Different Scenarios of the Formation of Meteor Showers from the Decay of Cometary nuclei

It is known that the meteor showers come from comets decay, but decay simulation shows that the resulting flows should be narrow, under reasonable assumptions on the rates of release of meteoroid particles of cometary nuclei. The size of the actually observed meteor showers cannot even explain the result of a long evolution of particle orbits under the influence of perturbations of the major planets . Proposed mechanism of formation of meteor showers due to the collapse of the parent comet nucleus has more complex scenarios. In particular, it occurs when parent comet nucleus splitting into several fragments and further evolution of the orbits of the fragments in the Earth's gravitational field at close to its passage. The orbit parameters of individual fragments can vary greatly. The resulting meteor shower will be a combination of several narrow meteor showers resulting from decays of individual fragments of the parent comet. The observed "parental" old comet meteor showers should be considered as lived to our time fragments of the parent comet. In the absence of the parent comet, meteor showers only shows its full decay and may not be a reason for the search of the parent body among the asteroids.