2016A&A...585A..68W


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.24CET00:51:39

2016A&A...585A..68W - Astronomy and Astrophysics, volume 585A, 68-68 (2016/1-1)

Measuring dark energy with the Eiso - Ep correlation of gamma-ray bursts using model-independent methods.

WANG J.S., WANG F.Y., CHENG K.S. and DAI Z.G.

Abstract (from CDS):

We use two model-independent methods to standardize long gamma-ray bursts (GRBs) using the Eiso-Ep correlation (logEiso=a+blogEp), where E_ iso_ is the isotropic-equivalent gamma-ray energy and Ep is the spectral peak energy. We update 42 long GRBs and attempt to constrain the cosmological parameters. The full sample contains 151 long GRBs with redshifts from 0.0331 to 8.2. The first method is the simultaneous fitting method. We take the extrinsic scatter σext into account and assign it to the parameter Eiso. The best-fitting values are a=49.15±0.26, b=1.42±0.11, σext=0.34±0.03 and Ωm=0.79 in the flat ΛCDM model. The constraint on Ωm is 0.55<Ωm<1 at the 1σ confidence level. If reduced χ2 method is used, the best-fit results are a=48.96±0.18, b=1.52±0.08, and Ωm=0.50±0.12. The second method uses type Ia supernovae (SNe Ia) to calibrate the Eiso-Ep correlation. We calibrate 90 high-redshift GRBs in the redshift range from 1.44 to 8.1. The cosmological constraints from these 90 GRBs are Ωm=0.23+0.06–0.04 for flat ΛCDM and Ωm=0.18±0.11 and ΩΛ=0.46±0.51 for non-flat ΛCDM. For the combination of GRB and SNe Ia sample, we obtain Ωm=0.271±0.019 and h=0.701±0.002 for the flat ΛCDM and the non-flat ΛCDM, and the results are Ωm=0.225±0.044, ΩΛ=0.640±0.082, and h=0.698±0.004. These results from calibrated GRBs are consistent with that of SNe Ia. Meanwhile, the combined data can improve cosmological constraints significantly, compared to SNe Ia alone. Our results show that the Eiso-Ep correlation is promising to probe the high-redshift Universe.

Abstract Copyright:

