Numerical modeling of the magnetic topology near Mars auroral observations

Numerical modeling of the magnetic topology near Mars auroral observations

[1] Magnetohydrodynamic (MHD) simulations of the Mars magnetic field topology are presented for the auroral observations reported from the Mars Express SPICAM instrument. It is found that the field lines closest to the assumed emission location are open. That is, they are connected to the interplanetary magnetic field, thus allowing access for solar wind electrons to bombard the upper atmospher...

Magnetic reconnection in the near-Mars magnetotail: MAVEN observations

We report Mars Atmosphere and Volatile EvolutioN (MAVEN) observations of electrons, ions, and magnetic fields which provide comprehensive demonstration of magnetic reconnection signatures in the Martian magnetotail. In the near-Mars tail current sheet at XMSO ∼−1.3RM, trapped electrons with two-sided loss cones were observed, indicating the closed magnetic field topology. In the closed field re...

Electron pitch angle distributions as indicators of magnetic field topology near Mars

[1] We have analyzed electron angular distributions recorded near Mars over a period of 7 years in order to constrain the topology of magnetic field lines near Mars. We used 63 million pitch angle distributions of 115 eV electrons measured at 400 km altitudes by the Mars Global Surveyor (MGS) spacecraft and classified them according to their shape. Closed magnetic field lines are associated wit...

Numerical Modeling of Surface and Near Bottom Currents in the Bushehr Bay

Bushehr Bay is situated along the northern Iranian coasts of the Persian Gulf, between 28°52΄ and 29°5΄ north latitude and 50°42΄ and 50°52΄east longitude. In this study COHERENS, which is a threedimensional hydrodynamic model, was employed to simulate surface and under surface currents in the Bushehr Bay. The atmospheric forces and four main tidal constituents M2, S2, K1, O1 and also boundary ...

Observations of Auroral Plasma Lines