121 citations · 1k across the 48 of their papers we have counts for
33 papers · 1 filter
Prospects for Time-Domain and Multi-Messenger Science with eXTP
Shu-Xu Yi, Wen Zhao, Ren-Xin Xu +75
In this new era of time-domain and multi-messenger astronomy, various new transients and new phenomena are constantly being discovered thanks to the rapid advances in observations,…
Dimming of Continuum Captured in Mrk 841: New Clues on the Nature of the Soft X-ray Excess
Missagh Mehdipour, Gerard Kriss, Jelle Kaastra +2
We report on a remarkable change in the spectral energy distribution (SED) of Mrk 841, providing new insights on how the soft X-ray excess emission in active galactic nuclei (AGNs)…
XMM-Newton Reflection Grating Spectrometer
Junjie Mao, Frits Paerels, Matteo Guainazzi +1
The past two decades have witnessed the rapid growth of our knowledge of the X-ray Universe thanks to flagship X-ray space observatories like XMM-Newton and Chandra. A significant…
The Collisional and Photoionized Plasma in the Polarized NLS1 galaxy Mrk 1239
Margaret Z. Buhariwalla, Luigi C. Gallo, J. Mao +4
Mrk 1239 is a highly polarized NLS1 in the optical band, whose keV spectrum has remained remarkably consistent over more than two decades of observation. Previous analysis…
Multi-wavelength observations of the obscuring wind in the radio-quiet quasar MR 2251-178
Junjie Mao, G. A. Kriss, H. Landt +11
Obscuring winds driven away from active supermassive black holes are rarely seen due to their transient nature. They have been observed with multi-wavelength observations in a few…
10-Year Transformation of the Obscuring Wind in NGC 5548
Missagh Mehdipour, Gerard A. Kriss, Elisa Costantini +4
A decade ago the archetypal Seyfert-1 galaxy NGC 5548 was discovered to have undergone major spectral changes. The soft X-ray flux had dropped by a factor of 30 while new broad and…