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astro-ph.HE2023
A 78- and 96- minute quasi-periodic gamma-ray oscillations in Sagittarius A*
Gustavo Magallanes-Guijón, Sergio Mendoza
Using publicly available gamma-rays data from the Fermi satellite and the Fermitools package, we constructed 867-day light curves of Sagittarius A* to search for potential periodic…
physics.hist-ph2023
A mathematical construction of the 260 day mesoamerican calendar based on archaeoastronomical alignments
Sergio Mendoza
Ancient mesoamerican cultures built a short ritual 260 day calendar and used it for daily routinary life. Using simple arithmetic calculations it is first shown that by forcing the…