476 citations · 1.4k across the 24 of their papers we have counts for
24 papers
Detection of a Multi-Phase Ultra-Fast Wind in the Narrow-Line Seyfert 1 Galaxy Mrk 1044
Y. Krongold, A. L. Longinotti, M. Santos-Lleo +6
We present a detailed analysis of XMM-Newton X-ray spectra of the Narrow-Line Seyfert 1 galaxy Mrk 1044. We find robust evidence for a multi-phase, ultra-fast outflow, traced by fo…
CIELO-RGS: a catalogue of soft X-ray ionized emission lines
Junjie Mao, J. S. Kaastra, M. Guainazzi +9
High-resolution X-ray spectroscopy has advanced our understanding of the hot Universe by revealing physical properties like kinematics, temperature, and abundances of the astrophys…
The detection and X-ray view of the changing look AGN HE 1136-2304
M. L. Parker, S. Komossa, W. Kollatschny +9
We report the detection of high-amplitude X-ray flaring of the AGN HE 1136-2304, which is accompanied by a strong increase in the flux of the broad Balmer lines, changing its Seyfe…
X-ray high-resolution spectroscopy reveals feedback in a Seyfert galaxy from an ultra fast wind with complex ionization and velocity structure
Anna Lia Longinotti, Yair Krongold, Matteo Guainazzi +5
Winds outflowing from Active Galactic Nuclei (AGNs) may carry significant amount of mass and energy out to their host galaxies. In this paper we report the detection of a sub-relat…
Proving strong magnetic fields near to the central black hole in the quasar PG0043+039 via cyclotron lines
W. Kollatschny, N. Schartel, M. Zetzl +3
The optical luminous quasar PG0043+039 has not been detected before in deep X-ray observations indicating the most extreme optical-to-X-ray slope index of all quasars. Thi…
An X-ray and UV flare from the galaxy XMMSL1 J061927.1-655311
R. D. Saxton, A. M. Read, S. Komossa +6
New high variability extragalactic sources may be identified by comparing the flux of sources seen in the XMM-Newton Slew Survey with detections and upper limits from the ROSAT All…