J/ApJS/199/18 The Fermi GBM catalog (Paciesas+, 2012)
The Fermi GBM Gamma-Ray Burst catalog: the first two years.
Paciesas W.S., Meegan C.A., von Kienlin A., Bhat P.N., Bissaldi E.,
Briggs M.S., Burgess J.M., Chaplin V., Connaughton V., Diehl R.,
Fishman G.J., Fitzpatrick G., Foley S., Gibby M., Giles M., Goldstein A.,
Greiner J., Gruber D., Guiriec S., van der Horst A.J., Kippen R.M.,
Kouveliotou C., Lichti G., Lin L., McBreen S., Preece R.D., Rau A.,
Tierney D., Wilson-Hodge C.
<Astrophys. J. Suppl. Ser., 199, 18 (2012)>
=2012ApJS..199...18P 2012ApJS..199...18P
ADC_Keywords: Gamma rays ; Surveys
Mission_Name: Fermi
Keywords: catalogs - gamma-ray burst: general
Abstract:
The Fermi Gamma-ray Burst Monitor (GBM) is designed to enhance the
scientific return from Fermi in studying gamma-ray bursts (GRBs). In
its first two years of operation GBM triggered on 491 GRBs. We
summarize the criteria used for triggering and quantify the general
characteristics of the triggered GRBs, including their locations,
durations, peak flux, and fluence. This catalog is an official product
of the Fermi GBM science team, and the data files containing the
complete results are available from the High-Energy Astrophysics
Science Archive Research Center.
Description:
The Fermi Gamma-ray Space Telescope was launched on 2008 June 11 on a
mission to study the universe at high energies. The onboard Gamma-ray
Burst Monitor (GBM) trigger system for detecting GRBs was first
enabled on 2008 July 12. In this paper, we provide a catalog of GRBs
that triggered the GBM during its first two years of operation. During
this time the instrument burst detection algorithms were triggered 908
times: 492 of these are classified as GRBs, 79 as terrestrial
gamma-ray flashes (TGFs), 170 as soft gamma-ray repeaters (SGRs), 31
as solar flares, 61 as charged particles, and 75 as others (galactic
sources, accidental statistical fluctuations, or too weak to
classify). Of the 491 GRBs (in one case the same GRB triggered GBM
twice), 18 were detected by the LAT with high confidence above 100MeV
(A. Abdo et al. 2012ApJ...744..146A 2012ApJ...744..146A).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 38 66 Trigger criteria history
table2.dat 107 492 GRB triggers: locations and trigger characteristics
table3.dat 75 492 GRB durations (50-300keV)
table4.dat 66 492 GRB fluence & peak flux (10-1000keV)
table5.dat 66 492 GRB fluence & peak flux (50-300keV)
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See also:
J/A+A/525/A53 : GBM parameters for detected FERMI bursts (Guetta+, 2011)
J/A+A/530/A21 : Spectral properties of 438 GRBs (Nava+, 2011)
J/ApJS/196/1 : The IPN supplement to the BATSE 5B catalog (Hurley+, 2011)
J/ApJS/188/405 : Fermi-LAT first source catalog (1FGL) (Abdo+, 2010)
J/ApJ/701/824 : Afterglows of short and long-duration GRBs (Nysewander+, 2009)
J/A+A/506/1563 : First AGILE catalog of gamma-ray sources (Pittori+, 2009)
J/A+A/438/1175 : First INTEGRAL SPI-ACS Gamma-Ray Burst Catalogue (Rau+, 2005)
http://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html : Fermi GBM burst
catalog on line
http://gammaray.nsstc.nasa.gov/gbm/science/grbs/month_listings/ : GBM GRB light
curves month by month
http://www.ssl.berkeley.edu/ipn3/ : The third interplanetary network homepage
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Al [1/66] Algorithm number
4- 8 I5 ms Time Trigger timescale
10- 13 I4 ms Off Offset
15- 17 A3 --- Ch Channels
19 A1 --- l_E Limit flag on E
20- 24 A5 keV E Energy range
26- 27 A2 --- Th1 Threshold (0.1σ) on 2008 Jul 11 (1)
29- 30 A2 --- Th2 Threshold (0.1σ) on 2008 Jul 14 (1)
32- 33 A2 --- Th3 Threshold (0.1σ) on 2008 Aug 1 (1)
35- 36 A2 --- Th4 Threshold (0.1σ) on 2009 May 8 (1)
38 A1 --- Th5 Threshold (0.1σ) on 2009 Jul 2 (1)
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Note (1): Symbol ":" indicates no change from previous setting; "C" indicates
that the algorithm is in compute mode (see the text); and "D"
indicates that the algorithm is disabled.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [bn]
3- 11 I09 --- ID Trigger identifier (bnYYMMDDNNN)
13 A1 --- Flag [ce] Source emission flag (1)
15- 17 A3 --- --- [GRB]
19- 25 A7 --- GRB GRB name (YYMMDDA)
27- 39 A13 "h:m:s" Obs.time UT Time of the trigger
41- 45 F5.1 deg RAdeg Right Ascension in decimal degrees (J2000)
47- 51 F5.1 deg DEdeg Declination in decimal degrees (J2000)
53- 56 F4.1 deg ePos Positional uncertainty
58- 66 A9 --- Loc Source of the coordinate localization used for
the trigger (Fermi, Swift, IPN...)
