The Astrophysical Journal, 754:155 (1pp), 2012 August 1 C 2012.
doi:10.1088/0004-637X/754/2/155
The American Astronomical Society. All rights reserved. Printed in the U.S.A.
ERRATUM: “QUASI-BIENNIAL MODULATION OF GALACTIC COSMIC RAYS” (2012, ApJ, 749, 167) 1
M. Laurenza1 , A. Vecchio2 , M. Storini1 , and V. Carbone2,3 INAF/IFSI-Roma, Via Fosso del Cavaliere 100, 00133 Roma, Italy;
[email protected] 2 Dipartimento di Fisica, Universit´ a della Calabria, 87036 Rende (CS), Italy 3 Liquid Crystal Laboratory (INFM), Ponte P. Bucci Cubo 33B, 87036 Rende (CS), Italy Received 2012 April 27; published 2012 July 18
Online-only material: color figure
In the published article, a typographical mistake appeared in the left panels of Figure 7. The time periods for the upper and lower panels should be 1968–1972 and 1988–1992 (instead of 1978–1982 and 1998–2002), respectively, i.e., during even-numbered solar cycles as stated in the text. The mistake has been corrected in the figure below. HMF−CR for 1968−1972
0
1
HH Rome Climax
HH Rome Climax
0.5
−0.5 −1
0 0 1 2 3for 4 1988−1992 5 6 7 8 9 10 11 12 HMF−CR
1
0.5 0
0.5
−0.5 −1
Statistical probability
Correlation coefficient
0.5
0 0 1 2 3 4 5 6 7 8 9 10 11 12
0 1 2 3 4 5 6 7 8 9 10 11 12
Lag (m)
Lag (m)
Figure 7. Pearson’s correlation coefficient (R) as a function of the time lag (expressed in months) between the QBOs of the HMF and CR data for different time periods (left panels) along with the corresponding statistical probability (right panels) to obtain correlation values greater than R due to chance. (A color version of this figure is available in the online journal.)
Moreover, the following sentence in Section 4 is incorrect: “Results are shown in Figure 9 for A < 0 (1970–1977 and 1991–1998) and A > 0 (1981–1988).” It should read as “Results are shown in Figure 9 for A > 0 (1970–1977 and 1991–1998) and A < 0 (1981–1988) periods.”
1
