Pluto's interaction with its space environment: Solar wind, energetic particles, and dust

被引：60

作者：

Bagenal, F. ^{[1
]}

Horanyi, M. ^{[1
]}

McComas, D. J. ^{[2
,3
]}

McNutt, R. L., Jr. ^{[4
]}

Elliott, H. A. ^{[2
]}

Hill, M. E. ^{[4
]}

Brown, L. E. ^{[4
]}

Delamere, P. A. ^{[5
]}

Kollmann, P. ^{[4
]}

Krimigis, S. M. ^{[4
,6
]}

Kusterer, M. ^{[4
]}

Lisse, C. M. ^{[4
]}

Mitchell, D. G. ^{[4
]}

Piquette, M. ^{[1
]}

Poppe, A. R. ^{[7
]}

Strobel, D. F. ^{[8
]}

Szalay, J. R. ^{[1
,9
]}

Valek, P. ^{[2
]}

Vandegriff, J. ^{[4
]}

Weidner, S. ^{[2
]}

Zirnstein, E. J. ^{[2
]}

Stern, S. A. ^{[9
]}

Ennico, K. ^{[10
]}

Olkin, C. B. ^{[9
]}

Weaver, H. A. ^{[4
]}

Young, L. A. ^{[9
]}

机构：

[1] Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80600 USA

[2] SW Res Inst, 6220 Culebra Rd, San Antonio, TX 78228 USA

[3] Univ Texas San Antonio, San Antonio, TX 78249 USA

[4] Johns Hopkins Univ, Appl Phys Lab, Johns Hopkins Rd, Laurel, MD 20723 USA

[5] Univ Alaska, Fairbanks, AK 99775 USA

[6] Acad Athens, 28 Panapistimiou, Athens 10679, Greece

[7] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[8] Johns Hopkins Univ, Baltimore, MD 21218 USA

[9] SW Res Inst, Boulder, CO 80302 USA

[10] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA

来源：

SCIENCE | 2016年 / 351卷 / 6279期

关键词：

PICK-UP IONS; BOW SHOCK; ESCAPE; AU; ATMOSPHERE; VOYAGER-2; DENSITY; COUNTER; MODELS; SYSTEM;

D O I：

10.1126/science.aad9045

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The New Horizons spacecraft carried three instruments that measured the space environment near Pluto as it flew by on 14 July 2015. The Solar Wind Around Pluto (SWAP) instrument revealed an interaction region confined sunward of Pluto to within about 6 Pluto radii. The region's surprisingly small size is consistent with a reduced atmospheric escape rate, as well as a particularly high solar wind flux. Observations from the Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI) instrument suggest that ions are accelerated and/or deflected around Pluto. In the wake of the interaction region, PEPSSI observed suprathermal particle fluxes equal to about 1/10 of the flux in the interplanetary medium and increasing with distance downstream. The Venetia Burney Student Dust Counter, which measures grains with radii larger than 1.4 micrometers, detected one candidate impact in +/- 5 days around New Horizons' closest approach, indicating an upper limit of <4.6 kilometers(-3) for the dust density in the Pluto system.

引用

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