2016A&A...589A..98G

Query : 2016A&A...589A..98G

2016A&A...589A..98G - Astronomy and Astrophysics, volume 589A98-98 (2016/5-1)

Individual power density spectra of Swift gamma-ray bursts.

GUIDORZI C., DICHIARA S. and AMATI L.

Abstract (from CDS):

Context. Timing analysis can be a powerful tool with which to shed light on the still obscure emission physics and geometry of the prompt emission of gamma-ray bursts (GRBs). Fourier power density spectra (PDS) characterise time series as stochastic processes and can be used to search for coherent pulsations and, more in general, to investigate the dominant variability timescales in astrophysical sources. Because of the limited duration and of the statistical properties involved, modelling the PDS of individual GRBs is challenging, and only average PDS of large samples have been discussed in the literature thus far.
Aims. We aim at characterising the individual PDS of GRBs to describe their variability in terms of a stochastic process, to explore their variety, and to carry out for the first time a systematic search for periodic signals and for a link between PDS properties and other GRB observables.
Methods. We present a Bayesian procedure that uses a Markov chain Monte Carlo technique and apply it to study the individual PDS of 215 bright long GRBs detected with the Swift Burst Alert Telescope in the 15-150keV band from January 2005 to May 2015. The PDS are modelled with a power-law either with or without a break.
Results. Two classes of GRBs emerge: with or without a unique dominant timescale. A comparison with active galactic nuclei (AGNs) reveals similar distributions of PDS slopes. Unexpectedly, GRBs with subsecond-dominant timescales and duration longer than a few tens of seconds in the source frame appear to be either very rare or altogether absent. Three GRBs are found with possible evidence for a periodic signal at 3.0-3.2σ (Gaussian) significance, corresponding to a multi-trial chance probability of ∼1%. Thus, we found no compelling evidence for periodic signal in GRBs.
Conclusions. The analogy between the PDS of GRBs and of AGNs could tentatively indicate similar stochastic processes that rule BH accretion across different BH mass scales and objects. In addition, we find evidence that short dominant timescales and duration are not completely independent of each other, in contrast with commonly accepted paradigms.

Abstract Copyright: © ESO, 2016

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

VizieR on-line data: <Available at CDS (J/A+A/589/A98): table1.dat refs.dat table2.dat table3.dat table4.dat>

