2009ApJ...693.1610G

Query : 2009ApJ...693.1610G

2009ApJ...693.1610G - Astrophys. J., 693, 1610-1620 (2009/March-2)

GRB 080913 at redshift 6.7.

GREINER J., KRUHLER T., FYNBO J.P.U., ROSSI A., SCHWARZ R., KLOSE S., SAVAGLIO S., TANVIR N.R., McBREEN S., TOTANI T., ZHANG B.B., WU X.F., WATSON D., BARTHELMY S.D., BEARDMORE A.P., FERRERO P., GEHRELS N., KANN D.A., KAWAI N., KUPCU YOLDAS A., MESZAROS P., MILVANG-JENSEN B., OATES S.R., PIERINI D., SCHADY P., TOMA K., VREESWIJK P.M., YOLDAS A., ZHANG B., AFONSO P., AOKI K., BURROWS D.N., CLEMENS C., FILGAS R., HAIMAN Z., HARTMANN D.H., HASINGER G., HJORTH J., JEHIN E., LEVAN A.J., LIANG E.W., MALESANI D., PYO T.-S., SCHULZE S., SZOKOLY G., TERADA K. and WIERSEMA K.

Abstract (from CDS):

We report on the detection by Swift of GRB 080913, and subsequent optical/near-infrared follow-up observations by GROND, which led to the discovery of its optical/NIR afterglow and the recognition of its high-z nature via the detection of a spectral break between the i' and z' bands. Spectroscopy obtained at the ESO-VLT revealed a continuum extending down to λ = 9400 Å, and zero flux for 7500 Å<λ < 9400 Å, which we interpret as the onset of a Gunn-Peterson trough at z = 6.695± 0.025 (95.5% confidence level), making GRB 080913 the highest-redshift gamma-ray burst (GRB) to date, and more distant than the highest-redshift QSO. We note that many redshift indicators that are based on promptly available burst or afterglow properties have failed for GRB 080913. We report on our follow-up campaign and compare the properties of GRB 080913 with bursts at lower redshift. In particular, since the afterglow of this burst is fainter than typical for GRBs, we show that 2 m class telescopes can identify most high-redshift GRBs.

Abstract Copyright: ∼

Journal keyword(s): early universe - gamma rays: bursts - radiation mechanisms: non-thermal

Nomenclature: Table 2: [GKF2009] N (Nos 1-9).

Simbad objects: 29

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Number of rows : 29
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11149 1
2 GRB 050904 gB 00 54 50.794 +14 05 09.42           ~ 470 0
3 GRB 060223 gB 03 40 52.0 -17 08 19           ~ 25 0
4 GRB 070714B gB 03 51 22.30 +28 17 51.3           ~ 216 1
5 GSC 00066-00917 * 03 55 09.3924224328 +00 01 20.553083112 13.612 13.515 12.927 12.556 12.182 ~ 6 0
6 [GKF2009] 9 * 04 22 52.6950389976 -25 08 37.189632480           ~ 1 0
7 [GKF2009] 3 * 04 22 53.9 -25 07 37           ~ 1 0
8 [GKF2009] 6 * 04 22 54.2169800664 -25 07 57.620500896           ~ 1 0
9 [GKF2009] 2 * 04 22 54.4 -25 07 27           ~ 1 0
10 [GKF2009] 4 * 04 22 55.2180742584 -25 07 39.136835820           ~ 1 0
11 [GKF2009] 5 * 04 22 55.3 -25 07 49           ~ 1 0
12 [GKF2009] 7 * 04 22 55.8275614200 -25 08 04.614704268           ~ 1 0
13 [GKF2009] 1 * 04 22 56.1 -25 07 10           ~ 1 0
14 [GKF2009] 8 * 04 22 57.4 -25 08 11           ~ 1 0
15 GRB 080913 gB 04 22 57.90 -25 07 38.6           ~ 193 0
16 GRB 060313 gB 04 26 28.180 -10 50 37.95 20.55 21.03 19.66     ~ 146 0
17 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17434 0
18 GRB 060121 gB 09 09 51.930 +45 39 45.41           ~ 123 1
19 GRB 050416 gB 12 33 54.600 +21 03 26.69     19.12     ~ 283 1
20 GRB 060206 gB 13 31 43.420 +35 03 03.60   19.99 17.09     ~ 313 0
21 GRB 050730 gB 14 08 17.090 -03 46 18.90   20.32 17.68     ~ 313 0
22 GRB 080319B gB 14 31 41.04 +36 18 09.2           ~ 467 0
23 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 989 1
24 GRB 050814 gB 17 36 45.390 +46 20 21.60           ~ 152 0
25 GRB 060614 gB 21 23 32.140 -53 01 36.10 18.89 20.12 19.54     ~ 612 1
26 GRB 060522 gB 21 31 44.850 +02 53 10.80           ~ 131 0
27 GRB 051221 gB 21 54 48.626 +16 53 27.16 19.49         ~ 351 1
28 GRB 060927A gB 21 58 11.930 +05 21 50.32           ~ 196 0
29 CFHQS J232908-030158 QSO 23 29 08.28000 -03 01 58.7996           ~ 75 0

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