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Deciphering Solar Magnetic Activity. I. On the Relationship Between the Sunspot Cycle and the Evolution of Small Magnetic Features

The Astrophysical journal, 2014-09, Vol.792 (1), p.1-19 [Peer Reviewed Journal]

ISSN: 0004-637X ;ISSN: 1538-4357 ;EISSN: 1538-4357 ;DOI: 10.1088/0004-637X/792/1/12

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Title:
Deciphering Solar Magnetic Activity. I. On the Relationship Between the Sunspot Cycle and the Evolution of Small Magnetic Features
Author: Mcintosh, Scott W. ; Wang, Xin ; Leamon, Robert J. ; Davey, Alisdair R. ; Howe, Rachel ; Krista, Larisza D. ; Malanushenko, Anna V. ; Markel, Robert S. ; Cirtain, Jonathan W. ; Gurman, Joseph B. ; Pesnell, William D. ; Thompson, Michael J.
Subjects: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ; Bands ; EVOLUTION ; INTERACTIONS ; MAGNETIC FIELDS ; Markers ; Polarity ; ROTATION ; Solar surface ; Space Sciences (General) ; SPACE-TIME MODEL ; SUN ; Sunspot cycle ; SUNSPOTS ; SURFACES
Is Part Of: The Astrophysical journal, 2014-09, Vol.792 (1), p.1-19
Description: Sunspots are a canonical marker of the Sun's internal magnetic field which flips polarity every ~22 yr. The principal variation of sunspots, an ~11 yr variation, modulates the amount of the magnetic field that pierces the solar surface and drives significant variations in our star's radiative, particulate, and eruptive output over that period. This paper presents observations from the Solar and Heliospheric Observatory and Solar Dynamics Observatory indicating that the 11 yr sunspot variation is intrinsically tied to the spatio-temporal overlap of the activity bands belonging to the 22 yr magnetic activity cycle. Using a systematic analysis of ubiquitous coronal brightpoints and the magnetic scale on which they appear to form, we show that the landmarks of sunspot cycle 23 can be explained by considering the evolution and interaction of the overlapping activity bands of the longer-scale variability.
Publisher: Goddard Space Flight Center: American Astronomical Society
Language: English
Identifier: ISSN: 0004-637X
ISSN: 1538-4357
EISSN: 1538-4357
DOI: 10.1088/0004-637X/792/1/12
Source: NASA Technical Reports Server
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Deciphering Solar Magnetic Activity. I. On the Relationship Between the Sunspot Cycle and the Evolution of Small Magnetic Features

ISSN: 0004-637X ;ISSN: 1538-4357 ;EISSN: 1538-4357 ;DOI: 10.1088/0004-637X/792/1/12

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