CHILES VERDES: The Transient Radio Sky at Incomparable Depth

CHILES VERDES：无与伦比深度的瞬态射电天空

• 批准号: 1412549
• 负责人: Laura Chomiuk
• 金额: $ 26.21万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-15 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1412549&HistoricalAwards=false
• 关键词: CHILES; VERDES; Transient; Radio; Sky

Most astronomical phenomena change slowly, over millions or billions of years, but the most violent events in the universe - like supernovae, star mergers, and black hole outbursts - can vary on timescales of just days. This program will explore rapid variations in the sky at radio wavelengths, searching for new classes of violent events and informing such long-standing questions as the origin of the elements and the production of near-light-speed jets. By capitalizing on the dramatically improved sensitivity of the upgraded Very Large Array in New Mexico and "piggy-backing" off an approved radio observation, which will stare at one place in the sky for 42 days, the PI and her collaborators will obtain the most sensitive survey ever for variable and transient radio sources. PI Chomiuk is actively engaged in undergraduate education and public outreach at Michigan State University. As director of the MSU Campus Observatory, she leads monthly public observing nights and special hands-on events for the broader Michigan community, highlighting dynamic celestial events like bright supernovae and novae. As part of this program, she will expand the Observatory's public programs. In addition, she will educate undergraduates in career paths and broaden their participation in community educating. She will work with undergraduates on authentic research experiences, founded on data from the campus observatory and national radio telescope facilities. The PI and her collaborators will conduct the most sensitive radio transient survey to date. They will use data from the CHILES program, the radio equivalent of the Hubble Deep Field. The JVLA will observe a single field away from the galactic plane for 1002 hours in total between 2013 and 2016 in order to measure neutral hydrogen in other galaxies. CHILES VERDES is an adjunct program to use the time-resolved continuum (0.9-1.8 GHz) data to search for radio transients. Some of the most violent events in the universe should produce radio transients: supernovae, gamma-ray bursts, mergers of compact objects, tidal disruption events, and more. With the sensitivity of the VLA, a 3-year timeline, a well characterized field, and contemporaneous observations at other wavelengths, they expect to increase the sample of radio transients by several orders of magnitude over the small handful previously observed.

数百万或数十亿年的大多数天文现象变化缓慢，但是宇宙中最暴力的事件（如超新星，星球合并和黑洞爆发）可能会在几天的时间尺度上变化。该计划将在无线电波长下探索天空中的快速变化，寻找新的暴力事件类别，并告知诸如元素的起源和生产近光速喷射的长期问题。通过利用新墨西哥州升级的非常大的阵列的敏感性以及批准的无线电观察的“背包”的敏感性，这将凝视着天空中的一个地方42天，PI和她的合作者将获得有史以来最敏感的调查，以获取有史以来可变和瞬态无线电的最敏感的调查。 Pi Chomiuk在密歇根州立大学积极从事大学教育和公共宣传。作为MSU校园天文台的导演，她每月为密歇根州社区的夜晚和特殊的动手活动领导，重点介绍了充满活力的天体活动，例如明亮的Supernovae和Novae。作为该计划的一部分，她将扩大天文台的公共计划。此外，她将在职业道路上教育本科生，并扩大他们参与社区教育的参与。她将与本科生合作，研究基于校园天文台和国家电台望远镜设施的数据。 PI和她的合作者将进行迄今为止最敏感的无线电瞬态调查。 他们将使用智利计划中的数据，这是哈勃深场的无线电。 JVLA将在2013年至2016年之间观察到一个距银河平面的一个田地1002小时，以便在其他星系中测量中性氢。 辣椒ver是一个辅助程序，用于使用时间分辨的连续体（0.9-1.8 GHz）数据来搜索无线电瞬变。 宇宙中一些最暴力的事件应该产生无线电瞬态：超新星，伽马射线爆发，紧凑物体的合并，潮汐破坏事件等。 随着VLA的敏感性，一个3年的时间表，一个表征良好的场以及其他波长的同时观察结果，他们期望在以前观察到的小少数几个数量级上增加无线电瞬变的样本。