Search Results - "Hansen, Kenneth C"
-
1
Elemental and molecular abundances in comet 67P/Churyumov-Gerasimenko
Published in Monthly notices of the Royal Astronomical Society (11-10-2019)“…ABSTRACT Comets are considered to be some of the most pristine and unprocessed Solar system objects accessible to in situ exploration. Investigating their…”
Get full text
Journal Article -
2
The surface distributions of the production of the major volatile species, H2O, CO2, CO and O2, from the nucleus of comet 67P/Churyumov-Gerasimenko throughout the Rosetta Mission as measured by the ROSINA double focusing mass spectrometer
Published in Icarus (New York, N.Y. 1962) (01-01-2020)“…The Rosetta Orbiter Spectrometer for Ion and Neutral Analysis (ROSINA) suite of instruments operated throughout the over two years of the Rosetta mission…”
Get full text
Journal Article -
3
Statistical validation of a solar wind propagation model from 1 to 10 AU
Published in Journal of Geophysical Research - Space Physics (01-08-2008)“…A one‐dimensional (1‐D) numerical magnetohydrodynamic (MHD) code is applied to propagate the solar wind from 1 AU through 10 AU, i.e., beyond the heliocentric…”
Get full text
Journal Article -
4
Prebiotic chemicals-amino acid and phosphorus-in the coma of comet 67P/Churyumov-Gerasimenko
Published in Science advances (01-05-2016)“…The importance of comets for the origin of life on Earth has been advocated for many decades. Amino acids are key ingredients in chemistry, leading to life as…”
Get full text
Journal Article -
5
Magnetospheric configuration and dynamics of Saturn's magnetosphere: A global MHD simulation
Published in Journal of Geophysical Research: Space Physics (01-05-2012)“…We investigate the solar wind interaction with Saturn's magnetosphere by using a global magnetohydrodynamic simulation driven by an idealized time‐varying…”
Get full text
Journal Article -
6
The impact of an ICME on the Jovian X‐ray aurora
Published in Journal of geophysical research. Space physics (01-03-2016)“…We report the first Jupiter X‐ray observations planned to coincide with an interplanetary coronal mass ejection (ICME). At the predicted ICME arrival time, we…”
Get full text
Journal Article -
7
Space Weather Modeling Framework: A new tool for the space science community
Published in Journal of Geophysical Research - Space Physics (01-12-2005)“…The Space Weather Modeling Framework (SWMF) provides a high‐performance flexible framework for physics‐based space weather simulations, as well as for various…”
Get full text
Journal Article -
8
Three-dimensional, multispecies, high spatial resolution MHD studies of the solar wind interaction with Mars
Published in Journal of Geophysical Research - Space Physics (01-07-2004)“…We present the results of model calculations, using our new, four‐species, spherical MHD model. Our results are compared with the relevant and limited…”
Get full text
Journal Article -
9
Detection of argon in the coma of comet 67P/Churyumov-Gerasimenko
Published in Science advances (01-09-2015)“…Comets have been considered to be representative of icy planetesimals that may have contributed a significant fraction of the volatile inventory of the…”
Get full text
Journal Article -
10
Monte Carlo modeling of neutral gas and dust in the coma of Comet 1P/Halley
Published in Icarus (New York, N.Y. 1962) (01-06-2011)“…► Direct Simulation Monte Carlo model of Comet 1P/Halley’s coupled neutral gas and dust coma. ► In situ measurements as well as remote sensing observations…”
Get full text
Journal Article -
11
An interplanetary shock traced by planetary auroral storms from the Sun to Saturn
Published in Nature (04-11-2004)“…A relationship between solar activity and aurorae on Earth was postulated long before space probes directly detected plasma propagating outwards from the Sun…”
Get full text
Journal Article -
12
Comparisons between MHD model calculations and observations of Cassini flybys of Titan
Published in Journal of Geophysical Research - Space Physics (01-05-2006)“…The Cassini spacecraft passed by Titan on 26 October 2004 (Ta flyby) and 13 December 2004 (Tb flyby). In both cases the Cassini Orbiter entered Titan's…”
Get full text
Journal Article -
13
Three-dimensional multispecies MHD studies of the solar wind interaction with Mars in the presence of crustal fields
Published in Journal of Geophysical Research - Space Physics (01-10-2002)“…We present the results of model calculations using a multispecies MHD model of the interaction of the solar wind with Mars. The three ions considered are H+,…”
Get full text
Journal Article -
14
Four‐fluid MHD simulations of the plasma and neutral gas environment of comet 67P/Churyumov‐Gerasimenko near perihelion
Published in Journal of geophysical research. Space physics (01-05-2016)“…The neutral and plasma environment is critical in understanding the interaction of the solar wind and comet 67P/Churyumov‐Gerasimenko (CG), the target of the…”
Get full text
Journal Article -
15
A global model of cometary tail disconnection events triggered by solar wind magnetic variations
Published in Journal of Geophysical Research - Space Physics (01-05-2007)“…Presented in this paper are the results of a time‐dependent, fully three‐dimensional self‐consistent ideal magneto‐hydrodynamics (MHD) model of disconnection…”
Get full text
Journal Article -
16
Three-dimensional MHD simulations of the magnetosphere of Uranus
Published in Journal of Geophysical Research - Space Physics (01-11-2004)“…We have successfully simulated the magnetosphere of Uranus for the time period of the Voyager 2 flyby in January 1986. On the basis of the Voyager…”
Get full text
Journal Article -
17
Upstream conditions at Mercury during the first MESSENGER flyby: Results from two independent solar wind models
Published in Geophysical research letters (01-05-2009)“…The primary goal of this paper is to provide estimates of upstream solar wind plasma conditions at Mercury during the January 2008 MESSENGER flyby, based on…”
Get full text
Journal Article -
18
3-D global MHD model prediction for the first close flyby of Titan by Cassini
Published in Geophysical research letters (01-11-2004)“…The global features of the interaction between Saturn's magnetospheric plasma flow and Titan's atmosphere/ionosphere are simulated by using a 3‐D,…”
Get full text
Journal Article -
19
A comparison between the two lobes of comet 67P/Churyumov–Gerasimenko based on D/H ratios in H2O measured with the Rosetta/ROSINA DFMS
Published in Monthly notices of the Royal Astronomical Society (11-11-2019)“…ABSTRACT The nucleus of the Jupiter-family comet 67P/Churyumov–Gerasimenko was discovered to be bi-lobate in shape when the European Space Agency spacecraft…”
Get full text
Journal Article -
20
Cassini UVIS observations of Jupiter's auroral variability
Published in Icarus (New York, N.Y. 1962) (15-11-2005)“…The Cassini spacecraft Ultraviolet Imaging Spectrograph (UVIS) obtained observations of Jupiter's auroral emissions in H 2 band systems and H Lyman- α from day…”
Get full text
Journal Article Web Resource