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

Author Question: What evidence do we have that pulsars are neutron stars? What will be an ideal ... (Read 95 times)

robinn137

  • Hero Member
  • *****
  • Posts: 544
What evidence do we have that pulsars are neutron stars?
 
  What will be an ideal response?

Question 2

Acrux has an MV = 4.2 and an mV = 0.81 . Therefore, Acrux is actually brighter than we perceive it to be.
 
  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

juiceman1987

  • Sr. Member
  • ****
  • Posts: 316
Answer to Question 1

Pulsars could not be ordinary stars. A normal star, even a small white dwarf, is much too big to pulse that fast. Nor could a star with a hot spot on its surface spin fast enough to produce the pulses. Even a small white dwarf would fly apart if it spun 30 times a second. The pulses last only about 0.001 second, placing an upper limit on the size of the object producing the pulse. If a white dwarf blinked on and then off in that interval, you would not see a 0.001-second pulse. That's because the point on the white dwarf closest to Earth would be about 6000 km closer to you, and light from that spot would arrive 0.02 s before the light from the bulk of the white dwarf. As a result its short blink would be smeared out into a longer pulse. Only a neutron star is small enough to be a pulsar.

Answer to Question 2

True




robinn137

  • Member
  • Posts: 544
Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it


blakcmamba

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

For a complete list of videos, visit our video library