An AGN is observed to double in brightness over 8.6 days and then to grow dim...

Question

Question

$For the majority of galaxies astronomers observe, the light travel time is less than a billion years. This is only a fraction$

science physics

Answer 1

Answer #1

(First answer)

Calculate the diameter aboout 1200 AU or roughly 10 times the diameter of the system.

Diameter < (c* Δt) ................ (1)

Calculate the value of Δt ,

Δt = (8.6 days)(24 h/day)(3600 s/h)

= 743040 s

Use equation (1)

Diameter < (3*10^5 km/s)( 743040 s )

= 2.23*10^11 km

= ( 2.23*10^11 km )(1 AU/1.496*10^8)

= 1490.05 AU

Answer 2

Similar Homework Help Questions

An AGN is observed to double in brightness over 7.7 days and then to grow dim...

An AGN is observed to double in brightness over 7.7 days and then to grow dim again in the next 7.7 days. What is an upper limit to the probable size of the AGN? ______ AU
For the majority of galaxies astronomers observe, the light travel time is less than a billion...

For the majority of galaxies astronomers observe, the light travel time is less than a billion years. This is only a fraction of the Sun's age, and therefore we do not expect to find many differences in the galaxies' properties due to their age. What would the redshift be for a galaxy that we are seeing as it was 904 million years ago? V/c = ________
For the majority of galaxies astronomers observe, the light travel time is less than a billion...

For the majority of galaxies astronomers observe, the light travel time is less than a billion years. This is only a fraction of the Sun's age, and therefore we do not expect to find many differences in the galaxies' properties due to their age. What would the redshift be for a galaxy that we are seeing as it was 904 million years ago? Hint: Find the recessional speed using Hubble's law. V/c = ________

choose correct answer. no explanation needed QUESTION 10 How do astrophysicists account for neutrino emission from...

choose correct answer. no explanation needed QUESTION 10 How do astrophysicists account for neutrino emission from the Sun? Solar flares create neutrinos with very energetic magnetic fields. Convection releases neutrinos, which random walk through the radiation zone. Fission in the Sun's core creates neutrinos when protons turn into neutrons. The annihilation of positrons and electrons in the core produces neutrinos. Fusion in the Sun's core creates neutrinos when protons turn into neutrons, QUESTION 11 How does the interstellar medium impact...