J/ApJS/156/217 IPN supplement to BATSE untriggered GRBs (Hurley+, 2005)
The interplanetary network supplement to the BATSE catalogs of untriggered
cosmic gamma-ray bursts.
Hurley K., Stern B., Kommers J., Cline T., Mazets E., Golenetskii S.,
Trombka J., McClanahan T., Goldsten J., Feroci M., Frontera F.,
Guidorzi C., Montanari E., Lewin W., Meegan C., Fishman G., Kouveliotou C.,
Sinha S., Seetha S.
<Astrophys. J. Suppl. Ser., 156, 217-226 (2005)>
=2005ApJS..156..217H 2005ApJS..156..217H
ADC_Keywords: Gamma rays
Keywords: catalogs - gamma rays: bursts
Abstract:
We present Interplanetary Network (IPN) detection and localization
information for 211 gamma-ray bursts (GRBs) observed as untriggered
events by the Burst and Transient Source Experiment (BATSE) and
published in catalogs by Kommers et al. (Cat. J/ApJS/134/385) and
Stern et al. (Cat. J/ApJ/563/80). IPN confirmations have been
obtained by analyzing the data from 11 experiments. For any given
burst observed by BATSE and one other distant spacecraft, arrival time
analysis (or "triangulation") results in an annulus of possible
arrival directions whose half-width varies between 14' and 5.6°,
depending on the intensity, time history, and arrival direction of the
burst, as well as the distance between the spacecraft. This annulus
generally intersects the BATSE error circle, resulting in a reduction
of the area of up to a factor of ∼650. When three widely separated
spacecraft observed a burst, the result is an error box whose area is
as much as 30,000 times smaller than that of the BATSE error circle.
Because the IPN instruments are considerably less sensitive than
BATSE, they generally did not detect the weakest untriggered bursts
but did detect the more intense ones, which failed to trigger BATSE
when the trigger was disabled. In a few cases, we have been able to
identify the probable origin of bursts as soft gamma repeaters. The
vast majority of the IPN-detected events, however, are GRBs, and the
confirmation of them validates many of the procedures utilized to
detect BATSE untriggered bursts.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 62 211 BATSE untriggered Bursts confirmed by the IPN
notes.dat 80 49 Notes on GRB
table2.dat 52 95 IPN annuli
table3.dat 110 90 IPN error boxes
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See also:
IX/20 : The Fourth BATSE Burst Revised Catalog (Paciesas+ 1999)
J/ApJS/134/385 : Supplement to the BATSE gamma-ray burst catalogs
(Kommers+, 2001)
J/ApJS/120/399 : ULYSSES supplement to GRB 3B catalog (Hurley+, 1999)
J/ApJ/563/80 : 3906 gamma-ray bursts BATSE triggers (Stern+, 2001)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- GRB GRB name
8- 17 A10 "YYYY/MM/DD" Date Date of the burst
18 A1 --- n_GRB Note on GRB detailed in file notes.dat
20- 24 I5 s Time Universal Time of the burst at Earth
28- 62 A35 --- Space IPN spacecraft (1)
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Note (1): IPN spacecrafts are:
PVO = J. Laros 1991, private communication.
Ginga = T. Murakami 1991, private communication.
Granat = Sazonov et al. 1998, Cat. J/A+AS/129/1.
PHEBUS = Tkachenko et al. 1998AstL...24..722T 1998AstL...24..722T.
DMSP = J. Terrell 1995, private communication.
BeppoSax = C. Guidorzi et al. 2005, in preparation;
Piro & Costa 1998, GCN Circ. 99.
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [GRB]
5- 10 I6 --- GRB GRB name
12- 80 A69 --- Text Text of Note
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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- 6 I6 --- GRB GRB name
8- 17 I10 "YYYY/MM/DD" Date Date of the burst
19- 23 I5 s Time Universal Time of the burst at Earth
25- 31 F7.3 deg RAdeg Right Ascension IPN annulus center
in decimal degrees (J2000) (1)
33- 39 F7.3 deg DEdeg Declination IPN annulus center
in decimal degrees (J2000) (1)
41- 46 F6.3 deg RIPN1 Angular radius of the first IPN annulus (1)
48- 52 F5.3 deg DelRIPN Half-width of the first IPN annulus (1)
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Note (1): In the heliocentric frame. If the burst was detected by a third,
distant spacecraft, and a non-degenerate second annulus could be
derived for it, the information is given for this annulus.
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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- 6 I6 --- GRB GRB name
8- 17 I10 "YYYY/MM/DD" Date Date of the burst
19- 23 I5 s Time Universal Time of the burst at Earth
25- 31 F7.3 deg RAdeg Right Ascension BATSE error circle center
in decimal degrees (J2000)
33- 39 F7.3 deg DEdeg Declination BATSE error circle center
in decimal degrees (J2000)
41- 46 F6.3 deg rBATSE Radius of the BATSE error circle (1)
48- 54 F7.3 deg RAdeg1 First intersection Right Ascension
(J2000) (2)
56- 62 F7.3 deg DEdeg1 First intersection Declination (J2000) (2)
64- 70 F7.3 deg RAdeg2 Second intersection Right Ascension
(J2000) (2)
72- 78 F7.3 deg DEdeg2 Second intersection Declination (J2000) (2)
80- 86 F7.3 deg RAdeg3 Third intersection Right Ascension
(J2000) (2)
88- 94 F7.3 deg DEdeg3 Third intersection Declination (J2000) (2)
96-102 F7.3 deg RAdeg4 Fourth intersection Right Ascension
(J2000) (2)
104-110 F7.3 deg DEdeg4 Fourth intersection Declination (J2000) (2)
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Note (1): This is the combination of the 1σ statistical error and
a 1.6° systematic error, summed in quadrature.
Note (2): For those bursts which were observed by BATSE and a single
IPN spacecraft (e.g. figure 2), the coordinates are those of
the intersection of the 3σ IPN annulus with the 1σ
(statistical plus systematic) BATSE error circle. Although all of
the annuli are statistically consistent with the positions of their
respective 1σ BATSE error circles, in some cases part or all of
the annulus does not actually intersect the error circle. In those
cases, the coordinates are set to zero. For those bursts which were
observed by two distant IPN spacecraft (e.g. figure 2), and for which
an IPN-only error box can be derived, the coordinates given are those
of the IPN error box.
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 29-Aug-2005