Abstract
We consider here the classic scenario given by Oppenheimer, Snyder, and Datt, for the gravitational collapse of a massive matter cloud, and examine its stability under the introduction of small tangential stresses. We show, by offering an explicit class of physically valid tangential stress perturbations, that an introduction of tangential pressure, however small, can qualitatively change the final fate of collapse from a black hole final state to a naked singularity. This shows instability of black hole formation in collapse and sheds important light on the nature of cosmic censorship hypothesis and its possible formulations. The key effect of these perturbations is to alter the trapped surface formation pattern within the collapsing cloud and the apparent horizon structure. This allows the singularity to be visible, and implications are discussed.
| Original language | English |
|---|---|
| Article number | 024009 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 83 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jan 10 2011 |
| Externally published | Yes |
Fingerprint
ASJC Scopus subject areas
- Nuclear and High Energy Physics
Cite this
Instability of black hole formation in gravitational collapse. / Joshi, Pankaj S.; Malafarina, Daniele.
In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 83, No. 2, 024009, 10.01.2011.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Instability of black hole formation in gravitational collapse
AU - Joshi, Pankaj S.
AU - Malafarina, Daniele
PY - 2011/1/10
Y1 - 2011/1/10
N2 - We consider here the classic scenario given by Oppenheimer, Snyder, and Datt, for the gravitational collapse of a massive matter cloud, and examine its stability under the introduction of small tangential stresses. We show, by offering an explicit class of physically valid tangential stress perturbations, that an introduction of tangential pressure, however small, can qualitatively change the final fate of collapse from a black hole final state to a naked singularity. This shows instability of black hole formation in collapse and sheds important light on the nature of cosmic censorship hypothesis and its possible formulations. The key effect of these perturbations is to alter the trapped surface formation pattern within the collapsing cloud and the apparent horizon structure. This allows the singularity to be visible, and implications are discussed.
AB - We consider here the classic scenario given by Oppenheimer, Snyder, and Datt, for the gravitational collapse of a massive matter cloud, and examine its stability under the introduction of small tangential stresses. We show, by offering an explicit class of physically valid tangential stress perturbations, that an introduction of tangential pressure, however small, can qualitatively change the final fate of collapse from a black hole final state to a naked singularity. This shows instability of black hole formation in collapse and sheds important light on the nature of cosmic censorship hypothesis and its possible formulations. The key effect of these perturbations is to alter the trapped surface formation pattern within the collapsing cloud and the apparent horizon structure. This allows the singularity to be visible, and implications are discussed.
UR - http://www.scopus.com/inward/record.url?scp=79551535865&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79551535865&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.83.024009
DO - 10.1103/PhysRevD.83.024009
M3 - Article
VL - 83
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 1550-7998
IS - 2
M1 - 024009
ER -