GRB 081203A

Swift UVOT captures the earliest ultraviolet spectrum of a gamma-ray burst

N. P.M. Kuin, W. Landsman, M. J. Page, P. Schady, M. Still, A. A. Breeveld, M. De Pasquale, P. W.A. Roming, P. J. Brown, M. Carter, C. James, P. A. Curran, A. Cucchiara, Caryl Ann Gronwall, S. T. Holland, E. A. Hoversten, S. Hunsberger, T. Kennedy, S. Koch, H. Lamoureux & 5 others F. E. Marshall, S. R. Oates, A. Parsons, D. M. Palmer, P. J. Smith

Research output: Contribution to journalLetter

32 Citations (Scopus)

Abstract

We present the earliest ultraviolet (UV) spectrum of a gamma-ray burst (GRB) as observed with the Swift Ultra-Violet/Optical Telescope (UVOT). The GRB 081203A spectrum was observed for 50 s with the UV-grism starting 251 s after the Swift-Burst-Alert-Telescope (BAT) trigger. During this time, the GRB was ≈13.4 mag (u filter) and was still rising to its peak optical brightness. In the UV-grism spectrum, we find a damped Lyα line, Lyβ and the Lyman continuum break at a redshift z = 2.05 ± 0.01. A model At to the Lyman absorption implies a gas column density of log NHI = 22.0 ± 0.1 cm-2, which is typical of GRB host galaxies with damped Lyα absorbers. This observation of GRB 081203A demonstrates that for brighter GRBs (υ ≈ 14 mag) with moderate redshift (0.5 < z < 3.5) the UVOT is able to provide redshifts, and probe for damped Lyα absorbers within 4-6 min from the time of the Swift-BAT trigger.

Original languageEnglish (US)
JournalMonthly Notices of the Royal Astronomical Society: Letters
Volume395
Issue number1
DOIs
StatePublished - May 1 2009

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ultraviolet spectra
gamma ray bursts
telescopes
bursts
absorbers
actuators
probe
filter
brightness
gas
galaxies
continuums
filters
probes
gases

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Kuin, N. P.M. ; Landsman, W. ; Page, M. J. ; Schady, P. ; Still, M. ; Breeveld, A. A. ; De Pasquale, M. ; Roming, P. W.A. ; Brown, P. J. ; Carter, M. ; James, C. ; Curran, P. A. ; Cucchiara, A. ; Gronwall, Caryl Ann ; Holland, S. T. ; Hoversten, E. A. ; Hunsberger, S. ; Kennedy, T. ; Koch, S. ; Lamoureux, H. ; Marshall, F. E. ; Oates, S. R. ; Parsons, A. ; Palmer, D. M. ; Smith, P. J. / GRB 081203A : Swift UVOT captures the earliest ultraviolet spectrum of a gamma-ray burst. In: Monthly Notices of the Royal Astronomical Society: Letters. 2009 ; Vol. 395, No. 1.
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title = "GRB 081203A: Swift UVOT captures the earliest ultraviolet spectrum of a gamma-ray burst",
abstract = "We present the earliest ultraviolet (UV) spectrum of a gamma-ray burst (GRB) as observed with the Swift Ultra-Violet/Optical Telescope (UVOT). The GRB 081203A spectrum was observed for 50 s with the UV-grism starting 251 s after the Swift-Burst-Alert-Telescope (BAT) trigger. During this time, the GRB was ≈13.4 mag (u filter) and was still rising to its peak optical brightness. In the UV-grism spectrum, we find a damped Lyα line, Lyβ and the Lyman continuum break at a redshift z = 2.05 ± 0.01. A model At to the Lyman absorption implies a gas column density of log NHI = 22.0 ± 0.1 cm-2, which is typical of GRB host galaxies with damped Lyα absorbers. This observation of GRB 081203A demonstrates that for brighter GRBs (υ ≈ 14 mag) with moderate redshift (0.5 < z < 3.5) the UVOT is able to provide redshifts, and probe for damped Lyα absorbers within 4-6 min from the time of the Swift-BAT trigger.",
author = "Kuin, {N. P.M.} and W. Landsman and Page, {M. J.} and P. Schady and M. Still and Breeveld, {A. A.} and {De Pasquale}, M. and Roming, {P. W.A.} and Brown, {P. J.} and M. Carter and C. James and Curran, {P. A.} and A. Cucchiara and Gronwall, {Caryl Ann} and Holland, {S. T.} and Hoversten, {E. A.} and S. Hunsberger and T. Kennedy and S. Koch and H. Lamoureux and Marshall, {F. E.} and Oates, {S. R.} and A. Parsons and Palmer, {D. M.} and Smith, {P. J.}",
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Kuin, NPM, Landsman, W, Page, MJ, Schady, P, Still, M, Breeveld, AA, De Pasquale, M, Roming, PWA, Brown, PJ, Carter, M, James, C, Curran, PA, Cucchiara, A, Gronwall, CA, Holland, ST, Hoversten, EA, Hunsberger, S, Kennedy, T, Koch, S, Lamoureux, H, Marshall, FE, Oates, SR, Parsons, A, Palmer, DM & Smith, PJ 2009, 'GRB 081203A: Swift UVOT captures the earliest ultraviolet spectrum of a gamma-ray burst', Monthly Notices of the Royal Astronomical Society: Letters, vol. 395, no. 1. https://doi.org/10.1111/j.1745-3933.2009.00632.x

