منابع مشابه
Evaporation of high speed sporadic meteors
Recent measurements conducted at the Arecibo Observatory report high-speed sporadic meteors having velocities near 50 km/s. The results seem to indicate a bimodal velocity distribution in the sporadic meteors (maxima at ∼20 km/s and ∼50 km/s). The particles have a maximum mass of ∼1μg. This paper will present an analysis of the ablation of 1μg meteoroids having velocities of 20, 30, 50, and 70 ...
متن کاملReal-Time Detection of Sporadic Meteors in the Intensified TV Imaging Systems
The automatic observation of the night sky through wide-angle video systems with the aim of detecting meteor and fireballs is currently among routine astronomical observations. The observation is usually done in multi-station or network mode, so it is possible to estimate the direction and the speed of the body flight. The high velocity of the meteorite flying through the atmosphere determines ...
متن کاملPhotoacoustic Sounds from Meteors
Concurrent sound associated with very bright meteors manifests as popping, hissing, and faint rustling sounds occurring simultaneously with the arrival of light from meteors. Numerous instances have been documented with -11 to -13 brightness. These sounds cannot be attributed to direct acoustic propagation from the upper atmosphere for which travel time would be several minutes. Concurrent soun...
متن کاملOn Meteors, Earthworms and Wimps
We study a model of mass redistribution on a finite graph. We address the questions of convergence to equilibrium and the rate of convergence. We present theorems on the distribution of empty sites and the distribution of mass at a fixed vertex. These distributions are related to random permutations with certain peak sets.
متن کاملTunguska genetic anomaly and electrophonic meteors
One of great mysteries of the Tunguska event is its genetic impact. Some genetic anomalies were reported in the plants, insects and people of the Tunguska region. Remarkably, the increased rate of biological mutations was found not only within the epicenter area, but also along the trajectory of the Tunguska Space Body (TSB). At that no traces of radioactivity were found, which could be reliabl...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1957
ISSN: 0074-1809
DOI: 10.1017/s0074180900049482