Study of BL Lac VLBA Data at 8 and 15 GHz in a Super-resolution Mode

Details Study of BL Lac VLBA Data at 8 and 15 GHz in a Super-resolution Mode Study of BL Lac VLBA Data at 8 and 15 GHz in a Super-resolution Mode

Nov 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009apj...705..877t&link_type=abstract

The Astrophysical Journal, Volume 705, Issue 1, pp. 877-884 (2009).

Astronomy and Astrophysics

Astronomy

Bl Lacertae Objects: Individual: Bl Lac, Galaxies: Jets, Radio Continuum: Galaxies, Techniques: Interferometric

Scientific paper

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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