| Maser Emission of Relativistic Electrons Spiralling and Drifting in Curved Magnetic Fields |
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| 作者姓名： | Jiong Liu Ye-Fei Yuan and Xiao-Long Deng Center for Astrophysics University of Science and Technology of China Hefei |
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| 作者单位： | Jiong Liu，Ye-Fei Yuan and Xiao-Long Deng Center for Astrophysics，University of Science and Technology of China，Hefei 230026 |
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| 基金项目： | 国家自然科学基金;国家自然科学基金;教育部新世纪优秀人才支持计划 |
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| 摘 要： | Synchro-curvature radiation describes the emission from a relativistic charged par- ticle which is moving and spiralling in a curved magnetic field. We investigate the maser emission for synchro-curvature radiation including drift of the guiding center of the radiating electron. It is shown that under some conditions the absorption coefficient can be negative, so maser can happen. These conditions are different from those needed for maser emission of curvature radiation including drift of the charged particles. We point out that our results, in- cluding the emissivity, can reduce to these of curvature radiation. Previously it was found that synchro-curvature radiation can not generate maser in vacuum, but we argue that synchro- curvature radiation including drift can generate maser even in vacuum. We discuss the possi- bilities of the potential applications of the synchro-curvature maser in modeling gamma ray bursts and pulsars.
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| 关 键 词： | masers—plasmas—radiation mechanisms: non-thermal |
Maser Emission of Relativistic Electrons Spiralling and Drifting in Curved Magnetic Fields |
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| Jiong Liu,Ye-Fei Yuan and Xiao-Long Deng Center for Astrophysics,University of Science and Technology of China,Hefei .Maser Emission of Relativistic Electrons Spiralling and Drifting in Curved Magnetic Fields[J].Chinese Journal of Astronomy and Astrophysics,2007,7(2):304-316. |
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| Authors: | Jiong Liu Ye-Fei Yuan Xiao-Long Deng |
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| Institution: | Center for Astrophysics, University of Science and Technology of China, Hefei 230026 |
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| Abstract: | Synchro-curvature radiation describes the emission from a relativistic charged par- ticle which is moving and spiralling in a curved magnetic field. We investigate the maser emission for synchro-curvature radiation including drift of the guiding center of the radiating electron. It is shown that under some conditions the absorption coefficient can be negative, so maser can happen. These conditions are different from those needed for maser emission of curvature radiation including drift of the charged particles. We point out that our results, in- cluding the emissivity, can reduce to these of curvature radiation. Previously it was found that synchro-curvature radiation can not generate maser in vacuum, but we argue that synchro- curvature radiation including drift can generate maser even in vacuum. We discuss the possi- bilities of the potential applications of the synchro-curvature maser in modeling gamma ray bursts and pulsars. |
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| Keywords: | masers - plasmas - radiation mechanisms: non-thermal |
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