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篇目详细内容 |
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【篇名】 |
Photon diffusion in a relativistically expanding sphere |
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【刊名】 |
Frontiers of Physics |
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【刊名缩写】 |
Front. Phys |
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【ISSN】 |
2095-0462 |
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【EISSN】 |
2095-0470 |
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【DOI】 |
10.1007/s11467-013-0390-0 |
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【出版社】 |
Higher Education Press and Springer-Verlag Berlin
Heidelberg |
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【出版年】 |
2013 |
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【卷期】 |
8
卷5期 |
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【页码】 |
555-563
页,共
9
页 |
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【作者】 |
Li-;
Xin Li;
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【关键词】 |
special relativity; explosive processes; gamma-ray bursts; supernovae; neutron star mergers; radiative transfer; scattering; cosmology |
【摘要】 |
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A relativistically expanding sphere exists in many explosive astrophysical systems, including gammaray bursts, neutron star mergers, and some supernovae. In this paper we investigate the photon diffusion process in a relativistically expanding sphere, which is important for understanding the energetic and radiative characters of the above mentioned explosive systems. The following contents are discussed in the frame work of special relativity: random walks of photons by scattering with electrons, photospheres, photon diffusion, and the energy flux density emerging from the surface of the expanding sphere. Some of the results are also applicable to the Universe since the Universe is also a spherical expanding system. |
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