Concerning the Existence of a ``Turbulent'' Magnetic Field in the Quiet Sun
Abstract
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.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- October 2004
- DOI:
- 10.1086/425176
- arXiv:
- arXiv:astro-ph/0408360
- Bibcode:
- 2004ApJ...614L..89M
- Keywords:
-
- Line: Formation;
- Polarization;
- Scattering;
- Sun: Atmosphere;
- Sun: Magnetic Fields;
- Astrophysics
- E-Print:
- to be published in ApJL