Recent progress in observational cosmology and the establishment of ΛCDM have relied on the combination of different cosmological probes. These probes are not independent, since they all measure the same physical fields. The resulting cross-correlations allow for a robust test of the cosmological model through the consistency of different physical tracers and for the identification of systematics. Integrated analyses taking into account both the auto- as well as the cross-correlations between cosmological probes therefore present a...
Title: Mars as a Nearby Exoplanetary Laboratory: Solar Wind Interaction, Atmospheric Loss, and Prebiotic Chemistry
Abstract: Mars has always represented a vital target from the standpoint of planetary science, especially on account of its past, and perhaps even its current, biological potential. In particular, ancient Mars (∼ 4 Ga) has attracted a great deal of attention because it may have possessed aqueous environments with water-rock interactions, minerals, biogenic elements, suitable energy sources for prebiotic chemistry, and possibly oceans; all of these factors could have... Read more about ITC Seminar - Chuanfei Dong (Princeton)
High-eccentricity migration is an important channel for the formation of hot Jupiters (HJs). In particular, Lidov–Kozai (LK) oscillations of orbital eccentricity/inclination induced by a distant planetary or stellar companion, combined with tidal friction, have been shown to produce HJs on Gyr time-scales. We re-examine this scenario with the inclusion of chaotic dynamical tides. When the planet’s orbit is in a high-eccentricity phase, the tidal force from the star excites oscillatory f-modes and i-modes in the planet. For sufficiently... Read more about ITC Seminar - Michelle Vick (Cornell)