Determination of miscalibrated polarization angles from observed CMB and
  foreground $EB$ power spectra: Application to partial-sky observation
  We study a strategy to determine miscalibrated polarization angles of cosmic
microwave background (CMB) experiments using the observed $EB$ polarization
power spectra of CMB and Galactic foreground emission. We apply the methodology
of Minami et al.(2019) developed for full-sky observations to ground-based
experiments such as Simons Observatory. We take into account the $E$-to-$B$
leakage and $\ell$-to-$\ell$ covariance due to partial sky coverage using the
public code NaMaster. We show that our method yields an unbiased estimate of
miscalibrated angles. Our method also enables simultaneous determination of
miscalibrated angles and the intrinsic $EB$ power spectrum of polarized dust
emission when the latter is proportional to $\sqrt{C_\ell^{EE}C_\ell^{BB}}$ and
$C_\ell^{BB}$ is proportional to $C_\ell^{EE}$.
