Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.189..225j&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 189, Oct. 1979, p. 225-232. Research supported by the National Research
Astronomy and Astrophysics
Astronomy
7
Astronomy, Meteor Trails, Perseid Meteoroids, Television Systems, Comets, Ejecta, Explosions, Gravitational Effects
Scientific paper
Observations with a sensitive television system of the 1974 Perseid meteor shower are described with particular attention paid to the diffuseness of the radiant and the trail lengths. The spread in the radiant of about 3 deg, when taken together with the photographic meteor data, strongly supports the theory that the radiant diffuseness is mainly due to explosive ejection of material from the parent comet. By taking into account gravitational perturbations, an age close to 1000 yr is obtained for the stream. The vertical trail lengths, which have a mean of 8.5 km, show a large scatter, indicating progressive fragmentation of the meteoroid.
Jones Jason J.
Sarma Teddy
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