R. Di Stefano

activity

19942026

most citedMind your Ps and Qs: the Interrelation between Period (P) and Mass-ratio (Q) Distributions of Binary Stars

1.2k citations · 3.7k across the 55 of their papers we have counts for

collaborators

Showing 2026 · astro-ph.HEShow all

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astro-ph.HE2026

A new Chandra look at the globular cluster NGC 6540 and its peculiar X-ray flaring source

A. Sacchi, S. Mereghetti, R. Di Stefano +4

We report the results of a deep ( $\approx 65$ ks) Chandra exposure of the globular cluster NGC 6540, obtained by combining three observations carried out in 2023-2024 to investigate…

astro-ph.HE2026

Hypersoft X-ray Sources as a Low-Energy Class of Luminous Cosmic Emitters

Mustafa Muhibullah, Jimmy A. Irwin, R. Di Stefano

X-ray binaries, powered by accretion onto black holes, neutron stars, or white dwarfs from companion stars, are among the brightest non-explosive beacons in galaxies, outshining th…