Chang Jin1; Li Youping1; Su Yang1; Miroshnichenko L I2; Gan Weiqun1
Source Publicationchinesejournalofastronomyandastrophysics
AbstractWe have studied the influence of the density of the annihilation region on the positronium continuum.A relation between the ratio 3γ/2γ and the density is explicitly given,with which one can derive directly from the observed 3γ/2γthe density where the annihilation occurs.A unique solution may be found from the observed width of the 0.511 MeV line.We applied the method to three flares observed by GRS/SMM.It is shown that due to the measuring uncertainties in the 0.511 MeV line width,we cannot distinguish a chromospheric source from a coronal source,though both accurately localized.To improve the measuring accuracy of the 0.511 MeV line and the ratio 3γ/2γ will be an important step for a better understanding of the annihilation process in solar flares.
Document Type期刊论文
2.IZMIRAN,Troitsk,Moscow Region
First Author Affilication中国科学院紫金山天文台
Recommended Citation
GB/T 7714
Chang Jin,Li Youping,Su Yang,et al. onthepositroniumcontinuumand0511mevlineinsolarflares[J]. chinesejournalofastronomyandastrophysics,2004,4(4):357.
APA Chang Jin,Li Youping,Su Yang,Miroshnichenko L I,&Gan Weiqun.(2004).onthepositroniumcontinuumand0511mevlineinsolarflares.chinesejournalofastronomyandastrophysics,4(4),357.
MLA Chang Jin,et al."onthepositroniumcontinuumand0511mevlineinsolarflares".chinesejournalofastronomyandastrophysics 4.4(2004):357.
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