Concerning the Existence of a ``Turbulent'' Magnetic Field in the Quiet Sun

Manso Sainz, Rafael; Landi Degl'Innocenti, Egidio; Trujillo Bueno, Javier
Bibliographical reference

The Astrophysical Journal, Volume 614, Issue 1, pp. L89-L91.

Advertised on:
10
2004
Number of authors
3
IAC number of authors
2
Citations
43
Refereed citations
32
Description
We report on the a5F-y5Fo multiplet of Ti I and its interest for the study of ``turbulent'' magnetic fields in the quiet solar photosphere. In particular, we argue that the sizable scattering polarization signal of the 4536 Å line (whose lower and upper levels have Landé factors equal to zero), relative to the rest of the lines in the multiplet, gives direct evidence for the existence of a ubiquitous, unresolved magnetic field. We cannot determine precisely the strength of the magnetic field, but its very existence is evidenced by the differential Hanle effect technique that this Ti I multiplet provides.