2009MNRAS.392...91V

Query : 2009MNRAS.392...91V

2009MNRAS.392...91V - Mon. Not. R. Astron. Soc., 392, 91-103 (2009/January-1)

Low-luminosity gamma-ray bursts as a distinct GRB population: a firmer case from multiple criteria constraints.

VIRGILI F.J., LIANG E.-W. and ZHANG B.

Abstract (from CDS):

The intriguing observations of the Swift/Burst Alert Telescope (BAT) X-ray flash (XRF) 060218 and the BATSE-BeppoSAX gamma-ray burst GRB 980425, both with much lower luminosity and redshift compared to other observed bursts, naturally lead to the question of how these low-luminosity (LL) bursts are related to high-luminosity (HL) bursts. Incorporating the constraints from both the flux-limited samples observed with Compton Gamma-ray Observatory (CGRO)/BATSE and Swift/BAT and the redshift-known gamma-ray burst (GRB) sample, we investigate the luminosity function for both LL and HL GRBs through simulations. Our multiple criteria, including the logN - logP distributions from the flux-limited GRB sample, the redshift and luminosity distributions of the redshift-known sample and the detection ratio of HL and LL GRBs with Swift/BAT, provide a set of stringent constraints to the luminosity function. Assuming that the GRB rate follows the star formation rate (SFR), our simulations show that a simple power law (PL) or a broken power-law model of luminosity function fails to reproduce the observations and a new component is required. This component can be modelled with a broken power, which is characterized by a sharp increase in the burst number at around L < 1047 erg/s. The lack of detection of moderate-luminosity GRBs at redshift ∼0.3 indicates that this feature is not due to the observational biases. The inferred local rate, ρ0, of LL GRBs from our model is ∼200/Gpc3/yr at ∼1047 erg/s, much larger than that of HL GRBs. These results imply that LL GRBs could be a separate GRB population from HL GRBs. The recent discovery of a local X-ray transient 080109/SN 2008D would strengthen our conclusion if the observed non-thermal emission has a similar origin as the prompt emission of most GRBs and XRFs.

Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): gamma-rays: bursts - gamma-ray: observations - methods: statistical

