3cm Observations of the Extended NW radio Jet in Pictor A

Details 3cm Observations of the Extended NW radio Jet in Pictor A 3cm Observations of the Extended NW radio Jet in Pictor A

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...184.1104s&link_type=abstract

American Astronomical Society, 184th AAS Meeting, #11.04; Bulletin of the American Astronomical Society, Vol. 26, p.874

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We present high--resolution, 3cm radio synthesis images of Pictor A constructed from four 12--hour sets of observations with the ATCA (Australia Telescope Compact Array). We find that the kiloparsec--scale radio jet located between the nucleus and the NW radio--optical hotspot, which lies more than 100kpc from the central galaxy, has an unresolved width ( ~ 1 \arcsec or 500 h(-1) pc). This jet is not completely straight, but changes direction between RA 5h20m35s and 5h20m40s. The SE and NW hotspots are not aligned with the nucleus. The eastern segment of the unresolved jet points towards the nucleus while the western segment, if extended to the east, intersects the SE hotspot. Near the central host galaxy, the 3cm continuum structure seems to be closely related to loops of ionized, HII gas (on a 2 to 4kpc scale).

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