[en] We present here a 2D-model of photochemistry for computing the production and loss mechanisms of the O([SUP]1[/SUP]S) and O([SUP]1[/SUP]D) states, which are responsible for the emission lines at 577.7 nm, 630 nm, and 636.4 nm, in case of the comet 1P/Halley. The presence of O[SUB]2[/SUB] within cometary atmospheres, measured by the in-situ ROSETTA and GIOTTO missions, necessitates a revision of the usual photochemical models. Indeed, the photodissociation of molecular oxygen also leads to a significant production of oxygen in excited electronic states. In order to correctly model the solar UV flux absorption, we consider here a 2D configuration. While the green to red-doublet ratio is not affected by the solar UV flux absorption, estimates of the red-doublet and green lines emissions are, however, overestimated by a factor of two in the 1D model compared to the 2D model. Considering a spherical symmetry, emission maps can be deduced from the 2D model in order to be directly compared to ground and/or in-situ observations.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Cessateur, G.; Space Physics Division, Royal Belgian Institute for Space Aeronomy, Ringlaan 3, B-1180 Brussels, Belgium
De Keyser, J.; Space Physics Division, Royal Belgian Institute for Space Aeronomy, Ringlaan 3, B-1180 Brussels, Belgium
Maggiolo, R.; Space Physics Division, Royal Belgian Institute for Space Aeronomy, Ringlaan 3, B-1180 Brussels, Belgium
Rubin, M.; Physikalisches Institut, University of Bern, Sidlerstr. 5, CH-3012 Bern, Switzerland
Gronoff, G.; Science Directorate, Chemistry and Dynamics Branch, NASA Langley Research Center, Hampton, Virginia USA ; SSAI, Hampton, Virginia USA
Gibbons, A.; Space Physics Division, Royal Belgian Institute for Space Aeronomy, Ringlaan 3, B-1180 Brussels, Belgium ; Service de Chimie Quantique et Photophysique, Université Libre de Bruxelles, Av. F. D. Roosevelt 50, B-1050 Brussels, Belgium
Jehin, Emmanuel ; Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Dhooghe, F.; Space Physics Division, Royal Belgian Institute for Space Aeronomy, Ringlaan 3, B-1180 Brussels, Belgium
Gunell, H.; Space Physics Division, Royal Belgian Institute for Space Aeronomy, Ringlaan 3, B-1180 Brussels, Belgium
Vaeck, N.; Service de Chimie Quantique et Photophysique, Université Libre de Bruxelles, Av. F. D. Roosevelt 50, B-1050 Brussels, Belgium
Loreau, J.; Service de Chimie Quantique et Photophysique, Université Libre de Bruxelles, Av. F. D. Roosevelt 50, B-1050 Brussels, Belgium)
Language :
English
Title :
2D-photochemical model for forbidden oxygen line emission for comet 1P/Halley
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Bibliography
Balsiger H. et al., 2007, Space Sci. Rev., 128, 745
Barthelemy M., Cessateur G., 2014, J. Space Weather Space Clim., 4, A35
Bhardwaj A., Raghuram S., 2012, ApJ, 748, 13
Bieler A. et al., 2015, Nature, 526, 678
Cessateur G. et al., 2016, J. Geophys. Res., 121, 804
Decock A., Jehin E., Rousselot P., Hutsemékers D., Manfroid J., Raghuram S., Bhardwaj A., Hubert B., 2015, A&A, 573, A1
Dello Russo N., Mumma M. J., DiSanti M. A., Magee-Sauer K., Novak R., Rettig T. W., 2000, Icarus, 143, 324
Fougere N. et al., 2016, A&A, 588, A134
Glassmeier K.-H., Boehnhardt H., Koschny D., Kührt E., Richter I., 2007, Space Sci. Rev., 128, 1
Gronoff G., Wedlund C. S., Mertens C. J., Lilensten J., Lillis R., Johnson P. V., 2011, EPSC-DPS Joint Meeting 2011. p. 1259. Available at http://meetings.copernicus.org/epsc-dps2011
Haser L., 1957, Bull. Soc. R. Sci. Liege, 43, 740
Huebner W. F., Keady J. J., Lyon S. P., 1992, Ap&SS, 195, 1
Keller H. U. et al., 2007, Space Sci. Rev., 128, 433
Krankowsky D. et al., 1986, Nature, 321, 326
Lilensten J. et al., 2014, A&AR, 22, 79
McKay A. J. et al., 2015, Icarus, 250, 504
Plainaki C. et al., 2016, J. Space Weather Space Clim., 6, A31
Reinhard R., 1986, Nature, 321, 313
Rubin M., Tenishev V. M., Combi M. R., Hansen K. C., Gombosi T. I., Altwegg K., Balsiger H., 2011, Icarus, 213, 655
Rubin M., Altwegg K., van Dishoeck E. F., Schwehm G., 2015, ApJ, 815, L11
Woods T. N. et al., 2005, J. Geophys. Res., 110, 1312
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