Three years of Ulysses dust data: 2005 to 2007

Krueger H, Dikarev V, Anweiler B, Dermott SF, Graps AL, Gruen E, Gustafson BA, Hamilton DP, Hanner MS, Horanyi M, Kissel J, et al. (2010)
PLANETARY AND SPACE SCIENCE 58(7-8): 951-964.

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Abstract
The Ulysses spacecraft has been orbiting the Sun on a highly inclined ellipse (i = 79 degrees, perihelion distance 1.3 AU, aphelion distance 5.4 AU) since it encountered Jupiter in February 1992. Since then it has made almost three revolutions about the Sun. Here we report on the final three years of data taken by the on-board dust detector. During this time, the dust detector recorded 609 dust impacts of particles with masses 10(-16) g <= m <= 10(-7) g, bringing the mission total to 6719 dust data sets. The impact rate varied from a low value of 0.3 per day at high ecliptic latitudes to 1.5 per day in the inner solar system. The impact direction of the majority of impacts between 2005 and 2007 is compatible with particles of interstellar origin; the rest are most likely interplanetary particles. We compare the interstellar dust measurements from 2005/2006 with the data obtained during earlier periods (1993/1994) and (1999/2000) when Ulysses was traversing the same spatial region at southern ecliptic latitudes but the solar cycle was at a different phase. During these three intervals the impact rate of interstellar grains varied by more than a factor of two. Furthermore, in the two earlier periods the grain impact direction was in agreement with the flow direction of the interstellar helium while in 2005/2006 we observed a shift in the approach direction of the grains by approximately 30 away from the ecliptic plane. The reason for this shift remains unclear but may be connected with the configuration of the interplanetary magnetic field during solar maximum. We also find that the dust measurements are in agreement with the interplanetary flux model of Staubach et al. (1997) which was developed to fit a 5-year span of Ulysses data. (C) 2009 Elsevier Ltd. All rights reserved.
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Krueger H, Dikarev V, Anweiler B, et al. Three years of Ulysses dust data: 2005 to 2007. PLANETARY AND SPACE SCIENCE. 2010;58(7-8):951-964.
Krueger, H., Dikarev, V., Anweiler, B., Dermott, S. F., Graps, A. L., Gruen, E., Gustafson, B. A., et al. (2010). Three years of Ulysses dust data: 2005 to 2007. PLANETARY AND SPACE SCIENCE, 58(7-8), 951-964.
Krueger, H., Dikarev, V., Anweiler, B., Dermott, S. F., Graps, A. L., Gruen, E., Gustafson, B. A., Hamilton, D. P., Hanner, M. S., Horanyi, M., et al. (2010). Three years of Ulysses dust data: 2005 to 2007. PLANETARY AND SPACE SCIENCE 58, 951-964.
Krueger, H., et al., 2010. Three years of Ulysses dust data: 2005 to 2007. PLANETARY AND SPACE SCIENCE, 58(7-8), p 951-964.
H. Krueger, et al., “Three years of Ulysses dust data: 2005 to 2007”, PLANETARY AND SPACE SCIENCE, vol. 58, 2010, pp. 951-964.
Krueger, H., Dikarev, V., Anweiler, B., Dermott, S.F., Graps, A.L., Gruen, E., Gustafson, B.A., Hamilton, D.P., Hanner, M.S., Horanyi, M., Kissel, J., Linkert, D., Linkert, G., Mann, I., McDonnell, J.A.M., Morfill, G.E., Polanskey, C., Schwehm, G., Srama, R.: Three years of Ulysses dust data: 2005 to 2007. PLANETARY AND SPACE SCIENCE. 58, 951-964 (2010).
Krueger, H., Dikarev, Valery, Anweiler, B., Dermott, S. F., Graps, A. L., Gruen, E., Gustafson, B. A., Hamilton, D. P., Hanner, M. S., Horanyi, M., Kissel, J., Linkert, D., Linkert, G., Mann, I., McDonnell, J. A. M., Morfill, G. E., Polanskey, C., Schwehm, G., and Srama, R. “Three years of Ulysses dust data: 2005 to 2007”. PLANETARY AND SPACE SCIENCE 58.7-8 (2010): 951-964.
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