Table 2
Results of fittings of the KSO data to rotational velocity profile Eq. (2).
Row | Method | Cycle | Time period | Hemisphere | A | B | N vl |
|
|||||||
1 | int, DS | 20 | 1964.8–1976.3 | N+S | 14.45 ± 0.02 | −3.05 ± 0.27 | 5319 |
2 | int, DS | 21 | 1976.3–1986.7 | N+S | 14.50 ± 0.02 | −2.47 ± 0.20 | 7486 |
3 | int, DS | 22 | 1986.7–1996.4 | N+S | 14.44 ± 0.02 | −2.81 ± 0.17 | 8400 |
4 | int, DS | 23 | 1996.4–2008.9 | N+S | 14.50 ± 0.02 | −2.54 ± 0.17 | 8204 |
5 | aut, DS | 24 | 2008.9–2016.3 | N+S | 14.48 ± 0.04 | −2.61 ± 0.45 | 3701 |
6 | int (all), DS | 20–23 | 1964.8–2008.9 | N+S | 14.47 ± 0.01 | −2.66 ± 0.10 | 29 409 |
7 | int + aut (all), DS | 20–24 | 1964.8–2016.3 | N+S | 14.47 ± 0.01 | −2.66 ± 0.10 | 33 110 |
|
|||||||
8 | int, DS | 20 | 1964.8–1976.3 | N | 14.45 ± 0.03 | −3.17 ± 0.35 | 2845 |
9 | int, DS | 21 | 1976.3–1986.7 | N | 14.49 ± 0.03 | −2.26 ± 0.29 | 3675 |
10 | int, DS | 22 | 1986.7–1996.4 | N | 14.43 ± 0.03 | −3.13 ± 0.25 | 3882 |
11 | int, DS | 23 | 1996.4–2008.9 | N | 14.50 ± 0.03 | −2.79 ± 0.25 | 3838 |
12 | aut, DS | 24 | 2008.9–2016.3 | N | 14.47 ± 0.06 | −2.48 ± 0.68 | 1893 |
13 | int (all), DS | 20–23 | 1964.8–2008.9 | N | 14.47 ± 0.02 | −2.83 ± 0.14 | 14 240 |
14 | int + aut (all), DS | 20–24 | 1964.8–2016.3 | N | 14.47 ± 0.02 | −2.82 ± 0.14 | 16 133 |
|
|||||||
15 | int, DS | 20 | 1964.8–1976.3 | S | 14.44 ± 0.03 | −2.78 ± 0.45 | 2474 |
16 | int, DS | 21 | 1976.3–1986.7 | S | 14.52 ± 0.03 | −2.67 ± 0.28 | 3811 |
17 | int, DS | 22 | 1986.7–1996.4 | S | 14.44 ± 0.03 | −2.52 ± 0.24 | 4518 |
18 | int, DS | 23 | 1996.4–2008.9 | S | 14.49 ± 0.03 | −2.33 ± 0.24 | 4366 |
19 | aut, DS | 24 | 2008.9–2016.3 | S | 14.49 ± 0.06 | −2.74 ± 0.62 | 1808 |
20 | int (all), DS | 20–23 | 1964.8–2008.9 | S | 14.47 ± 0.02 | −2.50 ± 0.14 | 15 169 |
21 | int + aut (all), DS | 20–24 | 1964.8–2016.3 | S | 14.47 ± 0.01 | −2.51 ± 0.13 | 16 977 |
|
|||||||
22 | int, rLSQ | 20 | 1964.8–1976.3 | N+S | 14.45 ± 0.03 | −3.06 ± 0.33 | 1216 |
23 | int, rLSQ | 21 | 1976.3–1986.7 | N+S | 14.53 ± 0.03 | −2.66 ± 0.26 | 1717 |
24 | int, rLSQ | 22 | 1986.7–1996.4 | N+S | 14.50 ± 0.02 | −3.17 ± 0.20 | 1763 |
25 | int, rLSQ | 23 | 1996.4–2008.9 | N+S | 14.51 ± 0.03 | −2.79 ± 0.22 | 1757 |
26 | aut, rLSQ | 24 | 2008.9–2016.3 | N+S | 14.52 ± 0.05 | −2.60 ± 0.52 | 787 |
27 | int (all), rLSQ | 20–23 | 1964.8–2008.9 | N+S | 14.50 ± 0.01 | −2.89 ± 0.12 | 6453 |
28 | int + aut (all), rLSQ | 20–24 | 1964.8–2016.3 | N+S | 14.50 ± 0.01 | −2.87 ± 0.12 | 7240 |
|
|||||||
29 | int, rLSQ | 20 | 1964.8–1976.3 | N | 14.46 ± 0.04 | −3.26 ± 0.39 | 640 |
30 | int, rLSQ | 21 | 1976.3–1986.7 | N | 14.51 ± 0.04 | −2.35 ± 0.38 | 836 |
31 | int, rLSQ | 22 | 1986.7–1996.4 | N | 14.50 ± 0.03 | −3.50 ± 0.27 | 803 |
32 | int, rLSQ | 23 | 1996.4–2008.9 | N | 14.52 ± 0.04 | −2.89 ± 0.34 | 813 |
33 | aut, rLSQ | 24 | 2008.9–2016.3 | N | 14.41 ± 0.07 | −1.87 ± 0.87 | 405 |
34 | int (all), rLSQ | 20–23 | 1964.8–2008.9 | N | 14.50 ± 0.02 | −3.01 ± 0.17 | 3092 |
35 | int + aut (all), rLSQ | 20–24 | 1964.8–2016.3 | N | 14.49 ± 0.02 | −2.94 ± 0.17 | 3497 |
|
|||||||
36 | int, rLSQ | 20 | 1964.8–1976.3 | S | 14.43 ± 0.05 | −2.76 ± 0.57 | 576 |
37 | int, rLSQ | 21 | 1976.3–1986.7 | S | 14.54 ± 0.04 | −2.94 ± 0.36 | 881 |
38 | int, rLSQ | 22 | 1986.7–1996.4 | S | 14.49 ± 0.03 | −2.83 ± 0.29 | 960 |
39 | int, rLSQ | 23 | 1996.4–2008.9 | S | 14.50 ± 0.03 | −2.71 ± 0.30 | 944 |
40 | aut, rLSQ | 24 | 2008.9–2016.3 | S | 14.66 ± 0.07 | −3.59 ± 0.63 | 382 |
41 | int (all), rLSQ | 20–23 | 1964.8–2008.9 | S | 14.49 ± 0.02 | −2.77 ± 0.17 | 3361 |
42 | int + aut (all), rLSQ | 20–24 | 1964.8–2016.3 | S | 14.51 ± 0.02 | −2.81 ± 0.17 | 3743 |
Notes. Differential rotation parameters are calculated separately for solar cycles Nos. 20–24, for the part of the data set using the interactive procedure (covering solar cycles Nos. 20–23) – int (all), and for the whole data set using the interactive and automatic procedure together (covering solar cycles Nos. 20–24) – int+aut (all). All results are calculated separately via the DS and rLSQ methods covering the whole Sun (i.e., both hemispheres together) – N+S, the northern hemisphere – N, and the southern hemisphere – S. All calculations are exposed to ±58 deg CMD filter and 8–19 deg/day velocity filter. The sidereal parameters and their standard errors are expressed in deg/day. Nvl is the number of calculated rotation velocities.
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