3 papers
astro-ph.HE2026
The mass of the neutron star in 4U 1820-30 revisited
Marcio G B de Avellar, Jorge E Horvath, Nathalia D Pires +7
We revisit the mass of the neutron star in the ultracompact binary 4U 1820--30 in light of a recently reported transient absorption feature at about 3.8 keV, interpreted as a gravi…
astro-ph.SR2025
Stellar Evolution in Close Binaries: Processes and Outcomes
O. G. Benvenuto, M. A. De Vito, L. Bartolomeo Koninckx +3
We discuss some aspects of stellar evolution in binary systems. While single stars can swell following the chemical evolution of their interior, stars belonging to binary systems c…
astro-ph.SR2025
Formation and nature of "Huntsman" binary pulsars
O. G. Benvenuto, M. A. De Vito, M. Echeveste +4
Spider systems are a class of close binaries in which a neutron star first accretes from a normal companion, and later ablates it in some cases. New observations have expanded this…