Search Results - subject:"Stellar polytrope"

Non-extensive statistics and the stellar polytrope index

Silva, R; Alcaniz, J.S - In: Physica A: Statistical Mechanics and its Applications 341 (2004) C, pp. 208-214

possible limits on the stellar polytrope index n. …

Persistent link: https://www.econbiz.de/10010590116

Description of quasi-equilibrium states of self-gravitating systems based on non-extensive thermostatistics

Sakagami, Masa-aki; Taruya, Atsushi - In: Physica A: Statistical Mechanics and its Applications 340 (2004) 1, pp. 444-452

-gravitating stellar systems. Extremizing the Tsallis entropy, we obtain an equation of the state known as stellar polytrope. And a role of …

Persistent link: https://www.econbiz.de/10010590363

Fokker–Planck study of stellar self-gravitating system away from the thermal equilibrium: connection with non-extensive statistics

Taruya, Atsushi; Sakagami, Masa-aki - In: Physica A: Statistical Mechanics and its Applications 340 (2004) 1, pp. 453-458

We present a recent progress on the numerical study of the long-term evolution of stellar self-gravitating systems, focusing on the connection with non-extensive statistics. In particular, we discuss the quasi-equilibrium behaviors found in the previous N-body simulations. Using the...

Persistent link: https://www.econbiz.de/10010591409

Gravothermal catastrophe and Tsallis’ generalized entropy of self-gravitating systems. (II). Thermodynamic properties of stellar polytrope

Taruya, Atsushi; Sakagami, Masa-aki - In: Physica A: Statistical Mechanics and its Applications 318 (2003) 3, pp. 387-413

-extensive nature in stellar polytrope. …

Persistent link: https://www.econbiz.de/10011059997

Gravothermal catastrophe and Tsallis’ generalized entropy of self-gravitating systems. (III). Quasi-equilibrium structure using normalized q-values

Taruya, Atsushi; Sakagami, Masa-aki - In: Physica A: Statistical Mechanics and its Applications 322 (2003) C, pp. 285-312

entropy, the so-called stellar polytrope, has consistent thermodynamic structure, which predicts the thermodynamic instability … described by the stellar polytrope. While the thermodynamic stability for a system confined in an adiabatic wall completely …/instability criteria are consistently explained from the presence of negative specific heat and within the formalism, the stellar polytrope …

Persistent link: https://www.econbiz.de/10010590925