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The arrival directions of extensive air showers by Yakutsk data are analyzed. We found that fluxes of particles (clusters) with ultrahigh energy from the side of the galactic plane and the plane of Local group of Virgo galactic correlate with pulsars of the galactic plane. It is shown that the all 3 particles with the energy E > 10 20 eV by Yakutsk data correlate with a nearest pulsars.

The arrival directions of cosmic rays with energies above 10 19 eV using data from EAS world arrays are considered. The problem of searching for clusters in arrival directions of the extensive air shower arrays at Yakutsk, Haverah Park, Volcano Ranch, Sydney and Akeno are examined. Four cluster directions are identified which are believed to be significant: these clusters do not lie in the direction of the Galactic Plane.

A possible correlation between the arrival directions of ultrahigh energy cosmic rays by using EAS array data and point galactic sources of radio and gamma radiations, pulsars, has been considered. At mean cosmic rays energy of ~ 10 19 eV, a correlation between their arrival directions and pulsars located in the direction of the Local Arm of the Galaxy is found. According to our estimations, the chance probability is 2 × 10 −4 . The obtained results are discussed.

The clusters (doublets) in ultrahigh energy cosmic rays are considered based on Yakutsk and AGASA extensive air shower array data. It is discussed a problem of origin clusters. It is found that arrival directions of the clusters can point to a cosmic rays anisotropy. As a result of analysis for cluster arrival directions, the conclusion on the composition and origin of ultrahigh energy cosmic rays been made.