SIMBAD references

2000MNRAS.319.1109G - Mon. Not. R. Astron. Soc., 319, 1109-1124 (2000/December-3)

Analysis of λ=6cm VLBI polarization observations of a complete sample of northern BL Lacertae objects.


Abstract (from CDS):

The results of very long baseline interferometry (VLBI) total intensity (I) and linear polarization (P) observations at {formmu1} are presented for 10 radio bright BL Lacertae objects. These images complete first-epoch polarization observations for the 1-Jy sample of northern BL Lacertae objects defined by Kühr & Schmidt. Estimates of superluminal speeds are presented for several sources, bringing the total number of sources in the sample for which such estimates are available to 16. Second-epoch observations currently being reduced should yield speed estimates for VLBI features in essentially all the sources in the sample. The jet magnetic fields of these BL Lacertae objects are usually transverse to the local jet direction, but a sizeable minority (about 30per cent) have VLBI jet components with longitudinal magnetic fields. This may suggest that the conditions in the VLBI jets of BL Lacertae objects are favourable for the formation of relativistic shocks; alternatively, it may be that the toroidal component of the intrinsic jet magnetic field is characteristically dominant in these sources.

Abstract Copyright: 2000, Royal Astronomical Society

Journal keyword(s): polarization - BL Lacertae objects: general - radio continuum: galaxies

Nomenclature: Table 3: Gabuzda HHMM+DDd Core N=8, Gabuzda 0003-066 KN (Nos K4-K5) added, Gabuzda 0814+425 KN (Nos K1-K5), Gabuzda 0820+225 KNN (Nos K1-K11), Gabuzda 0823+033 KN (Nos K1-K3), Gabuzda 1334-127 KN (Nos K1-K3), Gabuzda 1732+389 KN (Nos K1-K3), Gabuzda 2131-021 KN (Nos K1-K5), Gabuzda 2155-152 KN (Nos K, K1)), Gabuzda 2150+173 KN (Nos K1-K5).

Status at CDS:  

Simbad objects: 91

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