English

The Area Distribution of Solar Magnetic Bright Points

Solar and Stellar Astrophysics 2015-05-19 v1

Abstract

Magnetic Bright Points (MBPs) are among the smallest observable objects on the solar photosphere. A combination of G-band observations and numerical simulations is used to determine their area distribution. An automatic detection algorithm, employing 1-dimensional intensity profiling, is utilized to identify these structures in the observed and simulated datasets. Both distributions peak at an area of \approx45000 km2^2, with a sharp decrease towards smaller areas. The distributions conform with log-normal statistics, which suggests that flux fragmentation dominates over flux convergence. Radiative magneto-convection simulations indicate an independence in the MBP area distribution for differing magnetic flux densities. The most commonly occurring bright point size corresponds to the typical width of intergranular lanes.

Keywords

Cite

@article{arxiv.1009.2410,
  title  = {The Area Distribution of Solar Magnetic Bright Points},
  author = {P. J. Crockett and M. Mathioudakis and D. B. Jess and S. Shelyag and F. P. Keenan and D. J. Christian},
  journal= {arXiv preprint arXiv:1009.2410},
  year   = {2015}
}

Comments

Astrophysical Journal, accepted