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DOI | 10.1029/2018GL078808 |
The Lyman-alpha Sky Background as Observed by New Horizons | |
Gladstone, G. Randall1,2; Pryor, W. R.3; Stern, S. Alan4; Ennico, Kimberly5; Olkin, Catherine B.4; Spencer, John R.4; Weaver, Harold A.6; Young, Leslie A.4; Bagenal, Fran7; Cheng, Andrew F.6; Cunningham, Nathaniel J.8; Elliott, Heather A.1,2; Greathouse, Thomas K.1; Hinson, David P.9; Kammer, Joshua A.1; Linscott, Ivan R.9; Parker, Joel Wm.4; Retherford, Kurt D.1,2; Steffl, Andrew J.4; Strobel, Darrell F.10; Summers, Michael E.11; Throop, Henry12; Versteeg, Maarten H.1; Davis, Michael W.1 | |
2018-08-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:16页码:8022-8028 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Recent observations of interplanetary medium atomic hydrogen Lyman-alpha emission in the outer solar system, made with the Alice ultraviolet spectrograph on New Horizons, are presented. The observations include regularly spaced great circle scans of the sky and pointed observations near the downstream and upstream flow directions of interstellar H atoms. The New Horizons Alice data agree very well with the much earlier Voyager UVS results, after these are reduced by a factor of 2.4 in brightness, in accordance with recent reanalyses. In particular, the falloff of interplanetary medium Lyman-alpha brightness in the upstream-looking direction as a function of spacecraft distance from the Sun is well matched by an expected 1/r dependence, but with an added constant brightness of similar to 40 Rayleighs. This additional brightness is a possible signature of the hydrogen wall at the heliopause or of a more distant background. Ongoing observations are planned at a cadence of roughly twice per year. |
英文关键词 | ultraviolet Lyman alpha interplanetary medium |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445612500016 |
WOS关键词 | GALILEO ULTRAVIOLET SPECTROMETER ; NEARBY INTERSTELLAR-MEDIUM ; MULTIPLE-SCATTERING ; HYDROGEN ; RADIATION ; WIND ; GAS ; HELIOSPHERE ; PLUTO ; VENUS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27143 |
专题 | 气候变化 |
作者单位 | 1.Southwest Res Inst, San Antonio, TX 78238 USA; 2.Univ Texas San Antonio, Dept Phys & Astron, San Antonio, TX 78249 USA; 3.Cent Arizona Coll, Div Sci, Coolidge, AZ USA; 4.Southwest Res Inst, Boulder, CO USA; 5.NASA, Ames Res Ctr, Div Space Sci, Moffett Field, CA 94035 USA; 6.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA; 7.Univ Colorado, Atmospher & Space Phys Lab, Campus Box 392, Boulder, CO 80309 USA; 8.Nebraska Wesleyan Univ, Dept Phys, Lincoln, NE USA; 9.Stanford Univ, Stanford, CA 94305 USA; 10.Johns Hopkins Univ, Dept Earth & Planetary Sci, Baltimore, MD 21218 USA; 11.George Mason Univ, Dept Phys & Astron, Fairfax, VA 22030 USA; 12.Planetary Sci Inst, Tucson, AZ USA |
推荐引用方式 GB/T 7714 | Gladstone, G. Randall,Pryor, W. R.,Stern, S. Alan,et al. The Lyman-alpha Sky Background as Observed by New Horizons[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(16):8022-8028. |
APA | Gladstone, G. Randall.,Pryor, W. R..,Stern, S. Alan.,Ennico, Kimberly.,Olkin, Catherine B..,...&Davis, Michael W..(2018).The Lyman-alpha Sky Background as Observed by New Horizons.GEOPHYSICAL RESEARCH LETTERS,45(16),8022-8028. |
MLA | Gladstone, G. Randall,et al."The Lyman-alpha Sky Background as Observed by New Horizons".GEOPHYSICAL RESEARCH LETTERS 45.16(2018):8022-8028. |
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