J/ApJS/208/21 The BATSE 5B GRB spectral catalog (Goldstein+, 2013)
The BATSE 5B gamma-ray burst spectral catalog.
Goldstein A., Preece R.D., Mallozzi R.S., Briggs M.S., Fishman G.J.,
Kouveliotou C., Paciesas W.S., Burgess J.M.
<Astrophys. J. Suppl. Ser., 208, 21 (2013)>
=2013ApJS..208...21G 2013ApJS..208...21G
ADC_Keywords: Gamma rays ; Spectroscopy ; Models
Mission_Name: CGRO
Keywords: gamma-ray burst: general - methods: data analysis
Abstract:
We present systematic spectral analyses of gamma-ray bursts (GRBs)
detected with the Burst and Transient Source Experiment (BATSE) on
board the Compton Gamma-Ray Observatory during its entire nine years
of operation. This catalog contains two types of spectra extracted
from 2145 GRBs, and fitted with five different spectral models
resulting in a compendium of over 19000 spectra. The models were
selected based on their empirical importance to the spectral shape of
many GRBs, and the analysis performed was devised to be as thorough
and objective as possible. We describe in detail our procedures and
criteria for the analyses, and present the bulk results in the form of
parameter distributions. This catalog should be considered an official
product from the BATSE Science Team, and the data files containing the
complete results are available from the High-Energy Astrophysics
Science Archive Research Center (HEASARC).
Description:
The Compton Gamma-Ray Observatory (CGRO) was placed into low Earth
orbit (∼400km) by the space shuttle Atlantis on 1991 April 5. BATSE
was one of four experiments on board the 17 ton satellite. It was an
eight-module all-sky detector system designed to study gamma-rays in
the energy band of ∼10keV-20MeV. During its entire 3323 days of
operation (an effective exposure of ∼2390 days in the GRB triggering
energy band), BATSE triggered on 2704 GRBs, 2145 of which are
presented in this catalog.
We chose five spectral models to fit the spectra of GRBs in our
selection sample. These models include a single power law (PL), Band's
GRB function (Band et al. 1993ApJ...413..281B 1993ApJ...413..281B) (BAND), an exponential
cut-off power-law (COMP), a smoothly connected broken power law
(SBPL), and a Log10 Gaussian (GLOGE). All models are formulated in
units of photon flux with energy (E) in keV and multiplied by a
normalization constant A (ph/s/cm2/keV). See section 4 for the
details of each model.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 173 2145 GRB fluence spectra fit by BAND function
table1b.dat 173 2145 GRB peak flux spectra fit by BAND function
table7.dat 157 2145 GRB fluence spectra fit by COMP function
table2b.dat 157 2145 GRB peak flux spectra fit by COMP function
table8.dat 173 2145 GRB fluence spectra fit by GLGOE function
table3b.dat 173 2145 GRB peak flux spectra fit by GLOGE function
table9.dat 139 2145 GRB fluence spectra fit by PL function
table4b.dat 139 2145 GRB peak flux spectra fit by PL function
table10.dat 191 2145 GRB fluence spectra fit by SBPL function
table5b.dat 191 2145 GRB peak flux spectra fit by SBPL function
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See also:
IX/20 : The Fourth BATSE Burst Revised Catalog (Paciesas+ 1999)
J/ApJ/748/134 : Variability components in BATSE GRB light curves (Gao+, 2012)
J/ApJ/740/104 : BATSE GRB pulse catalog - preliminary data (Hakkila+, 2011)
J/ApJS/196/1 : The IPN supplement to the BATSE 5B catalog (Hurley+, 2011)
J/ApJ/727/73 : Composite spectrum of GRB afterglows (Christensen+, 2011)
J/ApJS/195/2 : The second Swift BAT GRB catalog (BAT2) (Sakamoto+, 2011)
J/ApJ/720/1146 : Spectral analysis of GRBs (Lu+, 2010)
