A large set of high precision full-Stokes spectro-polarimetric observations of the He I D3 line in spicules has been recorded with the ZIMPOL polarimeter at the...
We present a theoretical investigation on the influence of the magnetic field on the linear and circular polarization of the Ba II D2 line at 4554 Å, through...
The Hanle Effect from Space for Measuring the Magnetic Fields of the Upper Solar Chromosphere
We present some theoretical predictions concerning the amplitudes and magnetic sensitivities of the linear polarization signals produced by scattering processes...
This paper addresses the problem of scattering line polarization and the Hanle effect in one-dimensional (1D), two-dimensional (2D) and three-dimensional (3D)...
The Hanle Effect in Atomic and Molecular Lines: A New Look at the Sun's Hidden Magnetism
This paper reviews some of the most recent advances in the application of the Hanle effect to solar physics, and how these developments are allowing us to...
The Hanle Effect in the Lyα Lines of H I and He II for Measuring the Magnetic Fields of the Solar Transition Region
The Ly α lines of H I and He II are two of the spectral lines of choice for FUV and EUV channels of narrowband imagers on board sounding rockets and space...
The hardware control system for WEAVE at the William Herschel Telescope
When an alt-azimuth telescope is tracking at a specific field, it is necessary to use a de-rotator system to compensate the Earth's rotation of the field of...
The hardware control system for WEAVE at the William Herschel telescope
This work describes the hardware control system of the Prime Focus Corrector (PFC) and the Spectrograph, two of the main parts of WEAVE, a multi-object fiber...
The He I D3 5876 A line as an activity and structural indicator in F-type Hyades stars
The first results of a study of F-type MS stars using the He I D3 absorption feature at 5876 A as an indicator of stellar activity and structure are presented...