Response to "Comment on 'Resolving the 180A° Ambiguity in Solar Vector Magnetic Field Data: Evaluating the Effects of Noise, Spatial Resolution, and Method Assumptions'aEuroparts per thousandaEuroe

被引:9
作者
Leka, K. D. [1 ]
Barnes, Graham [1 ]
Gary, G. Allen [2 ]
Crouch, A. D. [1 ]
Liu, Y. [3 ]
机构
[1] NW Res Associates, Colorado Res Associates Div, Boulder, CO 80301 USA
[2] Univ Alabama, Ctr Space Plasma & Aeron Res, Huntsville, AL 35899 USA
[3] Stanford Univ, HEPL Annex, Stanford, CA 94305 USA
基金
美国国家航空航天局;
关键词
Instrumental effects; Magnetic fields; models; photosphere; Polarization; optical; MISSION; MODEL;
D O I
10.1007/s11207-011-9879-2
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We address points recently discussed in Georgoulis (2011, Solar Phys., doi: 10.1007/s11207-011-9819-1) in reference to Leka et al. (2009b, Solar Phys. 260, 83). Most importantly, we find that the results of Georgoulis (2011) support a conclusion of Leka et al. (2009b): that limited spatial resolution and the presence of unresolved magnetic structures can challenge ambiguity-resolution algorithms. Moreover, the findings of both Metcalf et al. (2006, Solar Phys. 237, 267) and Leka et al. (2009b) are confirmed in Georgoulis (2011): a method's performance can be diminished when the observed field fails to conform to that method's assumptions. The implication of boundaries in models of solar magnetic structures is discussed; we confirm that the distribution of the field components in the model used in Leka et al. (2009b) is closer to what is observed on the Sun than what is proposed in Georgoulis (2011). It is also shown that method does matter with regards to simulating limited spatial resolution and avoiding an inadvertent introduction of bias. Finally, the assignment of categories to data-analysis algorithms is revisited; we argue that assignments are only useful and elucidating when used appropriately.
引用
收藏
页码:441 / 450
页数:10
相关论文
共 19 条
[1]   MAGNETIC FIELDS AND STRUCTURE OF SOLAR CORONA .I. METHODS OF CALCULATING CORONAL FIELDS [J].
ALTSCHULER, MD ;
NEWKIRK, G .
SOLAR PHYSICS, 1969, 9 (01) :131-+
[2]  
ALY JJ, 1988, ASTRON ASTROPHYS, V203, P183
[3]   Resolving the Azimuthal Ambiguity in Vector Magnetogram Data with the Divergence-Free Condition: Application to Discrete Data [J].
Crouch, A. D. ;
Barnes, G. ;
Leka, K. D. .
SOLAR PHYSICS, 2009, 260 (02) :271-287
[4]   A MULTIDIMENSIONAL VERSION OF THE KOLMOGOROV-SMIRNOV TEST [J].
FASANO, G ;
FRANCESCHINI, A .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1987, 225 (01) :155-170
[5]   Comment on "Resolving the 180A° Ambiguity in Solar Vector Magnetic Field Data: Evaluating the Effects of Noise, Spatial Resolution, and Method Assumptions" [J].
Georgoulis, Manolis K. .
SOLAR PHYSICS, 2012, 276 (1-2) :423-440
[6]   A new technique for a routine azimuth disambiguation of solar vector magnetograms [J].
Georgoulis, MK .
ASTROPHYSICAL JOURNAL, 2005, 629 (01) :L69-L72
[7]   The Hinode (Solar-B) mission:: An overview [J].
Kosugi, T. ;
Matsuzaki, K. ;
Sakao, T. ;
Shimizu, T. ;
Sone, Y. ;
Tachikawa, S. ;
Hashimoto, T. ;
Minesugi, K. ;
Ohnishi, A. ;
Yamada, T. ;
Tsuneta, S. ;
Hara, H. ;
Ichimoto, K. ;
Suematsu, Y. ;
Shimojo, M. ;
Watanabe, T. ;
Shimada, S. ;
Davis, J. M. ;
Hill, L. D. ;
Owens, J. K. ;
Title, A. M. ;
Culhane, J. L. ;
Harra, L. K. ;
Doschek, G. A. ;
Golub, L. .
SOLAR PHYSICS, 2007, 243 (01) :3-17
[8]   Coronal Field Opens at Lower Height During the Solar Cycles 22 and 23 Minimum Periods: IMF Comparison Suggests the Source Surface Should Be Lowered [J].
Lee, C. O. ;
Luhmann, J. G. ;
Hoeksema, J. T. ;
Sun, X. ;
Arge, C. N. ;
de Pater, I. .
SOLAR PHYSICS, 2011, 269 (02) :367-388
[9]   Modeling and Interpreting the Effects of Spatial Resolution on Solar Magnetic Field Maps [J].
Leka, K. D. ;
Barnes, G. .
SOLAR PHYSICS, 2012, 277 (01) :89-118
[10]  
Leka KD, 2009, ASTR SOC P, V415, P365