J/MNRAS/407/2075 : Gamma-ray bursts spectral peak estimator (Shahmoradi+, 2010)
J/ApJS/180/192 : BeppoSAX/GRBM γ-ray Burst Catalog (Frontera+, 2009)
J/ApJS/169/62 : GRB database of spectral lags (Hakkila+, 2007)
J/ApJS/166/298 : Spectral cat. of bright BATSE GRBs (Kaneko+, 2006)
J/ApJS/156/217 : IPN supplement to BATSE untriggered GRBs (Hurley+, 2005)
J/ApJS/154/585 : BATSE earth occultation deep sample results (Harmon+, 2004)
J/A+A/385/377 : 319 gamma-ray bursts BATSE triggers (Quilligan+, 2002)
J/ApJ/563/80 : 3906 gamma-ray bursts BATSE triggers (Stern+, 2001)
J/ApJS/134/385 : Supplement to the BATSE GRB catalogs (Kommers+, 2001)
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)
J/ApJS/120/399 : ULYSSES supplement to GRB 3B catalog (Hurley+, 1999)
Byte-by-byte Description of file: table6.dat table1b.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Tnum [105/8121] Trigger number
6- 9 I04 --- Dets [0/4567] Detectors used
11- 14 A4 --- Dtype [CONT/MER ] Datatype (MER or CONT) (G3)
16- 21 F6.2 s Time [2/889] Total integrated time
23- 30 E8.2 ph/s/cm2/keV Amp [0.0002/57] Amplitude A (1)
32- 39 E8.2 ph/s/cm2/keV e_Amp [0/133] Uncertainty in Amp (G1)
41- 47 F7.2 --- alpha [-2.4/3.9] Low-energy index α (1)
49- 55 F7.2 --- e_alpha [0/4627] Uncertainty in alpha (G1)
57- 63 F7.2 --- beta [-36.8/-0.7] High-energy index β (1)
65- 71 F7.2 --- e_beta [0/9999.99] Uncertainty in beta (G1)
73- 80 E8.2 keV Epeak [2.4/7410] Peak of νFν Spectrum (1)
82- 89 E8.2 keV e_Epeak Uncertainty in Epeak (G1)
91- 97 F7.2 ph/s/cm2 Pflux [0.07/364] Photon Flux in the 20-2000keV
band
99-105 F7.2 ph/s/cm2 e_Pflux Uncertainty in Pflux (G1)
107-113 F7.2 ph/cm2 Pflnc [0.2/1504] Photon Fluence
115-121 F7.2 ph/cm2 e_Pflnc Uncertainty in Pflnc (G1)
123-131 E9.2 mW/m2 Eflux Energy Flux; erg/s/cm2
133-141 E9.2 mW/m2 e_Eflux Uncertainty in Eflux (G1)
143-151 E9.2 mJ/m2 Eflnc Energy Fluence; erg/cm2
153-161 E9.2 mJ/m2 e_Eflnc Uncertainty in Eflnc (G1)
163-170 F8.2 --- Chisq [1/90669] Chisq Goodness-of-Fit
Statistic (G2)
172-173 I2 --- DOF [9/11] Degrees of Freedom
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Note (1): the BAND function (Band et al. 1993ApJ...413..281B 1993ApJ...413..281B) is:
* for high energy E≥(α-β)Epeak/(α+2):
f(E) = A (E/100keV)αexp(-((α+2)E/Epeak))
* for low energy E<(α-β)Epeak/(α+2):
f(E) = A (E/100keV)βexp(β-α)
[(α-β)Epeak/(100keV(α+2))](α-β)
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Byte-by-byte Description of file: table7.dat table2b.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- Tnum [105/8121] Trigger number
6- 9 I04 --- Dets [0/4567] Detectors used
11- 14 A4 --- Dtype [CONT/MER ] Datatype (G3)
16- 21 F6.2 s Time [2/889] Total integrated time
23- 30 E8.2 ph/s/cm2/keV Amp [0.0001/22] Amplitude A (1)
32- 39 E8.2 ph/s/cm2/keV e_Amp Uncertainty in Amp (G1)
41- 47 F7.2 --- Index [-2.9/7.8] Spectral Index α (1)
49- 55 F7.2 --- e_Index [0/6] Uncertainty in Index (G1)
57- 64 E8.2 keV Epeak Peak of νFν Spectrum (1)
66- 73 E8.2 keV e_Epeak Uncertainty in Epeak (G1)
75- 81 F7.2 ph/s/cm2 Pflux [0.06/364] Photon Flux in the 20-2000keV
band
83- 89 F7.2 ph/s/cm2 e_Pflux Uncertainty in Pflux (G1)
91- 97 F7.2 ph/cm2 Pflnc [0.2/1503] Photon Fluence
99-105 F7.2 ph/cm2 e_Pflnc Uncertainty in Pflnc (G1)
107-115 E9.2 mW/m2 Eflux [1.1e-08/17797] Energy Flux; erg/s/cm2
117-125 E9.2 mW/m2 e_Eflux Uncertainty in Eflux (G1)
127-135 E9.2 mJ/m2 Eflnc [2.8e-08/0.0004] Energy Fluence; erg/cm2
137-145 E9.2 mJ/m2 e_Eflnc Uncertainty in Eflnc (G1)
147-154 F8.2 --- Chisq [1/17797] Chisq Goodness-of-Fit
Statistic (G2)
