A catalog of optical to X-ray spectral energy distributions of z~2
  quasars observed with Swift. I: First results
  We present the Swift optical to X-ray spectral energy distributions (SEDs) of
44 quasars at redshifts z~2 observed by Swift, part of a larger program to
establish and characterize the optical through X-ray SEDs of moderate-redshift
quasars. Here we outline our analysis approach and present preliminary analysis
and results for the first third of the full quasar sample. Not all quasars in
the sample are detected in X-rays; all of the X-ray detected objects so far are
radio loud. As expected for radio loud objects, they are X-ray bright relative
to radio-quiet quasars of comparable optical luminosities, with an average
alpha_ox = 1.39 +/- 0.03 (where alpha_ox is the power-law slope connecting the
monochromatic flux at 2500 Ang and at 2 keV), and display hard X-ray spectra.
We find integrated 3000 Ang - 25 keV accretion luminosities of between
0.7*10^(46) erg s^(-1) and 5.2*10^(47) erg s^(-1). Based on single-epoch
spectroscopic virial black hole mass estimates, we find that these quasars are
accreting at substantial Eddington fractions, 0.1 \le L/LEdd \le 1.
