Project description
New observations could explain why the Sun’s atmosphere is hotter than its surface
The Sun's corona, the outermost part of our star’s atmosphere, is a unique plasma laboratory, providing key insights into fundamental universal processes such as magnetic reconnection and particle acceleration. However, the fundamental magnetic processes that operate in the corona are still poorly understood. In particular, it is still unknown why the corona is a million Kelvin hotter than the photosphere – the visible surface of the Sun. The EU-funded ORIGIN project will develop a new framework to explain why the Sun’s atmosphere is hotter than its surface. The researchers will investigate key magnetic processes in the cooler photosphere that regulate the overlying hotter corona. To achieve their goals, they will leverage multi-wavelength observations from the recently launched ESA-led Solar Orbiter mission along with radiation–magnetohydrodynamic simulations.
Objective
The outer atmosphere of the Sun, the corona, is a unique plasma laboratory. It provides key insights into fundamental universal processes such as magnetic reconnection and particle acceleration. Yet, the very existence of the corona in itself is not well understood. It is composed of million Kelvin hot plasma trapped by magnetic fields, and overlies the much cooler 6000 K photosphere, the visible surface of the Sun. All sun-like stars possess such magnetically dominated hotter coronae overlying cooler photospheres. How do magnetic fields regulate mass and energy transport from the cool photosphere to sustain the overlying hot corona? This is a long-standing problem in astrophysics, which lacks a comprehensive explanation, despite proposals of different coronal heating models over the past five decades. The progress is hampered due to the lack of a solid, observationally validated framework of how the corona is magnetically coupled to the photosphere. We propose a holistic strategy to tackle this challenging problem of developing a framework for coronal heating by probing the elusive photosphere-corona connection and comprehensively testing the importance of different magnetic processes in the heating of the outer solar atmosphere. Through this strategy, we will identify key magnetic processes in the cool photosphere that regulate the hot atmosphere. Project ORIGIN will achieve this timely goal by exploiting unique, multi-wavelength observations from the recently launched Solar Orbiter mission, in combination with realistic radiation magnetohydrodynamic (MHD) simulations, and thus gain ground-breaking new insights into the magnetic origins of the hot solar atmosphere.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
This project's classification has been human-validated.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
This project's classification has been human-validated.
Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
-
HORIZON.1.1 - European Research Council (ERC)
MAIN PROGRAMME
See all projects funded under this programme
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-ERC - HORIZON ERC Grants
See all projects funded under this funding scheme
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) ERC-2021-STG
See all projects funded under this callHost institution
Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
80539 MUNCHEN
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.