Estimate how long a galaxy in the Coma cluster would take to travel from one side...
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Estimate how long a galaxy in the Coma cluster would take to travel from one side of the cluster to the other. Assume that the galaxy moves with a constant speed equal to the cluster's radial velocity dispersion. How does this compare with the Hubble time, t#? What can you conclude about whether the galaxies in the Coma cluster are gravitationally bound? Estimate how long a galaxy in the Coma cluster would take to travel from one side of the cluster to the other. Assume that the galaxy moves with a constant speed equal to the cluster's radial velocity dispersion. How does this compare with the Hubble time, t#? What can you conclude about whether the galaxies in the Coma cluster are gravitationally bound?
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Hubble time is 1 Ho The velocity is tH v Q Hor then H O The diameter is ... View the full answer
Related Book For
Principles of heat transfer
ISBN: 978-0495667704
7th Edition
Authors: Frank Kreith, Raj M. Manglik, Mark S. Bohn
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