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PreprintarXiv licencearXiv

Low Frequency Radio Imaging Study of PSR J1818-1607

  • A. Yadav
  • M. P. Surnis
  • B. C. Joshi
  • M. Bagchi
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Abstract

We report on the low-frequency radio observations of magnetar PSR J1818−1607 carried out with the upgraded Giant Metrewave Radio Telescope at band 3 (300−500 MHz) and band 4 (550-750 MHz). We have identified the continuum source associated with the magnetar and report variations in flux density and its spectral index. The flux density timeseries for the magnetar reveals the presence of two potential radio flaring episodes with varying spectral properties. We discuss the implications of the spectral index changes on the potential emission mechanisms for radio-loud magnetars. We also report non-detections of the continuum source as well as no direct indication for an associated diffuse emission from multiple archival radio imaging surveys.

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Cite

BibTeXRIS
BibTeX
@misc{yadav2026frequency,
  title = {{Low Frequency Radio Imaging Study of PSR J1818-1607}},
  author = {A. Yadav and M. P. Surnis and B. C. Joshi and M. Bagchi},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.20745},
  eprint = {2609.20745},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.20745},
}
RIS
TY  - UNPB
TI  - Low Frequency Radio Imaging Study of PSR J1818-1607
AU  - A. Yadav
AU  - M. P. Surnis
AU  - B. C. Joshi
AU  - M. Bagchi
PY  - 2026
DA  - 2026/09/17
PB  - arXiv
DO  - 10.48550/arxiv.2609.20745
UR  - https://arxiv.org/abs/2609.20745
AB  - We report on the low-frequency radio observations of magnetar PSR J1818−1607 carried out with the upgraded Giant Metrewave Radio Telescope at band 3 (300−500 MHz) and band 4 (550-750 MHz). We have identified the continuum source associated with the magnetar and report variations in flux density and its spectral index. The flux density timeseries for the magnetar reveals the presence of two potential radio flaring episodes with varying spectral properties. We discuss the implications of the spectral index changes on the potential emission mechanisms for radio-loud magnetars. We also report non-detections of the continuum source as well as no direct indication for an associated diffuse emission from multiple archival radio imaging surveys.
ER  -