Very high column density and small reddening toward GRB 020124 at z = 3.20

J. Hjorth, P. Møller, J. Gorosabel, J. P U Fynbo, S. Toft, A. O. Jaunsen, A. A. Kaas, T. Pursimo, K. Torii, T. Kato, H. Yamaoka, A. Yoshida, B. Thomsen, M. I. Andersen, I. Burud, J. M. Castro Cerón, A. J. Castro-Tirado, A. S. Fruchter, L. Kaper, C. KouveliotouN. Masetti, E. Palazzi, H. Pedersen, E. Pian, J. Rhoads, E. Rol, N. R. Tanvir, P. M. Vreeswijk, R. A M J Wijers, E. P J Van den Heuvel

Research output: Contribution to journalArticle

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Abstract

We present optical and near-infrared observations of the dim afterglow of GRB 020124, obtained between 2 and 68 hr after the gamma-ray burst. The burst occurred in a very faint (R ≲ 29.5) damped Lyα absorber (DLA) at a redshift of z = 3.198 ± 0.004. The derived column density of neutral hydrogen is log(NH I) = 21.7 ± 0.2, and the rest-frame reddening is constrained to be E(B- V) < 0.065, i.e., AV < 0. 20 for standard extinction laws with Rv ≈ 3. The resulting dust-to-gas ratio is less than 11% of that found in the Milky Way but consistent with the SMC and high-redshift QSO DLAs, indicating a low metallicity and/or a low dust-to-metal ratio in the burst environment. A gray extinction law (large Rv), produced through preferential destruction of small dust grains by the gamma-ray burst, could increase the derived A v and dust-to-gas ratio. The dimness of the afterglow is, however, fully accounted for by the high redshift: if GRB 020124 had been at z = 1, it would have been approximately 1.8 mag brighter - in the range of typical bright afterglows.

Original languageEnglish (US)
Pages (from-to)699-705
Number of pages7
JournalAstrophysical Journal
Volume597
Issue number2 I
DOIs
StatePublished - Nov 10 2003
Externally publishedYes

Fingerprint

dust
afterglows
gamma ray bursts
bursts
extinction
gases
gas
quasars
destruction
metallicity
absorbers
near infrared
hydrogen
metal
metals

Keywords

  • Cosmology: observations
  • Dust, extinction
  • Galaxies: abundances galaxies: ISM
  • Gamma rays: bursts

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Hjorth, J., Møller, P., Gorosabel, J., Fynbo, J. P. U., Toft, S., Jaunsen, A. O., ... Van den Heuvel, E. P. J. (2003). Very high column density and small reddening toward GRB 020124 at z = 3.20. Astrophysical Journal, 597(2 I), 699-705. https://doi.org/10.1086/378493

Very high column density and small reddening toward GRB 020124 at z = 3.20. / Hjorth, J.; Møller, P.; Gorosabel, J.; Fynbo, J. P U; Toft, S.; Jaunsen, A. O.; Kaas, A. A.; Pursimo, T.; Torii, K.; Kato, T.; Yamaoka, H.; Yoshida, A.; Thomsen, B.; Andersen, M. I.; Burud, I.; Castro Cerón, J. M.; Castro-Tirado, A. J.; Fruchter, A. S.; Kaper, L.; Kouveliotou, C.; Masetti, N.; Palazzi, E.; Pedersen, H.; Pian, E.; Rhoads, J.; Rol, E.; Tanvir, N. R.; Vreeswijk, P. M.; Wijers, R. A M J; Van den Heuvel, E. P J.

In: Astrophysical Journal, Vol. 597, No. 2 I, 10.11.2003, p. 699-705.

