Simulating X-ray Binary Winds

Simulating X-ray Binary Winds

In today’s paper, Čechura and Hadrava examine what happens to the runaway gas from the surface of massive stars—the stellar wind. In particular, they look at systems with massive stars so close to a companion neutron star or black hole that the stellar wind is jarred into a new orbit and heated to the point of emitting X-rays.

Are There Two Missing Planets In The Solar System?

For years astronomers have wondered if there might be more planets in the Solar System, far beyond the orbit of Neptune. Although we now know for certain that there are no large gas giants left to be discovered, a recent finding has prompted the authors of this paper to propose the existence of not one, but two smaller planets in the outer Solar System.