Access to Astronomical Catalogues

← Click to display the menu
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
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:
FileName Lrecl Records Explanations
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
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
Bytes Format Units Label Explanations
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)
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.
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
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)
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
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)
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.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 16-Dec-2008
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© UDS/CNRS

Contact