Magnetic Imbalance at Supergranular Scale: A Driving Mechanism for Coronal Hole Formation

被引:1
作者
Cantoresi, M. [1 ,2 ]
Berrilli, F. [1 ]
机构
[1] Univ Roma Tor Vergata, Dipartimento Fis, Via Ric Sci 1, I-00133 Rome, Italy
[2] Univ Roma Sapienza, Dipartimento Fis, Piazzale Aldo Moro 5, I-00185 Rome, Italy
关键词
Coronal holes; Corona; quiet; Magnetic fields; photosphere; SIGN-SINGULARITY ANALYSIS; SOLAR-WIND; FIELD; IDENTIFICATION; DYNAMICS; PATTERNS;
D O I
10.1007/s11207-024-02342-7
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Unraveling the intricate interplay between the solar photosphere's magnetic field and the dynamics of the upper solar atmosphere is paramount to understanding the organization of solar magnetic fields and their influence on space weather events. This study delves into the organization of photospheric magnetic fields particularly in the context of coronal holes (CHs), as they are believed to harbor the sources of fast solar wind. We employed the signed measure technique on synthetic images that depict various arrangements of magnetic fields, encompassing imbalances in the sign of the magnetic field (inward and outward) and spatial organization.This study provides compelling evidence that the cancellation functions of simulated regions with imbalanced magnetic fields along the boundaries of supergranular cells align with cancellation function trends of observed photospheric magnetic regions associated with CHs. Thus the analysis serves as a significant proof that CHs arise from the formation of imbalanced magnetic patterns on the edges of supergranular cells.
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页数:12
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共 46 条
  • [1] The emergence of magnetic flux and its role on the onset of solar dynamic events
    Archontis, V
    Syntelis, P.
    [J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 2019, 377 (2148):
  • [2] Interchange reconnection as the source of the fast solar wind within coronal holes
    Bale, S. D.
    Drake, J. F.
    McManus, M. D.
    Desai, M. I.
    Badman, S. T.
    Larson, D. E.
    Swisdak, M.
    Horbury, T. S.
    Raouafi, N. E.
    Phan, T.
    Velli, M.
    McComas, D. J.
    Cohen, C. M. S.
    Mitchell, D.
    Panasenco, O.
    Kasper, J. C.
    [J]. NATURE, 2023, 618 (7964) : 252 - +
  • [3] A Solar Source of Alfvenic Magnetic Field Switchbacks: In Situ Remnants of Magnetic Funnels on Supergranulation Scales
    Bale, S. D.
    Horbury, T. S.
    Velli, M.
    Desai, M. I.
    Halekas, J. S.
    McManus, M. D.
    Panasenco, O.
    Badman, S. T.
    Bowen, T. A.
    Chandran, B. D. G.
    Drake, J. F.
    Kasper, J. C.
    Laker, R.
    Mallet, A.
    Matteini, L.
    Phan, T. D.
    Raouafi, N. E.
    Squire, J.
    Woodham, L. D.
    Woolley, T.
    [J]. ASTROPHYSICAL JOURNAL, 2021, 923 (02)
  • [4] Structure properties of supergranulation and granulation
    Berrilli, F
    Del Moro, D
    Consolini, G
    Pietropaolo, E
    Duvall, TL
    Koshovichev, AG
    [J]. SOLAR PHYSICS, 2004, 221 (01) : 33 - 45
  • [5] Magnetic pattern at supergranulation scale: the void size distribution
    Berrilli, F.
    Scardigli, S.
    Del Moro, D.
    [J]. ASTRONOMY & ASTROPHYSICS, 2014, 568
  • [6] Multiscale Magnetic Underdense Regions on the Solar Surface: Granular and Mesogranular Scales
    Berrilli, F.
    Scardigli, S.
    Giordano, S.
    [J]. SOLAR PHYSICS, 2013, 282 (02) : 379 - 387
  • [7] Berrilli F, 1999, ASTRON ASTROPHYS, V344, P965
  • [8] MULTIFRACTAL MODELS OF SMALL-SCALE SOLAR MAGNETIC-FIELDS
    CADAVID, AC
    LAWRENCE, JK
    RUZMAIKIN, AA
    KAYLENGKNIGHT, A
    [J]. ASTROPHYSICAL JOURNAL, 1994, 429 (01) : 391 - 399
  • [9] Organization scale of photospheric magnetic imbalance in coronal holes
    Cantoresi, Matteo
    Berrilli, Francesco
    Lepreti, Fabio
    [J]. RENDICONTI LINCEI-SCIENZE FISICHE E NATURALI, 2023, 34 (04) : 1045 - 1053
  • [10] Sign singularity of the magnetic helicity from in situ solar wind observations
    Carbone, V
    Bruno, R
    [J]. ASTROPHYSICAL JOURNAL, 1997, 488 (01) : 482 - 487