ASTROFLOW: A Real-Time End-to-End Pipeline for Radio Single-Pulse Searches

Guanhong Lin; Dejia Zhou; Jianli Zhang; Jialang Ding; Fei Liu; Xiaoyun Ma; Yuan Liang; Ruan Duan; Liaoyuan Liu; Xuanyu Wang; Xiaohui Yan; Yingrou Zhan; Yuting Chu; Jing Qiao; Wei Wang; Jie Zhang; Zerui Wang; Meng Liu; Chenchen Miao; Menquan Liu; Meng Guo; Di Li; Pei Wang

arXiv · 2511.02328

ASTROFLOW: A Real-Time End-to-End Pipeline for Radio Single-Pulse Searches

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Abstract

Fast radio bursts (FRBs) are extremely bright, millisecond duration cosmic transients of unknown origin. The growing number of wide-field and high-time-resolution radio surveys, particularly with next-generation facilities such as the SKA and MeerKAT, will dramatically increase FRB discovery rates, but also produce data volumes that overwhelm conventional search pipelines. Real-time detection thus demands software that is both algorithmically robust and computationally efficient. We present Astroflow, an end-to-end, GPU-accelerated pipeline for single-pulse detection in radio time-frequency data. Built on a unified C++/CUDA core with a Python interface, Astroflow integrates RFI excision, incoherent dedispersion, dynamic-spectrum tiling, and a YOLO-based deep detector. Through vectorized memory access, shared-memory tiling, and OpenMP parallelism, it achieves 10x faster-than-real-time processing on consumer GPUs for a typical 150 s, 2048-channel observation, while preserving high sensitivity across a wide range of pulse widths and dispersion measures. These results establish the feasibility of a fully integrated, GPU-accelerated single-pulse search stack, capable of scaling to the data volumes expected from upcoming large-scale surveys. Astroflow offers a reusable and deployable solution for real-time transient discovery, and provides a framework that can be continuously refined with new data and models.

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BibTeX RIS

Guanhong Lin, Dejia Zhou, Jianli Zhang, Jialang Ding, Fei Liu, Xiaoyun Ma, Yuan Liang, Ruan Duan, Liaoyuan Liu, Xuanyu Wang, Xiaohui Yan, Yingrou Zhan, Yuting Chu, Jing Qiao, Wei Wang, Jie Zhang, Zerui Wang, Meng Liu, Chenchen Miao, Menquan Liu, Meng Guo, Di Li, Pei Wang. 2025-11-04. ASTROFLOW: A Real-Time End-to-End Pipeline for Radio Single-Pulse Searches. https://arxiv.org/abs/2511.02328

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