text: 220,104,1371771163504951296,2813168019,EGO & the Virgo Collaboration,"A paper published today on @arxiv by the Virgo, @LIGO and @KAGRA_PR Collaborations, based on data from the first three observing runs of the Virgo and LIGO detectors, sets new constraints on anisotropies of stochastic gravitational wave backgrounds. <LINK> <LINK> Different GW backgrounds are generated from the combination of all the too faint merger signals, that our detectors are not able to individually resolve, or from early Universe phenomena, such as phase transitions and primordial black hole mergers. Hence observing... direction-dependent features in the GW backgrounds could give us insights into history of the early universe and matter distribution of the nearby one. This research didn't find any significant evidence for a gravitational-wave background, but it sets more stringent upper limits.",https://arxiv.org/abs/2103.08520,"We report results from searches for anisotropic stochastic gravitational-wave backgrounds using data from the first three observing runs of the Advanced LIGO and Advanced Virgo detectors. For the first time, we include Virgo data in our analysis 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 stochastic gravitational-wave backgrounds and to search for gravitational waves from point sources. A spherical harmonic decomposition method is employed to look for gravitational-wave emission from spatially-extended sources. Neither technique found evidence of gravitational-wave signals. Hence we derive 95\% confidence-level upper limit sky maps on the gravitational-wave energy flux from 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-dependent strain amplitudes of quasimonochromatic gravitational waves coming from three interesting targets, Scorpius X-1, SN 1987A and the Galactic Center, with best upper 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