2016MNRAS.462.3243Z

Query : 2016MNRAS.462.3243Z

2016MNRAS.462.3243Z - Mon. Not. R. Astron. Soc., 462, 3243-3254 (2016/November-1)

Classifying gamma-ray bursts with Gaussian Mixture Model.

ZHANG Z.-B., YANG E.-B., CHOI C.-S. and CHANG H.-Y.

Abstract (from CDS):

Using Gaussian Mixture Model (GMM) and expectation-maximization algorithm, we perform an analysis of time duration (T90) for Compton Gamma Ray Observatory(CGRO)/BATSE, Swift/BAT and Fermi/GBM gamma-ray bursts (GRBs). The T90 distributions of 298 redshift-known Swift/BAT GRBs have also been studied in both observer and rest frames. Bayesian information criterion has been used to compare between different GMM models. We find that two Gaussian components are better to describe the CGRO/BATSE and Fermi/GBM GRBs in the observer frame. Also, we caution that two groups are expected for the Swift/BAT bursts in the rest frame, which is consistent with some previous results. However, Swift GRBs in the observer frame seem to show a trimodal distribution, of which the superficial intermediate class may result from the selection effect of Swift/BAT.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: data analysis - methods: statistical - gamma-ray burst: general - gamma-ray burst: general

Simbad objects: 77

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Number of rows : 77
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 GRB 091208A gB 00 01 10.90 +65 40 47.7           ~ 24 0
2 Fermi bn100802240 gB 00 09 52.47 +47 45 19.1           ~ 61 0
3 GRB 990304 gB 00 25 -60.9           ~ 10 0
4 Fermi bn100522157 gB 00 27 56.79 +09 24 06.6           ~ 57 0
5 GRB 110207A gB 00 50 09.50 -10 47 23.8           ~ 37 0
6 GRB 050911A gB 00 54 38.290 -38 50 58.50           ~ 66 0
7 2B 920525C gB 00 58.6 -67 08           ~ 16 0
8 Fermi bn100814160 gB 01 29 53.61 -17 59 43.6           ~ 219 0
9 GRB 100906A gB 01 54 44.19 +55 37 49.8           ~ 233 0
10 Trigger 6385 gB 02 06 +40.9           ~ 6 0
11 GRB 961017 gB 02 26 -12.9           ~ 11 0
12 GRB 060306 gB 02 44 22.830 -02 08 55.00           ~ 119 0
13 1B 911119 gB 02 49.7 +67 46           ~ 17 0
14 Fermi bn101011707 gB 03 13 10.62 -65 58 55.6           ~ 48 0
15 GRB 070714B G 03 51 22.2720 +28 17 50.943           ~ 248 0
16 GRB 071227A G 03 52 31.0260 -55 59 00.890           ~ 201 0
17 4B 951211 gB 05 24.6 -18 56           ~ 11 0
18 1B 910802 gB 05 26.0 -36 16           ~ 16 0
19 GRB 990605 gB 05 44 +37.2           ~ 7 0
20 GRB 060507 gB 05 59 50.520 +75 14 55.88 20.52         ~ 40 0
21 Fermi bn080807993 gB 06 47 -16.0           ~ 25 0
22 GRB 061006 G 07 24 07.8080 -79 11 55.188           ~ 214 0
23 GRB 070420 gB 08 04 55.170 -45 33 19.99 20.39 20.01 17.16     ~ 83 0
24 GRB 060428A gB 08 14 10.840 -37 10 11.70     19.97     ~ 54 0
25 GRB 051227 gB 08 20 58.107 +31 55 32.01           ~ 127 0
26 GRB 090916 gB 08 26 19.60 +25 56 27.3           ~ 29 0
27 GRB 980904 gB 08 34 -62.8           ~ 11 0
