105 citations · 707 across the 36 of their papers we have counts for
4 papers · 1 filter
The Gravothermal Instability at all scales: from Turnaround Radius to Supernovae
Zacharias Roupas
The gravitational instability, responsible for the formation of the structure of the Universe, occurs below energy thresholds and above spatial scales of a self-gravitating expandi…
Relativistic Gravitational Phase Transitions and Instabilities of the Fermi Gas
Zacharias Roupas, Pierre-Henri Chavanis
We describe microcanonical phase transitions and instabilities of the ideal Fermi gas in general relativity at nonzero temperature confined in the interior of a spherical shell. Th…
Gravitational instability caused by the weight of heat
Zacharias Roupas
Thermal energy points toward a disordered, completely uniform state acting counter to gravity's tendency to generate order and structure through gravitational collapse. It is, ther…
Binary black hole growth by gas accretion in stellar clusters
Zacharias Roupas, Demosthenes Kazanas
We show that binaries of stellar-mass black holes formed inside a young protoglobular cluster, can grow rapidly inside the cluster's core by accretion of the intracluster gas, befo…