X-ray and SZ constraints on the properties of hot CGM
  We use observations of stacked X-ray luminosity and Sunyaev-Zel'dovich (SZ)
signal from a cosmological sample of $\sim 80,000$ and $104,000$ massive
galaxies, respectively, with $ 10^{12.6}\lesssim M_{500} \lesssim 10^{13}
M_{\odot}$ and mean redshift, \={z} $\sim$ 0.1 - 0.14 to constrain the hot
Circumgalactic Medium (CGM) density and temperature. The X-ray luminosities
constrain the density and hot CGM mass, while the SZ signal helps in breaking
the density-temperature degeneracy. We consider a simple power-law density
distribution ($n_e \propto r^{-3\beta}$) as well as a hydrostatic hot halo
model, with the gas assumed to be isothermal in both cases. The datasets are
best described by the mean hot CGM profile $\propto r^{-1.2}$, which is
shallower than an NFW profile. For halo virial mass $\sim 10^{12}$ - $10^{13}
M_{\odot}$, the hot CGM contains $\sim$ 20 - 30\% of galactic baryonic mass for
the power-law model and 4 - 11\% for the hydrostatic halo model, within the
virial radii. For the power-law model, the hot CGM profile broadly agrees with
observations of the Milky Way. The mean hot CGM mass is comparable to or larger
than the mass contained in other phases of the CGM for $L^*$ galaxies.
