Antarctic Long-Duration Balloon-Borne Observations of the Anisotropy of the Cosmic Microwave Background on Angular Scales of 0.2 to 4 Degrees

南极热气球在 0.2 至 4 度角尺度上对宇宙微波背景各向异性进行长期观测

• 批准号: 9729121
• 负责人: Andrew Lange
• 金额: $ 19.5万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-15 至 2001-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9729121&HistoricalAwards=false
• 关键词: Antarctic; Long; Duration; Balloon; Borne

Abstract 9729121 Lange The angular intensity distribution on the sky of the cosmic microwave background radiation carries a wealth of information about the early Universe since this radiation started on its journey to us just a few hundred thousand years after the Big Bang. The details of the distribution on angular scales from a few degrees to a few minutes can cleanly discriminate between competing models of the dark matter which makes up most of the gravitationally attracting mass of the Universe. This balloon borne microwave telescope - called BOOMERANG - will measure variations on a scale from 12minutes to 3.6 degrees. BOOMERANG has already been flown for a short flight in the US and will be flown on a long-duration balloon from McMurdo Antarctica in December of 1998 with an expectation of getting up to two weeks of continuous data. The funds necessary to build the balloon payload have been provided by NASA, NSF's Division of Astronomical Sciences and Italy. This award will provide some funds for the Antarctic flight and some of the data analysis. The balloon will be provided and launched by NASA while logistical support an payload recovery will be supplied by NSF. ***

摘要9729121兰格宇宙微波背景辐射的天空角强度分布携带了大量关于早期宇宙的信息，因为这种辐射在大爆炸后几十万年开始向我们传播。 从几度到几分钟的角尺度上的分布细节可以清楚地区分暗物质的竞争模型，暗物质构成了宇宙中大部分引力吸引质量。 这个气球携带的微波望远镜-称为BOOMERANG -将测量从12分钟到3.6度的变化。 BOOMERANG已经在美国进行了一次短途飞行，并将于1998年12月在南极洲的麦克默多用长时间气球飞行，预计将获得长达两周的连续数据。 建造气球有效载荷所需的资金由NASA、NSF天文科学部和意大利提供。 这笔奖金将为南极飞行和一些数据分析提供部分资金。 气球将由NASA提供和发射，而后勤支持和有效载荷回收将由NSF提供。 ***