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机构地区:[1]北京师范大学物理学系 [2]北京师范大学天文学系,北京100875
出 处:《北京师范大学学报(自然科学版)》2000年第4期510-511,共2页Journal of Beijing Normal University(Natural Science)
基 金:国家自然科学基金资助项目!(19873003)
摘 要:It is recognized that the interstellar methanol 107 GHz and OH 4 765 GHz masers toward Class Ⅱ sources are associated with each other and coexist toward ultracompact HⅡ regions. A new excitation mechanism is suggested. It can explain the formation of methanol 107 GHz masers. And it is argued that this mechanism is associated with astronomical conditions.It is recognized that the interstellar methanol 107 GHz and OH 4 765 GHz masers toward Class Ⅱ sources are associated with each other and coexist toward ultracompact HⅡ regions. A new excitation mechanism is suggested. It can explain the formation of methanol 107 GHz masers. And it is argued that this mechanism is associated with astronomical conditions.
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