J/MNRAS/431/L107 Outbursts of GX339-4 at 5.5 and 9.0GHz fluxes (Corbel+, 2013)
Formation of the compact jets in the black hole GX 339-4.
Corbel S., Aussel H., Broderick J.W., Chanial P., Coriat M., Maury A.J.,
Buxton M.M., Tomsick J.A., Tzioumis A.K., Markoff S., Rodriguez J.,
Bailyn C.D., Brocksopp C., Fender R.P., Petrucci P.O., Cadolle-Bel M.,
Calvelo D., Harvey-Smith L.
<Mon. Not. R. Astron. Soc., 431, L107-L111 (2013)>
=2013MNRAS.431L.107C 2013MNRAS.431L.107C
ADC_Keywords: Binaries, X-ray ; Radio sources
Keywords: accretion, accretion discs - black hole physics -
stars: individual: GX 339-4 - ISM: jets and outflows -
X-rays: binaries
Abstract:
Galactic black hole binaries produce powerful outflows which emit over
almost the entire electromagnetic spectrum. Here, we report the first
detection with the Herschel observatory of a variable far-infrared
source associated with the compact jets of the black hole transient GX
339-4 during the decay of its recent 2010-2011 outburst, after the
transition to the hard state. We also outline the results of very
sensitive radio observations conducted with the Australia Telescope
Compact Array, along with a series of near-infrared, optical (OIR) and
X-ray observations, allowing for the first time the re-ignition of the
compact jets to be observed over a wide range of wavelengths. The
compact jets first turn on at radio frequencies with an optically thin
spectrum that later evolves to an optically thick synchrotron
emission. An OIR reflare is observed about 10d after the onset of
radio and hard X-ray emission, likely reflecting the necessary time to
build up enough density, as well as to have acceleration (e.g. through
shocks) along an extended region in the jets. The Herschel
measurements are consistent with an extrapolation of the radio
inverted power-law spectrum, but they highlight a more complex radio
to OIR spectral energy distribution for the jets.
Description:
In order to probe the evolution of the SED from the compact jets, the
Herschel observations were included in a large campaign of
multiwavelength observations. All radio observations were performed
with the Australia Telescope Compact Array (ATCA) located in
Australia. TheATCAobservations were conducted at 5.5 and 9GHz (also
at 2.2GHz during the first Herschel run) with the upgraded and
sensitive Compact Array Broadband Backend.
Objects:
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RA (2000) DE Designation(s)
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17 02 49.36 -48 47 22.8 GX 339-4 = V* V821 Ara
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 59 17 Summary of the radio data used to illustrate the
formation of the compacts jets during the decay
of the 2010-2011 outburst of GX 339-4
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See also:
J/A+A/542/A56 : GX339-4 spectral analysis of 2010-11 outburst (Nandi+, 2012)
J/AJ/143/130 : GX339-4 VIJH light curves (Buxton+, 2012)
J/MNRAS/428/2500 : GX 339-4 radio/X-ray flux correlation (Corbel+, 2013)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 11 A11 "date" Date Calendar Date
13- 20 F8.2 d MJD Modified Julian date
22 A1 --- l_S5.5 Limit flag on S5.5 (3σ level)
23- 27 F5.3 mJy S5.5 Flux density at 5.5GHz
29- 32 F4.2 mJy e_S5.5 ? rms uncertainty on S5.5 (1σ level)
34 A1 --- l_S9.0 Limit flag on S9.0 (3σ level)
35- 39 F5.3 mJy S9.0 Flux density at 9.0GHz
41- 44 F4.2 mJy e_S9.0 ? rms uncertainty on S9.0 (1σ level)
46- 50 F5.2 --- alpha ? Radio spectral index α
[Fν∝να]
52- 55 F4.2 --- e_alpha ? rms uncertainty on alpha
57- 59 A3 --- Com Comment: C13 indicates data used for
radio/X-ray correlation in Corbel
et al. 2013 (J/MNRAS/428/250)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 19-May-2014