ar X iv : a st ro - p h / 05 11 73 8 v 3 1 9 Ja n 20 06 Equilibrium of large astrophysical structures in the Newton - Hooke spacetime

ar X iv : a st ro - p h / 05 11 73 8 v 2 2 9 N ov 2 00 5 Equilibrium of large astrophysical structures in the Newton - Hooke spacetime

Using the scalar and tensor virial equations, the Lane-Emden equation expressing the hydrostatic equilibrium and small oscillations around the equilibrium, we show how the cosmological constant Λ affects various astrophysical quantities important for large matter conglomeration in the universe. Among others we examine the effect of Λ on the polytropic equation of state for spherically symmetric...

ar X iv : a st ro - p h / 05 11 73 8 v 1 2 5 N ov 2 00 5 Equilibrium of large astrophysical structures in the Newton - Hooke spacetime

Using the scalar and tensor virial equations, the Lane-Emden equation expressing the hydrostatic equilibrium and small oscillations around the equilibrium, we show how the cosmological constant Λ affects various astrophysical quantities important for large matter conglomeration in the universe. Among others we examine the effect of Λ on the polytropic equation of state for spherically symmetric...

ar X iv : a st ro - p h / 97 01 22 8 v 1 2 9 Ja n 19 97 Large - scale Structures revealed by Wavelet Decomposition 1

ar X iv : a st ro - p h / 05 06 29 8 v 1 1 4 Ju n 20 05 The application of slim disk models to ULX : the case of M 33 X - 8

A comparative XMM-Newton archival data spectral study of the ultraluminous Xray source (ULX) M33 X-8 has been performed by using both the standard disk model and the newly developed slim disk models. The results of this analysis tend to confirm the hypothesis that M33 X-8 is an X-ray binary with a stellar-mass black hole accreting at super-Eddington rate.

ar X iv : a st ro - p h / 05 01 23 7 v 1 1 2 Ja n 20 05 1 Nuclear physics and astrophysics of the r - process

Some nuclear and astrophysical aspects of the r-process are discussed. Particular attention is paid to observations of abundances in metal-poor stars and their implications for the astrophysical site and yield patterns of the r-process. The effects of supernova neutrinos and related nuclear processes on the yield patterns are explored. The uncertainties in the theoretical nuclear input for the ...