Imaging the Cosmic Web with the Dragonfly Telephoto Array
使用蜻蜓长焦阵列对宇宙网进行成像
基本信息
- 批准号:RTI-2018-00229
- 负责人:
- 金额:$ 6.16万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Research Tools and Instruments
- 财政年份:2017
- 资助国家:加拿大
- 起止时间:2017-01-01 至 2018-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Over the past 40 years the cutting edge of astronomical imaging has transitioned from photographic plates on ground based telescopes to CCD detectors on space telescopes. This has improved our ability to detect small and faint galaxies by a factor of about 600. Over this same period of time, there has been no improvement in our ability to detect large but faint (low surface brightness) structures in the Universe. This is because the limiting factor in this case is not photon statistics or image resolution, it is control of systematic errors, such as the scattering of light and sky variability. Working with a colleague at Yale, I recently developed a novel new telescope, the Dragonfly Telephoto Array, which has succeeded in breaking through this technical barrier and which is revealing the composition of the Universe at very faint surface brightness levels (Abraham & van Dokkum 2014). This is an area of astronomy that is almost totally unexplored, and in the last three years we have used this telescope (constructed from an array of high-end commercial telephoto lenses) to probe the Universe down to hitherto impossibly faint surface brightness levels. A number of remarkable discoveries have been made, most notably the existence of a new population of giant but faint galaxies that preferentially inhabit rich galaxy clusters. These "ultra-diffuse galaxies" are as big as the Milky Way but have only 1/100 - 1/1000 of its mass, and explaining their existence is a major puzzle that has turned into a highly active area of investigation by the community. But these early results from Dragonfly are only the tip of the iceberg. It is now clear that the low surface brightness Universe is a treasure trove of almost totally unexplored astrophysical phenomena, and the race is now on to study these. The most exciting known ultra-low surface brightness structure is weak photoluminescence from the "cosmic web", a predicted large scale network of dark matter filaments believed to connect galaxies to each other. Observing the cosmic web directly would be a landmark observation of the largest coherent structure in the sky, and it would let us map out the distribution of most of the mass in the local Universe directly. With this long-term goal in mid, in this proposal we request funding to add a prototype narrow-band imaging capability to the Dragonfly Telephoto Array. Our design fully exploits the unique strengths of Dragonfly, but it relies on untested ideas, such as filtering and beam switching at the entrance pupil. The proposed prototype will let us determine us if our design for an ultra-sensitive narrow-band imager works as well in the real world as it does on paper. If it does, mapping the cosmic web would be within reach of a fully-upgraded Dragonfly Telephoto Array.
