If the active core of a galaxy contains a black hole of 106 M, what will the orbital period be for matter orbiting the black hole at a distance of 0.42 AU?  Hint: Use the formula for circular velocity

Q: If the active core of a galaxy contains a black hole of 106 MSun , what will the orbital distance be…

A: Given: The mass of the black hole is 106 MSun. The orbital period is 1 hr.

Q: A Type la supernova explodes in a galaxy at a distance of 6.10×107 light-years from Earth. If…

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Q: You observe a star orbiting in the outer parts of a galaxy. The distance to this galaxy is known,…

A: Given, The distance of the star from the center of the galaxy: r=19 kpc=19×3.086×1019 m Speed of the…

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Q: If the active core of a galaxy contains a black hole of 10°M, (1 million solar masses), what will…

A: mass of black hole, M=106 MΘ=106*2*1030=2*1036 Kg radius of orbit,r=0.33 Au=0.33*1.5*1011=0.495*1011…

Q: You observe the H-alpha line of Hydrogen in a distant galaxy to have a wavelength of 918.4  nm. What…

A: The observed wavelength of a H-α line is 656.28nm. The radial velocity is given by

Q: If the active core of a galaxy contains a black hole of 106 Me, what will the orbital period be for…

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Q: What is the orbital period (in s) of a bit of matter in an accretion disk that is located 6 ✕ 105 km…

A: Write the given values with the suitable variables. r=6×105 km=6×108 mM=99Mo=992×1030 kg=198×1030 kg…

Q: A galaxy with a spherically symmetric distribution of matter has a mass density profile of the type…

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Q: n(r) = nge where r represents the distance from the centre of the Galaxy, Ro is the distance of the…

A: (a)As we have to find the maximum distance by the help of the relation of absolute and apparent…

Q: The density profile of a galaxy's extended dark matter halo is given in the provided image. r0 and…

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Q: The Tully-Fischer method relies on being able to relate the mass of a galaxy to its rotation…

A: Given: Distance of galactic center of Milky way r = 50 kpc r=50kpc3.086×1019m1kpc=154.3×1019m.…

Q: A Cepheid variable in the Andromeda galaxy has a period of 22 days and a mean apparent magnitude of…

A: Part (a): The mean apparent magnitude (denoted by m) of the Cepheid variable is given as 19.5, and…

Q: You observe the H-beta line of Hydrogen in a distant galaxy to have a wavelength of 558.9 nm. What…

A: The equation for the radial velocity of the galaxy is,

Q: A black hole (m = 2.90 x 10^9 Ms) sits in the middle of the M87 galaxy. Calculate its gravitational…

A: mass of black hole = 2.90×109 MsMs = 1.99×1030 kg

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Q: The Sun has an orbital speed of about 220 kms−1 around the centre of the Galaxy, whose distance is…

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Q: If active core of a galaxy contains a black hole of 10^6 M, what will the orbital period be for…

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Q: What is the orbital period of a bit of matter in an accretion disk that is located 8 x 10^5 km from…

A: The radius of the black hole is, The mass of the black hole is,

Q: You observe a star orbiting in the outer parts of a galaxy. The distance to this galaxy is known,…

A:

Q: Pretend that galaxies are spaced evenly, 7.0 Mpc apart, and the average mass of a galaxy is 1.0 ✕…

A: The average density of matter in the universe is given by

Q: You observe a star orbiting in the outer parts of a galaxy. The distance to this galaxy is known,…

A: Given, Distance, R=19kpcR=19×3.08×1019mR=58.52×1019m Speed, v=382×103m/s The velocity of the star is…

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A: Given Velocity of gas = u = 250 km/s = 250000 m/s Radius of orbit from the center = r = 35kpc = 35 ×…

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Q: A galaxy's rotation curve is a measure of the orbital speed of stars as a function of distance from…

A: A flat rotation curve means that the mass will vary linearly with the radius. It can be written as,…

Q: Figure 2 shows the “"rotation curve" of NGC 2742. It plots the “radial velocity (V)" (how fast…

A: As per the given instructions, let the evenly-spaced five masses on the redshifted side be as…