Research output: Contribution to journalArticle

Hjorth, J, Møller, P, Gorosabel, J, Fynbo, JPU, Toft, S, Jaunsen, AO, Kaas, AA, Pursimo, T, Torii, K, Kato, T, Yamaoka, H, Yoshida, A, Thomsen, B, Andersen, MI, Burud, I, Castro Cerón, JM, Castro-Tirado, AJ, Fruchter, AS, Kaper, L, Kouveliotou, C, Masetti, N, Palazzi, E, Pedersen, H, Pian, E, Rhoads, J, Rol, E, Tanvir, NR, Vreeswijk, PM, Wijers, RAMJ & Van den Heuvel, EPJ 2003, 'Very high column density and small reddening toward GRB 020124 at z = 3.20', Astrophysical Journal, vol. 597, no. 2 I, pp. 699-705. https://doi.org/10.1086/378493
Hjorth J, Møller P, Gorosabel J, Fynbo JPU, Toft S, Jaunsen AO et al. Very high column density and small reddening toward GRB 020124 at z = 3.20. Astrophysical Journal. 2003 Nov 10;597(2 I):699-705. https://doi.org/10.1086/378493
Hjorth, J. ; Møller, P. ; Gorosabel, J. ; Fynbo, J. P U ; Toft, S. ; Jaunsen, A. O. ; Kaas, A. A. ; Pursimo, T. ; Torii, K. ; Kato, T. ; Yamaoka, H. ; Yoshida, A. ; Thomsen, B. ; Andersen, M. I. ; Burud, I. ; Castro Cerón, J. M. ; Castro-Tirado, A. J. ; Fruchter, A. S. ; Kaper, L. ; Kouveliotou, C. ; Masetti, N. ; Palazzi, E. ; Pedersen, H. ; Pian, E. ; Rhoads, J. ; Rol, E. ; Tanvir, N. R. ; Vreeswijk, P. M. ; Wijers, R. A M J ; Van den Heuvel, E. P J. / Very high column density and small reddening toward GRB 020124 at z = 3.20. In: Astrophysical Journal. 2003 ; Vol. 597, No. 2 I. pp. 699-705.
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abstract = "We present optical and near-infrared observations of the dim afterglow of GRB 020124, obtained between 2 and 68 hr after the gamma-ray burst. The burst occurred in a very faint (R ≲ 29.5) damped Lyα absorber (DLA) at a redshift of z = 3.198 ± 0.004. The derived column density of neutral hydrogen is log(NH I) = 21.7 ± 0.2, and the rest-frame reddening is constrained to be E(B- V) < 0.065, i.e., AV < 0. 20 for standard extinction laws with Rv ≈ 3. The resulting dust-to-gas ratio is less than 11{\%} of that found in the Milky Way but consistent with the SMC and high-redshift QSO DLAs, indicating a low metallicity and/or a low dust-to-metal ratio in the burst environment. A gray extinction law (large Rv), produced through preferential destruction of small dust grains by the gamma-ray burst, could increase the derived A v and dust-to-gas ratio. The dimness of the afterglow is, however, fully accounted for by the high redshift: if GRB 020124 had been at z = 1, it would have been approximately 1.8 mag brighter - in the range of typical bright afterglows.",
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T1 - Very high column density and small reddening toward GRB 020124 at z = 3.20

AU - Hjorth, J.

AU - Møller, P.

AU - Gorosabel, J.

AU - Fynbo, J. P U

AU - Toft, S.

AU - Jaunsen, A. O.

AU - Kaas, A. A.

AU - Pursimo, T.

AU - Torii, K.

AU - Kato, T.

AU - Yamaoka, H.

AU - Yoshida, A.

AU - Thomsen, B.

AU - Andersen, M. I.

AU - Burud, I.

AU - Castro Cerón, J. M.

AU - Castro-Tirado, A. J.

AU - Fruchter, A. S.

AU - Kaper, L.

AU - Kouveliotou, C.

AU - Masetti, N.

AU - Palazzi, E.

AU - Pedersen, H.

AU - Pian, E.

AU - Rhoads, J.

AU - Rol, E.

AU - Tanvir, N. R.

AU - Vreeswijk, P. M.

AU - Wijers, R. A M J

AU - Van den Heuvel, E. P J

PY - 2003/11/10

Y1 - 2003/11/10

N2 - We present optical and near-infrared observations of the dim afterglow of GRB 020124, obtained between 2 and 68 hr after the gamma-ray burst. The burst occurred in a very faint (R ≲ 29.5) damped Lyα absorber (DLA) at a redshift of z = 3.198 ± 0.004. The derived column density of neutral hydrogen is log(NH I) = 21.7 ± 0.2, and the rest-frame reddening is constrained to be E(B- V) < 0.065, i.e., AV < 0. 20 for standard extinction laws with Rv ≈ 3. The resulting dust-to-gas ratio is less than 11% of that found in the Milky Way but consistent with the SMC and high-redshift QSO DLAs, indicating a low metallicity and/or a low dust-to-metal ratio in the burst environment. A gray extinction law (large Rv), produced through preferential destruction of small dust grains by the gamma-ray burst, could increase the derived A v and dust-to-gas ratio. The dimness of the afterglow is, however, fully accounted for by the high redshift: if GRB 020124 had been at z = 1, it would have been approximately 1.8 mag brighter - in the range of typical bright afterglows.

AB - We present optical and near-infrared observations of the dim afterglow of GRB 020124, obtained between 2 and 68 hr after the gamma-ray burst. The burst occurred in a very faint (R ≲ 29.5) damped Lyα absorber (DLA) at a redshift of z = 3.198 ± 0.004. The derived column density of neutral hydrogen is log(NH I) = 21.7 ± 0.2, and the rest-frame reddening is constrained to be E(B- V) < 0.065, i.e., AV < 0. 20 for standard extinction laws with Rv ≈ 3. The resulting dust-to-gas ratio is less than 11% of that found in the Milky Way but consistent with the SMC and high-redshift QSO DLAs, indicating a low metallicity and/or a low dust-to-metal ratio in the burst environment. A gray extinction law (large Rv), produced through preferential destruction of small dust grains by the gamma-ray burst, could increase the derived A v and dust-to-gas ratio. The dimness of the afterglow is, however, fully accounted for by the high redshift: if GRB 020124 had been at z = 1, it would have been approximately 1.8 mag brighter - in the range of typical bright afterglows.

KW - Cosmology: observations

KW - Dust, extinction

KW - Galaxies: abundances galaxies: ISM

KW - Gamma rays: bursts

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DO - 10.1086/378493

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VL - 597

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JF - Astrophysical Journal

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