P034
Space environments of unmagnetized or weakly magnetized solar system bodies and the effects of space weather on these systems

Session ID#: 74979

Session Description:
The ionospheres and magnetospheres of weakly magnetized bodies with substantial atmospheres (e.g. Mars, Venus, Titan, Pluto and comets) are subject to disturbances due to solar activities, interplanetary conditions, or parent magnetospheric environments (e.g. solar flares, coronal mass ejections and solar energetic particles), sharing similarities with their magnetized counterparts but with scientifically important differences. As an integral part of planetary atmospheres, ionospheres are tightly coupled with the neutral atmosphere, exosphere and surrounding plasma environment, possessing rich compositional, density, and temperature structures. The interaction among neutral and charged components affects atmospheric loss, neutral winds, photochemistry, and energy balance within ionospheres. This session invites abstracts concerning remote and in-situ data analysis, modeling studies, comparative studies, instrumentation and mission concepts for weakly magnetized solar system bodies. Topics such as dayside and nightside ionospheric characteristics and variability, ion-neutral coupling, and responses of the ionized and neutral regimes to transient space weather events are especially encouraged.
Index Terms:

5435 Ionospheres [PLANETARY SCIENCES: SOLID SURFACE PLANETS]
6005 Atmospheres [PLANETARY SCIENCES: COMETS AND SMALL BODIES]
6025 Interactions with solar wind plasma and fields [PLANETARY SCIENCES: COMETS AND SMALL BODIES]
6026 Ionospheres [PLANETARY SCIENCES: COMETS AND SMALL BODIES]

Primary Convener:  Christopher M Fowler, Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, United States
Conveners:  Yingjuan Ma, University of California Los Angeles, Los Angeles, CA, United States, Xiaohua Fang, University of Colorado at Boulder, Boulder, CO, United States and Pierre Henri, Laboratoire de Physique et Chimie de l'Environnement et de l'Espace, Orléans Cedex 2, France
Primary Liaison:  Christopher M Fowler, Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, United States
 
Polarisation of a small scale cometary plasma environment: Particle in Cell simulations (490681)
Jesper Lindkvist, Umeå University, Umeå, Sweden, Herbert Gunell, Belgian Inst. Space Aeronomy, Brussels, Belgium, Charlotte Goetz, Technical University of Braunschweig, Braunschweig, Germany, Hans Nilsson, IRF Swedish Institute of Space Physics Kiruna, Kiruna, Sweden and Maria Hamrin, Umea Univ, Umea, Sweden
 
Sub-solar electron temperatures in the lower Martian ionosphere (490798)
William K Peterson1, Laila Andersson2, James Webster3, Edward Thiemann4, Marcin Pilinski4, Scott A Thaller5, Christopher M Fowler6, David Mitchell6, Mehdi Benna7, Roger V Yelle8 and Shane Stone8, (1)University of Colorado at Boulder, Boulder, CO, United States, (2)Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, United States, (3)University of Colorado, Boulder, CO, United States, (4)Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, (5)University of Minnesota, School of Physics and Astronomy, Minneapolis, MN, United States, (6)Space Sciences Laboratory, University of California Berkeley, Berkeley, CA, United States, (7)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (8)University of Arizona, Lunar and Planetary Laboratory, Tucson, AZ, United States
 
Magnetic Reconnection in the Collisional Ionosphere of Mars (492411)
Thomas Cravens1, Antonio Robin Renzaglia2, David Brain3, Oliver Q Hamil2, Christopher M Fowler4, Ali Rahmati5, Shaosui Xu4, James P McFadden6 and John E P Connerney7, (1)University of Kansas, Physics and Astronomy, Lawrence, KS, United States, (2)University of Kansas, Lawrence, KS, United States, (3)Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States, (4)Space Sciences Laboratory, University of California Berkeley, Berkeley, CA, United States, (5)University of California Berkeley, Space Sciences Laboratory, Berkeley, CA, United States, (6)Univ California Berkeley, Berkeley, CA, United States, (7)NASA Goddard Space Flight Center, Greenbelt, MD, United States
 
