How can a 100 earth mass black hole in solar orbit be detected?

"How can a 100 earth mass black hole in solar orbit be detected?".

As has already been capably explained en masse; by its enourmous gravitational perterbation upon other bodies in the solar system.

The orbits of the bodies of relatively easy visibility have been historically accurately recorded for many thousands of years. A drunk elephant weighing 100 earth masses floundering about in the solar china shop would have thrown the movement of solar bodies out of whack so much that you, Billy T, would have to buy your astrology ephemeris anew every week at least. I am betting that you rely on your horoscope without such frequent updates.

 

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No. The 100 Earth mass black hole would have a very regular and predictable orbit (No "floundering about" )

As far as need to weekly correct the epheremis, that is NONSENSE - We do not need to do this for Jupiter's effect on the other planets and it is much more massive. (Too lazy to look up but at least 50,000 Earth masses, I think.)

 

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Jupiter is about 300 Earth masses. It's about 1200 times the *volume* of earth, but it's a gas giant, whereas the earth is composed largely of denser materials (iron, for example).

 

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Thanks for the information. - I recalled only that it had roughly1% of solar system mass and guessed much to high what that was.


None the less my point remains - his post was NONSENSE , as unfortunately many of them are.

You and I often disagree on how to project the economic future, but neither is irrational. - I enjoy reading your well informed posts - only recently, in another thread, did I realize your knowledge extends deeply in math as well.

 

Yes.

I have been thinking about this problem for a while Billy, since you posted it.

Wouldn't we see some high energy gamma rays, or something? I think we would have noticed a source of high energy cosmic rays?

 

Billy, we couldn't calculate the trajectories for a flyby of Jupiter or Saturn or Neptune if there was an object in the asteroid belt that was a hundred thousand times more massive than the total mass of the asteroid belt.

http://en.wikipedia.org/wiki/Asteroid_belt

"The total mass of the Asteroid belt is estimated to be 3.0-3.6×1021 kilograms,[2][3] which is 4% of the Earth's Moon."

The mass of the moon is 0.0123 that of the earth, call it a hundredth, and 4% of this is a twenty fifth, call it a tenth for luck and the mass of the asteroid belt is in the order of a thousandth that of the earth.

Somebody check my arithmetic, but Billy, I think NASA might have noticed. Sorry.

 

Certainly true. I even mentioned that a rocket fly by could detect it easily (if it was in that sector - This before learning Janus58 that all planets would show its effect - he cleverly pointed out that with only17 Earth mass the disturbance lead to the discovery on Neptune.)

 

I too thought about the detectability of 2.2 SOLAR MASS, black hole hundreds of AU from the sun several years ago (when writting my book with that aproaching the solar system.) I invented the phrase "micro quasar" to describe the faint light that I expected would eventually be formed as the very rarafied solar wind was converged on it. Until that 2.2 sunmass was much closer, I concluded that there would not even be a "micro quasar" as the ions of the solar wind would not get to high enough density while converging in the gravity field of the BH before vanishing inside its EH. Thus, in my book the approach is first noticed by an astronomer who has been making a life-long careful study of Pluto's orbit. (Because it orbit is inclined, Pluto can best be observed, for many years still, from the Southern Hemisphere and that is where he lives. When all other explainations of his observations failed, he worked out the most likely mass and trajectory, which if correct, will miss Earth by 12 AU but the gravitational impulse will cause a permanent, rapid onset, ice age with every one stuck in Northern Hempisphere dying. He is now so busy looking for gravitational lens effect along his crude trajectory (to try to refine it) thatr he asked his friend a historian to write the book - this puts into style and language anyone can understand (My target reader would never knowing open a science book.)
More on my book, why I wrote it, and how to read for free at web site under my name.

 

How can there be Black Holes of variable mass sizes. The center of it is a singularity; how can one singularity be more massive than another? And after being consumed into the singularity, doesn't visiting mass dissappear?

 

No, because the radius of the black hole goes like twice it's mass. (or half its mass, I can't remember).

 

Huh ???

 

No, black holes conserve mass/energy, charge, angular momentum, and probably a few other properties of their consituents.

 

I think you're going to be inventing new physics if you say that a singularity can conserve anything. Have we changed the difinition of a singularity??

 

true, but charge never can be much as they would tend to "self neutralize" by selectively absobing the charge they are lacking for the near by vacuum pair production. (One of the two simple minded POVs of how Hawkings radiation works.)

 

Billy T; those having far less than your alledged level of education would have to admit that the observed solar system movements through many thousands of years only make sense if there were not an additional previously unseen 100 earth mass elephant also floundering about anywhere in the solar system.

Unless you are willing to admit that you are fighting me, make a post proving your claim that many of my posts are NONSENSE.

 

I think the productive portion of this thread is over.