Relativistic particle content in the most massive colliding-wind binary in the Galaxy
The wind-collision region of the system HD 93129A was recently resolved. This system is the most massive known binary in our Galaxy. We aim to gain insight into the physics taking place in such a system, particularly in the acceleration process(es). We explored the broadband non-thermal emission for...
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| Autores principales: | , , , |
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| Formato: | Objeto de conferencia |
| Lenguaje: | Inglés |
| Publicado: |
2015
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/168087 |
| Aporte de: |
| Sumario: | The wind-collision region of the system HD 93129A was recently resolved. This system is the most massive known binary in our Galaxy. We aim to gain insight into the physics taking place in such a system, particularly in the acceleration process(es). We explored the broadband non-thermal emission for different injection spectra of relativistic particles accelerated in the wind-collision region. We developed a model that computes the evolution of the particle energy distribution taking into account different energy losses while the particles stream along the fluid lines in the shocked region. Such model was able to reproduce the available radio data. Also, for different scenarios we predicted the evolution of the cosmic-rays energy distribution and the radiative output in future epochs, when the stars come closer. With further observational data it will be possible to determine the injection spectrum and acceleration efficiency of relativistic particles in HD 93129A. |
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