Syllabus

The core theoretical lectures will be taught during the first week of the school and will cover two broad topics, "Instrumentation and Observations" and "Polarized Radiative Transfer" (~16 hours total). These lecture courses will be complemented by shorter lecture series (1-5 hours each, during the first and second weeks of the school) on adjacent topics:

Polarized LTE radiative transfer

Jose Carlos del Toro Iniesta (IAA, Spain) will be the lecturer for the theory of radiative transfer (~10 hours). Among other topics, we will see:

  • Absorption and dispersion
  • The radiative transfer equation (RTE): derivation, emission processes and spectral line formation
  • The RTE in the presence of a magnetic field (Zeeman effect, allowed transitions, elements of the propagation matrix, effective Zeeman triplet)
  • Solving the RTE (formal solution, symmetries, evolution operator, simple solutions, Milne-Eddington approximation)
  • Stokes spectrum diagnostics (tomography, contribution functions and response functions)

Instrumentation and observations

This part will be taught by Stacey Sueoka (NSO) and Kevin Reardon (NSO) and it will take ~6 hours.

  • Polarization of light (Jones & Mueller formalisms)
  • Modification of polarization by optical devices (polarizers & retarders)
  • Requirements for polarization measurements (noise, resolution...)
  • Approaches to polarimetry (modulation schemes, dual beam polarimetry...)
  • Spectral discriminators (spectrographs, filtergraphs, fiber optics...)
  • Modern polarimeters (examples)
  • Polarization calibration techniques

Non-LTE radiative transfer

This part will be taught by Han Uitenbroek (NSO) and it will take ~5 hours.

  • Introduction to non-LTE...

Additional lecture topics

There will also be shorter lecture courses (2-3 hours) on complementary topics:

  • Spectral line inversion algorithms by Rebecca Centeno (HAO, Boulder)
  • DKIST instrumentation by Gianna Cauzzi (NSO)
  • Magnetic field disambiguation techniques by K.D. Leka (NwRA, Boulder)
  • Scattering polarization and the Hanle effect by Ivan Milic (NSO, CU) and Andres Asensio Ramos (IAC, Spain)
  • Machine Learning techniques applied to inversion problems by Ivan Milic (NSO, CU)