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CME impact on comet 67P/Churyumov-Gerasimenko
Glassmeier, K. -H.; Behar, E.; Möstl, C. +23 more
We present Rosetta observations from comet 67P/Churyumov-Gerasimenko during the impact of a coronal mass ejection (CME). The CME impacted on 2015 Oct 5-6, when Rosetta was about 800 km from the comet nucleus, and 1.4 au from the Sun. Upon impact, the plasma environment is compressed to the level that solar wind ions, not seen a few days earlier wh…
Evidence for large-scale subsurface convection in the Sun
Woodard, M. F.
A helioseismic statistical waveform analysis of subsurface flow was performed on two 720-day time series of SOHO/Michelson Doppler Imager medium-l spherical-harmonic coefficients. The time series coincide with epochs of high and low solar activity. Time-dependent coupling-strength coefficients b^t_s(n,l) of modes of the same radial order n and deg…
Interstellar dust distribution outside the heliopause: deflection at the heliospheric interface
Katushkina, O. A.; Izmodenov, V. V.; Alexashov, D. B. +1 more
We developed a numerical model of the interstellar dust distribution in the global heliosphere including the heliospheric interface, where the solar wind plasma interacts with the local interstellar plasma. The model is based on the plasma distributions obtained by the 3D kinetic-magnetohydrodynamic model of the heliospheric interface developed by…
A revised gyro-age for M67 from Kepler/K2-Campaign-5 light curves
Gonzalez, Guillermo
We revisit the photometric variability of stars in the M67 field using Kepler/K2-Campaign-5 light curves. In our previous work, we limited the search area around M67 to that of a recent ground-based study. In the present work, we expand the search area and apply a more rigorous period-finding algorithm to determine the rotation periods of 98 main-…