Studying Fast Radio Bursts and Pulsars with CHIME

使用 CHIME 研究快速射电爆发和脉冲星

• 批准号: RGPIN-2022-04055
• 负责人: Kaspi, Victoria
• 金额: $ 5.46万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=762502
• 关键词: Studying; Fast; Radio; Bursts; Pulsars

I propose to continue to lead the revolutionary Canadian Hydrogen Intensity Mapping Experiment (CHIME) Fast Radio Burst (FRB) Project to study the mysterious phenomenon of FRBS - few-millisecond explosions of radio waves coming from unknown sources far outside our Milky Way galaxy. CHIME/FRB has now proven itself to be a world-leading facility, detecting hundreds of FRBs per year in real time and unveiling an entire population of repeating sources being followed up by astronomers world-wide. With now thousands of events detected and counting, we can begin to answer a variety of basic questions such as: Are repeating FRBs and apparent non-repeaters the same class of object? Are all repeaters periodic? Are there multi-wavelength counterparts to FRBs? Where are the "missing baryons" in the Universe located? Buoyed by the success of FRB detection with CHIME, we have been funded to extend CHIME/FRB's capabilities to include precision localizations on the sky by building three Outrigger telescopes - smaller versions of CHIME located at hundreds to thousand kilometre distances away from CHIME itself. These Outriggers will operate as a very long baseline interferometer with CHIME. These new Outrigger telescopes, presently under construction, will enable us to identify hundreds of FRB host galaxies, as well as the locations of the FRBs within them, in order to help understand the environments in which FRBs exist, as clues to their nature. These host galaxy identifications will also enable us to utilize FRBs as novel probes of the Large Scale Structure of the Universe.  We are also preparing to make CHIME a world-class radio pulsar discovery instrument that will allow the detection of extremely faint pulsars and highly intermittent sources, that could dominate the Galaxy's neutron star population, as well as better determine the electron density content of the outer Galaxy, which will aid in identifying nearby FRBs. Finally, we are laying the groundwork for the development of the next generation CHORD telescope, a massive CHIME follow-on, that will continue to maintain Canada as a leader in astrophysical science and technology.  CHORD will be a formidable FRB detector, enabling Canada to remain at the forefront of the field.

我提议继续领导革命性的加拿大氢强度测绘实验（CHIME）快速射电暴（FRB）项目，以研究FRB的神秘现象-来自银河系以外未知来源的无线电波的几毫秒爆炸。CHIME/FRB现在已经证明自己是世界领先的设施，每年在真实的时间内探测数百个FRB，并揭示了全世界天文学家正在跟踪的重复源。现在，随着数千个事件的检测和计数，我们可以开始回答各种基本问题，例如：重复的FRB和明显的非重复者是同一类对象吗？是否所有的中继器都是周期性的？FRB是否有多波长对应物？宇宙中“失踪的重子”在哪里？在CHIME成功探测FRB的鼓舞下，我们获得了资金，通过建造三个Outrigger望远镜来扩展CHIME/FRB的能力，包括天空中的精确定位-CHIME的较小版本位于距离CHIME数百至数千公里的地方。这些支腿将作为一个非常长的基线干涉仪与CHIME。这些新的外伸架望远镜，目前正在建设中，将使我们能够识别数百个FRB宿主星系，以及其中FRB的位置，以帮助了解FRB存在的环境，作为其性质的线索。这些宿主星系的识别还将使我们能够利用FRB作为宇宙大尺度结构的新型探测器。我们还准备使CHIME成为世界级的射电脉冲星发现仪器，它将允许探测极其微弱的脉冲星和高度间歇性的源，这可能会主导银河系的中子星星群，并更好地确定外银河系的电子密度含量，这将有助于识别附近的FRB。最后，我们正在为开发下一代CHORD望远镜奠定基础，这是CHIME的大型后续产品，将继续保持加拿大在天体物理科学和技术方面的领先地位。CHORD将是一个强大的FRB探测器，使加拿大能够保持在该领域的前沿。