Simbad objects: 216

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Number of rows : 216
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 Fermi bn100924165 gB 00 02 41 +07 00.0           ~ 28 0
2 GRB 110420A gB 00 08 39.27 -37 53 11.9           ~ 33 0
3 GRB 060912A gB 00 21 08.11 +20 58 18.9           ~ 116 1
4 GRB 050326 gB 00 27 49.110 -71 22 16.40   20.55       ~ 61 0
5 GRB 150206A gB 00 40 17.57 -63 10 56.0           ~ 55 0
6 Fermi bn120729456 gB 00 52 17.84 +49 56 23.1           ~ 122 0
7 GRB 050904 gB 00 54 50.794 +14 05 09.42           ~ 496 0
8 Fermi bn081221681 gB 01 03 10.2 -24 32 53           ~ 186 0
9 GRB 120116A gB 01 05 00.0 +33 55 44           ~ 39 0
10 GRB 060825 gB 01 12 29.520 +55 47 51.59           ~ 49 0
11 GRB 081128 gB 01 23 12.98 +38 07 37.5           ~ 42 0
12 Fermi bn100814160 gB 01 29 53.61 -17 59 43.6           ~ 219 0
13 GRB 081222 gB 01 30 57.76 -34 05 44.0           ~ 199 0
14 GRB 070911 gB 01 43 16.5 -33 29 18           ~ 37 0
15 GRB 140619A gB 01 48 26.15 -39 15 32.6           ~ 23 0
16 GRB 100906A gB 01 54 44.19 +55 37 49.8           ~ 233 0
17 GRB 070427 gB 01 55 29.10 -27 36 11.2           ~ 19 0
18 GRB 060908 gB 02 07 18.360 +00 20 31.20 16.99 18.34 16.85     ~ 217 0
19 GRB 070616 gB 02 08 36.430 +56 56 44.91           ~ 79 0
20 GRB 091018 gB 02 08 46 -57 33.0           ~ 169 0
21 Fermi bn080727964 gB 02 10 31.96 +64 08 14.3           ~ 47 0
22 GRB 070220 gB 02 19 06.810 +68 48 16.11           ~ 57 0
23 SN 2009nz SN* 02 26 19.87 -18 57 08.6           ~ 307 1
24 GRB 080411 gB 02 31 54.82 -71 18 07.5           ~ 109 0
25 GRB 050603 gB 02 39 56.839 -25 10 54.92     18.48     ~ 174 0
26 Fermi bn130925164 gB 02 44 42.38 -26 09 15.8           ~ 184 0
27 GRB 050418 gB 02 57 23 -18 32.3           ~ 23 0
28 GRB 060312 gB 03 03 05.920 +12 50 02.00           ~ 50 0
29 Fermi bn090926914 gB 03 05 14.30 -38 59 50.9           ~ 149 1
30 GRB 061007 gB 03 05 19.510 -50 30 02.50 14.28 14.40 12.95     ~ 315 1
31 GRB 140907A gB 03 12 34.98 +46 36 17.2           ~ 81 0
32 GRB 070318 gB 03 13 56.830 -42 56 46.30 18.27 16.23 15.49     ~ 170 0
33 Fermi bn130609902 gB 03 35 05.11 -40 10 26.7           ~ 54 0
34 Fermi bn091221870 gB 03 43 11.40 +23 14 28.0           ~ 66 0
35 GRB 060210 gB 03 50 57.370 +27 01 34.40   20.27       ~ 275 0
36 GRB 091029 gB 04 00 40.00 -55 57 12.7           ~ 168 0
37 GRB 070328 gB 04 20 27.680 -34 04 00.60 20.29         ~ 97 0
38 Fermi bn101024486 gB 04 26 01.24 -77 15 55.1           ~ 54 0
39 Fermi bn130216927 gB 04 31 36.0 +14 39 53           ~ 36 0
40 GRB 060110 gB 04 50 57.850 +28 25 55.70           ~ 59 0
41 Fermi bn141004973 gB 05 06 56.11 +12 49 10.1           ~ 75 0
42 GRB 080328A gB 05 21 55.81 +47 30 38.0           ~ 53 0
