MeerKAT的宽视场波束形成观测

IF 1.5 Q3 ASTRONOMY & ASTROPHYSICS

Journal of Astronomical Instrumentation Pub Date : 2021-10-01 DOI:10.1142/S2251171721500136

Weiwei Chen, E. Barr, R. Karuppusamy, Michael Kramer, B. Stappers

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引用次数: 1

摘要

通过提高对脉冲星和快速射电暴的调查效率，无线电干涉仪的大规模波束形成有可能彻底改变脉冲星和快速射电暴的科学研究。我们描述了一种用于MeerKAT射电望远镜的宽视场波束形成器，并概述了优化设计此类调查的策略。介绍了这些技术的软件实现Mosaic，并介绍了Mosaic在MeerKAT望远镜中的应用。我们展示了通过观测球状星团同时跟踪几颗脉冲星的波束形成器的初步结果，并展示了这种观测的源定位能力。

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Wide field Beamformed Observation with MeerKAT

Large-scale beamforming with radio interferometers has the potential to revolutionize the science done with pulsars and fast radio bursts by improving the survey eﬃciency for these sources. We describe a wide-ﬁeld beamformer for the MeerKAT radio telescope and outline strategies to optimally design such surveys. A software implementation of these techniques, Mosaic is introduced and its application in the MeerKAT telescope is presented. We show initial results using the beamformer by observing a globular cluster to track several pulsars simultaneously and demonstrate the source localization capability of this observation.

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来源期刊

Journal of Astronomical Instrumentation ASTRONOMY & ASTROPHYSICS-

CiteScore

2.30

自引率

7.70%

发文量

期刊介绍： The Journal of Astronomical Instrumentation (JAI) publishes papers describing instruments and components being proposed, developed, under construction and in use. JAI also publishes papers that describe facility operations, lessons learned in design, construction, and operation, algorithms and their implementations, and techniques, including calibration, that are fundamental elements of instrumentation. The journal focuses on astronomical instrumentation topics in all wavebands (Radio to Gamma-Ray) and includes the disciplines of Heliophysics, Space Weather, Lunar and Planetary Science, Exoplanet Exploration, and Astroparticle Observation (cosmic rays, cosmic neutrinos, etc.). Concepts, designs, components, algorithms, integrated systems, operations, data archiving techniques and lessons learned applicable but not limited to the following platforms are pertinent to this journal. Example topics are listed below each platform, and it is recognized that many of these topics are relevant to multiple platforms. Relevant platforms include: Ground-based observatories[...] Stratospheric aircraft[...] Balloons and suborbital rockets[...] Space-based observatories and systems[...] Landers and rovers, and other planetary-based instrument concepts[...]