93 citations · 449 across the 19 of their papers we have counts for
10 papers · 1 filter
Detection of an Unidentified Soft X-ray Emission Feature in NGC 5548
Liyi Gu, Junjie Mao, Jelle S. Kaastra +17
NGC~5548 is an X-ray bright Seyfert 1 active galaxy. It exhibits a variety of spectroscopic features in the soft X-ray band, including in particular the absorption by the AGN outfl…
Simultaneous Millimeter-wave and X-ray monitoring of the Seyfert Galaxy NGC 7469
Ehud Behar, Shai Kaspi, Gabriel Paubert +6
We report on daily monitoring of the Seyfert galaxy NGC 7469, around 95 GHz and 143 GHz, with the IRAM 30 m radio telescope, and with the Swift X-Ray and UV/Optical telescopes, ove…
Photoionized emission and absorption features in the high-resolution X-ray spectra of NGC 3783
Junjie Mao, M. Mehdipour, J. S. Kaastra +14
Our Swift monitoring program triggered two joint XMM-Newton, NuSTAR and HST observations on 11 and 21 December 2016 targeting NGC 3783, as its soft X-ray continuum was heavily obsc…
Recurring obscuration in NGC 3783
J. S. Kaastra, M. Mehdipour, E. Behar +14
Obscuration of the continuum emission from active galactic nuclei by streams of gas with relatively high velocity (> 1000 km/s) and column density (>3E25 per m2) has been seen in a…
Multi-wavelength campaign on NGC 7469: III. Spectral energy distribution and the AGN wind photoionisation modelling, plus detection of diffuse X-rays from the starburst with Chandra HETGS
M. Mehdipour, J. S. Kaastra, E. Costantini +15
We investigate the physical structure of the AGN wind in the Seyfert-1 galaxy NGC 7469 through high-resolution X-ray spectroscopy with Chandra HETGS and photoionisation modelling.…
Multi-wavelength campaign on NGC7469 II. Column densities and variability in the X-ray spectrum
U. Peretz, E. Behar, G. A. Kriss +16
We investigate the ionic column density variability of the ionized outflows associated with NGC7469, to estimate their location and power. This could allow a better understan…