43 GRB 050219B gB 05 25 15.990 -57 45 28.70   21.38 20.40     ~ 57 0
44 Fermi bn140209313 gB 05 25 19.00 +32 29 56.1           ~ 47 0
45 Fermi bn100619015 gB 05 38 28.0 -27 00 02           ~ 57 0
46 GRB 131229A gB 05 40 55.61 -04 23 46.6           ~ 35 0
47 GRB 061126 gB 05 46 24.460 +64 12 38.49 18.62 18.79 19.20     ~ 182 1
48 Fermi bn100728095 gB 05 55 02.00 -15 15 20.2           ~ 157 0
49 Fermi bn150301818 gB 05 56 40.04 -57 58 10.4           ~ 67 0
50 GRB 090201 gB 06 08 12.30 -46 36 16.1           ~ 68 0
51 GRB 141017A gB 06 14 31.18 -58 34 56.5           ~ 26 0
52 GRB 090401B gB 06 20 21.11 -08 58 20.2           ~ 58 0
53 GRB 140215A gB 06 56 35.83 +41 47 11.8           ~ 38 0
54 GRB 140213A gB 07 00 37.18 -73 08 14.1           ~ 102 0
55 GRB 060813 gB 07 27 35.380 -29 50 49.40           ~ 62 0
56 GRB 110422A gB 07 28 11.21 +75 06 24.0           ~ 113 0
57 GRB 070628 gB 07 41 06.06 -20 16 45.3           ~ 41 0
58 GRB 090929B gB 07 50 50.90 -00 38 41.2           ~ 39 0
59 GRB 071020 gB 07 58 39.65 +32 51 38.8           ~ 158 0
60 Fermi bn120119170 gB 08 00 06.940 -09 04 53.83           ~ 193 0
61 GRB 070420 gB 08 04 55.170 -45 33 19.99 20.39 20.01 17.16     ~ 83 0
62 GRB 081028 gB 08 07 34.40 +02 18 16.8           ~ 125 0
63 Fermi bn150314205 gB 08 26 40.82 +63 50 03.4           ~ 117 0
64 GRB 140419A gB 08 27 57.56 +46 14 25.3           ~ 95 0
65 GRB 150323A gB 08 32 42.73 +45 27 52.9           ~ 68 0
66 GRB 110503A gB 08 51 06.31 +52 12 27.7           ~ 115 0
67 Fermi bn100704149 gB 08 54 33.92 -24 12 09.7           ~ 103 0
68 GRB 050820B gB 09 02 25.370 -72 38 43.69           ~ 36 0
69 GRB 100423A gB 09 05 53.00 +21 29 13.4           ~ 24 0
70 GRB 141109A gB 09 38 07.40 -00 36 28.6           ~ 73 0
71 GRB 061021 gB 09 40 36.120 -21 57 05.40 18.21 19.20 16.82     ~ 160 0
72 Fermi bn140206304 gB 09 41 16.90 +66 45 42.7           ~ 149 0
73 Fermi bn140709637 gB 09 44 13.20 +63 31 46.5           ~ 28 0
74 GRB 061121 gB 09 48 54.570 -13 11 42.68 17.19 17.71 17.02     ~ 350 0
75 GRB 070306 gB 09 52 23.220 +10 28 55.20           ~ 222 1
76 Fermi bn111228657 gB 10 00 16.04 +18 17 52.2           ~ 201 0
77 GRB 071010B gB 10 02 09.20 +45 43 52.2           ~ 173 0
78 Fermi bn121217313 gB 10 14 50.32 -62 21 03.3           ~ 69 0
79 GRB 111123A gB 10 19 23.17 -20 38 41.9           ~ 83 0
80 GRB 110205A gB 10 58 31.12 +67 31 31.2           ~ 213 0
81 GRB 080430 gB 11 01 14.63 +51 41 07.8           ~ 157 0
82 GRB 050219A gB 11 05 38.990 -40 41 03.00           ~ 97 0
83 Fermi bn121031949 gB 11 23 04.85 -03 31 01.3           ~ 33 0
84 Fermi bn120624933 gB 11 23 31.98 +08 55 42.1           ~ 100 0
85 SN 2013cq SN* 11 32 32.84 +27 41 56.2           SNIc 613 1
86 GRB 080613B gB 11 35 11.51 -07 06 17.5           ~ 51 0
