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Polarized Radiation Diagnostics for Exploring the Magnetism of the Outer Solar Atmosphere

Objective

POLMAG aims at a true breakthrough in the development and application of polarized radiation diagnostic methods for exploring the magnetic fields of the chromosphere, transition region and corona of the Sun via the interpretation of the Stokes profiles produced by optically polarized atoms and the Hanle and Zeeman effects in ultraviolet (UV), visible and near-infrared spectral lines. To this end, POLMAG will combine and expand expertise on atomic physics, on the quantum theory of radiation, on high-precision spectropolarimetry, on advanced methods in numerical radiative transfer, and on the confrontation of spectropolarimetric observations with spectral synthesis in increasingly realistic three-dimensional (3D) numerical models of the solar atmosphere.
POLMAG targets the following very challenging issues:
- Which are the optimum spectral lines for probing the magnetism of the outer solar atmosphere ?
- How to compute efficiently the Stokes profiles taking into account partial frequency redistribution, J-state quantum interference and the Hanle and Zeeman effects ?
- How to determine the magnetic, thermal and dynamic structure of the outer solar atmosphere through confrontations with spectropolarimetric observations ?

POLMAG will go well beyond the current state of the art as follows:
- Applying and extending the quantum theory of light polarization
- Developing and applying efficient radiative transfer codes
- Modeling the Ly-alpha and Mg II h & k observations of our CLASP suborbital rocket experiments
- Developing novel coronal magnetometry methods by complementing for the first time the information provided by forbidden and permitted lines
- Developing the plasma diagnostic techniques needed for the scientific exploitation of spectropolarimetric observations with the new generation of solar telescopes and putting them at the disposal of the astrophysical community

POLMAG will open up a new diagnostic window in astrophysics.

Call for proposal

ERC-2016-ADG
See other projects for this call

Funding Scheme

ERC-ADG - Advanced Grant

Host institution

INSTITUTO DE ASTROFISICA DE CANARIAS
Address
Calle Via Lactea
38205 San Cristobal De La Laguna
Spain
Activity type
Research Organisations
EU contribution
€ 2 478 750

Beneficiaries (1)

INSTITUTO DE ASTROFISICA DE CANARIAS
Spain
EU contribution
€ 2 478 750
Address
Calle Via Lactea
38205 San Cristobal De La Laguna
Activity type
Research Organisations