Horizon free eternally collapsing anisotropic radiating star

A different approach to anisotropic spherical collapse with shear and heat radiation

“…It has been noticed that there is an additional, simple solution, linear in time for g rr , which leads to eternal collapse and a horizon never appears. This happens both for perfect [5], [7], [11] and imperfect fluids [12]. An example of this no-horizon phenomenon is given for the geodesic case (g tt = 1) without shear, too [13].…”

“…This allows to obtain immediately the redshift from Eq (17). Next we find the mass m from Eq (12) and B from Eq (32). Now it is possible to measure the heat flow q from Eq (23) and the energy density µ.…”

All solutions for geodesic anisotropic spherical collapse with shear and heat radiation

“…In this paper we have integrated the main junction condition (16, 22) The solution with linear in time physical radius R leads in the shearless case to infinite collapse without black hole (Banerjee et al 2002), (Ivanov 2012), (Tewari and Charan 2015).…”

“…A third scenario is the "eternal collapse" when 2m/R is a constant, smaller than 1 so that a horizon never develops. It is a well-known option in the shearless case (Tewari and Charan 2015).…”

On the Gamma-Ray Bursts Origin

“…"Thus the previous results that so-called BHCs are actually extremely hot, ultramagnetized, Magnetospheric Eternally Collapsing Objects rather than anything else get reconfirmation by nonoccurrence of Type I X-ray bursts in BHCs". On the same ground Tewari and Charan [6] [7] presented some mathematical evidences for Eternally Collapsing radiating Star and constructed Supernova models in certain conditions in which BHCs can form with some remnant. Initially both the mass and physical radius of pre Supernova remains 2.4 M  and 4.86 km respectively at the time of black hole formation [6].…”