VLBI observation of giant radio galaxy J1313+696 at 2.3/8.4 GHz

Details VLBI observation of giant radio galaxy J1313+696 at 2.3/8.4 GHz VLBI observation of giant radio galaxy J1313+696 at 2.3/8.4 GHz

2010-05-19

arxiv.org/abs/1005.3357v1

Astrophys Space Sci (2009) 319:139-141

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

3 pages, 3 figures

Scientific paper

10.1007/s10509-008-9964-7

We report the result of VLBI observation of the giant radio galaxy J1313+696 (4C +69.15) at 2.3/8.4 GHz, only the core component of the giant radio galaxy was detected in the VLBI observation at the dual frequencies. The result shows a steep spectrum core with $\alpha=-0.82$ ($S \propto \nu^{\alpha}$) between 2.3 GHz and 8.4 GHz. The steep spectrum core may be a sign of renewed activity. Considering also the upper limit flux density of 2.0 mJy at 0.6 GHz from Konar et al. 2004 the core has a GHz-peaked spectrum, implying that the core is compact and absorbed. Further high resolution VLBI observations are needed to identify if the steep spectrum core is consisting of a core and steep spectrum jet.

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