Im trying to calcuate the energy output of Saigtarius A star if it were to accrete material at the same rate as a typical Seyfert Galaxy which I understand to be about 1 solar mass per year (correct?). Im getting an answer that looks way too low. As I understand it we should get a number something like 10^37(adsbygoogle = window.adsbygoogle || []).push({});

Here are my calculations:

The radius of Sagittarius A star, the black hole at the centre of our galaxy is a number I couldn’t find. However it’s mass is easily available: 3.6 mio solar mass

We can compute the radius using the Schwarzschild formula

Rs=2GM/c^2

Where Rs is the Schwarzschild radius

G is the gravitational constant = 6.67*10^-11

M is the mass in kg is 7.2*10^36

C is the speed of light 3*10*8

So we have 2*6.67*10-11*7.2*10^36/9*10^16

= 1.07*10^10

No we can calculate the accretion energy using

GM/R = 6.67*10^-11*2*10^30/1.0*10^10

=1.25*10^10

Mauybe the radisu of Sag A* is much alrgher than normal AGn, or Ive made a mistake somehwere. Any ideas?

**Physics Forums - The Fusion of Science and Community**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Calculating the output of Seyferrt Galaxy

Can you offer guidance or do you also need help?

Draft saved
Draft deleted

Loading...

Similar Threads for Calculating output Seyferrt |
---|

B Calculating Weight and mass of entire black hole |

I Calculating the incidence angle of the Sun |

I Calculate Voyager trajectory using JPL data |

A Calculating the Altitude of a Nominal Burst |

**Physics Forums - The Fusion of Science and Community**