Cosmo Plasmas · Cosmological simulations of radio bright plasmas
„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“
- Период
- 2015-09-01 → 2018-08-31
- Финансиране от ЕС
- 244 269 €
- Участници
- 2
- Схема
- MSCA-IF-GF
Линиите свързват координатора с партньорите.
Накратко на български
Сблъсъците между галактически клъстери създават магнитни полета и ускорени частици, които генерират огромни радиоизточници в Космоса. Нови компютърни симулации помагат да се разбере микрофизиката на тези процеси и да се предвидят бъдещи наблюдения.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
Cosmological simulations of radio bright plasmas
Merging galaxy clusters are among the most energetic events in the Universe. Their interaction generates shocks and turbulence in the ionised cluster medium, driving the amplification of magnetic fields and the acceleration of relativistic particles. This leads to the formation of large radio sources in clusters, whose origin is sparking a lively theoretical debate in the community. The ongoing leap in radio instrumentation, led by the European LOFAR observatory and by the JVLA, is revolutionizing the field by unveiling an increasingly complex picture. However we still lack numerical simulations to match the capabilities of these instruments. This roots in the complexity of modelling MHD, magnetic field dynamos, turbulence and cosmic-rays posing challenging demands to simulators. In this project, we aim to meet these challenges building a novel numerical platform that is based on the WOMBAT code. We worked in collaboration with experts of particle acceleration and Eulerian-MHD at the University of Minnesota and Ulsan National Institute of Science and Technology, and with the experts of high performance computing at Cray Inc. We developed a high-performance high-order MHD version of WOMBAT that shows unprecedented scalability and strongly increases the effective resolution and fidelity with respect to other existing numerical codes. The new platform is capable to overcome the limitations of the available MHD cosmological codes and algorithms thus allowing us to model the magnetic fields in galaxy clusters with unprecedented detail and fidelity. Large (PB-scale) simulations with our code will shortly provide the first steps to the eagerly awaited predictions for the next generation of cluster observations, revealing also an unprecedented view on the micro-physics in hot weakly-collisional plasmas.
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
Merging galaxy clusters are among the most energetic events in the Universe. Their interaction generates shocks and turbulence in the ionised cluster medium, driving the amplification of magnetic fields and the acceleration of relativistic particles. This leads to the formation of large diffuse radio sources in some clusters. The next generation of radio telescopes, including the European LOFAR observatory, will revolutionize the field, unveiling a complex picture of these non-thermal processes in clusters. However we still lack numerical simulations to match the capabilities of these instruments. This roots in the complexity of models for MHD-turbulence and cosmic-rays poses challenging demands to simulators. Only recent advances in implementations at the outgoing host and by the applicant make these simulations now feasible.Hence this project aims to simulate non-thermal radio sources in galaxy clusters with unprecedented detail. The applicant will run the first Eulerian cosmological MHD simulation that resolves the MHD dynamo in clusters including a self-consistent treatment of cosmic-rays in the intra-cluster-medium.During the outgoing-phase, he will interact with leading experts in the simulation of cosmic ray acceleration and magnetic field amplification at the University of Minnesota. He will be trained in the optimization of grid methods for MHD simulations and algorithms at Cray Inc, a leading vendor of super-computers.Upon return, the applicant will work with leading theorists and observers at the host to fully exploit his simulations. The comparison with LOFAR data and complementary observations will allow a leap forward in the understanding of the complex mechannisms opeating in the cluster medium.The project will establish the applicant as a leading numerical researcher in non-thermal cluster physics and a key figure in the interpretation of radio data. Moreover, the results will directly benefit the European radio astronomical community.
Оригинален текст от CORDIS (на английски).
Участници
- ISTITUTO NAZIONALE DI ASTROFISICA · ROMAКоординаторИталия
- REGENTS OF UNIVERSITY OF MINNESOTA · Minneapolis MnСъединени щати
Връзки
Данни: CORDIS, © Европейски съюз