Radar Detection of the Nucleus and Coma of Comet Hyakutake (C/1996 B2)

Autor:	Raymond F. Jurgens, R. A. Cormier, Paul W. Chodas, Lance A. M. Benner, David L. Mitchell, Randy Rose, K. D. Rosema, Michael Thomas, Martin A. Slade, D. Kelley, D. Choate, D. K. Yeomans, J. K. Harmon, Jon D. Giorgini, Steven J. Ostro, R. Winkler
Rok vydání:	1997
Předmět:	Physics Multidisciplinary Backscatter business.industry Comet Coma (optics) Astrophysics Radar detection Radar observations medicine.anatomical_structure Optics medicine Goldstone Deep Space Communications Complex business Nucleus
Zdroj:	Science. 278:1921-1924
ISSN:	1095-9203 0036-8075
DOI:	10.1126/science.278.5345.1921
Popis:	Radar observations of comet Hyakutake (C/1996 B2) made at the Goldstone Deep Space Communications Complex in California have detected echoes from the nucleus and from large grains in the inner coma. The nucleus of this bright comet was estimated to be only 2 to 3 kilometers in diameter. Models of the coma echo indicate backscatter from porous, centimeter-size grains ejected anisotropically at velocities of tens of meters per second. The radar observations suggest that a comet's activity may be a poor indicator of its size and provide evidence that large grains constitute an important component of the mass loss from a typical active comet.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::60c4d6b37ec6e73343a348e45c76378f https://doi.org/10.1126/science.278.5345.1921 Zobrazit plný text záznamu