Search Results - Keith Grainge

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  1. 1
    Integrated Dissemination System of Frequency, Time and Data for Radio Astronomy

    Integrated Dissemination System of Frequency, Time and Data for Radio Astronomy by Yufeng Chen, Bo Wang, Lijun Wang, Keith Grainge, Richard Oberland, Richard Whitaker, Althea Wilkinson

    Published 2021-01-01

    For radio telescope array applications, the precise time and frequency reference predominantly determines the quality of the observation. In this paper, we demonstrate an integrated dissemination system which can achieve ultra-stable frequency dissemination, time synchronization and data transfer si...

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  2. 2
    Emission-line Stacking of 21 cm Intensity Maps with MeerKLASS: Inference Pipeline and Application to the L-band Deep-field Data

    Emission-line Stacking of 21 cm Intensity Maps with MeerKLASS: Inference Pipeline and Application to the L-band Deep-field Data by Zhaoting Chen, Steven Cunnington, Alkistis Pourtsidou, Laura Wolz, Marta Spinelli, José Luis Bernal, Matilde Barberi-Squarotti, Stefano Camera, Isabella P. Carucci, José Fonseca, Keith Grainge, Melis O. Irfan, Mario G. Santos, Jingying Wang, (MeerKLASS Collaboration)

    Published 2025-01-01

    We present a novel analysis of observational systematics through the emission-line stacking of the MeerKLASS L -band deep-field intensity maps, following the detection in MeerKLASS Collaboration et al. A stacking signal is obtained by stacking the 21 cm intensity map cubelets around the galaxy posit...

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  3. 3
    CRAFTS for H i Cosmology. I. Data Processing Pipeline and Validation Tests

    CRAFTS for H i Cosmology. I. Data Processing Pipeline and Validation Tests by Wenxiu Yang, Laura Wolz, Yichao Li, Wenkai Hu, Steven Cunnington, Keith Grainge, Furen Deng, Shifan Zuo, Shuanghao Shu, Xinyang Zhao, Di Li, Zheng Zheng, Marko Krčo, Yinghui Zheng, Linjing Feng, Pei Zuo, Hao Chen, Xue-Jian Jiang, Chen Wang, Pei Wang, Chen-Chen Miao, Yougang Wang, Xuelei Chen

    Published 2025-01-01

    We present the calibration procedures and validation of source measurement with the data of the Commensal Radio Astronomy FAST Survey for H i intensity mapping by the Five-hundred-meter Aperture Spherical Radio Telescope. Using a 70 hr drift-scan observation with the L -band (1.05–1.45 GHz) 19 beam...

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