Modeling Ionospheric Densities and Flows in Crustal and Draped Magnetic Fields at Mars (496894)
Antonio Robin Renzaglia, University of Kansas, Lawrence, KS, United States, Thomas Cravens, University of Kansas, Physics and Astronomy, Lawrence, KS, United States, Christopher M Fowler, Space Sciences Laboratory, University of California Berkeley, Berkeley, CA, United States, Ali Rahmati, University of California Berkeley, Space Sciences Laboratory, Berkeley, CA, United States, Shotaro Sakai, Hokkaido University, Sapporo, Japan, John E P Connerney, NASA Goddard Space Flight Center, Greenbelt, MD, United States, Mehdi Benna, NASA - GSFC, Greenbelt, MD, United States and Laila Andersson, Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, United States
 
The altitude patterns of photo-chemical-equilibrium conditions in the Martian ionosphere (497327)
Clara Narvaez1, Sophie R. Phillips1, Michael Mendillo1, Edward Thiemann2, Mehdi Benna3, Francis Epavier4, Phillip C Chamberlin3, Paul R Mahaffy5 and Laila Andersson6, (1)Boston University, Center for Space Physics, Boston, MA, United States, (2)Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, (3)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (4)Univ Colorado, Boulder, CO, United States, (5)NASA Goddard SFC, Greenbelt, MD, United States, (6)Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, United States
 
Recent Results from the MAVEN Radio Occultation Science Experiment (ROSE) (498717)
Michael Mendillo1, Clara Narvaez1, Paul Withers2 and Marianna Felici3, (1)Boston University, Center for Space Physics, Boston, MA, United States, (2)Boston University, Boston, MA, United States, (3)Mullard Space Science Laboratory, Dorking, United Kingdom
 
Martian Ionopause: Coincidence with Photoelectron Boundary and Response to Internal and External Drivers (504932)
Firdevs Duru1, Noah Baker2, Madison De Boer2, Arabella Chamberlain2, Rebecca Verchimak2, David DeWitt Morgan3, Feng Chu3, Zachary Girazian4, Donald A Gurnett3, Jasper S Halekas3 and Andrew Kopf3, (1)Coe College, Department of Physics, Cedar Rapids, IA, United States, (2)Coe College, Cedar Rapids, United States, (3)University of Iowa, Department of Physics and Astronomy, Iowa City, IA, United States, (4)University of Iowa, Physics and Astronomy, Iowa City, IA, United States
 
Steepening of Magnetosonic Waves in the Inner Coma of 67P/Churyumov-Gerasimenko (514485)
Katharina Ostaszewski1, Phillip Heinisch1, Bruce Tsurutani2, Ingo Richter1, Martin Rubin3 and Karl-Heinz Glassmeier1, (1)Technical University of Braunschweig, Braunschweig, Germany, (2)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (3)University of Bern, Physics Institute, Space Research and Planetary Sciences, Bern, Switzerland
 
Observations of the Venus Dramatic Response to an Extremely Strong Interplanetary Coronal Mass Ejection (515230)
Qi Xu1, Xiaojun Xu1, Qing Chang1, Zhaojin Rong2, Jing Wang1, Jiaying Xu1 and Tielong Zhang3, (1)State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macao, Macau, (2)Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China, (3)Space Research Institute, Graz, Austria
 
Large Plasma Vortices in the Wake-magnetosheath of Venus and Mars. An Analytical Approach. (532269)
Alberto Flandes, National Autonomous University of Mexico, Ciudad DE Armería, Mexico and Héctor Javier Durand-Manterola, Universidad Nacional Autónoma de México, Instituto de Geofísica, Mexico, D. F., Mexico
 
The Beginning of High-Resolution MARSIS Ionospheric Science (548838)
Andrew James Kopf1, Jasper S Halekas2 and Donald A Gurnett2, (1)University of Iowa, Iowa City, IA, United States, (2)University of Iowa, Department of Physics and Astronomy, Iowa City, IA, United States
 
