Narayan, RameshMedvedev, Mikhail V.2019-09-222001Narayan, Ramesh, and Mikhail V. Medvedev. 2001. “Thermal Conduction in Clusters of Galaxies.” The Astrophysical Journal 562 (2): L129–32. https://doi.org/10.1086/338325.0004-637X1538-4357http://nrs.harvard.edu/urn-3:HUL.InstRepos:41384940We estimate the thermal conductivity of a weakly collisional magnetized plasma with chaotic magnetic field fluctuations. When the fluctuation spectrum extends over two or more decades in wavevector, we find that thermal conduction is very efficient; the conduction coefficient is only a factor of similar to5 below the classical Spitzer estimate. We suggest that conduction could play a significant role in cooling flows in clusters of galaxies.en-USJournal Article2019-09-2210.1086/338325