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We report results from searches for anisotropic stochastic gravitational-wavebackgrounds using data from the first three observing runs of the Advanced LIGOand Advanced Virgo detectors. For the first time, we include Virgo data in ouranalysis and run our search with a new efficient pipeline called {\tt PyStoch}on data folded over one sidereal day. We use gravitational-wave radiometry(broadband and narrow band) to produce sky maps of stochasticgravitational-wave backgrounds and to search for gravitational waves from pointsources. A spherical harmonic decomposition method is employed to look forgravitational-wave emission from spatially-extended sources. Neither techniquefound evidence of gravitational-wave signals. Hence we derive 95\%confidence-level upper limit sky maps on the gravitational-wave energy fluxfrom broadband point sources, ranging from $F_{\alpha, \Theta} < {\rm (0.013 -7.6)} \times 10^{-8} {\rm erg \, cm^{-2} \, s^{-1} \, Hz^{-1}},$ and on the(normalized) gravitational-wave energy density spectrum from extended sources,ranging from $\Omega_{\alpha, \Theta} < {\rm (0.57 - 9.3)} \times 10^{-9} \,{\rm sr^{-1}}$, depending on direction ($\Theta$) and spectral index($\alpha$). These limits improve upon previous limits by factors of $2.9 -3.5$. We also set 95\% confidence level upper limits on the frequency-dependentstrain amplitudes of quasimonochromatic gravitational waves coming from threeinteresting targets, Scorpius X-1, SN 1987A and the Galactic Center, with bestupper limits range from $h_0 < {\rm (1.7-2.1)} \times 10^{-25},$ a factor of$\geq 2.0$ improvement compared to previous stochastic radiometer searches.

Search for anisotropic gravitational-wave backgrounds using data from Advanced LIGO and Advanced Virgo's first three observing runs