在过去的40年里,天文成像的前沿已经从地面望远镜上的照相板过渡到空间望远镜上的CCD探测器。这将我们探测小而暗星系的能力提高了大约600倍。在同一时期,我们探测宇宙中大而暗(低表面亮度)结构的能力没有任何提高。这是因为在这种情况下,限制因素不是光子统计或图像分辨率,而是系统误差的控制,例如光的散射和天空变化。我最近与耶鲁大学的一位同事合作,开发了一种新型望远镜,蜻蜓远摄阵列,它成功地突破了这一技术障碍,并在非常微弱的表面亮度水平下揭示了宇宙的组成(Abraham & van Dokkum 2014)。这是一个几乎完全未被探索过的天文学领域,在过去的三年里,我们使用这台望远镜(由一系列高端商用长焦镜头组成)探测宇宙,直到迄今为止,它的表面亮度都是不可能的。许多值得注意的发现已经取得,最值得注意的是存在一种新的巨大但微弱的星系,它们优先栖息在丰富的星系团中。这些“超扩散星系”和银河系一样大,但质量只有银河系的1/100 - 1/1000,解释它们的存在是一个重大难题,已经成为科学界高度活跃的研究领域。但蜻蜓项目的这些早期结果只是冰山一角。现在很清楚,低表面亮度的宇宙是一个几乎完全未被探索的天体物理现象的宝库,现在人们正在研究这些现象。已知的最令人兴奋的超低表面亮度结构是来自“宇宙网”的弱光致发光,“宇宙网”是一个预测的暗物质细丝的大规模网络,被认为将星系彼此连接起来。直接观测宇宙网将是对天空中最大的相干结构的里程碑式观测,它将使我们能够直接绘制出局部宇宙中大部分质量的分布。为了实现这一长期目标,在本提案中,我们请求资金为蜻蜓远摄阵列增加一个窄带成像能力的原型。我们的设计充分利用了蜻蜓的独特优势,但它依赖于未经测试的想法,例如滤波和入口瞳孔的光束开关。提出的原型将让我们确定我们设计的超灵敏窄带成像仪在现实世界中的效果是否与在纸上的效果一样好。如果真的成功了,那么完全升级的蜻蜓远摄阵列就可以绘制宇宙网了。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
Abraham, Roberto其他文献
A Nascent Tidal Dwarf Galaxy Forming within the Northern H i Streamer of M82
M82 北部 H i 流光内形成的新生潮汐矮星系
- DOI:
10.3847/2041-8213/ac3ca6 - 发表时间:
2021 - 期刊:
- 影响因子:0
- 作者:
Pasha, Imad;Lokhorst, Deborah;van Dokkum, Pieter G.;Chen, Seery;Abraham, Roberto;Greco, Johnny;Danieli, Shany;Miller, Tim;Lippitt, Erin;Polzin, Ava - 通讯作者:
Polzin, Ava
Stellar masses of clumps in gas-rich, turbulent disc galaxies
富含气体的湍流盘星系中的恒星团块
- DOI:
10.1093/mnras/stac622 - 发表时间:
2022 - 期刊:
- 影响因子:4.8
- 作者:
Ambachew, Liyualem;Fisher, Deanne B;Glazebrook, Karl;Girard, Marianne;Obreschkow, Danail;Abraham, Roberto;Bolatto, Alberto;Lenkić, Laura;Damjanov, Ivana - 通讯作者:
Damjanov, Ivana
Abraham, Roberto的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('Abraham, Roberto', 18)}}的其他基金
Probing the Low Surface Brightness Universe with Dragonfly
用蜻蜓号探测低表面亮度宇宙
- 批准号:
RGPIN-2017-05989 - 财政年份:2021
- 资助金额:
$ 6.16万 - 项目类别:
Discovery Grants Program - Individual
Probing the Low Surface Brightness Universe with Dragonfly
用蜻蜓号探测低表面亮度宇宙
- 批准号:
RGPIN-2017-05989 - 财政年份:2020
- 资助金额:
$ 6.16万 - 项目类别:
Discovery Grants Program - Individual
Probing the Low Surface Brightness Universe with Dragonfly
用蜻蜓号探测低表面亮度宇宙
- 批准号:
DGDND-2017-00012 - 财政年份:2019
- 资助金额:
$ 6.16万 - 项目类别:
DND/NSERC Discovery Grant Supplement
Probing the Low Surface Brightness Universe with Dragonfly
用蜻蜓号探测低表面亮度宇宙
- 批准号:
RGPIN-2017-05989 - 财政年份:2019
- 资助金额:
$ 6.16万 - 项目类别:
Discovery Grants Program - Individual
Probing the Low Surface Brightness Universe with Dragonfly
用蜻蜓号探测低表面亮度宇宙
- 批准号:
DGDND-2017-00012 - 财政年份:2018
- 资助金额:
$ 6.16万 - 项目类别:
DND/NSERC Discovery Grant Supplement
Probing the Low Surface Brightness Universe with Dragonfly
用蜻蜓号探测低表面亮度宇宙
