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The astro-ph Reader’s Digest

Wreaking Havoc with a Stellar Fly-By

You can’t model RW Aurigae as a single star with a disk of material around it, because there is a second star. And you can’t model it as a regular old binary system either, because there are interactions between the stars and the asymmetric disk. The authors of today’s paper create a comprehensive hydrodynamic model that considers many different observations of RW Aurigae.

On and On They Spin

Nothing sits still in our Universe. Like planets, stars rotate. The authors of this paper found certain types of stars unexpectedly display rapid rotations when they are not supposed to.

A Possible Detection of Dark Matter in a Dwarf Galaxy!

If dark matter particles can collide to release gamma-rays, the best place to see them will be in the centers of dwarf galaxies. Archival Fermi-LAT images around Reticulum 2 show the first ever detection of gamma-rays from a dwarf galaxy. Dark matter detection may be close at hand!

The Magnetic Personalities Of Dead Stars

The galaxy is littered with white dwarfs, the burnt out remnants of stars that have run out of hydrogen fuel in their cores, but were too small to explode as supernovae. But far from being lifeless orbs, around a tenth of white dwarfs have powerful magnetic fields, a million times stronger than that of the Sun. How did these magnetic white dwarfs become such strong magnets? And just how many are there. The authors of this paper set out to answer the second of these questions, in the hope that it would shed light on the first.

Beyond astro-ph

Other Recent Posts

The Age of Solar System Exploration

The years of 2014 and 2015 may well be known as the time when our exploration of the solar system truly took off, as we explored asteroids, comets, and minor planets. Here’s a look back at what we’ve accomplished in the last year, and what we’re about to achieve in the year to come.

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