CELEBI: The CRAFT Effortless Localisation and Enhanced Burst Inspection pipeline

Astron. Comput. Pub Date : 2023-01-31 DOI:10.2139/ssrn.4347158

D. R. Scott, H. Cho, C. K. Day, A. Deller, M. Głowacki, K. Gourdji, K. Bannister, A. Bera, S. Bhandari, C. W. James, R. I. F. S. Research, C. University, C. F. A. HarvardSmithsonian, D. Physics, M. University, Centre for Gravitational Astrophysics, Supercomputing, S. U. Technology, Csiro Space, Astronomy, Australia Telescope National Facility, Astron, N. F. F. R. Astronomy, J. Eric, A. G. I. F. Astronomy, U. Amsterdam

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引用次数: 2

Abstract

Fast radio bursts (FRBs) are being detected with increasing regularity. However, their spontaneous and often once-off nature makes high-precision burst position and frequency-time structure measurements difficult without specialised real-time detection techniques and instrumentation. The Australian Square Kilometre Array Pathfinder (ASKAP) has been enabled by the Commensal Real-time ASKAP Fast Transients Collaboration (CRAFT) to detect FRBs in real-time and save raw antenna voltages containing FRB detections. We present the CRAFT Effortless Localisation and Enhanced Burst Inspection pipeline (CELEBI), an automated software pipeline that extends CRAFT's existing software to process ASKAP voltages in order to produce sub-arcsecond precision localisations and polarimetric data at time resolutions as fine as 3 ns of FRB events. We use Nextflow to link together Bash and Python code that performs software correlation, interferometric imaging, and beamforming, making use of common astronomical software packages.

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CELEBI: CRAFT - Effortless localization and Enhanced Burst Inspection pipeline

快速射电暴(frb)的探测频率越来越高。然而，由于它们是自发的，而且往往是一次性的，因此在没有专门的实时检测技术和仪器的情况下，很难进行高精度的爆发位置和频率时间结构测量。澳大利亚平方公里阵列探路器(ASKAP)已经被Commensal实时ASKAP快速瞬态协作(CRAFT)启用，可以实时检测快速射电暴，并保存包含快速射电暴检测的原始天线电压。我们介绍了CRAFT轻松定位和增强突发检测管道(CELEBI)，这是一个自动化的软件管道，扩展了CRAFT现有的软件来处理ASKAP电压，以便在精确到3ns的FRB事件时间分辨率下产生亚弧秒精度定位和极化数据。我们使用Nextflow将Bash和Python代码链接在一起，这些代码执行软件关联、干涉成像和波束形成，利用常见的天文软件包。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Astron. Comput.

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