87 Fermi bn091020900 gB 11 42 55.20 +50 58 42.0           ~ 188 0
88 GRB 080603B gB 11 46 07.46 +68 03 38.5           ~ 153 0
89 Fermi bn100615083 gB 11 48 49.25 -19 28 52.2           ~ 133 0
90 GRB 080714 gB 12 32 25.29 -60 16 40.2           ~ 54 0
91 GRB 090424 gB 12 38 07.40 +16 49 45.9           ~ 269 0
92 GRB 050124 gB 12 51 30.560 +13 02 39.50           ~ 62 0
93 GRB 080607A gB 12 59 47.14 +15 55 09.6           ~ 257 0
94 Fermi bn130420313 gB 13 04 25.49 +59 25 26.8           ~ 112 0
95 GRB 150222A gB 13 15 08.71 -12 09 07.5           ~ 28 0
96 Fermi bn120811649 gB 13 18 43.82 +62 18 02.8           ~ 113 0
97 GRB 051008 gB 13 31 28.100 +42 08 05.01 17.06   14.11     ~ 90 0
98 GRB 060206 gB 13 31 43.420 +35 03 03.60   19.99 17.09     ~ 330 0
99 Fermi bn140102887 gB 14 07 40.65 +01 19 59.8           ~ 53 0
100 GRB 080915B gB 14 12 21.20 -11 29 26.9           ~ 18 0
101 Fermi bn120913997 gB 14 14 38.30 -14 30 27.9           ~ 25 0
102 GRB 050717 gB 14 17 24.440 -50 32 00.10           ~ 68 0
103 GRB 130907A gB 14 23 34.03 +45 36 27.1           ~ 120 0
104 GRB 080319B gB 14 31 41.04 +36 18 09.2           ~ 508 0
105 GRB 050915B gB 14 36 25.890 -67 24 33.21           ~ 56 0
106 GRB 050128 gB 14 38 17.750 -34 45 55.61           ~ 68 0
107 GRB 060814 gB 14 45 21.480 +20 35 11.80           ~ 241 0
108 GRB 080721A gB 14 57 55.76 -11 43 24.9           ~ 180 0
109 GRB 050701 gB 15 09 01.490 -59 24 52.81           ~ 33 0
110 GRB 080906 gB 15 12 13 -80 32.4           ~ 63 0
111 GRB 080229 gB 15 12 52.31 -14 42 16.2           ~ 68 0
112 GRB 051117A gB 15 13 34.020 +30 52 12.30 18.66 19.81       ~ 72 0
113 Fermi bn121125356 gB 15 14 06.58 +55 18 48.0           ~ 40 0
114 GRB 081203A gB 15 32 07.6 +63 31 15           ~ 177 0
115 Fermi bn120922939 gB 15 38 59.67 -20 10 55.0           ~ 88 0
116 GRB 060418 gB 15 45 42.600 -03 38 20.00 15.73 16.19 14.98     ~ 389 0
117 GRB 110715A gB 15 50 44.090 -46 14 06.53           ~ 120 0
118 GRB 060904A gB 15 50 54.560 +44 59 10.51           ~ 77 0
119 Fermi bn110709642 gB 15 55 33.95 +40 55 27.4       21.4   ~ 59 0
120 GRB 060510B gB 15 56 29.200 +78 34 12.00           ~ 155 0
121 GRB 090404 gB 15 56 55.80 +35 31 03.4           ~ 79 0
122 Fermi bn101213451 gB 16 05 15.27 +21 53 50.5           ~ 68 0
123 GRB 070521 gB 16 10 38.600 +30 15 22.70           ~ 164 0
124 Fermi bn110102788 gB 16 23 31.41 +07 36 49.8           ~ 62 0
125 GRB 120327A gB 16 27 27.49 -29 24 53.8           ~ 116 0
126 GRB 050401 gB 16 31 28.84 +02 11 14.5           ~ 348 0
127 GRB 090715B gB 16 45 21.59 +44 50 20.1           ~ 144 0
128 GRB 060223B gB 16 56 58.67 -30 48 35.4           ~ 29 0
129 GRB 150211A gB 16 59 26.21 +55 23 36.2           ~ 24 0
