GRB 080913 at redshift 6.7

J. Greiner, T. Kruhler, J. P.U. Fynbo, A. Rossi, R. Schwarz, S. Klose, S. Savaglio, N. R. Tanvir, S. McBreen, T. Totani, B. B. Zhang, X. F. Wu, D. Watson, S. D. Barthelmy, A. P. Beardmore, P. Ferrero, N. Gehrels, D. A. Kann, N. Kawai, A. Kupcu Yoldaş & 27 others Peter Istvan Meszaros, B. Milvang-Jensen, S. R. Oates, D. Pierini, P. Schady, K. Toma, P. M. Vreeswijk, A. Yoldaş, B. Zhang, P. Afonso, K. Aoki, David Nelson Burrows, C. Clemens, R. Filgas, Z. Haiman, D. H. Hartmann, G. Hasinger, J. Hjorth, E. Jehin, A. J. Levan, E. W. Liang, D. Malesani, T. S. Pyo, S. Schulze, G. Szokoly, K. Terada, K. Wiersema

Research output: Contribution to journalArticle

175 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)1610-1620
Number of pages11
JournalAstrophysical Journal
Volume693
Issue number2
DOIs
StatePublished - Mar 10 2009

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gamma ray bursts
afterglows
bursts
near infrared
trough
spectroscopy
European Southern Observatory
troughs
quasars
confidence
detection
telescopes
continuums
indicator

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Greiner, J., Kruhler, T., Fynbo, J. P. U., Rossi, A., Schwarz, R., Klose, S., ... Wiersema, K. (2009). GRB 080913 at redshift 6.7. Astrophysical Journal, 693(2), 1610-1620. https://doi.org/10.1088/0004-637X/693/2/1610
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. ; Yoldaş, A. Kupcu ; Meszaros, Peter Istvan ; Milvang-Jensen, B. ; Oates, S. R. ; Pierini, D. ; Schady, P. ; Toma, K. ; Vreeswijk, P. M. ; Yoldaş, A. ; Zhang, B. ; Afonso, P. ; Aoki, K. ; Burrows, David Nelson ; 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. / GRB 080913 at redshift 6.7. In: Astrophysical Journal. 2009 ; Vol. 693, No. 2. pp. 1610-1620.
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Greiner, J, Kruhler, T, Fynbo, JPU, Rossi, A, Schwarz, R, Klose, S, Savaglio, S, Tanvir, NR, McBreen, S, Totani, T, Zhang, BB, Wu, XF, Watson, D, Barthelmy, SD, Beardmore, AP, Ferrero, P, Gehrels, N, Kann, DA, Kawai, N, Yoldaş, AK, Meszaros, PI, Milvang-Jensen, B, Oates, SR, Pierini, D, Schady, P, Toma, K, Vreeswijk, PM, Yoldaş, A, Zhang, B, Afonso, P, Aoki, K, Burrows, DN, Clemens, C, Filgas, R, Haiman, Z, Hartmann, DH, Hasinger, G, Hjorth, J, Jehin, E, Levan, AJ, Liang, EW, Malesani, D, Pyo, TS, Schulze, S, Szokoly, G, Terada, K & Wiersema, K 2009, 'GRB 080913 at redshift 6.7', Astrophysical Journal, vol. 693, no. 2, pp. 1610-1620. https://doi.org/10.1088/0004-637X/693/2/1610

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.; Yoldaş, A. Kupcu; Meszaros, Peter Istvan; Milvang-Jensen, B.; Oates, S. R.; Pierini, D.; Schady, P.; Toma, K.; Vreeswijk, P. M.; Yoldaş, A.; Zhang, B.; Afonso, P.; Aoki, K.; Burrows, David Nelson; 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, 10.03.2009, p. 1610-1620.

Research output: Contribution to journalArticle

TY - JOUR

T1 - GRB 080913 at redshift 6.7

AU - Greiner, J.

AU - Kruhler, 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 - Yoldaş, A. Kupcu

AU - Meszaros, Peter Istvan

AU - Milvang-Jensen, B.

AU - Oates, S. R.

AU - Pierini, D.

AU - Schady, P.

AU - Toma, K.

AU - Vreeswijk, P. M.

AU - Yoldaş, A.

AU - Zhang, B.

AU - Afonso, P.

AU - Aoki, K.

AU - Burrows, David Nelson

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.

PY - 2009/3/10

Y1 - 2009/3/10

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 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.

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 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.

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Greiner J, Kruhler T, Fynbo JPU, Rossi A, Schwarz R, Klose S et al. GRB 080913 at redshift 6.7. Astrophysical Journal. 2009 Mar 10;693(2):1610-1620. https://doi.org/10.1088/0004-637X/693/2/1610