This topic contains a solution. Click here to go to the answer

Author Question: What are the physical properties neutron stars, and how does theory predict these properties? ... (Read 179 times)

anshika

  • Hero Member
  • *****
  • Posts: 510
What are the physical properties neutron stars, and how does theory predict these properties?
 
  What will be an ideal response?

Question 2

Aristotle believed that objects falling to the ground fall at a constant rate of speed.
 
  a. True
  b. False
  Indicate whether the statement is true or false



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

CAPTAINAMERICA

  • Sr. Member
  • ****
  • Posts: 325
Answer to Question 1

Neutron stars have hot surfaces, spin rapidly, and have strong magnetic fields. Neutron stars also radiate most of their energy in the form of X-rays and gamma rays, but do not have a high luminosity.

Theory states that as gas particles fall inward, they transfer their gravitational energy to thermal energy resulting in a hot surface. The sudden collapse of the core of a massive star to the size of a neutron star should also heat the surface to about a trillion degrees.

The principle of conservation of angular momentum predicts that neutron stars will spin rapidly. All stars rotate because they form from swirling clouds of interstellar matter. As the star collapses, it must rotate faster to conserve angular momentum.

It is predicted that a neutron star should have a powerful magnetic field. The gas of a star is ionized, so the magnetic field of the star cannot move easily relative to the gas. When the star collapses, the magnetic field is squeezed into a smaller volume. This increases the strength of the magnetic field by as much as a billion times.

The surface of a neutron star is a very hot blackbody, so it is predicted that the surface will radiate in high-energy wavelength bands  X-ray and gamma ray.

Lastly, the surface is small, so the total luminosity is not great.

Answer to Question 2

True




anshika

  • Member
  • Posts: 510
Reply 2 on: Jul 27, 2018
Gracias!


meow1234

  • Member
  • Posts: 333
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

For a complete list of videos, visit our video library