A highly magnetized long-period radio transient exhibiting unusual emission features
Data files
Feb 28, 2025 version files 712.50 MB
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dryad_data.tar.gz
712.50 MB
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README.md
1.18 KB
Abstract
Long-period radio transients are a new class of astrophysical objects that exhibit periodic radio emission on timescales of tens of minutes. Their true nature remains unknown; possibilities include magnetic white dwarfs, binary systems, or long-period magnetars; the latter class are predicted to produce fast radio bursts (FRBs). Using the MeerKAT radio telescope, we conducted follow-up observations of the long-period radio transient GPM J1839–10. Here we report the source exhibits a wide range of unusual emission properties, including polarization characteristics indicative of magnetospheric origin, linear-to-circular polarization conversion, and drifting sub-structures closely resembling those observed in repeating FRBs. These radio characteristics provide clear evidence in support of the long-period magnetar model and establish the missing link between long-period radio transients, magnetars, and FRBs.
https://doi.org/10.5061/dryad.ghx3ffbww
The dataset includes MeerKAT follow-up observation data used in the analysis of GPM1839-10 in the paper https://www.science.org/doi/10.1126/sciadv.adp6351.
Description of the data and file structure
The data are structured in the order corresponding to the plots in the manuscript.
The compressed data archive follows this structure:
dryad_data.tar.gz
|- data/
| | - plot1/ |
| | - plot2/ |
| | - plot3/ |
| | - plot4/ |
, where each subdirectory contains Stokes data used to reproduce Figures 1, 2, 3, and 4 in the paper, respectively. The suffix “vt”* represents the array of time samples. “vf” represents the array of frequency channels. “mxI”, “*mxQ”, “mxU”, “mxV’ correspond to the Stokes parameters I, Q, U, and V respectively.
Sharing/Access information
NA
Code/Software
This dataset also includes a Jupyter notebook, python_scripts.ipynb, which provides the necessary code to reproduce the figures presented in the paper.