Photometric properties of resolved and unresolved magnetic elements

Details Photometric properties of resolved and unresolved magnetic elements Photometric properties of resolved and unresolved magnetic elements

2008-12-09

arxiv.org/abs/0812.1727v1

Astronomy and Astrophysics

Astrophysics

12 pages

Scientific paper

10.1051/0004-6361:200810436

We investigate the photometric signature of magnetic flux tubes in the solar photosphere. We developed two dimensional, static numerical models of isolated and clustered magnetic flux tubes. We investigated the emergent intensity profiles at different lines-of-sight for various spatial resolutions and opacity models. We found that both geometric and photometric properties of bright magnetic features are determined not only by the physical properties of the tube and its surroundings, but also by the particularities of the observations, including the line/continuum formation height, the spatial resolution and the image analyses techniques applied. We show that some observational results presented in the literature can be interpreted by considering bright magnetic features to be clusters of smaller elements, rather than a monolithic flux tube.

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