Summary
Magnetic fields are ubiquitous in our Universe. The question of their origin and subsequent evolution is a challenge for modern
cosmology. Recent bounds on magnetic fields from blazar observations, together with the requirement for initial “seed” field for dynamo and compression amplification mechanisms motivate the study of possible primordial origins of magnetic fields. This project combines expertise in early universe physics with an expertise in astrophysics, magnetohydrodynamics and advanced numerical tools to study the production of magnetic fields in models of axion inflation coupled to the Standard Model of particle physics - so-called axion-SU(2) inflation. The results of this project will trace the origin of magnetic fields from the early to the present-day universe and confront the axion-SU(2) magnetogenesis by cross-correlating cosmic microwave background and blazar observations. To achieve this I will go beyond the current understanding of the simpler so-called axion-U(1) magnetogenesis models widely studied until now, and study the viability of chiral magnetic field production in the axion-SU(2) case. Furthermore, I will develop new numerical tools to determine how the presence of feedback mechanisms affect magnetogenesis. I will also compute the spectrum of gravitational waves generated by axion-SU(2) models in the radiation-dominated era of the early universe, and compare it to other known sources of gravitational waves such as cosmic strings to understand potential differences in the observational predictions. My experience in early universe physics together with the present world-leading expertise in magnetohydrodynamics at Nordita make it an ideal place for a two-way transfer of knowledge essential for the implementation of this project. This project aims to bridge astrophysics and early universe physics, and to develop cutting-age numerical tools that may also be applicable in quantum physics and condensed matter physics.
cosmology. Recent bounds on magnetic fields from blazar observations, together with the requirement for initial “seed” field for dynamo and compression amplification mechanisms motivate the study of possible primordial origins of magnetic fields. This project combines expertise in early universe physics with an expertise in astrophysics, magnetohydrodynamics and advanced numerical tools to study the production of magnetic fields in models of axion inflation coupled to the Standard Model of particle physics - so-called axion-SU(2) inflation. The results of this project will trace the origin of magnetic fields from the early to the present-day universe and confront the axion-SU(2) magnetogenesis by cross-correlating cosmic microwave background and blazar observations. To achieve this I will go beyond the current understanding of the simpler so-called axion-U(1) magnetogenesis models widely studied until now, and study the viability of chiral magnetic field production in the axion-SU(2) case. Furthermore, I will develop new numerical tools to determine how the presence of feedback mechanisms affect magnetogenesis. I will also compute the spectrum of gravitational waves generated by axion-SU(2) models in the radiation-dominated era of the early universe, and compare it to other known sources of gravitational waves such as cosmic strings to understand potential differences in the observational predictions. My experience in early universe physics together with the present world-leading expertise in magnetohydrodynamics at Nordita make it an ideal place for a two-way transfer of knowledge essential for the implementation of this project. This project aims to bridge astrophysics and early universe physics, and to develop cutting-age numerical tools that may also be applicable in quantum physics and condensed matter physics.
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More information & hyperlinks
| Web resources: | https://cordis.europa.eu/project/id/101106874 |
| Start date: | 01-10-2023 |
| End date: | 30-09-2025 |
| Total budget - Public funding: | - 222 727,00 Euro |
Cordis data
Original description
Magnetic fields are ubiquitous in our Universe. The question of their origin and subsequent evolution is a challenge for moderncosmology. Recent bounds on magnetic fields from blazar observations, together with the requirement for initial “seed” field for dynamo and compression amplification mechanisms motivate the study of possible primordial origins of magnetic fields. This project combines expertise in early universe physics with an expertise in astrophysics, magnetohydrodynamics and advanced numerical tools to study the production of magnetic fields in models of axion inflation coupled to the Standard Model of particle physics - so-called axion-SU(2) inflation. The results of this project will trace the origin of magnetic fields from the early to the present-day universe and confront the axion-SU(2) magnetogenesis by cross-correlating cosmic microwave background and blazar observations. To achieve this I will go beyond the current understanding of the simpler so-called axion-U(1) magnetogenesis models widely studied until now, and study the viability of chiral magnetic field production in the axion-SU(2) case. Furthermore, I will develop new numerical tools to determine how the presence of feedback mechanisms affect magnetogenesis. I will also compute the spectrum of gravitational waves generated by axion-SU(2) models in the radiation-dominated era of the early universe, and compare it to other known sources of gravitational waves such as cosmic strings to understand potential differences in the observational predictions. My experience in early universe physics together with the present world-leading expertise in magnetohydrodynamics at Nordita make it an ideal place for a two-way transfer of knowledge essential for the implementation of this project. This project aims to bridge astrophysics and early universe physics, and to develop cutting-age numerical tools that may also be applicable in quantum physics and condensed matter physics.
Status
SIGNEDCall topic
HORIZON-MSCA-2022-PF-01-01Update Date
31-07-2023
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