GRB 081203A : Swift UVOT captures the earliest ultraviolet spectrum of a gamma-ray burst. / Kuin, N. P.M.; Landsman, W.; Page, M. J.; Schady, P.; Still, M.; Breeveld, A. A.; De Pasquale, M.; Roming, P. W.A.; Brown, P. J.; Carter, M.; James, C.; Curran, P. A.; Cucchiara, A.; Gronwall, Caryl Ann; Holland, S. T.; Hoversten, E. A.; Hunsberger, S.; Kennedy, T.; Koch, S.; Lamoureux, H.; Marshall, F. E.; Oates, S. R.; Parsons, A.; Palmer, D. M.; Smith, P. J.

In: Monthly Notices of the Royal Astronomical Society: Letters, Vol. 395, No. 1, 01.05.2009.

Research output: Contribution to journalLetter

TY - JOUR

T1 - GRB 081203A

T2 - Swift UVOT captures the earliest ultraviolet spectrum of a gamma-ray burst

AU - Kuin, N. P.M.

AU - Landsman, W.

AU - Page, M. J.

AU - Schady, P.

AU - Still, M.

AU - Breeveld, A. A.

AU - De Pasquale, M.

AU - Roming, P. W.A.

AU - Brown, P. J.

AU - Carter, M.

AU - James, C.

AU - Curran, P. A.

AU - Cucchiara, A.

AU - Gronwall, Caryl Ann

AU - Holland, S. T.

AU - Hoversten, E. A.

AU - Hunsberger, S.

AU - Kennedy, T.

AU - Koch, S.

AU - Lamoureux, H.

AU - Marshall, F. E.

AU - Oates, S. R.

AU - Parsons, A.

AU - Palmer, D. M.

AU - Smith, P. J.

PY - 2009/5/1

Y1 - 2009/5/1

N2 - We present the earliest ultraviolet (UV) spectrum of a gamma-ray burst (GRB) as observed with the Swift Ultra-Violet/Optical Telescope (UVOT). The GRB 081203A spectrum was observed for 50 s with the UV-grism starting 251 s after the Swift-Burst-Alert-Telescope (BAT) trigger. During this time, the GRB was ≈13.4 mag (u filter) and was still rising to its peak optical brightness. In the UV-grism spectrum, we find a damped Lyα line, Lyβ and the Lyman continuum break at a redshift z = 2.05 ± 0.01. A model At to the Lyman absorption implies a gas column density of log NHI = 22.0 ± 0.1 cm-2, which is typical of GRB host galaxies with damped Lyα absorbers. This observation of GRB 081203A demonstrates that for brighter GRBs (υ ≈ 14 mag) with moderate redshift (0.5 < z < 3.5) the UVOT is able to provide redshifts, and probe for damped Lyα absorbers within 4-6 min from the time of the Swift-BAT trigger.

AB - We present the earliest ultraviolet (UV) spectrum of a gamma-ray burst (GRB) as observed with the Swift Ultra-Violet/Optical Telescope (UVOT). The GRB 081203A spectrum was observed for 50 s with the UV-grism starting 251 s after the Swift-Burst-Alert-Telescope (BAT) trigger. During this time, the GRB was ≈13.4 mag (u filter) and was still rising to its peak optical brightness. In the UV-grism spectrum, we find a damped Lyα line, Lyβ and the Lyman continuum break at a redshift z = 2.05 ± 0.01. A model At to the Lyman absorption implies a gas column density of log NHI = 22.0 ± 0.1 cm-2, which is typical of GRB host galaxies with damped Lyα absorbers. This observation of GRB 081203A demonstrates that for brighter GRBs (υ ≈ 14 mag) with moderate redshift (0.5 < z < 3.5) the UVOT is able to provide redshifts, and probe for damped Lyα absorbers within 4-6 min from the time of the Swift-BAT trigger.

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U2 - 10.1111/j.1745-3933.2009.00632.x

DO - 10.1111/j.1745-3933.2009.00632.x

M3 - Letter

VL - 395

JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

SN - 1745-3925

IS - 1

ER -