105 citations · 707 across the 36 of their papers we have counts for
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Galaxy clusters and structure formation in quintessence versus phantom dark energy universe
Zacharias Roupas, Minos Axenides, George Georgiou +1
The self-gravitating gas in the Newtonian limit is studied in the presence of dark energy with a linear and constant equation of state. Entropy extremization associates to the isot…
Gravothermal instability with a cosmological constant in the canonical ensemble
Minos Axenides, George Georgiou, Zacharias Roupas
We present here how the gravothermal or Antonov's instability, which was originally formulated in the microcanonical ensemble, is modified in the presence of a cosmological constan…
Gravitational instabilities of isothermal spheres in the presence of a cosmological constant
Minos Axenides, George Georgiou, Zacharias Roupas
Gravitational instabilities of isothermal spheres are studied in the presence of a positive or negative cosmological constant, in the Newtonian limit. In gravity, the statistical e…
Gravothermal Catastrophe with a Cosmological Constant
Minos Axenides, George Georgiou, Zacharias Roupas
We investigate the effect of a cosmological constant on the gravothermal catastrophe in the Newtonian limit. A negative cosmological constant acts as a thermodynamic `destabilizer'…