Study of BL Lac VLBA data at 8 and 15 GHz in a super-resolution mode

Tateyama C.E.

Study of BL Lac VLBA data at 8 and 15 GHz in a super-resolution mode

Tipo

Artigo

Data de publicação

2009

Periódico

Astrophysical Journal

Citações (Scopus)

7

Autores

Tateyama C.E.

Resumo

In this work, we show Very Long Baseline Array data at 8 GHz (RRFID) and 15 GHz (MOJAVE) of BL Lac from 1995 to 2007 by examining the structure in the maps given by the CLEAN-point components (represented by a restoring beam of 0.1 mas). The CLEAN-point maps show a well-ordered train of individual points in the inner core jet. The result shows a narrow elongated stationary component at about 1.5 mas from the core which was interpreted as superposition of trailing components. The inner core-jet structure shows ballistic motion and a precessing ejection nozzle period of 26 years. © 2009. The American Astronomical Society. All rights reserved.