Mass distribution of Perseid meteoroids

Mathematical modelling of the Geminid meteoroid stream

“…It was shown that the structure of a model stream of collisional (Ryabova 1989b), or eruptive (Bel'kovich & Ryabova 1989) origin does not agree with observations. The activity profile for the Geminid shower has a special shape (Ryabova 2001a,b), and the shape is ensured by a cometary model of the stream generation.…”

Mesosphere light scattering depolarization during the Perseids activity epoch by wide-angle polarization camera measurements

“…Different types of observations -visual (Brown andRentdel, 1996, Arlt andBuchmann, 2002, and many others) and radar (Šimek and Pecina, 1999) show that Perseids visual maximum at August, 12 th (solar longitude 140°) is contributed by the bright meteors only. Long-term observational analysis (Bel'kovich and Ishmukhametova, 2006) points out that the profile of low-mass fraction (about 10 -4 g) of Perseids activity has a bimodal structure with two maxima around solar longitudes 137° and 141° (see Fig.3). These maxima become more and more significant for smaller particles.…”

Meteoroid streams: mathematical modelling and observations

“…), there is astronomical selection, i.e. the alteration of the meteoroid flux in the gravitational field of a moving planet (Bel'kovich 1983;Bronshten 1983;Andreev 1984;Zabolotnikov (1984)). It should also be taken into account.…”