BHT5 - |
Speaker_ |
Mitra, Abhas |
Co-autors |
1. Abhas Mitra, MPKI, Heidelberg, Germany,; 2. Norman K Glendenning, LBL, CA, USA; 3. Stanley Robertson, SWOSU, Weatherford, OK, USA; 4. Darryl Leiter, MARC, Charlottesville, VA, USA |
Talk _ |
Black Holes or Eternally Collapsing Objects? |
Abstract _ |
Gravitational collapse is always accompanied by radiation (Mitra, gr-qc/0605066). As the collapsing object becomes extremely compact, i.e., surface redshift z >>1, the emergent radiation quanta get gravitationally trapped. It has been shown that the heat flux associated with increased trapped radiation must change the catastrophic collapse into a secular quasistatic contraction (Mitra and Glendenning, submitted PRL, 2006). It follows then that the object becomes radiation dominated (Mitra, MNRAS, L66,367, 2006) at arbitrary low/high mass scale (Mitra, MNRAS, in press, 2006, gr-qc/0603055) before becoming true black holes. Such radiation pressure supported hot quasistatic objects having no mass upper/lower limit and radius equal to the Schwarzschild value are called Eternally Collapsing Objects(ECOs). |