J/ApJS/169/62 GRB database of spectral lags (Hakkila+, 2007)
A gamma-ray burst database of BATSE spectral lag and internal luminosity
function values.
Hakkila J., Giblin T.W., Young K.C., Fuller S.P., Peters C.D., Nolan C.,
Sonnett S.M., Haglin D.J., Roiger R.J.
<Astrophys. J. Suppl. Ser., 169, 62-74 (2007)>
=2007ApJS..169...62H 2007ApJS..169...62H
ADC_Keywords: Gamma rays
Keywords: gamma rays: bursts - methods: data analysis
Abstract:
We present a database of spectral lags and internal luminosity
function (ILF) measurements for gamma-ray bursts (GRBs) in the BATSE
catalog. Measurements were made using 64ms count rate data and are
defined for various combinations of the four broadband BATSE energy
channels.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 58 8688 Energy-dependent lags of BATSE GRBs
table5.dat 46 2124 Burst time intervals used to calculate the BATSE
internal luminosity function measurements
table6.dat 102 63720 Internal luminosity function measurements of
BATSE GRBs
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See also:
IX/20 : The Fourth BATSE Burst Revised Catalog (Paciesas+ 1999)
J/A+A/385/377 : 319 gamma-ray bursts BATSE triggers (Quilligan+, 2002)
J/ApJS/166/298 : Spectral catalog of bright BATSE gamma-ray bursts
(Kaneko+, 2006)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Trigger BATSE Trigger ID
6- 11 I6 s Start Foreground start time
13- 18 I6 s End Foreground end time
20- 28 F9.3 s Lag Lag
30- 38 F9.3 s e_Lag Lag uncertainty
40- 44 I5 --- Num Number of measurements
48- 51 A4 --- Ch Energy channels being compared
55 A1 --- Obs Observer (1)
58 A1 --- n_Lag [012] Origin of lag uncertainty (2)
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Note (1): An indicator of the operator who made the measurement
(used to search for systematic measurement errors)
Note (2): Uncertainty flag, defined as follows:
0 = the uncertainty is taken from the measurements;
1 = the uncertainty has been obtained using eq. (1) and Table 3;
2 = a lag near zero was assigned a minimum uncertainty of 32ms.
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Trigger BATSE Trigger ID
8- 16 F9.3 s BGS Background start time (relative to trigger)
18- 26 F9.3 s BGE Background end time (relative to trigger)
28- 36 F9.3 s FGS Foreground start time (relative to trigger)
38- 46 F9.3 s FGE Foreground end time (relative to trigger)
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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- 4 I4 --- Trigger BATSE Trigger ID
6- 9 F4.1 --- n(sigma) [1,3] Cutoff threshold above background
(relative to σ)
12- 14 A3 --- Ch 3-letter energy channel combination
16- 24 F9.3 --- C ILF normalization constant (1)
26- 34 F9.3 --- e_C ILF normalization constant uncertainty
36- 44 F9.3 --- alpha ILF power-law index (1)
46- 54 F9.3 --- e_alpha ILF power-law index uncertainty
56- 64 F9.3 --- beta ILF curvature index (1)
66- 74 F9.3 --- e_beta ILF curvature index uncertainty
76- 84 F9.3 --- (chi/nu)2 Chi square per degree of freedom
86- 89 I4 --- nu Degrees of freedom
91- 98 F8.2 --- R Internal Luminosity Range (R=Fpeak/F_min)
100-102 I3 --- q Quality factor (2)
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Note (1): These data represent the best-fits to the Internal Luminosity
Functions (Ψ(L)) of BATSE gamma-ray bursts. In fitting these data,
a model of the form Ψ(L)=C(Lα).dexp(β*L2) is
assumed. All attempted fits have been included in this table,
including poor ones.
Note (2): The quality factor q indicates the acceptability of each fit, and
is based on the number of degrees of freedom available for the fit. A
value of q=2 indicates a high-quality fit, a value of q=1 indicates an
acceptable fit, and a value of q=0 indicates a poor fit that should in
general not be used.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 16-Dec-2008