Search Publications
Detection of pristine circumstellar material from the Cassiopeia A supernova progenitor
Koo, Bon-Chul; Raymond, John C.; Jaffe, Daniel T. +4 more
Cassiopeia A is a nearby young supernova remnant that provides a unique laboratory for the study of core-collapse supernova explosions1. Cassiopeia A is known to be a type IIb supernova from the optical spectrum of its light echo2, but the immediate progenitor of the supernova remains uncertain3. Here, we report re…
An X-ray detection of star formation in a highly magnified giant arc
Dahle, H.; Rigby, J. R.; Bayliss, M. B. +19 more
In the past decade, our understanding of how stars and galaxies formed during the first 5 billion years after the Big Bang has been revolutionized by observations that leverage gravitational lensing by intervening masses, which act as natural cosmic telescopes to magnify background sources. Previous studies have harnessed this effect to probe the …
X-ray astronomy in 2019
Elvis, Martin
Every 10 years, X-ray astronomers gather in Bologna, Italy, to review the state of the field. After 30 years of these meetings, is there really still a separate field of X-ray astronomy?