The Cornell archives had three very long papers on holostars today 70, 43 and 40 pages. I just read the abstracts which are copied below.
Perhaps some physics student couls read the entire papers. My concern was mainly to know what a holostar was, as described in the abstracts below. Its name derives from the fact tht information is preserved in such a black hole, and must be a contraction of hologram and star. Not sure why a black hole should be called a star. Perhaps someone couls read and explain why to me.
Enjoy
Richard

http://arxiv.org/abs/grqc/0306066
The holostar  a selfconsistent model for a compact selfgravitating object
Authors: Michael Petri (Bundesamt fuer Strahlenschutz, Salzgitter, Germany)
Comments: 70 pages
The holostar is an exact spherically symmetric solution to the field equations of general relativity with anisotropic interior pressure. Its properties are similar to a black hole. It has an internal temperature inverse proportional to the square root of the radial coordinate value, from which the Hawking temperature law follows. The number of particles within any concentric region of the holostar's interior is proportional to the proper area of its boundary. The holostarmetric is static throughout the whole spacetime. There are no trapped surfaces, no singularity and no event horizon. Information is not lost. The weak and strong energy conditions are fulfilled everywhere, except for a Plancksize region at the center.
Geodesic motion of massive particles in a large holostar is similar to what is observed in the universe today: A material observer moving geodesically experiences an isotropic outward directed Hubbleflow of massive particles. The total matterdensity decreases over proper time by an inverse square law. The local Hubble radius increases linearly over time. Geodesic motion of photons preserves the Planckdistribution. The local radiation temperature decreases over time by an inverse square law. The current radial position r of an observer can be determined by measurements of the total local massdensity, the local radiation temperature or the local Hubbleflow. The values of r determined from the CBMRtemperature, the Hubble constant and the total massdensity of the universe are equal within an error of a few percent to the radius of the observable universe.
The holographic solution also admits microscopic selfgravitating objects with a surface area of roughly the Planckarea and zero gravitating mass.
http://arxiv.org/abs/grqc/0306068
Charged holostars
Authors: Michael Petri (Bundesamt fuer Strahlenschutz, Salzgitter, Germany)
Comments: 43 pages
The so called holostar solution of general relativity is generalized to the charged case. The exterior metrics and fields of the charged holostar are equal to the ReissnerNordstroem black hole solution. The holostar's gravitating mass, corrected by a quantity of roughly Planckmass is always larger than its charge. Whereas Reissner Nordstroem solutions with larger charge are possible, but are excluded by the cosmic censorship hypothesis, a charged holostar with higher than the maximum charge doesn't exist.
The total interior energy density and principal pressures of the charged holostar  as well as the interior metric  are equal to the uncharged case. The holostar's exterior charge is proportional to the number of its interior (massive) particles. The membrane is uncharged. The interior energy density splits into an electromagnetic contribution and a "matter" contribution. An extremely charged holostar consists entirely out of electromagnetic energy. Its membrane vanishes and its metric derivatives are continuous at the boundary separating the sources of the electromagnetic field from the exterior electrovac spacetime.
A large charged/rotating holostar can be regarded as the classical analogue of a quantum gravity spinnetwork state. If the links of a large spin network state are identified with the interior relativistic particles of the holostar solution, the Immirzi parameter can be determined. Its value is roughly a factor of 4.8 higher than the result derived by Ashtekar et.al. by counting horizon surface states. An explanation for the discrepancy is given. An entropy conservation law for self gravitating systems is proposed.
http://arxiv.org/abs/grqc/0306067
Holostar thermodynamics
Authors: Michael Petri (Bundesamt fuer Strahlenschutz, Salzgitter, Germany)
Comments: 47 pages
A simple thermodynamic model for the final state of a collapsed, spherically symmetric star is presented. It is assumed, that the star's interior at the endpoint of the collapse consists of an ideal gas of ultrarelativistic fermions and bosons in thermal equilibrium and that the metric approaches the static metric of the so called holostarsolution of general relativity.
The final configuration has a radius slightly exceeding the gravitational radius of the star. The radial coordinate difference between gravitational and actual radius is of order of the Planck length. The total number of ultrarelativistic particles within the star is proportional its proper surfacearea, measured in units of the Planckarea. This is first direct evidence for the microscopicstatistical nature of the Hawking entropy and indicates, that the holographic principle is valid for compact self gravitating objects of any size.
A "StephanBoltzmanntype" relation between the surface temperature and the surface area of the star is derived. This relation implies a well defined interior temperature proportional to the inverse square root of the radial coordinate. The Hawking temperature and entropy are derived up to a constant factor. Interior temperature and Hawking temperature are related. Using the experimental values for the CMBRtemperature and the total matterdensity of the universe the Hawking temperature law is verified to an accuracy of 1%.
The contribution of the holostar's membrane to its entropy and gravitating mass is discussed under the assumption, that the membrane consists of a gas of bosons whose number is roughly equal to the number of the interior particles. Some properties expected from a rotating holostar are discussed briefly.
