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Solar Intranetwork Magnetic Elements: Evolution and Lifetime

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An Erratum to this article was published on 20 November 2010

Abstract

Based on Hinode SOT/NFI observations with greatly improved spatial and temporal resolution and polarization sensitivity, the lifestory of the intranetwork (IN) magnetic elements are explored in a solar quiet region. A total of 2282 IN elements are followed from their appearance to disappearance and their fluxes measured. By tracing individual IN elements their lifetimes are obtained, which fall in the range from 1 to 20 min. The average lifetime is 2.9±2.0 min. The observed lifetime distribution is well represented by an exponential function. Therefore, the e-fold characteristic lifetime is determined by a least-square fitting to the observations, which is 2.1±0.3 min. The lifetime of IN elements is correlated closely with their flux. The evolution of IN elements is described according to the forms of their birth and disappearance. Based on the lifetime and flux obtained from the new observations, it is estimated that the IN elements have the capacity of heating the corona with a power of 2.1×1028 erg s−1 for the whole Sun.

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Authors and Affiliations

  1. Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China

    G. P. Zhou, J. X. Wang & C. L. Jin

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  1. G. P. Zhou
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  2. J. X. Wang
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  3. C. L. Jin
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Correspondence to G. P. Zhou.

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An erratum to this article can be found at http://dx.doi.org/10.1007/s11207-010-9658-5

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Zhou, G.P., Wang, J.X. & Jin, C.L. Solar Intranetwork Magnetic Elements: Evolution and Lifetime. Sol Phys 267, 63–73 (2010). https://doi.org/10.1007/s11207-010-9641-1

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  • DOI: https://doi.org/10.1007/s11207-010-9641-1

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