Starship Asterisk*

Alright I've had a chance to talk to the theory people.

The general result is that BHs cannot have magnetic fields (though of course the material around them can), this comes about because if it didnt you could use the magnetic field to probe the structure of the BH inside the event horizon. The way I had it described is that if you have two particles connected by a magnetic field and one enters the EH the field line is broken (which is allowed), if it wasnt you could use the field lines influence on the particle on the outside to tell you about what was happening to the particle inside the EH. Its part of the BHs censorship.

However BHs can have charge, but to an observer outside the BH it seems as if all the charge is concentrated at a point source at the centre of the BH, so you cannot derive any information from it. In the real Universe however its very difficult for a BH to become charged, as it would tend to neutralise very rapidly as more oppositely charged objects are attracted.

Generally speaking, Planetary magnetic fields are generated by the rotation of a liquid metallic core. If Stars have magnetic fields, do they also have liquid metallic cores or is there another means by which the magnetic field could be generated?

If magnetic field generation IS dependant upon having a rotating liquid metalic core, would elementally light stars (first or second generation) have magnetic fields if they were composed entirely of H & He?

I would imagine that the physical dynamics of the BH enviornment wouldn't allow for the existance of a rotating liquid metallic core that could generate a magnetic field.

So time has two meanings:
The decay of sub atomic particles and a reference for motion?

Time is more than a simple measuring device. Space/time is the standard term used to describe where and when something is in the universe but is also a residual "force" caused by the presence of matter/gravity. In advanced SR equations, the conservation of energy to accelerate an object is tied into the changing in relative time. Also, time and gravity are the only two "forces" that move in one direction and have no canceling force.

BMAONE23 wrote:Generally speaking, Planetary magnetic fields are generated by the rotation of a liquid metallic core. If Stars have magnetic fields, do they also have liquid metallic cores or is there another means by which the magnetic field could be generated?

If magnetic field generation IS dependant upon having a rotating liquid metalic core, would elementally light stars (first or second generation) have magnetic fields if they were composed entirely of H & He?

I would imagine that the physical dynamics of the BH enviornment wouldn't allow for the existance of a rotating liquid metallic core that could generate a magnetic field.

Hydrogen becomes very metal-like under high pressures (hence the term 'liquid metallic hydrogen'), which is what's thought to generate the powerful magnetic fields of Jupiter and Saturn. Stars are primarily composed of plasma, which is energetic, charged gas, effectively. Flowing plasma means flowing electric charge, and that generates magnetic fields.

astro_uk wrote:Alright I've had a chance to talk to the theory people.

The general result is that BHs cannot have magnetic fields (though of course the material around them can), this comes about because if it didnt you could use the magnetic field to probe the structure of the BH inside the event horizon. The way I had it described is that if you have two particles connected by a magnetic field and one enters the EH the field line is broken (which is allowed), if it wasnt you could use the field lines influence on the particle on the outside to tell you about what was happening to the particle inside the EH. Its part of the BHs censorship.

Wow, okay, I'd never thought of the magnetic field being a probe beyond the event horizon. That's a good point! I suppose it's not really possible to have a point-source magnetic dipole...

I have to wonder what happens to the magnetic field of the precursor object that collapses into a black hole, though. I assume the field somehow 'collapses' and ends up simply contributing to the mass-energy of the hole itself?

Hello Qev


You said

Hydrogen becomes very metal-like under high pressures (hence the term 'liquid metallic hydrogen'), which is what's thought to generate the powerful magnetic fields of Jupiter and Saturn. Stars are primarily composed of plasma, which is energetic, charged gas, effectively. Flowing plasma means flowing electric charge, and that generates magnetic fields.

There are varies forms of Plasma and not just gas charged particals.
Varies types invovle, neutrons, quarks and so on producing a superfluid.

Look ar plasma science for further info.

Hello All

Re link

http://sci.esa.int/science-e/www/object ... ctid=39706
Magnetic heart of a 3D reconnection event revealed by Cluster

Magnetic reconnection is a key physical process in space and laboratory plasmas and its macroscopic consequences are numerous. To name a few, it is the physical process responsible for solar flares, tremendous solar explosion sometimes billion times more powerful than an atomic bomb. It is also considered to be the most efficient mechanism for solar material to penetrate the Earth's magnetic shield, a potential hazard to astronauts and satellites. In the Earth's magnetotail, consequences of magnetic reconnection include significant energetic particle injection at geosynchronous orbit and increased auroral activity. On Earth, it is a mechanism preventing magnetic confinement of the fusion fuel, thus a key issue to produce electricity via controlled fusion reactors.

harry wrote:There are varies forms of Plasma and not just gas charged particals.
Varies types invovle, neutrons, quarks and so on producing a superfluid.

Look ar plasma science for further info.

I'm pretty sure that all plasmas (in the realm of physics at least) can be defined as an energetic gas of charged particles. Quarks carry charge, just as ionized atoms do. It doesn't even have to be electric charge, just some force charge.

