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Are black holes detected by the X-rays they emit?

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It is possible to detect black holes by the X-rays emitted at the event horizon. That's one way to "see" them. It's tricky, but the tools of the modern astronomer are nothing short of astonishing. Let's take a walk.

Lots of times we think of telescopes as instruments through which bleery-eyed investigators peer for hours on end. It ain't like that now. In addition to the optical telescopes we know of (which now have CCD imaging equipment at the focal point and computers to look at the pictures), we have "eyes" pointed at the sky that can see across the electromagnetic spectrum, including X-rays.

The X-rays generated at the event horizon of a black hole appear as the result of the acceleration of gases into the gravity well. And we have things like the Chandra X-ray Observatory to see such things. Chandra launched in the summer of '99, and by the 2000's, stunning images were beginning to amaze observers. Including things like X-ray emission from Sagittarius A's supermassive black hole, which is at the center of the Milky Way.
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How can a black hole emit X-rays?

Answer X-rays aren't emitted by the black hole itself. Rather, gases that are accelerated at the event horizon generate X-rays. In the accretion disc, material is collecting

How do astronomers detect black holes?

We have two indirect ways of detecting black holes. First, we can  detect them based on the influence their gravity has on nearby  objects. Second, matter falling into a bla

Ways you can detect black holes?

  The way stars and dust react with the black hole(they start to spin around really fast and give off heat x-rays,infared,etc.)

How can you detect a black hole?

Two ways to detect black holes 1. If you see stars or dust particles circling around empty spot. There the black hole is 2. If matter falls into a black hole, it gets shred

How can astronomers detect where black holes are?

Black holes are invisible, but astronomers can detect them because they distort light and it sucks everything in, so when you see many many stars disappear, then that must be

How do black holes emit energy?

The mechanism by which black holes can emit energy (and thus, per matter-energy equivalence, decrease in mass) was proposed famously by Stephen Hawking who realized black hole

How can a black hole be detected if it cannot emit light?

If there exits a black hole, its surrounding stars form strange curves like as if the stars are at the end border of a magnifine glass. Its because of the gravity of the black

How do astronomers detect where the black holes are?

Since black holes allow nothing including light to escape,  detection needs to be indirect. Common methods to detect black  holes include the observation of the effects of t

What was the first Black hole detected?

Several objects that we NOW know to be black holes -- beginning with the Milky Way -- have been "detected" for a long time. The first object that was universally accepted as a

What telescope can detect black holes?

Since black holes aren't directly visible, effects they cause have  to be observed. For example, optical telescopes can detect  gravitational lensing when distant objects su