2000A&A...364L..54A


Query : 2000A&A...364L..54A

2000A&A...364L..54A - Astronomy and Astrophysics, volume 364, L54-61 (2000/12-1)

VLT identification of the optical afterglow of the gamma-ray burst GRB 000131 at z=4.50.

ANDERSEN M.I., HJORTH J., PEDERSEN H., JENSEN B.L., HUNT L.K., GOROSABEL J., MOLLER P., FYNBO J., KIPPEN R.M., THOMSEN B., OLSEN L.F., CHRISTENSEN L., VESTERGAARD M., MASETTI N., PALAZZI E., HURLEY K., CLINE T., KAPER L. and JAUNSEN A.O.

Abstract (from CDS):

We report the discovery of the gamma-ray burst GRB 000131 and its optical afterglow. The optical identification was made with the VLT 84 hours after the burst following a BATSE detection and an Inter Planetary Network localization. GRB 000131 was a bright, long-duration GRB, with an apparent precursor signal 62 s prior to trigger. The afterglow was detected in ESO VLT, NTT, and DK1.54m follow-up observations. Broad-band and spectroscopic observations of the spectral energy distribution reveals a sharp break at optical wavelengths which is interpreted as a Lyα absorption edge at 6700Å. This places GRB 000131 at a redshift of 4.500±0.015. The inferred isotropic energy release in gamma rays alone was ∼1054erg (depending on the assumed cosmology). The rapid power-law decay of the afterglow (index α=2.25, similar to bursts with a prior break in the lightcurve), however, indicates collimated outflow, which relaxes the energy requirements by a factor of <200. The afterglow of GRB 000131 is the first to be identified with an 8-m class telescope.

Abstract Copyright:

Journal keyword(s): cosmology: observations - gamma rays: bursts - ISM: dust, extinction

Nomenclature: Fig.3, Table 3: [AHP2000] A (Nos A-D).

Simbad objects: 11

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Number of rows : 11
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 GRB 991216 gB 05 09 31.2983 +11 17 07.262           ~ 414 0
2 GRB 990705 gB 05 09 54.5 -72 07 53           ~ 218 1
3 GRB 000131 gB 06 13 31.08 -51 56 41.7     24.7     ~ 162 1
4 GRB 980329 gB 07 02 41 +38 50.7           ~ 267 1
5 GRB 980326 gB 08 36 34.3 -18 51 24           ~ 259 0
6 GRB 971214 gB 11 56 26.4 +65 12 01           ~ 437 1
7 GRB 990510 gB 13 38 07.64 -80 29 48.8           ~ 477 1
8 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 973 1
9 GRB 000301C gB 16 20 18.5 +29 26 35           ~ 347 0
10 GRB 991208 gB 16 33 53.51 +46 27 21.5           ~ 248 1
11 GRB 980519 gB 23 22 21.5 +77 15 43           ~ 197 0

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2022.06.29-03:37:03

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