Superfluid neutrons probably generate magnetic fields through their spin; I'm not sure at all how that works. oO;

Hello Qev


You may be interested in these links


http://antwrp.gsfc.nasa.gov/cgi-bin/apo ... h?magnetar



Powerful Magnetar Blast from Another Galaxy
http://skytonight.com/news/3310861.html?page=1&c=y

On December 27, 2004, astronomers were stunned when more than a dozen spacecraft picked up a powerful burst of gamma rays from the other side of our galaxy. For two-tenths of a second, it doused Earth with a higher rate of energy than any previous observed object outside the solar system. The culprit was a highly magnetized neutron star — a magnetar — known as SGR 1806–20.

http://www.space.com/scienceastronomy/b ... 50218.html


http://chandra.harvard.edu/photo/2003/v ... tions.html


http://antwrp.gsfc.nasa.gov/apod/ap041223.html

Light from a star that exploded some ten thousand light-years away first reached our fair planet in the year 1181. Now known as supernova remnant 3C58, the region seen in this false-color image glows in x-rays, powered by a rapidly spinning neutron star or pulsar - the dense remains of the collapsed stellar core

http://antwrp.gsfc.nasa.gov/apod/ap960531.html


Introduction to neutron stars
http://www.astro.umd.edu/~miller/nstar.html


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Plasma cosmology------ just because i submit these links does not mean I agree with them. But! they offer information and possible alternatives.
http://www.matter-antimatter.com/plasma_cosmology.htm
http://www.matter-antimatter.com/plasma_cosmology.htm
http://www.matter-antimatter.com/spiral_arms.htm
http://www.plasmaphysics.org.uk/
http://public.lanl.gov/alp/plasma/downl ... ncesII.pdf


If you want more info, let me know

Qev wrote:

harry wrote:There are varies forms of Plasma and not just gas charged particals.
Varies types invovle, neutrons, quarks and so on producing a superfluid.

Look ar plasma science for further info.

I'm pretty sure that all plasmas (in the realm of physics at least) can be defined as an energetic gas of charged particles. Quarks carry charge, just as ionized atoms do. It doesn't even have to be electric charge, just some force charge.

Superfluid neutrons probably generate magnetic fields through their spin; I'm not sure at all how that works. oO;

The atomic force of quarks ...etc is a strong, near field force not capable generating a electro/magnetic field.

Dr. Skeptic wrote:

Qev wrote:

harry wrote:There are varies forms of Plasma and not just gas charged particals.
Varies types invovle, neutrons, quarks and so on producing a superfluid.

Look ar plasma science for further info.

I'm pretty sure that all plasmas (in the realm of physics at least) can be defined as an energetic gas of charged particles. Quarks carry charge, just as ionized atoms do. It doesn't even have to be electric charge, just some force charge.

Superfluid neutrons probably generate magnetic fields through their spin; I'm not sure at all how that works. oO;

The atomic force of quarks ...etc is a strong, near field force not capable generating a electro/magnetic field.

Oh, no, I wasn't suggesting that the color charge on quarks would lead to an EM field, just that a separation of colour charges could be considered a type of plasma. Although separated quarks would lead to an EM field due to the fact that they also carry electric charge.

Hello All

If you do not like links this post will explode in 5 seconds.
These links are for those who want more info.
Again, just because I post these, it does not mean I agree totally with the content. We are moving through an ERA of changing ideas.

Info on electromagnetic jets

[20.06] Coronae and Jet Properties of the Black Hole Candidates Cyg X-1 and GX339-4 Over Many Years and Many Decades in Eddington Flux

http://www.aas.org/publications/baas/v3 ... 04/354.htm

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A Jet is a Jet, Big or Small: Scale Invariance of Black Hole Jets
http://www.mpa-garching.mpg.de/HIGHLIGH ... 308_e.html
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A Scheme to Unify Low-Power Accreting Black Holes - Jet-Dominated Accretion Flows and the Radio/X-Ray Correlation
http://www.citebase.org/abstract?id=oai ... ph/0305335


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The central engine in action
The relativistic jet phenomenon in active galaxies


http://www.humboldt-foundation.de/kosmo ... 05_006.htm

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Neutron Star Imitates Black Hole
http://www.jb.man.ac.uk/news/CircinusX-1/

An international team of Dutch, UK and Australian scientists using the Australia Telescope - a radio-telescope array in New South Wales, Australia - have seen a neutron star spitting out a jet of matter at more than 99.8% of the speed of light. This is the first time such an ultra-relativistic jet has been seen from anything other than a super massive black hole at the heart of a distant galaxy.

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Discovering the physics of extragalactic jets
http://home.physics.ucla.edu/calendar/p ... _05_04.pdf

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This is a repeat

Puny black holes can eject Milky Way's stars
19:21 13 September 2006
NewScientist.com news service
David Shiga

Tiny black holes near the galaxy's centre can fling stars out of the Milky Way at break-neck speeds, a new study suggests. Previously, only the supermassive black hole there was thought to be able to produce these "hypervelocity" stars.

Note the progressive density from neutron star 10^15,,,,,,to quark stars about 10^18 upto 10^25 and preon stars (possible black hole) over and to 10^35. All these create jets and therfore the electromagnetic field is shown to be generated by subatomic particals.

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The Birth of Stars: Herbig-Haro Jets, Accretion and Proto-Planetary Disks
http://www.stsci.edu/stsci/meetings/shst2/ballyj.html

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http://www.spaceref.com/news/viewpr.html?pid=14309

Some of the first data from a new orbiting infrared telescope are revealing that the Milky Way - and by analogy galaxies in general - is making new stars at a much more prolific pace than astronomers imagined

This is quite interesting, the size and density of the core will determine the life span of a new star.
Some stars are born from a molecular cloud (short life) others go through a stage in their evolution, others have their core regivinated by a black hole jet.

Now I'm thinking unconventional

What if the active black holes seeded the core of future stars giving them a high density and a good size for a long life span that would see them through many phases or stages in their evolution.