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The Demagnetization of the Venusian Ionosphere under Nearly Flow-aligned Interplanetary Magnetic Fields
DOI: 10.3847/1538-4357/aba62a Bibcode: 2020ApJ...900...63C

Xu, Qi; Zhang, Tielong; Xu, Xiaojun +4 more

Previous studies suggested that the interplanetary magnetic field (IMF) has a significant influence on the Venusian-induced magnetosphere. We present observations by Venus Express under a nearly flow-aligned IMF condition to investigate the demagnetization of the Venusian ionosphere. Our results show that the magnetic barrier becomes weak and narr…

2020 The Astrophysical Journal
VenusExpress 12
Using the "Ghost Front" to Predict the Arrival Time and Speed of CMEs at Venus and Earth
DOI: 10.3847/1538-4357/aba95a Bibcode: 2020ApJ...899..143C

Wang, Yuming; Shen, Chenglong; Lockwood, Mike +7 more

Using in situ measurements and remote-sensing observations, we study two coronal mass ejections (CMEs) that left the Sun on 2012 June 13-14 and impacted both Venus and Earth while the planets were in close radial alignment. The two CMEs generate multiple fronts in Solar Terrestrial Relations Observatory (STEREO)/Heliospheric Imager (HI) images, wh…

2020 The Astrophysical Journal
VenusExpress SOHO 12