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Studies of stellar dynamics in the active galaxy NGC 3115¹1 have revealed a central black-hole mass of Man~9.2-10 M. Given that the velocity dispersion is 278 km s, compute the radius of the sphere of influence of the central black hole. NGC3115 has a distance of 9.7 Mpc. What angle does the sphere of influence subtend here on Earth?

Studies of stellar dynamics in the active galaxy NGC 3115¹1 have revealed a central black-hole mass of Man~9.2-10 M. Given that the velocity dispersion is 278 km s, compute the radius of the sphere of influence of the central black hole. NGC3115 has a distance of 9.7 Mpc. What angle does the sphere of influence subtend here on Earth?

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83 Sphere of influence Studies of stellar dynamics in the active galaxy NGC 3115¹ have revealed a central black-hole mass of Man~9.2-10 M. Given that the velocity dispersion is 278 km s, compute the radius of the sphere of influence of the central black hole. NGC3115 has a distance of 9.7 Mpc. What angle does the sphere of influence subtend here on Earth?
Transcribed Image Text:83 Sphere of influence Studies of stellar dynamics in the active galaxy NGC 3115¹ have revealed a central black-hole mass of Man~9.2-10 M. Given that the velocity dispersion is 278 km s, compute the radius of the sphere of influence of the central black hole. NGC3115 has a distance of 9.7 Mpc. What angle does the sphere of influence subtend here on Earth?
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