Unexpected Detections of Martian Nightside Proton Aurora and Connections with the Mars Magnetic Field Environment (548932)
Andrea C. G. Hughes1, Michael Chaffin2, Edwin J Mierkiewicz1, Nicholas McCord Schneider3, Justin Deighan2, Sonal K Jain2, Majd Mayyasi4, Matteo Michael James Crismani2 and Bruce Martin Jakosky5, (1)Embry-Riddle Aeronautical University, Daytona Beach, FL, United States, (2)Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, (3)Univ Colorado, Boulder, CO, United States, (4)Boston University, Boston, MA, United States, (5)University of Colorado Boulder, Boulder, CO, UNITED STATES
 
MAVEN Insights into the Precipitation of Solar Energetic Electrons in the Upper Atmosphere of Mars during the September 2017 ICME Event (549873)
Ali Rahmati1, Davin E Larson1, Thomas Cravens2, Yingjuan Ma3, Robert J Lillis1, David L Mitchell1, Shaosui Xu1, John E P Connerney4, Patrick Dunn1, Christina O Lee1, Gina A DiBraccio4, Jared R Espley4, Janet G Luhmann1, Bruce Martin Jakosky5 and MAVEN, (1)University of California Berkeley, Space Sciences Laboratory, Berkeley, CA, United States, (2)University of Kansas, Physics and Astronomy, Lawrence, KS, United States, (3)UCLA, IGPP, Los Angeles, CA, United States, (4)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (5)University of Colorado Boulder, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States
 
Characterization of a two-electron temperature plasma in the ionosphere of the comet 67P/Churyumov-Gerasimenko with the mutual impedance experiment (RPC-MIP) of Rosetta (550657)
Nicolas Gilet1, Pierre Henri2, Gaétan Wattieaux3, Nima Traoré2, Anders I Eriksson4, Xavier Vallières2, Jérôme Moré2, Orélien Randriamboarison2, Elias Odelstad4, Fredrik Leffe Johansson4 and Martin Rubin5, (1)Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E) - CNRS - Université d'Orléans, Orléans, France, (2)Laboratoire de Physique et Chimie de l'Environnement et de l'Espace, Orléans Cedex 2, France, (3)University Paul Sabatier Toulouse III, Laboratoire Plasma et Conversion d'Energie, Toulouse Cedex 09, France, (4)IRF Swedish Institute of Space Physics Uppsala, Uppsala, Sweden, (5)University of Bern, Physics Institute, Space Research and Planetary Sciences, Bern, Switzerland
 
The Effects of the Upper Atmosphere and Corona on the Solar Wind Interaction with Venus (550959)
Y-J Ma1, Michael R Combi2, Stephen W Bougher3, Valeriy Tenishev2 and Yinsi Shou4, (1)UCLA, Los Angeles, CA, United States, (2)Univ Michigan, Ann Arbor, MI, United States, (3)Climate and Space Sciences and Engineering Department, Ann Arbor, MI, United States, (4)Univ. of Michigan, Ann Arbor, MI, United States
 
The modulation of solar wind hydrogen deposition in the Martian atmosphere by foreshock phenomena (555576)
Christopher M Fowler, Space Sciences Laboratory, Berkeley, CA, United States, Jasper S Halekas, University of Iowa, Department of Physics and Astronomy, Iowa City, IA, United States, Steven J Schwartz, Imperial College London, London, United Kingdom, Katherine Goodrich, University of Colorado Boulder, Boulder, CO, United States, Jacob Gruesbeck, University of Maryland College Park, College Park, MD, United States and Mehdi Benna, NASA Goddard Space Flight Center, Greenbelt, MD, United States
 
Plasma Vortices in the Venus wake measured during different solar cycles: PVO and VEX observations (560325)
Dulce Trejo, Universidad Nacional Autónoma de México, Coyoacan, Mexico, Hector A Perez De Tejada, UNAM, Mexico D F, Mexico and Hector Javier Durand-Manterola, UNAM National Autonomous University of Mexico, Mexico City, Mexico
 
Observations of Ion-Neutral Coupling in Mars Ionospheric and Neutral Density Wave Signatures (562325)
Marcin Pilinski, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, Laila Andersson, Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, United States and Jonathan Lee, University of Colorado at Boulder, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States
 
