152 citations · 307 across the 8 of their papers we have counts for
8 papers
The 2175 Angstrom Interstellar Extinction Bump: Is the Wavelength Variable?
Qian Wang, X. J. Yang, Aigen Li
The most striking characteristics of the mysterious 2175 Angstrom extinction bump, the strongest spectroscopic absorption feature seen on the interstellar extinction curve, are the…
Deprojecting galaxy-cluster cold fronts: evidence for bulk, magnetised spiral flows
Yossi Naor, Uri Keshet, Qian Wang +1
Tangential discontinuities known as cold fronts (CFs) are abundant in groups and clusters of galaxies (GCs). The relaxed, spiral-type CFs were initially thought to be isobaric, but…
Physics of cosmic plasmas from high angular resolution X-ray imaging of galaxy clusters
Maxim Markevitch, Esra Bulbul, Eugene Churazov +15
Galaxy clusters are massive dark matter-dominated systems filled with X-ray emitting, optically thin plasma. Their large size and relative simplicity (at least as astrophysical obj…
A Deep X-Ray Look At Abell 2142 --- Viscosity Constraints From Kelvin-Helmholtz Eddies, A Displaced Cool Peak That Makes A Warm Core, And A Possible Plasma Depletion Layer
Qian Wang, Maxim Markevitch
We analyzed 200 ks of Chandra ACIS observations of the merging galaxy cluster A2142 to examine its prominent cold fronts in detail. We find that the southern cold front exhibits we…
Bow shock in merging cluster A520: the edge of the radio halo and the electron-ion equilibration timescale
Qian Wang, Simona Giacintucci, Maxim Markevitch
We studied the prominent bow shock in the merging galaxy cluster A520 using a deep Chandra X-ray observation and archival VLA radio data. This shock is a useful diagnostic tool, ow…
Atmospheric gas dynamics in the Perseus cluster observed with Hitomi
Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +195
Extending the earlier measurements reported in Hitomi collaboration (2016, Nature, 535, 117), we examine the atmospheric gas motions within the central 100~kpc of the Perseus clust…
The merging galaxy cluster A520 --- a broken-up cool core, a dark subcluster, and an X-ray channel
Qian Wang, Maxim Markevitch, Simona Giacintucci
We present results from a deep Chandra X-ray observation of a merging galaxy cluster A520. A high-resolution gas temperature map, after the subtraction of the cluster-scale emissio…
The Initial-Final Mass Relation among White Dwarfs in Wide Binaries
Jingkun Zhao, Terry D. Oswalt, Lee Anne Willson +2
We present the initial-final mass relation derived from 10 white dwarfs in wide binaries that consist of a main sequence star and a white dwarf. The temperature and gravity of each…