This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Describe how gravitational lensing works. What can it tell us about the galaxy that is doing the ... (Read 20 times)

danielfitts88

  • Hero Member
  • *****
  • Posts: 535
on: Jul 27, 2018
Describe how gravitational lensing works. What can it tell us about the galaxy that is doing the lensing? How is lensing valuable to the study of dark matter?
 
  What will be an ideal response?

Question 2

Which of the following is NOT a planet visible to the naked eye?
 
  A) Saturn
  B) Neptune
  C) Mercury
  D) Jupiter


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

vish98

  • Sr. Member
  • ****
  • Posts: 326
Reply #1 on: Jul 27, 2018
Answer to Question 1

Gravitational lensing occurs when a nearby object (normally a galaxy) bends the light of a distant object (often a quasar), causing two or more images of the distant object to be seen. The lensing galaxy can have its mass calculated based on the amount by which it bends light. This lets us study dark matter by comparing the lensing galaxy's luminous mass with its gravitational mass.

Answer to Question 2

B


danielfitts88

  • Member
  • Posts: 535
Reply 2 on: Jul 27, 2018
:D TYSM

kthug

  • Member
  • Posts: 332
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Gravitational Lensing of Extremely Distant Galaxies Gravitational Lensing of Extremely Distant Galaxies
Giant Elliptical Galaxy M87 Giant Elliptical Galaxy M87
Gravitational Force Due to a Distribution of Mass Problem 1 Gravitational Force Due to a Distribution of Mass Problem 1
Gravitational Force Due to a Distribution of Mass problem 2 Gravitational Force Due to a Distribution of Mass problem 2
Describe the Conceptual Forecasting Framework in your own words. Describe the Conceptual Forecasting Framework in your own words.
IMAGES THAT DESCRIBE CELLULAR PARTS IMAGES THAT DESCRIBE CELLULAR PARTS
Video: Types of Shock (Part 2 of 2)

For a complete list of videos, visit our video library