One of those present described the aura as the magnetic field around the physical body, adding, if I recall correctly, that it emanated from the body. I pointed out that the field of the aura was not magnetic and that the physical body emanated from the field of the aura, not the other way round, adding that referring to the aura as a magnetic field compounded the problems that people like me, who understand science, were having with the mainstream science people when non-science people were persisting in using such terminology.
When the magnetic field explanation was repeated, I said that it was not detectable with magnetometers, it was not physical but was an etheric field. A person who taught yoga then said that the people she taught were of mixed religions, many of which could not handle the term “etheric”, so she insisted on calling it a magnetic field. Then the matter of the ancient science connected with yoga was brought up. Since the ancients did not know about magnetic fields I could not see how that made any sense. Either way it came down to people being told that the aura was something that it was not and, apparently, science, of a fashion, being brought into it as well. By such routes is disinformation and misunderstanding borne.
As it was then put that the aura not being magnetic was just my opinion, I started to explain what I understood and include the science, as far as it could go, thought about it, then just said that it was at the quantum physics level, really beyond that; I was talking to people who would be lost a that level anyway; not an adverse comment on them, it was just that I would be using terminology and concepts that were outside their knowledge and experience.
I thought about such matters on the way home, maybe thought too much, then decided that I really must try to finish the explanation for auras, as well as other matters, that I started writing a couple of years ago, or more, for my Psychic Engineer Web Site. The problem, as is usually the case with me, was spending too much time and effort getting everything as right as possible, before actually publishing it. Were it not for such a trait there would be far more on my Web Sites and Psychic Engineer Blog. My book "Remembering Lorelei" might also be finished, though the reticence there is partly, largely, to do with the eruption that will take place when certain information on events in Havant finally emerges into the public domain.
I recalled an article that I had read “A Brief Scientific Look at the Human Aura, Its existence and Meaning” by Violet Aura on Associated Content. While I have no doubt that it was written with the best of intentions it is, regrettably, far from scientific and much of the rest of the article does not fit very well with my understanding of such matters.
For the time being a reasonable approximation would be to view the aura as an energy field, more properly a field that can be represented by a stress-energy tensor which is not in Einstein-Minkowsky space-time; it is to form structures in physical reality but only partly in physical space-time.
Wikipedia is useless for non-physical matters, or anything non-mainstream, though the mainstream itself is very questionable, due to the large number of amateur editors with a heavy materialistic bias who “know it all”, though have not a clue. However, for limited instances involving mainstream explanations, it has its uses; from that point of view the Wikipedia explanation of the stress-energy tensor may be useful.
As already pointed out, the aura does not emanate from the physical body, the physical body emanates from the aura. That is generally applicable in that all biologically living entities have a comparable structure, as well as other “entities”, plus physical reality being generated by and supported by non-physical energies and structures.
The spiritual is prime, the non-physical sub-prime, the physical sub-sub-prime; at least as an approximate explanation.
The aura is part of the non-physical level of existence that is close to the physical, part of what David Bohm referred to as the implicate order, supporting the explicate order of physical reality.
For an overall understanding without the science mentioned above, this is best achieved by referring to Barbara Brennan’s books, such as “Hands of Light: A Guide to Healing Through the Human Energy Field” and Web Sites relating to Barbara’s work. Barbara Brennan gained mainstream science degrees before she developed knowledge of this field. Though I do not see as much as is illustrated in Barbara’s books, all that I do see and feel corresponds with those descriptions and illustrations, similarly for my Healer colleagues.