Dingrong Xiong
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View article: Observatory Science with eXTP
Observatory Science with eXTP Open
Scheduled for launch in 2030, the enhanced X-ray Timing and Polarization (eXTP) telescope is a Chinese space-based mission aimed at studying extreme conditions and phenomena in astrophysics. eXTP will feature three main payloads: Spectrosc…
View article: The relation between black hole spin, star formation rate, and black hole mass for supermassive black holes
The relation between black hole spin, star formation rate, and black hole mass for supermassive black holes Open
Both theoretical models and observational evidence indicate that jets and/or outflows driven by central active supermassive black holes exert a significant feedback effect on the overall properties of their host galaxies. Theoretical model…
View article: The relation between black hole spin, star formation rate, and black hole mass for supermassive black holes
The relation between black hole spin, star formation rate, and black hole mass for supermassive black holes Open
Both theoretical models and observational evidence indicate that jets and/or outflows driven by central active supermassive black holes exert a significant feedback effect on the overall properties of their host galaxies. Theoretical model…
View article: Detection of an Orphan X-ray Flare from a Blazar Candidate EP240709a with Einstein Probe
Detection of an Orphan X-ray Flare from a Blazar Candidate EP240709a with Einstein Probe Open
Blazars are often observed to flare across multiple wavelengths. Orphan flares from blazars have been only detected a few times, providing an opportunity to understand the structure of the jet in the accreting system. We report a remarkabl…
View article: LEIA discovery of the longest-lasting and most energetic stellar X-ray flare ever detected
LEIA discovery of the longest-lasting and most energetic stellar X-ray flare ever detected Open
The Lobster Eye Imager for Astronomy (LEIA) detected a new X-ray transient on 2022 November 7, identified as a superflare event occurring on a nearby K-type giant star HD 251108. The flux increase was also detected in follow-up observation…
View article: General Physical Properties of Gamma-Ray-emitting Radio Galaxies
General Physical Properties of Gamma-Ray-emitting Radio Galaxies Open
We study the radio galaxies with known redshift detected by the Fermi satellite after 10 years of data (4FGL-DR2). We use a one-zone leptonic model to fit the quasi-simultaneous multiwavelength data of these radio galaxies and study the di…
View article: The variability and soft X-ray excess properties of narrow-line Seyfert 1 galaxies: The<i>Swift</i>view
The variability and soft X-ray excess properties of narrow-line Seyfert 1 galaxies: The<i>Swift</i>view Open
We present here a systematic study on the mechanism of the long/short timescale variability and the origin of soft X-ray excess for narrow-line Seyfert 1 galaxies (NLSy1s) based on the multi-epoch multi-band observations of the Swift teles…
View article: Basic properties of Fermi blazars and the ‘blazar sequence’
Basic properties of Fermi blazars and the ‘blazar sequence’ Open
By statistically analysing a large sample that includes Fermi-detected blazars (FBs) and non-Fermi-detected blazars (NFBs), we find that there are significant differences between FBs and NFBs in redshift, black hole mass, jet kinetic power…