Simbad objects: 97

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Number of rows : 97
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 070110 gB 00 03 39.270 -52 58 27.00 21.8 21.9 21.2     ~ 220 0
2 GRB 070611 gB 00 07 58.000 -29 45 19.40           ~ 94 0
3 GRB 060912 gB 00 21 08.160 +20 58 17.80 17.61   17.56     ~ 42 0
4 GRB 021004 gB 00 26 54.68 +18 55 41.6           ~ 560 0
5 GRB 050824 gB 00 48 56.100 +22 36 32.00 19.66 21.03 20.46 23.70   ~ 184 0
6 GRB 041006 gB 00 54 50.17 +01 14 07.0           ~ 202 2
7 GRB 050904 gB 00 54 50.794 +14 05 09.42           ~ 496 0
8 GRB 050908 gB 01 21 50.750 -12 57 17.20           ~ 179 0
9 GRB 040924 gB 02 06 22.52 +16 08 48.8           ~ 169 1
10 GRB 050603 gB 02 39 56.839 -25 10 54.92     18.48     ~ 174 0
11 GRB 060906 gB 02 43 00.900 +30 21 42.12     19.84     ~ 147 0
12 GRB 061007 gB 03 05 19.510 -50 30 02.50 14.28 14.40 12.95     ~ 315 1
13 GRB 070318 gB 03 13 56.830 -42 56 46.30 18.27 16.23 15.49     ~ 170 0
14 GRB 050318 gB 03 18 51.000 -46 23 43.61 18.10 18.68 17.58     ~ 189 0
15 SN 2006aj SN* 03 21 39.670 +16 52 02.27 17.96 19.11 17.40     SNIc-BL 1007 1
16 GRB 060115 gB 03 36 08.400 +17 20 43.00           ~ 179 0
17 GRB 060210 gB 03 50 57.370 +27 01 34.40   20.27       ~ 275 0
18 GRB 060904B gB 03 52 50.520 -00 43 30.61 18.27 19.14 18.37     ~ 208 0
19 GRB 080913 gB 04 22 57.90 -25 07 38.6           ~ 213 0
20 GRB 970228 gB 05 01 46.7 +11 46 53           ~ 650 1
21 GRB 060124 gB 05 08 25.900 +69 44 26.98   18.91 17.35     ~ 280 0
22 GRB 991216 gB 05 09 31.2983 +11 17 07.262           ~ 430 0
23 GRB 990705 gB 05 09 54.5 -72 07 53           ~ 229 1
24 GRB 050826 gB 05 51 01.590 -02 38 35.40           ~ 136 0
25 GRB 061004 gB 06 31 10.710 -45 54 28.71           ~ 51 0
26 GRB 970508 gB 06 53 49.2 +79 16 19           ~ 883 1
27 GRB 061222B gB 07 01 24.600 -25 51 36.00     19.87     ~ 87 0
28 GRB 070411 gB 07 09 19.930 +01 03 52.60     17.94     ~ 138 0
29 SN 2003lw SN* 08 02 30.1 -39 51 03       20.23   SNIc: 576 0
30 GRB 070612 gB 08 05.4 +37 15           ~ 13 0
31 SN 2002lt SN* 08 08 59.858 +06 43 37.52           SNIc: 363 1
32 GRB 051227 gB 08 20 58.107 +31 55 32.01           ~ 127 0
33 GRB 980326 gB 08 36 34.3 -18 51 24           ~ 268 0
34 GRB 051016B gB 08 48 27.810 +13 39 20.00 20.45         ~ 153 0
35 SN 2008D SN* 09 09 30.625 +33 08 20.16     17.5     SNIb 458 1
36 GRB 050505 gB 09 27 03.300 +30 16 23.70     20.74     ~ 206 0
37 GRB 061121 gB 09 48 54.570 -13 11 42.68 17.19 17.71 17.02     ~ 350 0
38 GRB 070306 gB 09 52 23.220 +10 28 55.20           ~ 222 1
39 GRB 050319 gB 10 16 47.900 +43 32 53.80   18.02 17.01     ~ 274 0
40 GRB 980613 gB 10 17 57.8 +71 27 26           ~ 204 1
41 SN 2003dh SN* 10 44 50.030 +21 31 18.15     16.2     SNIcpec 1261 1
42 GRB 030323 gB 11 06 09.4 -21 46 13           ~ 138 1
43 GRB 011211 gB 11 15 16 -21 56.0           ~ 305 0
44 GRB 030226 gB 11 33 04.9 +25 53 56           ~ 212 0
45 GRB 011121 gB 11 34 26.67 -76 01 41.6       23.0   ~ 286 1
46 GRB 990506 gB 11 54 41 -26 45.0           ~ 169 1
47 GRB 971214 gB 11 56 26.4 +65 12 01           ~ 445 1
48 GRB 030328 gB 12 10 48.4 -09 20 51           ~ 148 0
