Roberto Casini | High Altitude Observatory

Error Propagation from Integral Moments and Spectral Derivatives of Stokes Profiles to Magnetic Observables

Plot of the error σ(ΘB ) of Eq. (46) as a function of wavelength across a spectral line (dot symbols), for a 1000 G fieldinclined by ΘB = 60◦. For this model, we assumed a spectral resolving power R ≈ 120000 and SNR of 10000 (blue dots), 1000 (red dots), 500 (orange dots), and 200 (green dots) at line center.

Considerations for Calibration of Stokes Polarimeters

Calibration states generated by the optimized two-retarder scheme at four wavelengths spanning 587–1083 nm, shown as projections onto the Poincaré sphere — the standard geometric representation of polarization states.

Slab model of the Hanle effect for magnetic sensitive chromospheric lines

Comparison of Stokes Q/I (upper row) and Stokes U/I (bottom row) profiles computed using the full self-consistent calculation with HanleRT (solid black), modeling only the Zeeman effect (dotted blue), and calculated with the proposed methodology described in Sec. 2.2 (dashed red).

Optimal Polarization Modulation and Calibration Schemes

Calibration efficiency plots, DKIST

Near-Ultraviolet Spectropolarimetry as a tracer of Magnetic Markers of Flux Rope Formation

CMEx results

Polarization fringes in optical systems: a compendium

Wavelength dependence

Using the Hanle Effect in Mg II k to Quantify the Open Flux above the Solar Poles

Inversion of an average synthetic Mg II k spectrum

Image instabilities and polarization cross-talk

polarization cross-talk

Erratum: Analysis of Seeing-Induced Polarization Cross-Talk and Modulation Scheme Performance

Graph of polarimetric errors

A unifying polarization formalism for electric- and magnetic-multipole interactions

Hanle diagrams

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