6533b86dfe1ef96bd12c9bda

RESEARCH PRODUCT

Temperature and density structure of hot and cool loops derived from the analysis of TRACE data

P. TestaG. PeresF. RealeSalvatore Orlando

subject

Settore FIS/05 - Astronomia E AstrofisicaHydrostatic modelTRACEAerospace EngineeringLoops filamentationHydrostatic models; Loops filamentation; TRACE; Aerospace Engineering

description

We address the plasma structuring both across and along the magnetic field in two sets of solar coronal loops, observed with TRACE in the 17lÅ and 195Å passbands. We derive, after proper background removal, the density stratification and the thermal structure of the plasma in the fibrils forming the loops with two techniques: a) filter ratio diagnostic (195 Å/171 Å) and b) modeling intensity profiles along the fibrils with hydrostatic models. We find evidence of a hot fibril (T ∼ 5·106 K), with temperature and density stratification well-described with a typical non-isothermal hydrostatic loop model, and evidence of rather cold fibrils (T ∼ 2 · 105 K), isothermal and probably in dynamic conditions.

https://ui.adsabs.harvard.edu/#abs/2002ESASP.505..203T