.,
Meegan C.A., Fishman G.J.
<Astrophys. J. Suppl. Ser. 134, 385 (2001)>
=2001ApJS..134..385K
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ADC_Keywords: Gamma rays
Keywords: catalogs - gamma rays: bursts
Mission_Name: BATSE
Abstract:
The Burst and Transient Source Experiment (BATSE) on the Compton Gamma
Ray Observatory detects gamma-ray bursts (GRBs) with a real-time burst
detection (or "trigger") system running on-board the spacecraft. Under
some circumstances, however, a GRB may not activate the on-board burst
trigger. For example, the burst may be too faint to exceed the
on-board detection threshold, or it may occur while the on-board burst
trigger is disabled for technical reasons. This paper describes a
catalog of 873 "nontriggered" GRBs that were detected in a search of
the archival continuous data from BATSE recorded between 1991 December
9.0 and 1997 December 17.0. For each burst, the catalog gives an
estimated source direction, duration, peak flux, and fluence. Similar
data are presented for 50 additional bursts of unknown origin that
were detected in the 25-50keV range; these events may represent the
low-energy "tail" of the GRB spectral distribution. This catalog
increases the number of GRBs detected with BATSE by 48% during the
time period covered by the search.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 4 1392 On-board triggers detected in off-line search
table6.dat 146 873 Non-triggered GRB catalog
table8.dat 107 50 Non-triggered ``unknown'' events
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See also:
IX/20 : The Fourth BATSE Burst Revised Catalog (Paciesas+ 1999)
J/ApJS/120/399 : ULYSSES supplement to GRB 3B catalog (Hurley+, 1999)
J/ApJS/126/19 : BATSE gamma-ray burst spectral catalog. I. (Preece+, 2000)
J/ApJS/127/79 : BATSE occultation catalog of Gamma-Ray sources (Ling+, 2000)
Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- TrigNo Trigger number
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 9 F9.2 --- Name GRB name (G1)
11- 17 I7 d JD Julian date
19- 25 F7.1 s Obs.s [0/86400[ Time of outburst in seconds
27- 31 F5.1 deg RAdeg Right Ascension in decimal degrees (J2000)
33- 37 F5.1 deg DEdeg Declination in decimal degrees (J2000)
39- 43 F5.1 deg PosErr Radius of the position error box
45- 49 F5.2 --- Rat1 ? Ratio of maximum to minimum count rate
on a 1.024s timescale
51- 56 F6.2 --- Rat4 ? Ratio of maximum to minimum count rate
on a 4.096s timescale
58- 63 F6.2 --- Rat8 ? Ratio of maximum to minimum count rate
on a 8.192s timescale
65- 67 I3 ct Cmin1 ? Minimum count encountered on a 1.024s
timescale
69- 71 I3 ct Cmin4 ? Minimum count encountered on a 4.096s
timescale
73- 75 I3 ct Cmin8 ? Minimum count encountered on a 8.192s
timescale
77- 84 E8.2 s T50 ? The T_50_ statistic
(Kouveliotou et al., 1993ApJ...413L.101K)
86- 93 E8.2 s e_T50 ? Uncertainty in T50
95-102 E8.2 s T90 ? The T_90_ statistic
(Kouveliotou et al., 1993ApJ...413L.101K)
104-111 E8.2 s e_T90 ? Uncertainty in T90
113-120 E8.2 ct/cm2/s Int Burst intensity in energy range 50-300keV
122-128 E7.2 ct/cm2/s e_Int Uncertainty in Int
130-136 E7.2 10-7J/cm2 Flu ? Burst fluence in energy range 50-300keV
(in ergs/cm^2^)
138-144 E7.2 10-7J/cm2 e_Flu ? Uncertainty in Flu
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
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1- 9 F9.2 --- Name GRB name (G1)
11- 17 I7 d JD Julian date
19- 25 F7.1 s Obs.s [0/86400[ Time of outburst in seconds
27- 31 F5.1 deg RAdeg Right Ascension in decimal degrees (J2000)
33- 37 F5.1 deg DEdeg Declination in decimal degrees (J2000)
39- 43 F5.1 deg PosErr Radius of the position error box
45- 52 E8.2 s T50 ? The T_50_ statistic
(Kouveliotou et al., 1993ApJ...413L.101K)
54- 61 E8.2 s e_T50 ? Uncertainty in T50
63- 70 E8.2 s T90 The T_90_ statistic
(Kouveliotou et al., 1993ApJ...413L.101K)
72- 79 E8.2 s e_T90 Uncertainty in T90
81- 84 F4.2 ct/cm2/s Int Burst intensity from 50-300keV
86- 89 F4.2 ct/cm2/s e_Int Uncertainty in Int
91- 97 E7.2 10-7J/cm2 Flu Burst fluence from 25-100keV
(in ergs/cm^2^)
99-105 E7.2 10-7J/cm2 e_Flu ? Uncertainty in Flu
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Global notes:
Note (G1):
GRB names are here built from the day (e.g. 930315 for 15 March 1993)
followed by 2 decimals for the fraction of the day of the event.
History:
From electronic version of the journal
References:
Kommers et al., Paper I 1997ApJ...491..704K
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(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 30-Aug-2001