130 GRB 080319C gB 17 15 55.48 +55 23 31.7           ~ 174 0
131 GRB 130722A gB 17 22 36.47 -02 58 22.5           ~ 28 0
132 GRB 110519A gB 17 26 33.00 -23 25 32.2           ~ 14 0
133 GRB 080605 gB 17 28 30.04 +04 00 56.9           ~ 198 0
134 Fermi bn090904058 gB 17 36 44.52 -25 12 45.9           ~ 56 0
135 GRB 111103B gB 17 42 46.37 +01 36 36.3           ~ 41 0
136 Fermi bn090129880 gB 17 56 25.10 -32 47 34.8           ~ 36 0
137 GRB 090418A gB 17 57 15.17 +33 24 21.1           ~ 101 0
138 GRB 121102A gB 18 03 36.22 -16 57 28.4           ~ 24 0
139 Fermi bn120326056 gB 18 15 37.06 +69 15 35.4           ~ 188 0
140 GRB 120909A gB 18 22 56.81 -59 26 54.9           ~ 103 0
141 GRB 111022A gB 18 23 27.27 -23 40 25.9           ~ 21 0
142 GRB 060111A gB 18 24 49.132 +37 36 14.47     18.86     ~ 72 0
143 Fermi bn120102095 gB 18 24 53.89 +24 42 47.1           ~ 42 0
144 GRB 080727B gB 18 27 26.11 +01 09 45.7           ~ 37 0
145 Fermi bn150309958 gB 18 28 24.81 +86 25 43.6           ~ 30 0
146 SN 2005nc SN* 18 32 32.560 +26 20 22.34           SNIc: 400 1
147 GRB 130306A gB 18 37 50.75 -11 40 52.4           ~ 28 0
148 Fermi bn081008832 gB 18 39 52.40 -57 25 58.8           ~ 224 0
149 Fermi bn110731465 gB 18 42 00.99 -28 32 13.8           ~ 193 0
150 GRB 050306 gB 18 49 13.950 -09 09 08.60     19.16     ~ 55 0
151 GRB 110625A gB 19 06 55.85 +06 45 19.2           ~ 69 0
152 GRB 080413A gB 19 09 11.73 -27 40 39.6           ~ 163 0
153 Fermi bn140512814 gB 19 17 28.81 -15 05 39.5           ~ 133 0
154 GRB 090709A gB 19 19 46.70 +60 43 40.8           ~ 125 0
155 Fermi bn100725475 gB 19 20 07 +76 57.3           ~ 55 0
156 GRB 120324A gB 19 24 18.84 +24 07 46.4           ~ 45 0
157 GRB 060413 gB 19 25 07.850 +13 45 29.90           ~ 69 0
158 GRB 101017A gB 19 25 32.56 -35 08 41.4           ~ 33 0
159 GRB 110411A gB 19 25 46.13 +67 42 42.0           ~ 32 0
160 GRB 070917 gB 19 35 40.53 +02 24 40.4           ~ 47 0
161 GRB 090618 gB 19 36 01.80 +78 21 07.1           ~ 358 0
162 GRB 130514A gB 19 45 07.33 -07 58 41.1           ~ 82 0
163 GRB 060105 gB 19 50 00.680 +46 20 55.40           ~ 87 0
164 GRB 100119A gB 19 57 14.00 -53 08 56.7           ~ 14 0
165 Fermi bn121128212 gB 20 02 23.88 +54 17 59.1           ~ 128 0
166 GRB 120213A gB 20 04 02.83 +65 24 40.6           ~ 37 0
167 GRB 131226A gB 20 05 14 -64 56.6           ~ 10 0
168 GRB 071003 gB 20 07 24.50 +10 56 48.8           ~ 181 0
169 Fermi bn140709051 gB 20 18 38.96 +51 13 29.9           ~ 43 0
170 GRB 050315 gB 20 25 54.100 -42 36 02.19           ~ 225 0
171 Fermi bn121123421 gB 20 29 16.30 -11 51 35.6           ~ 58 0
172 Fermi bn110610640 gB 20 32 42.97 +74 49 31.2           ~ 37 0
173 GRB 130527A gB 20 37 06.32 -24 43 30.6           ~ 33 0
