GRB 080913 at redshift 6.7
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GRB 080913 at redshift 6.7. / Greiner, J.; Krühler, 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.; Yoldas, A. Küpcü; Mészáros, 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.; Wiersema, K.
In: Astrophysical Journal, Vol. 693, No. 2, 2009, p. 1610-1620.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - GRB 080913 at redshift 6.7
AU - Greiner, J.
AU - Krühler, T.
AU - Fynbo, J. P. U.
AU - Rossi, A.
AU - Schwarz, R.
AU - Klose, S.
AU - Savaglio, S.
AU - Tanvir, N. R.
AU - McBreen, S.
AU - Totani, T.
AU - Zhang, B. B.
AU - Wu, X. F.
AU - Watson, D.
AU - Barthelmy, S. D.
AU - Beardmore, A. P.
AU - Ferrero, P.
AU - Gehrels, N.
AU - Kann, D. A.
AU - Kawai, N.
AU - Yoldas, A. Küpcü
AU - Mészáros, P.
AU - Milvang-Jensen, B.
AU - Oates, S. R.
AU - Pierini, D.
AU - Schady, P.
AU - Toma, K.
AU - Vreeswijk, P. M.
AU - Yoldas, A.
AU - Zhang, B.
AU - Afonso, P.
AU - Aoki, K.
AU - Burrows, D. N.
AU - Clemens, C.
AU - Filgas, R.
AU - Haiman, Z.
AU - Hartmann, D. H.
AU - Hasinger, G.
AU - Hjorth, J.
AU - Jehin, E.
AU - Levan, A. J.
AU - Liang, E. W.
AU - Malesani, D.
AU - Pyo, T.-S.
AU - Schulze, S.
AU - Szokoly, G.
AU - Terada, K.
AU - Wiersema, K.
N1 - Keywords: early universe; gamma rays: bursts; radiation mechanisms: non-thermal
PY - 2009
Y1 - 2009
N2 - 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 ¿ = 9400 Å, and zero flux for 7500 Å<¿ < 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.
AB - 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 ¿ = 9400 Å, and zero flux for 7500 Å<¿ < 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.
U2 - 10.1088/0004-637X/693/2/1610
DO - 10.1088/0004-637X/693/2/1610
M3 - Journal article
VL - 693
SP - 1610
EP - 1620
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2
ER -
ID: 13012173