J/A+A/545/A65 S5 0836+710 image at 1.6GHz (Perucho+, 2012)
S5 0836+710: An FRII jet disrupted by the growth of a helical instability?
Perucho M., Marti-Vidal I., Lobanov A.P., Hardee P.E.
<Astron. Astrophys. 545, A65 (2012)>
=2012A&A...545A..65P 2012A&A...545A..65P
ADC_Keywords: QSOs ; Radio sources
Keywords: galaxies: jets - hydrodynamics - instabilities -
quasars: individual: S5 0836+710
Abstract:
The remarkable stability of extragalactic jets is surprising, given
the reasonable possibility of the growth of instabilities. In
addition, much work in the literature has invoked this possibility to
explain observed jet structures and obtain information about the jet
from these structures. For example, it has been shown that the
observed helical structures in the jet in S5 0836+710 could be
associated with helical pressure waves generated by a Kelvin-Helmholtz
instability.
Our aim is to resolve the arc-second structure of the jet in the
quasar S5 0836+710 and confirm the lack of a hot-spot (reverse
jet-shock) found by present observing arrays, as this lack implies a
loss of jet collimation before interaction with the intergalactic
medium.
Description:
We use an observation performed in 2008 using EVN (European Very Long
Baseline Interferometry Network) and MERLIN (Multi-Element Radio
Linked Interferometer Network). The resultant combined image after
data reduction has provided a complete image of the object on
arc-second scales.
Objects:
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RA (2000) DE Designation(s)
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08 41 24.37 +70 53 42.2 S5 0836+710 = QSO B0836+7104
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 69 1 Information on the FITS image
0836+710.fits 2880 12747 EVN+MERLIN image of S5 0836+710 at 1.6GHz
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 9 F9.5 deg RAdeg Right Ascension of center (J2000)
10- 18 F9.5 deg DEdeg Declination of center (J2000)
20- 24 F5.3 arcsec/pix scale Scale of the image
26- 29 I4 pix Nx Number of pixels along X-axis
30 A1 --- --- [x]
31- 34 I4 pix Ny Number of pixels along Y-axis
36- 55 A20 --- Com Comments
57- 69 A13 --- FileName Name of FITS file
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Acknowledgements:
Ivan Marti-Vidal, ivan.marti-vidal(at)chalmers.se
(End) Patricia Vannier [CDS] 06-Sep-2012