50 MU as resolution VLBI images of AGN's at lambda 3 mm

Details 50 MU as resolution VLBI images of AGN's at lambda 3 mm 50 MU as resolution VLBI images of AGN's at lambda 3 mm

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26as..131..451r&link_type=abstract

Astronomy and Astrophysics Supplement, v.131, p.451-467

Astronomy and Astrophysics

Astrophysics

25

Galaxies: Jets, Radio Continuum: Galaxies, Galaxies: Active, Galaxies: Nuclei

Scientific paper

We present 15 images from the global mm-VLBI sessions in 1990 April at 100 GHz and 1993 April at 86 GHz. These observations probe the central engines of the 16 observed AGN's with up to 50 mu as resolution. Among other sources previously observed with lambda 3 mm VLBI we present the first lambda 3 mm maps of 0735+178, 0748+126, 1055+018, 2145+067, and CTA 102, in total we have been able to image 13 out of the 16 observed sources. 6 out of the 13 imaged sources observed exhibit curvature and rapid structural changes, although the low dynamic range in two thirds of the maps limits the detection of weak features. Most of the sources have unresolved cores even at this high resolution. There is substantial evidence that the observed sources can be grouped into two general groups: A misaligned population with parsec scale jets in the form of low pitch helices and an aligned population with straight jets with small changes in PA due to intrinsic bends.

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