3 papers
astro-ph.HE2025
Nonextensive entropic behavior observed in Quasar 3C 273
C. V. da Silva, S. G. A. Barbosa, F. V. Alencar Filho +2
We investigate the flux intensities spanning from radio waves to X-rays across 39 light curves of Quasar 3C 273, utilizing publicly available data collected by the Integral Science…
gr-qc2024
Nonadditive entropy of the gravitational wave signal from GW150914
Daniel B. de Freitas, Cleo V. da Silva, Mackson M. F. Nepomuceno
We study the first gravitational wave, GW150914, detected by advanced LIGO and constructed from the data of measurement of strain relative deformation of the fabric of spacetime. W…
astro-ph.SR2024
Exploring Detached Eclipsing Binary Systems from TESS Observations: Insights into OBA-type Systems and Orbital Circularization
L. Siqueira, B. W. Freitas, D. B. de Freitas
This study presents photometric solutions for a carefully selected sample of 181 detached eclipsing binary systems recently observed by the Transiting Exoplanet Survey Satellite (T…