Is the Carter-Israel conjecture correct?

TL;DR

This paper explores whether the collapse of matter can produce super-spinning objects without event horizons, challenging the Carter-Israel conjecture, and discusses how upcoming observations could test this possibility.

Contribution

It proposes a scenario where collapsing matter forms horizonless super-spinning objects and suggests observational tests using future sub-millimeter data of SgrA*.

Findings

Potential to distinguish black holes from horizonless objects with future observations

Discussion of observational signatures at sub-millimeter wavelengths

Implications for the validity of the Carter-Israel conjecture

Abstract

According to the Carter-Israel conjecture, the end-state of the gravitational collapse of matter is a Kerr-Newman black hole. Nevertheless, neither the theory nor observations can confirm that. In this talk, we discuss the possibility that the collapsing matter can create a super-spinning compact object with no event horizon, and we show how near future observations at sub-millimeter wavelength of SgrA* can test this scenario for the black hole candidate in the Galactic Center.