Comparisons between InSight IFG Surface Magnetic Field Measurements and MAVEN Observations (565345)
Matthew O. Fillingim1, Christopher T Russell2, Steven P Joy2, Peter J Chi2, Yanan Yu2, Catherine Johnson3, Anna Mittelholz4, Benoit Langlais5, Robert J Lillis6, Janet G Luhmann7, Jared R Espley8, Jasper S Halekas9, W Bruce Banerdt10 and Bruce Martin Jakosky11, (1)University of California Berkeley, Berkeley, CA, United States, (2)University of California Los Angeles, Department of Earth Planetary and Space Sciences, Los Angeles, CA, United States, (3)University of British Columbia, Department of Earth, Ocean and Atmospheric Sciences, Vancouver, BC, Canada, (4)University of British Columbia, Department of Earth, Ocean and Atmospheric Science, Vancouver, BC, Canada, (5)Lab Planetologie Geodynamique, Nantes, France, (6)Space Sciences Laboratory, University of California Berkeley, Berkeley, CA, United States, (7)University of California Berkeley, Space Sciences Laboratory, Berkeley, CA, United States, (8)Goddard Space Flight Center, Greenbelt, MD, United States, (9)University of Iowa, Department of Physics and Astronomy, Iowa City, IA, United States, (10)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (11)University of Colorado Boulder, Boulder, CO, UNITED STATES
 
Responses of Venus and Mars to an Extreme Carrington-Type Space Weather Event: Atmospheric Loss and Core-Induced Magnetic Signature (572933)
Chuanfei Dong, Princeton University, Princeton, NJ, United States, Janet G Luhmann, University of California Berkeley, Space Sciences Laboratory, Berkeley, CA, United States, Yingjuan Ma, University of California Los Angeles, Los Angeles, CA, United States, James L Green, NASA HQ, Washington, DC, United States, C. T. Russell, UCLA, Los Angeles, CA, United States, Jessica C E Irving, Princeton University, Department of Geosciences, Princeton, NJ, United States, Yuxi Chen, University of Michigan, Ann Arbor, MI, United States, Shannon Curry, Space Sciences Laboratory, University of California Berkeley, Berkeley, CA, United States, Xiaohua Fang, University of Colorado at Boulder, Boulder, CO, United States, Stephen W Bougher, Climate and Space Sciences and Engineering Department, Ann Arbor, MI, United States and Andrew F Nagy, University of Michigan Ann Arbor, Ann Arbor, MI, United States
 
The infant bow shock - where and when does it exist? (574208)
Charlotte Goetz, Technical University of Braunschweig, Braunschweig, Germany; European Space Agency, Noordwijk, Netherlands, Herbert Gunell, BIRA-IASB, Belgian Institute for Space Aeronomy, Brussels, Belgium, Fredrik Leffe Johansson, IRF Swedish Institute of Space Physics Uppsala, Uppsala, Sweden, Kristie LLera, University of Texas at San Antonio, San Antonio, TX, United States, Hans Nilsson, IRF Swedish Institute of Space Physics Kiruna, Kiruna, Sweden, Matt Taylor, European Space Agency, Villanueva De La Can, Spain and Karl-Heinz Glassmeier, Technische Universität Braunschweig, Braunschweig, Germany
 
Real Time Response of the Ionosphere of Mars to an X-Class Solar Flare (593439)
Zachary Girazian1, Donald A Gurnett2, Philip Chamberlin3, Edward Thiemann3, Feng Chu2, Jasper S Halekas2, Andrew Kopf2, David DeWitt Morgan2 and Frantisek Nemec4, (1)University of Iowa, Physics and Astronomy, Iowa City, IA, United States, (2)University of Iowa, Department of Physics and Astronomy, Iowa City, IA, United States, (3)Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, (4)Charles University, Prague, 180, Czech Republic
 
Sounder Accelerated Particles at Mars: Observations, Mechanism, and Applications (599182)
Stanislav V Barabash1, Andrii Voshchepynets1, Mats Holmström1, Rudy A Frahm2 and Andrew Kopf3, (1)IRF Swedish Institute of Space Physics Kiruna, Kiruna, Sweden, (2)Southwest Research Inst, San Antonio, TX, United States, (3)University of Iowa, Department of Physics and Astronomy, Iowa City, IA, United States
 