28 GRB 051016B gB 08 48 27.810 +13 39 20.00 20.45         ~ 153 0
29 Fermi bn100704149 gB 08 54 33.92 -24 12 09.7           ~ 103 0
30 1B 910725 gB 09 01.4 -19 29           ~ 18 0
31 GRB 100423A gB 09 05 53.00 +21 29 13.4           ~ 24 0
32 GRB 961225 gB 09 28 -01.3           ~ 12 0
33 SDSS J093805.33+153719.0 G 09 38 05.33384 +15 37 19.0406           ~ 146 0
34 GRB 090831A gB 09 40 23 +50 58.0           ~ 36 0
35 GRB 110824A gB 10 08 +01.3           ~ 15 0
36 GRB 090715A gB 10 08 24.50 +10 00 22.4           ~ 25 0
37 GRB 070223 gB 10 13 48.390 +43 08 00.71 21.47         ~ 67 0
38 UCAC4 217-047923 * 10 19 02.5992684123 -46 40 11.294771086   13.795 12.458 12.114   ~ 54 0
39 GRB 100725A gB 11 05 55.59 -26 40 12.6           ~ 31 0
40 GRB 121014A gB 11 06 34.70 -29 06 18.3           ~ 20 0
41 1B 910709 gB 11 31.1 +81 40           ~ 26 0
42 GRB 080603B gB 11 46 07.46 +68 03 38.5           ~ 153 0
43 GRB 090530 gB 11 57 36.00 +26 35 23.0           ~ 89 0
44 GRB 000107 gB 12 29 +30.3           ~ 9 0
45 3B 931222 gB 12 50.1 +28 39           ~ 18 0
46 3B 930709 gB 12 57.5 -46 43           ~ 18 0
47 GRB 110402A gB 13 09 36.54 +61 15 10.3           ~ 67 0
48 4B 951007 gB 13 36.9 +08 40           ~ 13 0
49 GRB 050717 gB 14 17 24.440 -50 32 00.10           ~ 68 0
50 GRB 060814 gB 14 45 21.480 +20 35 11.80           ~ 241 0
51 Trigger 6802 gB 14 50 -52.0           ~ 5 0
52 Fermi bn120402669 gB 14 55 -10.4           ~ 12 0
53 Fermi bn121029350 gB 15 07 -28.2           ~ 13 0
54 GRB 091120 gB 15 07.2 -21 47           ~ 34 0
55 Fermi bn100517154 gB 16 14 21 -10 22.0           ~ 15 0
56 Fermi bn120605453 gB 16 14 +41.5           ~ 13 0
57 UGCS J162444.39-273226.8 G 16 24 44.38275 -27 32 26.8381     19.70     ~ 469 1
58 GRB 090531B gB 16 48 15.0 -36 01 27           ~ 58 0
59 2B 921022 gB 16 55.1 -12 25           ~ 35 0
60 GRB 111103B gB 17 42 46.37 +01 36 36.3           ~ 41 0
61 GRB 980112 gB 17 47 53 +10 42.6           ~ 5 0
62 4B 950531 gB 18 18.8 +17 47           ~ 10 0
63 GRB 120514A gB 18 52 00.19 -04 15 48.9           ~ 40 0
64 GRB 080503 gB 19 06 28.74 +68 47 35.8           ~ 172 0
65 GRB 110726A gB 19 06 52.21 +56 04 16.4           ~ 55 0
66 GRB 101017A gB 19 25 32.56 -35 08 41.4           ~ 33 0
67 Fermi bn080905705 gB 20 06 57.93 -62 33 46.8           ~ 119 0
68 1B 911016B gB 21 09.7 +11 59           ~ 10 0
69 Fermi bn090820509 gB 21 13 -18.6           ~ 18 0
70 GRB 060614 G 21 23 32.140 -53 01 36.10           ~ 714 0
71 3B 931031 gB 21 40.4 +62 44           ~ 25 0
72 Trigger 5592 gB 21 54 +34.0           ~ 6 0
73 Fermi bn090927422 gB 22 55 53.41 -70 58 49.3           ~ 112 0
74 GRB 070506 gB 23 08 52.390 +10 43 20.30     19.04     ~ 86 0
75 GRB 100606A gB 23 22 30.49 -66 14 28.6           ~ 46 0
76 GRB 090131 gB 23 29.2 +21 12           ~ 37 0
77 Fermi bn100212588 gB 23 45 40.39 +49 29 39.6           ~ 56 0

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