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Title:
Study of BL Lac VLBA Data at 8 and 15 GHz in a Super-resolution Mode
Authors:
Tateyama, Claudio E.
Publication:
The Astrophysical Journal, Volume 705, Issue 1, pp. 877-884 (2009). (ApJ Homepage)
Publication Date:
11/2009
Origin:
IOP
ApJ Keywords:
BL Lacertae objects: individual: BL Lac, galaxies: jets, radio continuum: galaxies, techniques: interferometric
DOI:
10.1088/0004-637X/705/1/877
Bibliographic Code:
2009ApJ...705..877T

Abstract

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.
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Physics
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