Project description
Investigating heavy element formation in neutron star mergers
Neutron stars are dense remnants of supermassive stars that have exploded as supernovae. Their extreme density, strong gravitational fields and intense magnetic fields make them important natural laboratories for fundamental physics. The first observation of a merger of a binary neutron star pair in 2017 offered high-quality spectra of the decompressed neutron-rich matter ejected during the collision. The outflowing matter evolved into a fireball, a transient astronomical event called a kilonova. Kilonovae could advance our understanding of physics of extremely dense matter and the origin of heavy elements. Funded by the European Research Council, the HEAVYMETAL project will bring together experts from different fields related to kilonova research to determine the structures and overall geometries of the merger outflows, the element abundances and their stratification within the ejecta.
Objective
The incredible density, gravity, and electromagnetic field strengths of neutron stars (NS) make them laboratories for physics under extreme conditions. But probing these exotic objects is difficult. With the 2017 gravitational wave detection of a NS-NS merger, the landscape changed, and we can now get high-quality spectra of the decompressed neutron-rich matter emerging from the collision. This is a new transient astrophysical phenomenon called a 'kilonova'. Kilonovae are a potential treasure trove of information on some of the biggest open questions in physics: understanding the nuclear and astrophysical pathways that created half of all the heavy elements (Z > 30) in the universe, and the physics of very hot and extremely dense matter. For this reason, they are considered a scientific priority and kilonova science is the target of several large new and upgraded facilities. But kilonovae are challenging: the phenomenon is short-lived, requiring rapid follow-up with large telescopes, the outflow is heavy element-dominated making it extremely demanding to model, and the merger itself covers a huge dynamic range and involves complex nuclear physics. To interpret the spectra we require new atomic data, which does not yet exist for most of the heavy elements. To tackle these challenges, HEAVYMETAL assembles experts in astrophysical observations, hydrodynamical merger simulation, numerical radiative transfer, and laboratory heavy element spectroscopy and atomic structure calculation. With this team we will be able to determine the structures and overall geometries of the merger outflow, the elemental abundances, and their stratification within the ejecta. By the full exploitation of kilonovae we will trace the nucleosynthesis pathways in NS mergers, and provide important insights on heavy nuclei, neutrino interactions, and the nature of high-density matter, and we will chart the role of compact object mergers as the cosmic forge of the heaviest elements.
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 validated by the project's team.
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 validated by the project's team.
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.
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HORIZON.1.1 - European Research Council (ERC)
MAIN PROGRAMME
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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-SYG - HORIZON ERC Synergy Grants
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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-2022-SYG
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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.
1165 KOBENHAVN
Denmark
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.