Polarized pulse pair observations during a long duration interstellar communication experiment
Fuente:
arXiv
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866916710126190592 |
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| author | Crilly jr, William J. |
| author_facet | Crilly jr, William J. |
| contents | In prior work, conducted since 2017, two celestial pointing directions have been observed to be associated with the measurement of anomalous high counts of narrow bandwidth, short duration, polarized radio frequency pulse pairs. The prior experimental work utilized up to three geographically-spaced synchronized radio telescopes, a single-dish radio telescope, and a radio interferometer. The experimental work reported here examines full right ascension coverage at one declination, utilizing the interferometer, during 124.1 days. Results suggest the possible presence of an additional anomalous celestial pointing direction. Seven standard deviations of noise-modeled shifts of mean polarized pulse pair count were observed in three celestial directions. Indications of interferometer space delay aliasing were observed. A phase noise test, celestial source identification methods and associated measurements were used to seek potential explanations of the unusual observed phenomena. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_19765 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Polarized pulse pair observations during a long duration interstellar communication experiment Crilly jr, William J. Signal Processing Instrumentation and Methods for Astrophysics In prior work, conducted since 2017, two celestial pointing directions have been observed to be associated with the measurement of anomalous high counts of narrow bandwidth, short duration, polarized radio frequency pulse pairs. The prior experimental work utilized up to three geographically-spaced synchronized radio telescopes, a single-dish radio telescope, and a radio interferometer. The experimental work reported here examines full right ascension coverage at one declination, utilizing the interferometer, during 124.1 days. Results suggest the possible presence of an additional anomalous celestial pointing direction. Seven standard deviations of noise-modeled shifts of mean polarized pulse pair count were observed in three celestial directions. Indications of interferometer space delay aliasing were observed. A phase noise test, celestial source identification methods and associated measurements were used to seek potential explanations of the unusual observed phenomena. |
| title | Polarized pulse pair observations during a long duration interstellar communication experiment |
| topic | Signal Processing Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2504.19765 |