Equation of State of a Strongly Interacting Atomic Fermi Gas

We present absorptive in-situ imaging of an ultracold Fermi gas of Li-6 in the unitary regime. The low noise density distribution in an external potential directly reveals the Equation of State under the local density approximation. Regions of low density allow us to extract the chemical potential and the temperature using the virial expansion of the equation of state. The experimental results are compared to recent Monte-Carlo calculations.