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Estimation of Reconnection Flux Using Post-Eruption Arcades and Its Relevance to Magnetic Clouds at 1 AU

Gopalswamy, N. ; Yashiro, S. ; Akiyama, S. ; Xie, H.

Solar physics, 2017-04, Vol.o 292 (4), p.1, Article 65 [Periódico revisado por pares]

Goddard Space Flight Center: Springer

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  • Título:
    Estimation of Reconnection Flux Using Post-Eruption Arcades and Its Relevance to Magnetic Clouds at 1 AU
  • Autor: Gopalswamy, N. ; Yashiro, S. ; Akiyama, S. ; Xie, H.
  • Assuntos: Astrophysics and Astroparticles ; Atmospheric Sciences ; Earth-affecting Solar Transients ; Physics ; Physics and Astronomy ; Solar Physics ; Space Exploration and Astronautics ; Space Sciences (including Extraterrestrial Physics
  • É parte de: Solar physics, 2017-04, Vol.o 292 (4), p.1, Article 65
  • Notas: GSFC
    GSFC-E-DAA-TN45734
    Goddard Space Flight Center
  • Descrição: We report on a new method to compute the flare reconnection (RC) flux from post-eruption arcades (PEAs) and the underlying photospheric magnetic fields. In previous works, the RC flux has been computed using the cumulative flare ribbon area. Here we obtain the RC flux as the flux in half of the area underlying the PEA in EUV imaged after the flare maximum. We apply this method to a set of 21 eruptions that originated near the solar disk center in Solar Cycle 23. We find that the RC flux from the arcade method ((Phi)rA) has excellent agreement with the flux from the flare-ribbon method ((Phi)rR) according to (Phi)rA = 1.24((Phi)rR)(sup 0.99). We also find (Phi)rA to be correlated with the poloidal flux ((Phi)P) of the associated magnetic cloud at 1 AU: (Phi)P = 1.20((Phi)rA)(sup 0.85). This relation is nearly identical to that obtained by Qiu et al. (Astrophys. J. 659, 758, 2007) using a set of only 9 eruptions. Our result supports the idea that flare reconnection results in the formation of the flux rope and PEA as a common process.
  • Editor: Goddard Space Flight Center: Springer
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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