- 批准号:
RGPIN-2017-05989 - 财政年份:2018
- 资助金额:
$ 6.16万 - 项目类别:
Discovery Grants Program - Individual
Probing the Low Surface Brightness Universe with Dragonfly
用蜻蜓号探测低表面亮度宇宙
- 批准号:
DGDND-2017-00012 - 财政年份:2017
- 资助金额:
$ 6.16万 - 项目类别:
DND/NSERC Discovery Grant Supplement
Probing the Low Surface Brightness Universe with Dragonfly
用蜻蜓号探测低表面亮度宇宙
- 批准号:
RGPIN-2017-05989 - 财政年份:2017
- 资助金额:
$ 6.16万 - 项目类别:
Discovery Grants Program - Individual
Astronomical observations in northern Canada
加拿大北部的天文观测
- 批准号:
424159-2012 - 财政年份:2016
- 资助金额:
$ 6.16万 - 项目类别:
Discovery Grants Program - Northern Research Supplement
Astronomical observations in northern Canada
加拿大北部的天文观测
- 批准号:
424159-2012 - 财政年份:2015
- 资助金额:
$ 6.16万 - 项目类别:
Discovery Grants Program - Northern Research Supplement
相似国自然基金
利用COSMIC掩星资料研究电离层赤道不规则体统计特性
- 批准号:41874185
- 批准年份:2018
- 资助金额:63.0 万元
- 项目类别:面上项目
基于地基GNSS和COSMIC掩星观测资料的区域电离层模型精化方法
- 批准号:41761089
- 批准年份:2017
- 资助金额:38.0 万元
- 项目类别:地区科学基金项目
相似海外基金
Investigating the Galaxy-Cosmic Web Connection with Subaru PFS
使用 Subaru PFS 调查 Galaxy-Cosmic Web 连接
- 批准号:
24H00241 - 财政年份:2024
- 资助金额:
$ 6.16万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Collaborative Research: RUI: Tracing Galaxy Quenching in the Cosmic Web With Spatially-Resolved Star-Formation Maps
合作研究:RUI:用空间分辨的恒星形成图追踪宇宙网中的星系淬火
- 批准号:
2308127 - 财政年份:2023
- 资助金额:
$ 6.16万 - 项目类别:
Standard Grant
NSF-BSF: The Physics of Multiphase Gas Streams feeding Galaxies from the Cosmic Web
NSF-BSF:从宇宙网供给星系的多相气流的物理学
- 批准号:
2307280 - 财政年份:2023
- 资助金额:
$ 6.16万 - 项目类别:
Standard Grant
Co-evolution of cosmic web filaments and galaxies in the early universe
早期宇宙中宇宙网细丝和星系的共同演化
- 批准号:
22KK0231 - 财政年份:2023
- 资助金额:
$ 6.16万 - 项目类别:
Fund for the Promotion of Joint International Research (Fostering Joint International Research (A))
Collaborative Research: Tracing Galaxy Quenching in the Cosmic Web With Spatially-Resolved Star-Formation Maps
合作研究:利用空间分辨的恒星形成图追踪宇宙网中的星系淬灭
- 批准号:
2308126 - 财政年份:2023
- 资助金额:
$ 6.16万 - 项目类别:
Standard Grant
Testing cosmological theory with elongated structure in the Cosmic Web
在宇宙网中用细长结构测试宇宙学理论
- 批准号:
559296-2021 - 财政年份:2022
- 资助金额:
$ 6.16万 - 项目类别:
Postgraduate Scholarships - Doctoral
Theory and Analysis of Cosmic Web Observables
宇宙网可观测理论与分析
- 批准号:
RGPIN-2019-07306 - 财政年份:2022
- 资助金额:
$ 6.16万 - 项目类别:
Discovery Grants Program - Individual
Mapping the cosmic web with neutral hydrogen during the era of the Square Kilometre Array
在平方公里阵列时代用中性氢绘制宇宙网
- 批准号:
MR/V026437/1 - 财政年份:2022
- 资助金额:
$ 6.16万 - 项目类别:
Fellowship
Illuminating the cosmic web with Fast Radio Bursts
用快速射电爆发照亮宇宙网
- 批准号:
DP220102305 - 财政年份:2022
- 资助金额:
$ 6.16万 - 项目类别:
Discovery Projects
LEAPS-MPS: Unraveling the Galaxy-Cosmic Web Connection using Monte Carlo Physarum Machine
LEAPS-MPS:使用蒙特卡罗绒泡机揭开银河宇宙网络连接
- 批准号:
2137452 - 财政年份:2021
- 资助金额:
$ 6.16万 - 项目类别:
Continuing Grant