منابع مشابه
Large meteoroids produced by comet 7P/Pons-Winnecke
By using high-sensitivity CCD video devices we have analyzed the activity of the June Bootid (JBO) meteor shower. This monitoring has provided an opportunity to analyze the physico-chemical properties of large meteoroids produced by comet 7P/Pons-Winnecke. The analysis of a fireball produced by a meteoroid with a mass of about 257 kg is presented here.
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During more than 3 years (August 1996–October 1999) monitoring of a 40 • × 40 • sky region around the Galac-tic Centre by the Wide Field Cameras on board BeppoSAX, a total of 8 type-I bursts have been detected from a sky position consistent with that of 4U 1812−12, a likely neutron-star low-mass X-ray binary. We present the results of a detailed study of the bursts of 4U 1812−12, about 15 years...
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For the past five years, rare Leonid meteor storms offered unique access to cometary dust by spectacular manifestations of recently ejected dust grains, which could be observed by exceptional meteor observing techniques. The final storms, those of November 19, 2002, measured the dust distribution in a comet dust trail far from the position of the comet itself. The measured spatial and particle ...
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Arecibo radar imagery of Comet 8P/Tuttle reveals a 10-km-long nucleus with a highly bifurcated shape consistent with a contact binary. A separate echo component was also detected from large (>cm-size), slow-moving grains of the type expected to contribute to the Ursid meteor stream. ! 2009 Elsevier Inc. All rights reserved.
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The nucleus of Comet 2P/Encke was detected with the Arecibo radar during the close approach of November, 2003, making this the first comet to yield radar detections at two different apparitions. Although the measured radar cross section of 1.0 km2 was close to that obtained in 1980, the Doppler bandwidth was nearly four times larger. Most of this bandwidth difference can simply be attributed to...
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ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 1884
ISSN: 0004-6337,1521-3994
DOI: 10.1002/asna.18841100703