A Fast Transient Backend to Detect FRBs with the Tianlai Dish Pathfinder Array

Abstract

The Tianlai Dish Pathfinder array is a radio interferometer array consisting of 16 six meter dish antennas. The original digital backend integration time is at the seconds level, designed for HI intensity mapping experiment. A new digital backend with millisecond response is added to enable it to search for fast radio burst (FRB) during its observations. The design and calibration of this backend, and the real time search pipeline for it are described in this paper. It is capable of forming 16 digital beams for each linear polarisation, covering an area of 19.6 square degrees. The search pipeline is capable of searching for, recording and classifying FRBs automatically in real time. In commissioning, we succeeded in capturing the signal pulses from the pulsars PSR B0329+54 and B2021+51.

16 pages, 14 figures, RAA accepted

References in corpus (8)

• A bright millisecond radio burst of extragalactic origin
• The direct localization of a fast radio burst and its host
• The Repeating Fast Radio Burst FRB 121102 as Seen on Milliarcsecond Angular Scales
• FRB 121102 is coincident with a star forming region in its host galaxy
• The Tianlai project: a 21cm cosmology experiment
• Forecasts on the Dark Energy and Primordial Non-Gaussianity Observations with the Tianlai Cylinder Array
• On the magnetospheric origin of Repeating Fast Radio Bursts
• The Design and Implementation of a ROACH2+GPU based Correlator on the Tianlai Dish Array