174 GRB 110915A gB 20 43 17.87 -00 43 23.2           ~ 44 0
175 GRB 150403A gB 20 46 01.17 -62 42 40.1           ~ 116 0
176 GRB 070508 gB 20 51 11.810 -78 23 04.88     19.62     ~ 144 0
177 GRB 080805 gB 20 56 55.30 -62 25 58.8           ~ 102 0
178 GRB 100621A gB 21 01 13.12 -51 06 22.5           ~ 204 0
179 GRB 070419B gB 21 02 49.820 -31 15 49.30   20.35       ~ 86 0
180 GRB 050922C gB 21 09 33.000 -08 45 30.10 15.15 15.86 14.69     ~ 301 0
181 GRB 101023A gB 21 11 51.26 -65 23 17.7           ~ 71 0
182 GRB 050713A gB 21 22 09.530 +77 04 29.50           ~ 125 0
183 GRB 060614 G 21 23 32.140 -53 01 36.10           ~ 714 0
184 Fermi bn081126899 gB 21 34 03.54 +48 42 35.2           ~ 76 0
185 GRB 070621 gB 21 35 10.17 -24 49 02.6           ~ 70 0
186 Fermi bn140108721 gB 21 40 26.77 +58 44 41.4           ~ 58 0
187 GRB 080413B gB 21 44 34.62 -19 58 51.2           ~ 191 0
188 GRB 121209A gB 21 47 08.94 -08 14 05.8           ~ 50 0
189 GRB 060117 gB 21 51 36.130 -59 58 39.10           ~ 63 0
190 Fermi bn130727698 gB 21 54 -63.3           ~ 29 0
191 GRB 060607 gB 21 58 50.400 -22 29 46.70 18.49 16.67 15.09     ~ 318 0
192 Fermi bn081109293 gB 22 03 11.50 -54 42 40.5           ~ 125 1
193 GRB 090410A gB 22 19 49.40 +15 25 08.6           ~ 23 0
194 GRB 071117 gB 22 20 10.40 -63 26 36.6           ~ 112 0
195 Fermi bn080916406 gB 22 25 09.30 -57 01 33.7           ~ 177 0
196 GRB 110318A gB 22 32 -17.8           ~ 28 0
197 GRB 090301A gB 22 32 34.20 +26 38 19.0           ~ 20 0
198 GRB 050716 gB 22 34 20.730 +38 41 03.60   21.52 20.32     ~ 76 0
199 Fermi bn091024380 gB 22 37 +56.9           ~ 151 0
200 Fermi bn120703726 gB 22 37 25.77 -29 43 24.8           ~ 40 0
201 GRB 060421 gB 22 54 32.990 +62 43 51.90           ~ 44 0
202 GRB 131030A gB 23 00 16.14 -05 22 05.2           ~ 126 0
203 GRB 051111A gB 23 12 33.170 +18 22 28.80 19.77 20.08 19.50     ~ 223 0
204 Fermi bn110119931 gB 23 14 21 +05 58.9           ~ 46 0
205 Fermi bn090301315 gB 23 21.0 +09 09           ~ 18 0
206 GRB 090401A gB 23 23 40.80 +29 45 44.1           ~ 19 0
207 GRB 090812 gB 23 32 48.5 -10 36 17           ~ 165 0
208 GRB 070704 gB 23 38 47.31 +66 15 12.7           ~ 58 0
209 GRB 071025 gB 23 40 17.02 +31 46 42.4           ~ 122 0
210 GRB 110319A gB 23 46 00.62 -66 00 40.2           ~ 26 0
211 Fermi bn080810549 gB 23 47 08.00 +00 18 35.1           ~ 240 0
212 Fermi bn140323433 gB 23 47 50.31 -79 54 16.4           ~ 36 0
213 GRB 130701A gB 23 48 55.05 +36 06 01.2           ~ 81 0
214 GRB 061222A gB 23 53 03.419 +46 31 58.60           ~ 177 0
215 GRB 050117A gB 23 53 47.24 +65 56 00.2           ~ 65 0
216 SN 2013fu SN* 23 54 29.91 +29 25 47.6           SNIb/c 144 1

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