What can you never know about a black hole quizlet?

What can you never know about a black hole quizlet?

equal to the speed of light. Which of the following can you never know about a black hole? The elements of the material that has fallen in. Neutron stars have densities roughly the same as that of the atomic nucleus.

Why don t all supernova remnants contain pulsars?

There are several reasons why most supernova remnants do not contain visible pulsars. Perhaps the original pulsar was ejected because there was a recoil from an asymmetrical explosion, or the supernova formed a black hole instead of a pulsar, or the beam of the rotating pulsar does not sweep past the solar system.

Why does our theory predict that neutron stars will spin rapidly?

We expect neutron stars to spin rapidly because they conserve angular momentum.

Do all massive star supernovae leave behind black holes as remnants?

True. All massive-star supernovae leave behind black holes as remnants.

Why can we not detect black holes?

Black holes have gravitational fields so strong that even light cannot escape, so they are defined by the shell of a black, featureless sphere called an event horizon. But the holes can nevertheless be seen. As they consume matter that strays too close, they squeeze it into a superheated disk of glowing gas.

Why is it difficult to observe black holes?

Black holes are difficult to observe directly, since no light can escape from within the event horizon. Fortunately, when matter falls into a black hole, it becomes superheated and produces an intense source of light before it crosses the horizon.

What keeps pulsars from collapsing?

Pulsars are kept from collapsing by neutron degeneracy pressure.

Why was it very rare to see a supernova in an elliptical galaxy?

Supernova explosions of massive stars are common in spiral galaxies like the Milky Way, where new stars are forming all the time. They are almost never seen in elliptical galaxies where star formation has nearly ceased. As a result, astronomers were surprised to find a young-looking supernova in an old galaxy.

Is Silver created in a supernova?

Rare heavy metals like silver and gold, however, need the most extreme stellar environments to form—found only during the explosions of massive stars, or supernovae.

Do black holes spin faster than neutron stars?

Over time, the radiation streaming from the neutron star strips away its angular momentum, and it slows down. Black holes can spin even faster than that.

Are neutron stars that have magnetic fields 100 times stronger than the average neutron star?

The curved lines depict the star’s magnetic field, which can average a thousand trillion times stronger than the magnetic field of Earth and 1,000 times stronger than an ordinary neutron star.

When we find neutron stars that are spinning rapidly they are called?

Pulsars are rotating neutron stars observed to have pulses of radiation at very regular intervals that typically range from milliseconds to seconds. Pulsars have very strong magnetic fields which funnel jets of particles out along the two magnetic poles.

Did a star come out of a black hole?

The delay between the cosmic meal and the blast of plasma that followed surprised astronomers, and they aren’t sure why it took so long. In 2018, astronomers saw evidence of a black hole more than 650 million light years away ripping apart a star in what’s called a tidal disruption event.

Can black holes explode?

Answer: Black holes don’t really “explode”, which implies that they generate a large outburst of energy which ultimately tears them apart, but they do have outbursts (also, unfortunately, referred to as “explosions”).

Can a star survive a black hole?

Astronomers Have Discovered a Star That Survived Nearly Being Swallowed by a Black Hole. When black holes swallow down massive amounts of matter from the space around them, they’re not exactly subtle about it.

What is unusual about a black hole?

Black holes are some of the strangest and most fascinating objects in space. They’re extremely dense, with such strong gravitational attraction that not even light can escape their grasp. The Milky Way could contain over 100 million black holes, though detecting these gluttonous beasts is very difficult.

What are some unanswered questions about black holes?

Black Hole Questions

• Are there different types of black holes?
• Can you go fast enough to get enough mass to become a black hole?
• Does every black hole contain a singularity?
• How can there be anything left in the universe? …
• How can you tell a black hole made out of antimatter from a black hole made out of matter?

What are unanswered questions about black holes?

Let’s dive in to find out the unanswered questions about these objects.

• What is a black hole? …
• What is Event Horizon in a black hole? …
• How Are black holes formed? …
• Do black holes really exist? …
• Who discovered black holes? …
• What happens if you fall into a black hole? …
• Which is the nearest black hole to Earth?

What are 3 interesting facts about black holes?

10 Fun Facts About Black Holes

• You Can’t Directly See a Black Hole. …
• Our Milky Way Probably Has a Black Hole. …
• Dying Stars Lead to Stellar Black Holes. …
• There are Three Categories of Black Holes. …
• Black Holes Are Funky. …
• The First Black Hole Wasn’t Discovered Until X-Ray Astronomy was Used.