When Galaxies Interact
The authors seek to understand how two galaxies are interacting with each other.
Water in Gale Crater on Mars
The Mars rover Curiosity found significant traces of water in the martian soil. This indicates the soil contains water, about 2% by weight.
Reassuring Chicken Little: Why Satellites Are Not Falling Out of The Sky
This paper seeks to provide a theoretical explanation for why gravitational perturbations do not disrupt the Keplerian orbits of Earth’s satellites.
A New Model for Rapidly-Fading Supernovae
In this paper the authors present simulations of a model to explain rapidly-fading supernovae, a class of transients whose lightcurves decline quickly without substantial radioactive tails. They posits a standard core-collapse explosion of a standard Type Ib/Ic supernova progenitor, but one that produces very little radioactivity and instead exhibits a light curve governed by oxygen recombination.
How Massive is Kappa Andromedae B?
A “Super-Jupiter” recently discovered by direct imaging techniques may not be as it initially seemed. Hinkley et al. find the system to be older than expected and the Super-Jupiter to really be a brown dwarf.
Mapping Magnetic Fields with Exoplanet Transits
Transit observations can yield a lot of information about exoplanets. If a transiting exoplanet encounters stellar wind, the bow shock created can show up in the transit light curves. In this paper, the authors investigate how the stellar wind of a star can shape the light curves we observe.