We believe the bright central object in the galaxy NGC 4261 is only about the size of our solar system. What evidence do we have for this size estimate?
A) This is a direct measurement from the image seen with the HST.
B) We have measured and compared the Doppler shifts for material on the near and far sides of the object.
C) Radiation from this central object fluctuates, and the light can only travel this distance (the size of the solar system) during a typical fluctuation.
D) We estimate the mass of this central object to be 1.2 billion M ? , and this is the Schwarzschild radius that gives nuclear matter density for this mass.
Correct Answer:
Verified
Q65: What is a collapsar?
A)the name given to
Q66: A typical galaxy has a mass of
Q67: What is believed to be the mass
Q68: The mass of the candidate black hole
Q69: What is the relationship between the size
Q71: Theoretically, the mass of a black hole:
A)must
Q72: Theoretically, a black hole can have:
A)any mass
Q73: What is the current status of primordial
Q74: Which of the following was discovered first?
A)Supermassive
Q75: Far outside a black hole, space seems
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents