Can a Single Galaxy Estimate Provide an Accurate H0 Value?

Thread starter b_o3
Start date Mar 13, 2007
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Galaxy

AI Thread Summary

The discussion revolves around estimating the Hubble constant (H0) using the Milky Way's velocity of 310 km/s as it falls into a galaxy cluster. Participants are prompted to apply Hubble's law, which relates the velocity of a galaxy to its distance from Earth, to derive an H0 value. The conversation seeks input on calculations and methodologies for this estimation. The accuracy of using a single galaxy for such a significant cosmological constant is also questioned. Ultimately, the thread encourages collaboration and sharing of approaches to solve the problem.

Mar 13, 2007

b_o3

can anyone help me out with this:

Assuming that our milky way is falling into this cluster with a velocity of 310 km/s due to gravitational attraction , estimate a value for H0 (in km s^ -1 Mpc^-1) using this single galaxy.

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Mar 13, 2007

Kurdt

Staff Emeritus

Science Advisor

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What is your attempt? Do you know Hubble's law?

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