Non-occurrence of trapped surfaces and Black Holes in spherical gravitational collapse: An abridged version

Details Non-occurrence of trapped surfaces and Black Holes in spherical gravitational collapse: An abridged version Non-occurrence of trapped surfaces and Black Holes in spherical gravitational collapse: An abridged version

1999-10-22

arxiv.org/abs/astro-ph/9910408v5

Found.Phys.Lett. 13 (2000) 543

Astronomy and Astrophysics

Astrophysics

To be published in the Dec., 2000 issue of Foundation of Physics Letters. Several small changes, more discussion on the nature

Scientific paper

We have shown in that for arbitrary EOS and radiation transport properties, (even) the idealized spherical gravitational collapse DOES NOT lead to the formation of trapped surfaces: 2GM(r,t)/R <=1. Hence all singularity theorems of Hawking, Penrose and Geroch, built on the assumption of formation of trapped surfaces, get invalidated! And this inequality, demands that M->0 if indeed R->0. We have shown that the final state corresponds to a zero mass BH state and, this state would occur only after infinite proper time indicating that GR is indeed the only naturally singularity free theory for isolated bodies (as was cherished by Einstein). This M->0 state would materialize after the body radiates its entire initial mass-energy. Thus there is no event horizon at any finite R or M, and, therefore all the great theoretical confusions like whether there could be (i) White Holes, (ii) whether t (R) becomes spacelike (timelike) inside the EH (iii) Loss of information in gravitational collapse, and (iv) validity of cosmic censorship conjecture get resolved. At any finite proper time, the collapsed object would be either static (z<2) or may appear static (R almost frozen) though, in extreme cases, internally, in terms of proper radial length, it might be collapsing at a speed ~c! We call the latter as Eternally Collapsing Objects.

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