2 papers
astro-ph.HE2021
Probing the disk-corona systems and broad line regions of changing-look quasars with X-ray and optical observations
Xiangyu Jin, John J. Ruan, Daryl Haggard +8
"Changing-look" quasars are a new class of highly variable active galactic nuclei that have changed their spectral type over surprisingly short timescales of just a few years. The…
astro-ph.GA2020
Thermally Unstable Cooling Stimulated by Uplift: The Spoiler Clusters
C. G. Martz, B. R. McNamara, P. E. J. Nulsen +9
We analyzed Chandra X-ray observations of five galaxy clusters whose atmospheric cooling times, entropy parameters, and cooling time to free-fall time ratios within the central gal…