3 papers
astro-ph.HE2024
A multi-faceted view of the X-ray spectral variability in Seyfert galaxy Ark 120
Lu-Xin Ren, Jun-Xian Wang, Jia-Lai Kang
Utilizing a range of techniques including multi-band light curves, softness ratio analysis, structure functions, rms spectra, cross-correlation functions, and ratios of spectra fro…
astro-ph.HE2023
On joint analysing XMM-NuSTAR spectra of active galactic nuclei
Jia-Lai Kang, Jun-Xian Wang
A recently released XMM-Newton technical note has revealed a significant calibration issue between NuSTAR and XMM-Newton EPIC, and provided an empirical correction to EPIC effectiv…
astro-ph.HE2023
What can be learnt from a highly informative X-ray occultation event in NGC 6814? A marvellous absorber
Jia-Lai Kang, Jun-Xian Wang, Shu-Qi Fu
A unique X-ray occultation event in NGC 6814 during an XMM-Newton observation in 2016 has been reported, providing useful information of the absorber and the corona. We revisit the…