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Arecibo Wow! II: Revised Properties of the Wow! Signal from Archival Ohio SETI Data
Abel Méndez, Kevin N. Ortiz Ceballos, Jorge I. Zuluaga et al., 2025. arXiv.
A reanalysis of previously unpublished Ohio SETI observations that narrows the signal to two adjacent fields (RA 19h25m02s or 19h27m55s, Dec −26°57′), raises the peak flux above 250 Jy, moves the frequency to 1420.726 ± 0.005 MHz, and argues for an astrophysical over an interference origin.
What it's used for here
The current best estimate of the signal's parameters; supersedes Ehman's values where they differ.
Our copy
Research copy, for editors and curators. The work is arXiv-nonexclusive, so readers are sent to it. We keep this copy so the citation can be checked if the page changes or goes.
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Cited by on this site 7 records
EVD
The Wow! signal
MYSThe mystery article
Cite it
Méndez, A., Ortiz Ceballos, K. N., Zuluaga, J. I., Palencia-Torres, K. D., Smith, A. J., Cardona Rodríguez, A., Socas-Navarro, H., Kipping, D., Hubbard-James, H. S., Le, M., & Rincón-Torres, A. (2025). Arecibo Wow! II: Revised Properties of the Wow! Signal from Archival Ohio SETI Data. arXiv. https://arxiv.org/abs/2508.10657
@article{mendez2025arecibo,
author = {Méndez, Abel and Ortiz Ceballos, Kevin N. and Zuluaga, Jorge I. and Palencia-Torres, Kelby D. and Smith, Allison J. and Cardona Rodríguez, Alondra and Socas-Navarro, Héctor and Kipping, David and Hubbard-James, Hodari-Sadiki and Le, Mai and Rincón-Torres, Alejandro},
title = {Arecibo Wow! II: Revised Properties of the Wow! Signal from Archival Ohio SETI Data},
journal = {arXiv},
year = {2025},
url = {https://arxiv.org/abs/2508.10657}
}TY - GEN TI - Arecibo Wow! II: Revised Properties of the Wow! Signal from Archival Ohio SETI Data AU - Méndez, Abel AU - Ortiz Ceballos, Kevin N. AU - Zuluaga, Jorge I. AU - Palencia-Torres, Kelby D. AU - Smith, Allison J. AU - Cardona Rodríguez, Alondra AU - Socas-Navarro, Héctor AU - Kipping, David AU - Hubbard-James, Hodari-Sadiki AU - Le, Mai AU - Rincón-Torres, Alejandro PY - 2025 JO - arXiv UR - https://arxiv.org/abs/2508.10657 ER -
Méndez, Abel et al.. “Arecibo Wow! II: Revised Properties of the Wow! Signal from Archival Ohio SETI Data.” arXiv (2025).