Search: onr:"swepub:oai:DiVA.org:uu-473189" >
A Two-Spacecraft St...
A Two-Spacecraft Study of Mars' Induced Magnetosphere's Response to Upstream Conditions
-
- Stergiopoulou, Katerina (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen,Institutionen för fysik och astronomi
-
- Andrews, David J. (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
-
- Edberg, Niklas J. T. (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
-
show more...
-
- Halekas, Jasper (author)
- Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA.
-
- Lester, Mark (author)
- Univ Leicester, Sch Phys & Astron, Leicester, Leics, England.
-
- Sanchez-Cano, Beatriz (author)
- Univ Leicester, Sch Phys & Astron, Leicester, Leics, England.
-
- Dimmock, Andrew P. (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
-
- Gruesbeck, Jacob R. (author)
- Goddard Space Flight Ctr, Greenbelt, MD USA.
-
show less...
-
(creator_code:org_t)
- American Geophysical Union (AGU), 2022
- 2022
- English.
-
In: Journal of Geophysical Research - Space Physics. - : American Geophysical Union (AGU). - 2169-9380 .- 2169-9402. ; 127:4
- Related links:
-
https://doi.org/10.1...
-
show more...
-
https://uu.diva-port... (primary) (Raw object)
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- This is a two-spacecraft study, in which we investigate the effects of the upstream solar wind conditions on the Martian induced magnetosphere and upper ionosphere. We use Mars Express (MEX) magnetic field magnitude data together with interplanetary magnetic field (IMF), solar wind density, and velocity measurements from the Mars Atmosphere and Volatile EvolutioN (MAVEN) mission, from November 2014 to November 2018. We compare simultaneous observations of the magnetic field magnitude in the induced magnetosphere of Mars (|B|(IM)) with the IMF magnitude (|B|(IMF)), and we examine variations in the ratio |B|(IM)/|B|(IMF) with solar wind dynamic pressure, speed and density. We find that the |B|(IM)/|B|(IMF) ratio in the induced magnetosphere generally decreases with increased dynamic pressure and that a more structured interaction is seen when comparing induced fields to the instantaneous IMF, where reductions in the relative fields at the magnetic pile up boundary (MPB) are more evident than in the field strength itself, along with enhancements in the immediate vicinity of the optical shadow of Mars. We interpret these results as evidence that while the induced magnetosphere is indeed compressed and induced field strengths are higher during periods of high dynamic pressure, a relatively larger amount of magnetic flux threads the region compared to that available from the unperturbed IMF during low dynamic pressure intervals.
Subject headings
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database