Advancement of Black Hole Theory. Attached is an interesting set of papers concerning a MECO black hole, which differs from a classic black hole in that it does not have an event horizon and has a very strong magnetic field. The MECO solution is consistent with GR. (i.e. It is not new physics.) It also matches observations of quasar structures.
Attached is a Wikipedia link that discusses the black hole MECO solution.
http://en.wikipedia.org/wiki/Magneto...lapsing_object
From the Wikipedia article:
The term Eternally Collapsing Object (ECO) was first coined by astrophysicist Abhas Mitra in 1998[1]. He argued that the so-called observed Black Hole (BH) Candidates must actually be quasistatic ultra compact objects (UCO), called ECOs, though they are asymptotically approaching the true BH state. He mentioned that "Much more importantly, the ECOs may possess magnetic fields whose value could be modest (in extragalactic cases) or extremely high (in stellar mass ECOs). In contrast, the intrinsic magnetic field of supposed BHs is zero. And ECOs might be identified as objects different from BHs by virtue of the existence of such intrinsic magnetic fields"
The following is a paper that discuss why a very, very strong magnetic field is required to explain observed quasar structures.
http://arxiv.org/pdf/astro-ph/0505518 Since observations of the Schild-Vakulik structure within Q0957+561 imply that this quasar contains an observable intrinsic magnetic moment, this represents strong evidence that the quasar does not have an event horizon.
This new paradigm came in the form of five sequentially published papers which presented strong observational and theoretical evidence that both galactic black hole candidates (GBHC) and Active Galactic Nuclei AGN have observable intrinsic magnetic moments.
a) First it was argued (Robertson and Leiter, 2002) that the spectral state switch and quiescent luminosities of low mass x-ray binaries, (LMXB) including GBHC, can be well explained by a magnetic propeller effect that requires an intrinsically magnetized central object.
b) Second it was shown (Leiter and Robertson, 2003; Robertson and Leiter, 2003) that this result was consistent with the existence of a new class of gravitationally collapsing solutions of the Einstein field equations in General Relativity which describe highly red shifted, Magnetospheric, Eternally Collapsing Objects (MECO) that do not have trapped surfaces leading to event horizons.
Comment:
The MECO model is a modified solution to the GR equations that produces a compact massive object that has different properties, as compared to a classical BH. [/quote]