Probing the source of a mysterious (dark matter?) line in the laboratory
A laboratory astrophysics experiment calls into question the proposed dark matter origin of an unidentified spectral line at 3.5 keV
GW170817: the X-ray emission did what?
An update on the momentous binary neutron star merger observation, in x-rays.
GRB Afterglows: Coming out of a Cocoon, and Doing Just Fine?
It started out with a burst of gamma rays, how did it end up like blackbody radiation? Today’s paper discusses observations of gamma ray bursts with strange spectra.
X-ray eyes on a Wolf-Rayet nebula
NGC 3199 is only the fourth Wolf-Rayet nebula to be observed in X-rays. Toala et al. present chemical abundances for this nebula and find that the star that produces it, once considered a runaway star, might not be so far from home after all.
A neutron star in the Eye of Sauron?
Fomalhaut (a.k.a. the Eye of Sauron) has a dusty disk around it and an intriguing speck of light near the edge of the disk. But we don’t exactly know the nature of this object: Could it be… a neutron star?
The Bullet Cluster – A Smoking Gun for Dark Matter!
A classic paper on dark matter is brought to ‘light’ in this bite, discussing a discovery that provides one of the best evidences we have for non-baryonic matter in the universe.