Bright points in the inter-network quiet Sun

Details Bright points in the inter-network quiet Sun Bright points in the inter-network quiet Sun

2004-05-26

arxiv.org/abs/astro-ph/0405515v1

Astrophys.J. 609 (2004) L91-L94

Astronomy and Astrophysics

Astrophysics

To appear in ApJL. 4 pages, 4 figures

Scientific paper

10.1086/422752

High resolution G-band images of the interior of a supergranulation cell show ubiquitous Bright Points (some 0.3 BPs per Mm^2). They are located in intergranular lanes and often form chains of elongated blobs whose smallest dimension is at the resolution limit (135 km on the Sun). Most of them live for a few minutes, having peak intensities from 0.8 to 1.8 times the mean photospheric intensity. These BPs are probably tracing intense magnetic concentrations, whose existence has been inferred in spectro-polarimetric measurements. Our finding provides a new convenient tool for the study of the inter-network magnetism, so far restricted to the interpretation weak polarimetric signals.

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