Solar Wind Interaction and Pressure Balance at the Dayside Ionopause of Mars (601803)
Feng Chu1, Zachary Girazian2, Donald A Gurnett1, David DeWitt Morgan1, Jasper S Halekas1, Andrew Kopf1, Robin Ramstad3 and Firdevs Duru4, (1)University of Iowa, Department of Physics and Astronomy, Iowa City, IA, United States, (2)University of Iowa, Physics and Astronomy, Iowa City, IA, United States, (3)University of Colorado Boulder, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, (4)Coe College, Department of Physics, Cedar Rapids, IA, United States
 
Tidal waves and ionosphere–thermosphere coupling at Mars (604784)
Scott Thaller, LASP/CU, Boulder, United States, Laila Andersson, Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, United States, Marcin Pilinski, Atmospheric and Space Technology Research Associates LLC, Boulder, CO, United States, Paul Withers, Boston University, Boston, MA, United States, Meredith K Elrod, NASA Goddard Space Flight Center, Greenbelt, MD, United States, Francisco Gonzalez-Galindo, IAA-CSIC, Granada, Spain and Stephen W Bougher, Climate and Space Sciences and Engineering Department, Ann Arbor, MI, United States
 
Plasma density at comet 67P from 1.25 to 3.8 AU (606317)
Fredrik Leffe Johansson1, Anders Eriksson2, Elias Odelstad1, Erik Vigren1, Pierre Henri3, Xavier Vallières3 and Luca Bucciantini4, (1)IRF Swedish Institute of Space Physics Uppsala, Uppsala, Sweden, (2)IRF Swedish Institute of Space Physics, Uppsala, Sweden, (3)Laboratoire de Physique et Chimie de l'Environnement et de l'Espace, Orléans Cedex 2, France, (4)LPC2E, Orléans, France
 
DETECTING CARBON LOSS AT MARS: RESULTS FROM MAVEN STATIC (606782)
Nicholas Brackney Pickett, University of California Berkeley, Berkeley, CA, United States and James P McFadden, Univ California Berkeley, Berkeley, CA, United States
 
MAVEN observations of large scale magnetic depletions in the Martian ionosphere (613152)
John Zachary Ortiz, Space Sciences Laboratory, Berkeley, CA, United States, Christopher M Fowler, Space Sciences Laboratory, University of California Berkeley, Berkeley, CA, United States, Gwen Hanley, Space Sciences Laboratory, Berkeley, United States and Jared R Espley, Goddard Space Flight Center, Greenbelt, MD, United States
 
Solar Cycle Variations of the Ionospheres of Venus and Mars (620568)
Kerrin Hensley1, Paul Withers1, Zachary Girazian2, Martin Paetzold3, Silvia Tellmann4 and Bernd Häusler5, (1)Boston University, Boston, MA, United States, (2)University of Iowa, Physics and Astronomy, Iowa City, IA, United States, (3)Universitaet Koeln, Koeln, Germany, (4)University of Cologne, Cologne, Germany, (5)Bundeswehr University Munich, Institute of Space Technology and Space Applications, Munich, Germany
 
Energy Input of Solar Energetic Particles at Mars (621749)
Rebecca Jolitz, University of Colorado at Boulder, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, Christina O Lee, Space Sciences Laboratory, University of California at Berkeley, Berkeley, CA, United States, Ali Rahmati, University of California Berkeley, Space Sciences Laboratory, Berkeley, CA, United States, Dave A Brain, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, Chuanfei Dong, Princeton University, Princeton, NJ, United States, Robert J Lillis, Space Sciences Laboratory, University of California Berkeley, Berkeley, CA, United States, Jasper S Halekas, University of Iowa, Department of Physics and Astronomy, Iowa City, IA, United States, Stephen W Bougher, Climate and Space Sciences and Engineering Department, Ann Arbor, MI, United States, Davin E Larson, Space Sciences Laboratory, Berkeley, CA, United States and Bruce Martin Jakosky, University of Colorado Boulder, Boulder, CO, UNITED STATES
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