Evento
Excitation and destruction of nuclei in hot astrophysical plasma around black holes
Colaboradores:
Blaum, Klaus; Christlieb, Norbert; Martinez Pinedo, Gabriel
Tipo del evento:
Simposio
Nombre del evento:
11th Symposium on Nuclei in the Cosmos
Fecha del evento:
19/07/2010
Institución Organizadora:
University of Heidelberg;
Max-Planck-Institut für Kernphysik;
Título de la revista:
Proceedings of Science
Editorial:
Sissa Medialab
ISSN:
1824-8039
Idioma:
Inglés
Clasificación temática:
Resumen
The importance of nuclear reactions in low-density astrophysical plasmas with ion temperaturesT >10^10 K has been recognized for thirty years. However, the lack of comprehensive data banks of relevant nuclear reactions and the limited computational power have not previously allowed detailed theoretical studies. Recent developments in these areas make it timely to conduct comprehensive studies of the nuclear properties of very hot plasmas formed around compact relativistic objects such as black holes and neutron stars. Such studies are of great interest in the context of scientific programs of future low-energy cosmic gamma-ray spectrometry. In this work, using the publicly available code TALYS, we have built a large nuclear network relevant for temperatures exceeding 10^10 K. We then study the evolution of hot accretion plasmas for such high temperatures due to the destruction of nuclei at inelastic collisions, calculate the resulting gamma-ray spectra due to the superposition of prompt excitation gamma-ray lines, and present the results on the abundances of D, T, 3He.
Palabras clave:
Nuclear reactions
,
Astrophysical plasmas
,
Black holes
Archivos asociados
Licencia
Identificadores
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Eventos(IAR)
Eventos de INST.ARG.DE RADIOASTRONOMIA (I)
Eventos de INST.ARG.DE RADIOASTRONOMIA (I)
Citación
Excitation and destruction of nuclei in hot astrophysical plasma around black holes; 11th Symposium on Nuclei in the Cosmos; Heidelberg; Alemania; 2010; 1-5
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