Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...338..743g&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 338, March 15, 1989, p. 743-751.
Astronomy and Astrophysics
Astrophysics
49
Bl Lacertae Objects, Linear Polarization, Very Long Base Interferometry, Absorption Spectra, Brightness Temperature, Flux Density, Optical Thickness, Very Large Array (Vla), Visible Spectrum
Scientific paper
Polarization-sensitive 6-cm observations of the BL Lac object 0735+178 have been made using a four-element VLB interferometer with a resolution of 9 x 2 marcsec. The total intensity and polarization structures are well represented by three unresolved components (a core and two jet components). The core was moderately polarized (m = about 4 percent); the outer knot was more strongly polarized (m = about 15 percent); and the inner knot in the jet was weakly polarized (m = 2 percent or less). The B field indicated by the polarization position angles of the components is roughly perpendicular to the jet at the position of the outer knot. Over a period of 24 h, the polarized flux density of the VLBI core fell by 40 percent.
Gabuzda Denise C.
Roberts David H.
Wardle John F. C.
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