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Home All issues Volume 672 (April 2023) A&A, 672 (2023) A130 Full HTML
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Table 1.

VLBA observations of 3C 454.3 used in this work.

Epoch Date Frequency-bands (GHz) Project code
1 2005-05-19 C, X, U, K, Q BS157A
2 2005-07-14 C, X, U, K, Q BS157B
3 2005-09-01 C, X, U, K, Q BS157C
4 2005-12-04 (1) C, X, U, K, Q BS157D
5 2006-08-03 (2) C, X, U, K, Q BW086A
6 2006-10-02 (3) C, X, U, K, Q BW086B
7 2006-12-04 C, X, U, K, Q BW086C
8 2007-01-26 C, X, U, K, Q BW086D
9 2007-04-26 C, X, U, K, Q BW086E
10 2007-06-16 C, X, U, K, Q BW086F
11 2007-07-25 (4) C, X, U, K, Q BW086G
12 2007-09-13 (5) C, X, U, K, Q BW086H
13 2008-01-03 (6) C, X, U, K, Q BW086I
14 2008-12-07 C, X(*), U, K(**), Q BO033
15 2009-09-22 C, X, U, K, Q S2087BA
16 2009-10-22 C, X, U, K, Q S2087BB
17 2009-12-03 C, X, U, K, Q S2087BC
18 2010-01-18 (7) C, X, U, K, Q S2087BD
19 2010-02-21 C, X, U, K, Q S2087BE

Notes.

(1)

Missing antenna(s): Brewster.

(2)

Missing antenna(s): Mauna Kea.

(3)

Missing antenna(s): Brewster missing for half the observation, due to a focus-rotation mount failure.

(4)

Missing antenna(s): Kitt Peak.

(5)

Missing antenna(s): Hancock and St. Croix.

(6)

Missing antenna(s): Hancock and St. Croix; Brewster missing for half the observation, due to snow problems.

(7)

Missing antenna(s): Hancock.

(*)

X-band is split into lower (Xl: 7.9 GHz) and higher (Xh: 8.9 GHz).

(**)

K-band is split into lower (Kl: 21.8 GHz) and higher (Kh: 24 GHz).

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