576 citations · 1.3k across the 35 of their papers we have counts for
8 papers · 1 filter
The X-ray variation of M81* resolved by Chandra and NuSTAR
S. Niu, F. G. Xie, Q. D. Wang +3
Despite advances in our understanding of low luminosity active galactic nuclei (LLAGNs), the fundamental details about the mechanisms of radiation and flare/outburst in hot accreti…
Joint Fit of Warm Absorbers in COS & HETG Spectra of NGC 3783
Xiao-Dan Fu, Shui-Nai Zhang, Wei Sun +2
Warm Absorbers (WAs), as an important form of AGN outflows, show absorption in both UV and X-ray band. Using XSTAR generated photoionization models, for the first time we present a…
Disc-corona interaction in the heartbeat state of GRS 1915+105
Shu-Ping Yan, Li Ji, Si-Ming Liu +10
Timing analysis provides information about the dynamics of matter accreting on to neutron stars and black holes, and hence is crucial for studying the physics of the accretion flow…
A timing view of the heartbeat state of GRS 1915+105
Shu-Ping Yan, Li Ji, Mariano Méndez +10
We present a timing analysis of two Rossi X-ray Timing Explorer observations of the microquasar GRS 1915+105 during the heartbeat state. The phase-frequency-power maps show that th…
Dissecting X-ray-emitting Gas around the Center of our Galaxy
Q. D. Wang, M. A. Nowak, S. B. Markoff +16
Most supermassive black holes (SMBHs) are accreting at very low levels and are difficult to distinguish from the galaxy centers where they reside. Our own Galaxy's SMBH provides a…
Updated Atomic Data and Calculations for X-ray Spectroscopy
A. R. Foster, L. Ji, R. K. Smith +1
We describe the latest release of AtomDB, version 2.0.2, a database of atomic data and a plasma modeling code with a focus on X-ray astronomy. This release includes several major u…