Rushuang Zhao

A Catalog of Giant Radio Source Candidates from TGSS ADR1 Using a Deep Learning–based Pipeline

B. Q. Lao, Binghua Liang, Shaoguang Guo, Junxiu Liu et autres

Abstract We present a catalog of 5595 giant radio source (GRS) candidates, defined by a largest (projected) linear size (LLS) exceeding 0.7 Mpc. Of these, 4566 would be new discoveries if confirmed. These candidates were identified through a systematic and automated search …

cn (code pays fourni par la source)

Design and Implementation of a Dual-Mode Digital Backend for the GZNU Small Antenna Array

Zhongxu Chen, Rushuang Zhao, Jian Li, Xing Huang et autres

Abstract Small-aperture radio antenna arrays provide flexible platforms for high-time-resolution searches of bright radio transients, such as pulsar giant pulses and fast radio bursts, as well as for long-duration monitoring and technical validation of array observing modes. To support the GZNU small-aperture …

cn (code pays fourni par la source)

Radio Studies of Globular Cluster Pulsars in the SKA Era

Lei Zhang, Di LI, Wenjun Xiao, Rushuang Zhao et autres

A 44-min periodic radio transient in a supernova remnant.

Di Li, Mao Yuan, Lin Wu, Jingye Yan et autres

Long-period radio transients (LPTs) are a newly discovered class of radio emitters with periods ranging from minutes to hours. The astrophysical nature remains undetermined, particularly of LPTs with no detectable companions. We report the first evidence for a plausible supernova remnant (SNR) …

cn, au, fi (code pays fourni par la source)

Observations of Crab Pulsar Giant Pulses with the Parkes Ultra-Wideband (UWL) Receiver

Lanqin Wang, Rushuang Zhao, Hui Liu, Zefeng Tu et autres

We present a systematic study of giant pulses (GPs) from the Crab pulsar (PSR J0534+2200) using ultra-wideband observations with the Parkes radio telescope. We introduce an empirical classification scheme based on the cumulative distribution function (CDF) of pulse energy in frequency, separating …

Constraining the Anisotropy of the Galactic Halo with Fast Radio Burst Dispersion Measures: A Two-point Correlation Analysis

Yidan Wang, Pei Wang, Di Li, Yunlong Zhang et autres

Abstract We propose a novel method based on the two-point cross-correlation of Fast Radio Burst (FRB) dispersion measures (DMs) to probe potential anisotropy in the Galactic halo. By utilizing five distinct halo models, i.e., modified Navarro–Frenk–White model, the spherical plus disk two-component …

cn (code pays fourni par la source)

Single-pulse study of the pseudo-nulling Pulsar PSR J1820-0509 based on FAST observations

Zefeng Tu, Rushuang Zhao, Hui Liu, Biping Gong et autres

ABSTRACT Using two observations from the Five-hundred-metre Aperture Spherical radio Telescope (FAST), we performed a detailed single-pulse analysis of the high-nulling pulsar PSR J1820–0509. We find an exceptionally high nulling fraction of about 81.78 per cent, significantly exceeding previous results from Parkes …

cn (code pays fourni par la source)

Single-Pulse Study of the Pseudo-nulling Pulsar PSR J1820-0509 Based on FAST Observations

Zefeng Tu, Rushuang Zhao, Hui Liu, Biping Gong et autres

Using two observations obtained with the Five-hundred-meter Aperture Spherical radio Telescope (FAST), we present a detailed single-pulse analysis of the high-nulling pulsar PSR J1820-0509. We measure an exceptionally high nulling fraction of approximately 81.78%, significantly exceeding previous estimates from Parkes observations. The …

Single-Pulse Study of the Pseudo-nulling Pulsar PSR J1820-0509 Based on FAST Observations

Zefeng Tu, Rushuang Zhao, Hui Liu, Biping Gong et autres

Using two observations obtained with the Five-hundred-meter Aperture Spherical radio Telescope (FAST), we present a detailed single-pulse analysis of the high-nulling pulsar PSR J1820-0509. We measure an exceptionally high nulling fraction of approximately 81.78%, significantly exceeding previous estimates from Parkes observations. The …

Flux Variations of Fast Radio Bursts and Their Persistent Radio Sources: Evidence for a Shared Progenitor

Xinming Li, Chenhui Niu Chenhui Niu, J. J. Zhang, Di Li et autres

Fast radio bursts (FRBs) are millisecond-duration extragalactic radio transients, some of which are associated with compact persistent radio sources (PRSs), hinting at a physical connection. While several models have been proposed to explain PRSs and their connection to FRBs, direct observational tests …

A comprehensive search for long and short periodic features from an extremely active cycle of FRB 20240114A

Dengke Zhou, Pei Wang, Jianhua Fang, Weiwei Zhu et autres

cn, us, hk, au (code pays fourni par la source)

A Catalog of 971 FR I Radio Galaxies from the FIRST Survey via Hybrid Deep Learning and Ridgeline Flux Density Distribution Analysis

B. Q. Lao, Xiaolong Yang, Wenjun Xiao, Tapan K. Sasmal et autres

Abstract We present a catalog of 971 FR I radio galaxies (FR Is) identified from the Very Large Array Faint Images of the Radio Sky at Twenty centimeters (FIRST) survey. The identifications were made using a hybrid method that combines deep learning …