49 GRB 030429 gB 12 13 07.495 -20 54 49.54     23.70     ~ 132 0
50 GRB 000418 gB 12 25 21 +20 05.0           ~ 219 0
51 GRB 050416 gB 12 33 54.600 +21 03 26.69     19.12     ~ 300 1
52 GRB 060512 gB 13 03 05.810 +41 11 27.21 19.12 19.63 17.20     ~ 142 0
53 GRB 070208 gB 13 11 32.607 +61 57 54.37 20.79 20.79 19.86     ~ 119 0
54 GRB 060206 gB 13 31 43.420 +35 03 03.60   19.99 17.09     ~ 330 0
55 GRB 990510 gB 13 38 07.64 -80 29 48.8           ~ 499 1
56 GRB 020405 gB 13 58 03.12 -31 22 22.2   21.9 21.5     ~ 259 1
57 GRB 050730 gB 14 08 17.090 -03 46 18.90   20.32 17.68     ~ 327 0
58 GRB 050802 gB 14 37 05.820 +27 47 12.62 16.85 17.38 16.97     ~ 186 0
59 GRB 060714 gB 15 11 26.450 -06 33 58.30   20.21 18.54     ~ 209 0
60 GRB 020531 gB 15 14 55.8 -19 24 54           ~ 60 0
61 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 1012 1
62 GRB 060526 gB 15 31 18.360 +00 17 04.90   18.31 17.16     ~ 288 0
63 GRB 060418 gB 15 45 42.600 -03 38 20.00 15.73 16.19 14.98     ~ 389 0
64 GRB 060510B gB 15 56 29.200 +78 34 12.00           ~ 155 0
65 GRB 060502A gB 16 03 42.480 +66 36 02.49     18.65     ~ 143 0
66 GRB 000301C gB 16 20 18.5 +29 26 35           ~ 361 0
67 UGCS J162444.39-273226.8 G 16 24 44.38275 -27 32 26.8381     19.70     ~ 469 1
68 GRB 050401 gB 16 31 28.84 +02 11 14.5           ~ 348 0
69 GRB 991208 gB 16 33 53.51 +46 27 21.5           ~ 269 1
70 GRB 000926 gB 17 04 15 +51 46.0           ~ 373 0
71 GRB 060926 gB 17 35 43.660 +13 02 18.60     19.36     ~ 135 0
72 GRB 970828 gB 18 08 31.6 +59 18 51           ~ 353 1
73 GRB 050126 gB 18 32 27.22 +42 22 14.2           ~ 129 0
74 SN 2005nc SN* 18 32 32.560 +26 20 22.34           SNIc: 400 1
75 GRB 070529 gB 18 54 58.230 +20 39 34.00 20.38   17.25     ~ 98 0
76 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1928 2
77 GRB 020813A gB 19 46 41.874 -19 36 04.81           ~ 316 0
78 GRB 050315 gB 20 25 54.100 -42 36 02.19           ~ 225 0
79 GRB 040701 G 20 47 46.3 -40 14 13           ~ 45 1
80 GRB 050922C gB 21 09 33.000 -08 45 30.10 15.15 15.86 14.69     ~ 301 0
81 GRB 060614 G 21 23 32.140 -53 01 36.10           ~ 714 0
82 GRB 060605 gB 21 28 37.320 -06 03 31.30   20.12 16.53     ~ 210 0
83 GRB 060522 gB 21 31 44.850 +02 53 10.80           ~ 140 0
84 GRB 061110B gB 21 35 40.400 +06 52 34.10           ~ 91 0
85 GRB 051221 G 21 54 48.626 +16 53 27.16 19.49         ~ 377 0
86 GRB 060607 gB 21 58 50.400 -22 29 46.70 18.49 16.67 15.09     ~ 318 0
87 GRB 051109 gB 22 01 11.0 +40 50 15           ~ 34 0
88 GRB 061110A gB 22 25 09.800 -02 15 30.70 21.43         ~ 134 0
89 GRB 060604 gB 22 28 55.010 -10 54 55.80 20.34 20.31       ~ 134 0
90 GRB 050820A gB 22 29 38.110 +19 33 37.10 18.33 19.00 18.47     ~ 409 0
91 GRB 990712 gB 22 31 53.061 -73 24 28.58           ~ 268 1
92 GRB 020903 gB 22 48 42.34 -20 46 09.3           ~ 248 1
93 GRB 010921 gB 22 55 59.90 +40 55 52.9           ~ 173 1
94 GRB 070506 gB 23 08 52.390 +10 43 20.30     19.04     ~ 86 0
95 GRB 051111A gB 23 12 33.170 +18 22 28.80 19.77 20.08 19.50     ~ 223 0
96 GRB 060707 gB 23 48 19.000 -17 54 17.00     19.79     ~ 170 0
97 GRB 980703 gB 23 59 06.7 +08 35 07           ~ 453 1

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