A comparison between VEGA 1, 2 and Giotto flybys of comet 1P/Halley: implications for Rosetta
-
Published:2014-11-28
Issue:11
Volume:32
Page:1441-1453
-
ISSN:1432-0576
-
Container-title:Annales Geophysicae
-
language:en
-
Short-container-title:Ann. Geophys.
Author:
Volwerk M.ORCID, Glassmeier K.-H., Delva M., Schmid D.ORCID, Koenders C., Richter I., Szegö K.ORCID
Abstract
Abstract. Three flybys of comet 1P/Halley, by VEGA 1, 2 and Giotto, are investigated with respect to the occurrence of mirror mode waves in the cometosheath and field line draping in the magnetic pile-up region around the nucleus. The time interval covered by these flybys is approximately 8 days, which is also the approximate length of an orbit or flyby of Rosetta around comet 67P/Churyumov–Gerasimenko. Thus any significant changes observed around Halley are changes that might occur for Rosetta during one pass of 67P/CG. It is found that the occurrence of mirror mode waves in the cometosheath is strongly influenced by the dynamical pressure of the solar wind and the outgassing rate of the comet. Field line draping happens in the magnetic pile-up region. Changes in nested draping regions (i.e. regions with different Bx directions) can occur within a few days, possibly influenced by changes in the outgassing rate of the comet and thereby the conductivity of the cometary ionosphere.
Publisher
Copernicus GmbH
Subject
Space and Planetary Science,Earth and Planetary Sciences (miscellaneous),Atmospheric Science,Geology,Astronomy and Astrophysics
Reference45 articles.
1. Alfvén, H.: On the theory of comet tails, Tellus, 9, 92–96, 1957. 2. Bertucci, C., Mazelle, C., Crider, D. H., Vignes, D., Acuña, M. H., Mitchell, D. L., Lin, R. P., Connerney, J. E. P., Rème, H., Cloutier, P. A., Ness, N. F., and Winterhalter, D.: Magnetic field draping enhancement at the Martian magnetic pileup boundary from Mars global surveyor observations, Geophys. Res. Lett., 30, 1099, https://doi.org/10.1029/2002GL015713, 2003a. 3. Bertucci, C., Mazelle, C., Slavin, J. A., Russell, C. T., and Acuña, M. H.: Magnetic field draping enhancement at Venus: Evidence for a magnetic pileup boundary, Geophys. Res. Lett., 30, 1876, https://doi.org/10.1029/2003GL017271, 2003b. 4. Biver, N., Bockelée-Morvan, D., Boissier, J., Crovisier, J., Colom, P., Lecacheux, A., Moreno, R., Paubert, G., Lis, D. C., Sumner, M., Frisk, U., Hjalmarson, Å., Olberg, M., Winnberg, A., Florén, H.-G., Sandqvist, A., and Kwok, S.: Radio observations of Comet 9P/Tempel 1 before and after Deep Impact, Icarus, 187, 253–271, https://doi.org/10.1016/j.icarus.2006.10.011, 2007. 5. Delva, M., Bertucci, C., Schwingenschuh, K., Volwerk, M., and Romanelli, N.: Magnetic pileup boundary and field draping at Comet Halley, Planet. Space Sci., 96, 125–131, https://doi.org/10.1016/j.pss.2014.02.010, 2014.
Cited by
16 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
|
|