High precision position measurements of the cores in 3C66A and ...
High precision position measurements of the cores in 3C66A and ...
High precision position measurements of the cores in 3C66A and ...
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Comb<strong>in</strong>ed core-shift <strong>of</strong> two sources<br />
2.3 GHz<br />
• e.g. at epoch 2004.80<br />
measured core-shift<br />
between 2.3 & 8.4 GHz<br />
on 3C66B:<br />
R.A. : = 0.703 mas<br />
DEC: = 0.988 mas<br />
8.4 GHz<br />
22 GHz<br />
<strong>3C66A</strong><br />
For 3C 66B, P.A.≈55°<br />
r 2.3-8.4 =0.858 mas<br />
For 3C 66A, P.A. ≈180°<br />
r 2.3-8.4 =0.496 mas<br />
(cf. 0.22 mas <strong>in</strong> 2001)
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