68- 69 I2 --- Al [1,56] Trigger algorithm
71- 74 I4 ms Time Trigger timescale
76- 81 A6 keV Energy Trigger energy range
83-107 A25 --- Other Other detections (2)
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Note (1): Flag as follows:
c = GRB091024A triggered GBM twice.
e = burst has significant emission in at least one BGO detector (see text).
Note (2): Other instrument detections as follows:
K = Konus-WInd;
K-RF = Konus-RF;
S = Swift;
IA = INTEGRAL SPI-ACS;
IB = INTEGRAL Burst Alert System;
W = Suzaku-WAM;
R = RHESSI;
M = MAXI;
SA = SuperAGILE;
AM = AGILE-MCAL;
A = AGILE;
L = Fermi LAT.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [bn]
3- 11 I09 --- ID Trigger identifier (bnYYMMDDNNN)
13 A1 --- R Individual remarks (3)
15- 27 A13 --- Det Detectors used
29- 35 F7.3 s T90 ? Time burst was between 5% and 95% of its fluence
37- 42 F6.3 s e_T90 ? Uncertainty in T90
44- 51 F8.3 s T90st ? Start of T90 relative to trigger time
53- 59 F7.3 s T50 ? Time burst was between 25% and 75% of its fluence
61- 66 F6.3 s e_T50 ? Uncertainty in T50
68- 75 F8.3 s T50st ? Start of T50 relative to trigger time
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Note (3): Flag as follows:
a = Data problems precluded duration analysis.
b = Used TTE binned at 32ms.
c = Partial earth occultation is likely; durations are lower limits.
d = Possible precursor at ∼T0-120s before trigger.
e = Data cut off while burst in progress; durations are lower limits.
f = SAA entry at T_0+83s after trigger; durations are lower limits.
g = GRB091024 triggered GBM twice.
h = Too weak to measure durations; visual duration is ∼0.025s.
i = Possible contamination due to emergence of Crab & A0535+26
from Earth occultation.
j = Used TTE binned at 16ms.
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Byte-by-byte Description of file: table[45].dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [bn]
3- 11 I09 --- ID Trigger identifier (bnYYMMDDNNN)
13- 20 E8.2 mJ/m2 Fluence ? Fluence; in erg/cm2
22- 29 E8.2 mJ/m2 e_Fluence ? Uncertainty in Fluence
31- 36 F6.2 ph/cm2/s PF64 ? Peak flux with 64ms binning
38- 42 F5.2 ph/cm2/s e_PF64 ? Uncertainty in PF64
44- 49 F6.2 ph/cm2/s PF256 ? Peak flux with 256ms binning
51- 54 F4.2 ph/cm2/s e_PF256 ? Uncertainty in PF256
56- 61 F6.2 ph/cm2/s PF1024 ? Peak flux with 1024ms binning
63- 66 F4.2 ph/cm2/s e_PF1024 ? Uncertainty in PF1024
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History:
From electronic version of the journal
References:
Goldstein et al. Companion paper. 2012ApJS..199...19G 2012ApJS..199...19G
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 23-Mar-2012