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| DOI | 10.1126/science.272.5267.1459 |
| Far-infrared hydrogen lasers in the peculiar star MWC 349A | |
| Strelnitski V.; Haas M.R.; Smith H.A.; Erickson E.F.; Colgan S.W.J.; Hollenbach D.J. | |
| 发表日期 | 1996 |
| ISSN | 0036-8075 |
| 起始页码 | 1459 |
| 结束页码 | 1461 |
| 卷号 | 272期号:5267 |
| 英文摘要 | Far-infrared hydrogen recombination lines H15α (169.4 micrometers), H12α (88.8 micrometers), and H10α (52.5 micrometers) were detected in the peculiar luminous star MWC 349A from the Kuiper Airborne Observatory. Here it is shown that at least H15α is strongly amplified, with the probable amplification factor being greater than or about equal to 103 and a brightness temperature that is greater than or about equal to 107 kelvin. The other two lines also show signs of amplification, although to a lesser degree. Beyond H10α the amplification apparently vanishes. The newly detected amplified lines fall into the laser wavelength domain. These lasers, as well as the previously detected hydrogen masers, may originate in the photoionized circumstellar disk of MWC 349A and constrain the disk's physics and structure. |
| 英文关键词 | hydrogen; article; astronomy; laser; microclimate; Astronomy; Extraterrestrial Environment; Hydrogen; Lasers |
| 语种 | 英语 |
| 来源期刊 | Science
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/245646 |
| 作者单位 | Laboratory for Astrophysics, National Air and Space Museum, Smithsonian Institution, Washington, DC 20560, United States; NASA Ames Research Center, Moffett Field, CA 94035-1000, United States; Search Extraterrestrial Intell. I., 2035 Landings Drive, Mountain View, CA 94043, United States |
| 推荐引用方式 GB/T 7714 | Strelnitski V.,Haas M.R.,Smith H.A.,et al. Far-infrared hydrogen lasers in the peculiar star MWC 349A[J],1996,272(5267). |
| APA | Strelnitski V.,Haas M.R.,Smith H.A.,Erickson E.F.,Colgan S.W.J.,&Hollenbach D.J..(1996).Far-infrared hydrogen lasers in the peculiar star MWC 349A.Science,272(5267). |
| MLA | Strelnitski V.,et al."Far-infrared hydrogen lasers in the peculiar star MWC 349A".Science 272.5267(1996). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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