A glint in the eye: Photographic plate archive searches for non-terrestrial artefacts
Villarroel, Beatriz; Mattsson, Lars; Guergouri, Hichem; Solano, Enrique; Geier, Stefan; Dom, Onyeuwaoma Nnaemeka; Ward, Martin J.
Onyeuwaoma Nnaemeka Dom
Professor Martin Ward email@example.com
External Examiner (PGR)
In this paper, we present a simple strategy to identify Non-Terrestrial artefacts [NTAs; Haqq-Misra and Kopparapu (2012)] in or near geosynchronous Earth orbits (GEOs). We show that even the small pieces of reflective debris in orbit around the Earth can be identified through searches for multiple transients in old photographic plate material exposed before the launch of first human satellite in 1957. In order to separate between possible false point-like sources on photographic plates from real reflections, we present calculations to quantify the associated probabilities of alignments. We show that in an image with nine “simultaneous transients” at least four or five point sources along a line within a arcmin2 image box are a strong indicator of NTAs, corresponding to significance levels of 2.5 to . This given methodology can then be applied to set an upper limit to the prevalence of NTAs with reflective surfaces in geosynchronous orbits.
Villarroel, B., Mattsson, L., Guergouri, H., Solano, E., Geier, S., Dom, O. N., & Ward, M. J. (2022). A glint in the eye: Photographic plate archive searches for non-terrestrial artefacts. Acta Astronautica, 194, 106-113. https://doi.org/10.1016/j.actaastro.2022.01.039
|Journal Article Type||Article|
|Acceptance Date||Jan 26, 2022|
|Online Publication Date||Feb 14, 2022|
|Deposit Date||May 26, 2022|
|Publicly Available Date||May 26, 2022|
|Peer Reviewed||Peer Reviewed|
Published Journal Article
Publisher Licence URL
This is an open access article distributed under the terms of the Creative Commons CC-BY license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.<br /> <br /> You are not required to obtain permission to reuse this article.
You might also like
Launching the VASCO Citizen Science Project
A high angular resolution view of the PAH emission in Seyfert galaxies using JWST/MRS data