156-157 I2 --- DOF [10/12] Degrees of Freedom
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Note (1): the COMP (compotonized) model is characterized by:
f(E) = A (E/100keV)α exp(-(α+2)E/Epeak)
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Byte-by-byte Description of file: table8.dat table3b.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- Tnum [105/8121] Trigger number
6- 9 I04 --- Dets [0/4567] Detectors used
11- 14 A4 --- Dtype [CONT/MER ] Datatype (G3)
16- 21 F6.2 s Time [2/889] Total integrated time
23- 30 E8.2 ph/s/cm2/keV Amp [0.0001/3780] Amplitude A (1)
32- 39 E8.2 ph/s/cm2/keV e_Amp [3.05e-05/1840] Uncertainty in Amp (G1)
41- 46 F6.2 [keV] FWHM [0.3/283] Full-Width at Half Maximum s (1)
48- 53 F6.2 [keV] e_FWHM [0.07/386] Uncertainty in FWHM (G1)
55- 62 E8.2 keV Ecen [0.2/3] Centroid Energy (1)
64- 71 E8.2 keV e_Ecen [0.004/7] Uncertainty in Ecen (G1)
73- 80 E8.2 keV Epeak [0/1.9e+07] Peak of νFν Spectrum
82- 89 E8.2 keV e_Epeak [0/2.8e+09] Uncertainty in Epeak (G1)
91- 97 F7.2 ph/s/cm2 Pflux [0.04/306] Photon Flux in the 20-2000keV
band
99-105 F7.2 ph/s/cm2 e_Pflux Uncertainty in Photon Flux (G1)
107-113 F7.2 ph/cm2 Pflnc [0.1/1373] Photon Fluence
115-121 F7.2 ph/cm2 e_Pflnc Uncertainty in Photon Fluence (G1)
123-131 E9.2 mW/m2 Eflux [8.3e-09/5.8e-05] Energy Flux; erg/s/cm2
133-141 E9.2 mW/m2 e_Eflux Uncertainty in Energy Flux (G1)
143-151 E9.2 mJ/m2 Eflnc [2.1e-08/0.0004] Energy Fluence; erg/cm2
153-161 E9.2 mJ/m2 e_Eflnc Uncertainty in Energy Fluence (G1)
163-170 F8.2 --- Chisq [1/9999.99] Chisq Goodness-of-Fit
Statistic (G2)
172-173 I2 --- DOF [10/12] Degrees of Freedom
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Note (1): the log-Gaussian (GLGOE) is characterized by:
f(E) = A/(s.sqrt(2π)) exp[-(log(E/Ecen)/s)2]
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Byte-by-byte Description of file: table9.dat table4b.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- Tnum [105/8121] Trigger number
6- 9 I04 --- Dets [0/4567] Detectors used
11- 14 A4 --- Dtype [CONT/MER ] Datatype (G3)
16- 21 F6.2 s Time [2/889] Total integrated time
23- 30 E8.2 ph/s/cm2/keV Amp [2.01e-06/0.5] Amplitude A (1)
32- 39 E8.2 ph/s/cm2/keV e_Amp Uncertainty in Amp (G1)
41- 47 F7.2 --- Index [-9.7/-0.7] Spectral Index λ (1)
49- 55 F7.2 --- e_Index Uncertainty in Index (G1)
57- 63 F7.2 ph/s/cm2 Pflux [0.09/380] Photon Flux in the 20-2000keV
band
65- 71 F7.2 ph/s/cm2 e_Pflux Uncertainty in Pflux (G1)
73- 79 F7.2 ph/cm2 Pflnc [0.2/1664] Photon Fluence
81- 87 F7.2 ph/cm2 e_Pflnc Uncertainty in Pflnc (G1)
89- 97 E9.2 mW/m2 Eflux [2.5e-08/7.1e-05] Energy Flux; erg/s/cm2
99-107 E9.2 mW/m2 e_Eflux Uncertainty in Eflux (G1)
109-117 E9.2 mJ/m2 Eflnc [4.9e-08/0.0006] Energy Fluence; erg/cm2
119-127 E9.2 mJ/m2 e_Eflnc Uncertainty in Eflnc (G1)
129-136 F8.2 --- Chisq [3/18152] Chisq Goodness-of-Fit
Statistic (G2)
138-139 I2 --- DOF [11/13] Degrees of Freedom
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Note (1): the power-law function is f(E)=A(E/100keV)λ
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Byte-by-byte Description of file: table10.dat table5b.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- Tnum [105/8121] Trigger number
6- 9 I04 --- Dets [0/4567] Detectors used
11- 14 A4 --- Dtype [CONT/MER ] Datatype (G3)
16- 21 F6.2 s Time [2/889] Total integrated time
23- 30 E8.2 ph/s/cm2/keV Amp [5.31e-05/4.58e-01] Amplitude A (1)
32- 39 E8.2 ph/s/cm2/keV e_Amp Uncertainty in Amp (G1)
41- 47 F7.2 --- lam1 [-11/24] Low-Energy index λ1 (1)
49- 55 F7.2 --- e_lam1 [0/260] Uncertainty in lam1 (G1)
57- 63 F7.2 --- lam2 [-93/7] High-Energy index λ2 (1)
