J/A+A/474/793 INTEGRAL observations of GRB 070311 (Guidorzi+, 2007)
GRB 070311: a direct link between the prompt emission and the afterglow.
Guidorzi C., Vergani S.D., Sazonov S., Covino S., Malesani D., Molkov S.,
Palazzi E., Romano P., Campana S., Chincarini G., Fugazza D., Moretti A.,
Tagliaferri G., Llorente A., Gorosabel J., Antonelli L.A., Capalbi M.,
Cusumano G., D'Avanzo P., Mangano V., Masetti N., Meurs E., Mineo T.,
Molinari E., Morris D.C., Nicastro L., Page K.L., Perri M., Sbarufatti B.,
Stratta G., Sunyaev R., Troja E., Zerbi F.M.
<Astron. Astrophys., 474, 793-805 (2007)>
=2007A&A...474..793G 2007A&A...474..793G
ADC_Keywords: Gamma rays - X-ray sources
Keywords: gamma rays: bursts - X-rays: individuals: GRB 070311
Abstract:
We present prompt γ-ray, early NIR/optical, late optical and
X-ray observations of the peculiar GRB 070311 discovered by INTEGRAL,
in order to gain clues on the mechanisms responsible for the prompt
γ-ray pulse as well as for the early and late multi-band
afterglow of GRB 070311.
We fitted with empirical functions the gamma-ray and optical light
curves and scaled the result to the late time X-rays.
Description:
GRB 070311 triggered the INTEGRAL/IBAS in IBIS/ISGRI data on 2007
March 11 at 01:52:50 UT and it was localised at RA=05:50:09.86,
Dec=+03:22:29.3, with an error radius of 2.5' (Mereghetti et al.,
2007GCN..6189....1M 2007GCN..6189....1M). At the time of the burst, Swift/BAT was pointing
in almost the opposite direction and it would have been in the field
of view two minutes later. The corresponding flux at the position of
the burst, in a 300s image beginning 130s after the INTEGRAL trigger,
is negligible.
Objects:
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RA (2000) DE Designation(s)
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05 50 09.9 +03 22 29 GRB 070311 = GRB 070311
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 44 33 REM KHJz'R and CAFOS R photometry of GRB 070311
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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- 8 F8.1 s StartTime Start time (origin = GRB onset)
10- 17 F8.1 s EndTime End time (origin = GRB onset)
19- 23 I5 s ExpTime Exposure time
25 A1 --- l_mag Limit flag on mag
26- 30 F5.2 mag mag Observed magnitude in filter "Filt" (1)
32- 35 F4.2 mag e_mag ? rms uncertainty on mag (at the 68%
confidence level)
37- 41 A5 --- Inst [REM CAFOS] Instrument (2)
42 A1 --- --- [/]
43- 44 A2 --- Filt [HJKR z'] Filter
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Note (1): Values are not corrected for Galactic extinction.
Upper limits at 3σ.
Note (2): Instruments as follows:
REM = Rapid Eye Mount telescope, La Silla observatory
CAFOS = Calar Alto Faint Object Spectrograph, Calar Alto
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 30-Nov-2007