Astronomy and Astrophysics

Neutron Star Merger

Courtesy of NASA

Brian Metzger won the $100,000 prize — awarded by the Breakthrough Prize Foundation to early-career researchers — for his pioneering predictions of the electromagnetic signal from a neutron star merger and for leadership in the emerging field of multi-messenger astronomy.

In a new study, astronomers show how gas expelled in the merger of two small galaxies can linger across vast distances for billions of years, where it may eventually feed gas to more massive galaxies to make new stars. The Large Magellanic Cloud and the Small Magellanic Cloud pictured above are a pair of dwarf galaxies that were in the process of merging when they fell into the Milky Way. Their gas is expected to replenish half of the gas consumed by our galaxy as it forms new stars. (Photo: S. Brunier/European Southern Observatory)

 

In a new study, astronomers show how gas expelled in the merger of two small galaxies can linger across vast distances for billions of years, where it may eventually feed gas to more massive galaxies to make new stars.

Elena Aprile leads the XENON collaboration, which has built the world’s largest and most sensitive device yet to look for evidence of weakly interacting massive dark matter particles, or WIMPs. (Symmetry magazine)

Elena Aprile, a physics professor at Columbia who is leading the world’s most sensitive search yet for dark matter, will receive the American Astronomical Society’s 2019 Berkeley Prize.