65- 71 F7.2 --- e_lam2 [0/9999.99] Uncertainty in lam2 (G1)
73- 80 E8.2 keV Ebreak [25/240000] Spectral Break Energy Eb (1)
82- 89 E8.2 keV e_Ebreak [0/3.5e+09] Uncertainty in Ebreak (G1)
91- 98 E8.2 keV Epeak [0/64100] Peak of νFν Spectrum (1)
100-107 E8.2 keV e_Epeak [0/8.3e+08] Uncertainty in Epeak (G1)
109-115 F7.2 ph/s/cm2 Pflux [0.08/396] Photon Flux in the 20-2000keV
band
117-123 F7.2 ph/s/cm2 e_Pflux Uncertainty in Pflux (G1)
125-131 F7.2 ph/cm2 Pflnc [0.2/1542] Photon Fluence
133-139 F7.2 ph/cm2 e_Pflnc [0/16] Uncertainty in Pflnc (G1)
141-149 E9.2 mW/m2 Eflux [1.3e-08/5.74e-05] Energy Flux; erg/s/cm2
151-159 E9.2 mW/m2 e_Eflux Uncertainty in Eflux (G1)
161-169 E9.2 mJ/m2 Eflnc [3.4e-08/0.0004] Energy Fluence; erg/cm2
171-179 E9.2 mJ/m2 e_Eflnc Uncertainty in Eflnc (G1)
181-188 F8.2 --- Chisq [1/9999.99] Chisq Goodness-of-Fit
Statistic (G2)
190-191 I2 --- DOF [9/11] Degrees of Freedom
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Note (1): the Smotthly Broken Power-Law is characterized by:
f(E) = A(E/100keV)b dexp(a-apiv)
where b=(λ_1+λ2)/2,
a=0.3((λ1-λ2)/2).ln(sinh(q)),
In Figure 10, we show the distributions for the break energy, Ebreak
and the peak of the power density spectrum, Epeak. Ebreak is the
energy at which the low- and high-energy power laws are joined, which
is not necessarily representative of the Epeak. As discussed in Kaneko
et al. (2006, Cat. J/ApJS/166/298), although the SBPL (smoothly
connected broken power law model) is parameterized with Ebreak, the
Epeak can be derived from the functional form. See section 5.1 for
further explanations.
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Global notes:
Note (G1): Please note that the spectral tables list the raw results of
each spectral fit to each GRB. In cases where the spectral fit failed,
the values reported are those that initialized the spectral fit. If
the uncertainty on the spectral parameters is reported as zero (no
uncertainty), then the fit failed. In a few cases throughout these
tables, the uncertainties for certain spectral parameters may be
reported as "9999.99" which indicates that the uncertainty on that
parameter is completely unconstrained. An example of this is when the
spectral data from a burst is fitted with a BAND function but is
unable to constrain the high-energy index. In this case, the best fit
centroid value of the high-energy index parameter is reported, and the
"9999.99" is reported for the uncertainty.
Note (G2): Although the least-squares fitting process did not minimize
χ2 as a figure of merit, we can calculate the χ2
goodness-of-fit statistic comparing the model to the data. See
appendix C.
Note (G3): The primary data type used in this catalog was the 2.048s
resolution "CONT" data, which provided semi-continuous count rate and
16 channel spectral coverage, over a broad ∼20-2000keV energy range,
during the entire BATSE lifetime. When CONT data were not available
(usually due to data corruption), the associated "MER" data were used
if possible. The native time resolution of MER data was 16ms but only
started at trigger time and extended to less than 200s after trigger.
The energy resolution is the same as CONT data, so the count rates
were binned to 2.048s in order to be compatible with CONT data. MER
data were used only if a background model could be fit to the
post-burst background and extrapolated through the duration of the
burst. MER data was used for only 15 GRBs in this catalog. See section
3.2 for further explanations.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 29-Oct-2013