Journal keyword(s): cosmological parameters - dark energy - gamma rays: general

Simbad objects: 68

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Number of rows : 68

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 GRB 021004 gB 00 26 54.68 +18 55 41.6           ~ 517 0
2 GRB 050904 gB 00 54 50.794 +14 05 09.42           ~ 433 0
3 GRB 081222 gB 01 30 57.76 -34 05 44.0           ~ 153 0
4 GRB 060908 gB 02 07 18.360 +00 20 31.20 16.99 18.34 16.85     ~ 177 0
5 GRB 050603 gB 02 39 56.839 -25 10 54.92     18.48     ~ 150 0
6 GRB 100728B gB 02 56 13.44 +00 16 51.5           ~ 101 0
7 GRB 050318 gB 03 18 51.000 -46 23 43.61 18.10 18.68 17.58     ~ 159 0
8 GRB 060115 gB 03 36 08.400 +17 20 43.00           ~ 148 0
9 GRB 091029 gB 04 00 40.00 -55 57 12.7           ~ 120 0
10 GRB 080913 gB 04 22 57.90 -25 07 38.6           ~ 175 0
11 GRB 131105A gB 04 43 53.50 -63 00 17.7           ~ 51 0
12 GRB 060124 gB 05 08 25.900 +69 44 26.98   18.91 17.35     ~ 239 0
13 GRB 081118 gB 05 30 22.28 -43 18 03.1           ~ 64 0
14 GRB 081121 gB 05 57 07.70 -60 36 42.1           ~ 111 0
15 GRB 000131 gB 06 13 31.08 -51 56 41.7     24.7     ~ 161 1
16 GRB 140213A gB 07 00 37.18 -73 08 14.1           ~ 50 0
17 GRB 070125 gB 07 51 17.80 +31 09 04.8           ~ 159 0
18 GRB 071020 gB 07 58 39.65 +32 51 38.8           ~ 134 0
19 GRB 081028 gB 08 07 34.40 +02 18 16.8           ~ 92 0
20 GRB 020127 gB 08 15 05.8 +36 44 31           ~ 60 0
21 GRB 090102 gB 08 32 59.50 +33 06 25.7           ~ 186 0
22 GRB 020124 gB 09 32 50.8 -11 31 11           ~ 144 0
23 GRB 140206A gB 09 41 16.90 +66 45 42.7           ~ 82 0
24 GRB 090423 gB 09 55 33.19 +18 08 57.7           ~ 312 0
25 GRB 030323 gB 11 06 09.4 -21 46 13           ~ 126 1
26 GRB 011211 gB 11 15 16 -21 56.0           ~ 288 0
27 SN 2013cq SN* 11 32 32.84 +27 41 56.2           SNIc 393 1
28 GRB 030226 gB 11 33 04.9 +25 53 56           ~ 189 0
29 GRB 091020 gB 11 42 55.20 +50 58 42.0           ~ 137 0
30 GRB 080603B gB 11 46 07.46 +68 03 38.5           ~ 118 0
31 GRB 971214 gB 11 56 26.4 +65 12 01           ~ 434 1
32 GRB 030328 gB 12 10 48.4 -09 20 51           ~ 138 0
33 GRB 030429 gB 12 13 07.495 -20 54 49.54     23.70     ~ 121 0
34 GRB 090323 gB 12 42 50.28 +17 03 11.9           ~ 185 1
35 GRB 080607 gB 12 59 47.14 +15 55 09.6           ~ 210 0
36 GRB 130420A gB 13 04 25.50 +59 25 26.7           ~ 70 0
37 GRB 120811C gB 13 18 43.82 +62 18 02.8           ~ 69 0
38 GRB 060206 gB 13 31 43.420 +35 03 03.60   19.99 17.09     ~ 286 0
39 GRB 990510 gB 13 38 07.64 -80 29 48.8           ~ 468 1
40 GRB 130907A gB 14 23 34.03 +45 36 27.1           ~ 77 0
41 GRB 010222 G 14 52 12.5 +43 01 06           ~ 337 1
42 GRB 080721 gB 14 57 55.76 -11 43 24.9           ~ 141 0
43 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 966 1
44 GRB 060526 gB 15 31 18.360 +00 17 04.90   18.31 17.16     ~ 237 0
45 GRB 060418 gB 15 45 42.600 -03 38 20.00 15.73 16.19 14.98     ~ 325 0
46 GRB 050401 gB 16 31 28.84 +02 11 14.5           ~ 305 0
47 GRB 090715B gB 16 45 21.58 +44 50 20.1           ~ 100 0
48 GRB 000926 gB 17 04 15 +51 46.0           ~ 343 0
49 GRB 080319C gB 17 15 55.48 +55 23 31.7           ~ 138 0
50 GRB 080605 gB 17 28 30.04 +04 00 56.9           ~ 154 0
51 GRB 090902B gB 17 39 45.26 +27 19 28.1           ~ 335 0
52 GRB 090418 gB 17 57 15.2 +33 24 22           ~ 22 0
53 GRB 081008 gB 18 39 52.40 -57 25 58.8           ~ 159 0
54 GRB 071003 gB 20 07 24.50 +10 56 48.8           ~ 142 0
55 GRB 050922C gB 21 09 33.000 -08 45 30.10 15.15 15.86 14.69     ~ 254 0
56 GRB 080514B gB 21 31 22.61 +00 42 30.3           ~ 59 0
57 GRB 060927A gB 21 58 11.930 +05 21 50.32           ~ 176 0
58 GRB 051109A gB 22 01 15.320 +40 49 23.70   20.09 20.14     ~ 151 0
59 GRB 131117A gB 22 09 19.47 -31 45 44.5           ~ 42 0
60 GRB 050820A gB 22 29 38.110 +19 33 37.10 18.33 19.00 18.47     ~ 341 0
61 GRB 131030A gB 23 00 16.14 -05 22 05.2           ~ 79 0
62 GRB 090812 gB 23 32 48.5 -10 36 17           ~ 123 0
63 GRB 090926A gB 23 33 36.18 -66 19 25.9           ~ 257 0
64 GRB 080810 gB 23 47 08.00 +00 18 35.1           ~ 181 0
65 GRB 060707 gB 23 48 19.000 -17 54 17.00     19.79     ~ 138 0
66 GRB 130701A gB 23 48 55.05 +36 06 01.3           ~ 55 0
67 SN 2013fu SN* 23 54 29.91 +29 25 47.6           SNIb/c 97 1
68 GRB 040912 gB 23 56 43.0 -00 55 20           ~ 35 0

    Equat.    Gal    SGal    Ecl

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2021.01.24-00:51:39

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