We extend the Krori-Barua analysis of the static, spherically symmetric, Einstein-Maxwell field equations and consider charged fluid sources with anisotropic stresses. The inclusion of a new variable (tangential pressure) allows the use of a non-linear, Chaplygin-type equation of state with coefficients fixed by the matching conditions at the boundary of the source. Some physical features are briefly discussed.

No abstract

No abstract

No abstract

The scaled factorial moment, which is a statistical tool for measuring large local fluctuations of dynamical origin, has been utilized to probe the distribution of secondary particles produced in 16 O-AgBr interactions at 60 GeV/n. The analysis indicates the occurrence of a non-thermal phase transition in case of pionisation in heavy-ion interactions at extremely high energy.