J/ApJ/642/L99 R-band photometry of GRB 060206 (Wozniak+, 2006)
RAPTOR observations of delayed explosive activity in the high-redshift gamma-ray
burst GRB 060206.
Wozniak P.R., Vestrand W.T., Wren J.A., White R.R., Evans S.M.,
Casperson D.
<Astrophys. J., 642, L99-L102 (2006)>
=2006ApJ...642L..99W 2006ApJ...642L..99W
ADC_Keywords: Gamma rays ; Photometry
Keywords: cosmology: observations - gamma rays: bursts - shock waves
Abstract:
The Rapid Telescopes for Optical Response (RAPTOR) system at Los
Alamos National Laboratory observed GRB 060206 starting 48.1min after
gamma-ray emission triggered the Burst Alert Telescope on board the
Swift satellite. The afterglow light curve measured by RAPTOR shows a
spectacular rebrightening by ∼1mag about 1hr after the trigger and
peaks at R∼16.4mag. Shortly after the onset of the explosive
rebrightening, the optical transient doubled its flux on a timescale
of about 4min. The total R-band fluence received from GRB 060206
during this episode is 2.3x109ergs/cm2. In the rest frame of the
burst (z=4.045), this yields an isotropic equivalent energy release of
Eiso∼0.7x1050ergs in just a narrow UV band, λ∼130±22nm.
We discuss the implications of RAPTOR observations for untriggered
searches for fast optical transients and studies of GRB environments
at high redshift.
Description:
On 2006 February 6, 04:46:53 UT (trigger time, hereafter t=0), the
Burst Alert Telescope (BAT) instrument of the Swift satellite detected
GRB 060206 (trigger No. 180455).
Objects:
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RA (2000) DE Designation(s)
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13 31 47 +35 04.5 GRB 060206 = XRR 060206
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 16 100 RAPTOR photometry of GRB 060206
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 5 F5.1 min Time Time of exposure start (since BAT trigger) (1)
7- 11 F5.2 mag Rmag The R-band magnitude (2)
13- 16 F4.2 mag e_Rmag The 1 σ error in Rmag
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Note (1): Time since 2006 February 6, 04:46:53 UT.
Note (2): Our unfiltered magnitudes were transformed to R-band scale
(Section 3) and were not corrected for extinction (Galactic E(B-V)
reddening is only 0.018mag; Schlegel et al. 1998ApJ...500..525S 1998ApJ...500..525S).
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 14-May-2008