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BEYOND-STANDARD-DISK

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Beyond the Standard Accretion Disk Model Theoretical Foundations and Observatio...

Beyond the Standard Accretion Disk Model Theoretical Foundations and Observational Implications Most celestial bodies, ranging from planets to stars to black holes, gain mass during their lives by gravitationally attracting matter from their environments. This accretion process takes place via a disk-like structure around th... ver más

28/02/2014

UCPH

319K€

Presupuesto del proyecto: 319K€

Líder del proyecto

KOBENHAVNS UNIVERSITET No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo FP7 notifico la concesión del proyecto el día 2014-02-28 No tenemos la información de la convocatoria

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1 Participantes

UCPH

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Líder del proyecto

KOBENHAVNS UNIVERSITET No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 319K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Most celestial bodies, ranging from planets to stars to black holes, gain mass during their lives by gravitationally attracting matter from their environments. This accretion process takes place via a disk-like structure around the gravitating object. Understanding the physical processes that determine the rate at which matter accretes and energy is radiated in these disks is vital for unraveling the formation, evolution, and fate of almost every type of object in the Universe. Despite the fact that magnetic fields have been known to play a fundamental role in accretion disks since the early 90’s, the majority of astrophysical questions that depend on the details of how disk accretion proceeds are still being addressed using the ’standard’ accretion disk model (developed in the early 70’s), where magnetic fields do not appear explicitly. This has produced a profound disconnect between observations, usually interpreted with the standard paradigm, and modern accretion disk theory and numerical simulations, where magnetic turbulence is crucial. The aim of my project is to develop what will become the new standard approach to accretion disks in astrophysics. The first part of the proposal addresses accretion disk physics and magnetized turbulence. I will build on my previous work with the goal of developing the theoretical framework that will incorporate magnetic fields into self-consistent disk models. The second part of the proposal concerns the dynamics of magnetic fields and related transport processes in the low-density regions of accretion disks, where the observed non-thermal radiation originates. By using a kinetic particle description of the plasma, I will be able to self-consistently calculate the non-thermal radiation spectra resulting from particle acceleration in the turbulent disk coronae. The proposed approach will allow us to address the most fundamental problems in modern astrophysics in a way that has no counterpart within the standard framework.

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