activity
20092026
most citedDiscovery of a relation between black hole mass and soft X-ray time lags in active galactic nuclei

270 citations · 2.2k across the 64 of their papers we have counts for

collaborators
Showing 2018Show all

6 papers · 1 filter

astro-ph.HE2018★ 44 cited

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…

astro-ph.HE2018★ 31 cited

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…

astro-ph.HE2018★ 44 cited

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.…

astro-ph.GA2018★ 39 cited

Multi-wavelength campaign on NGC 7469 IV. The broad-band X-ray spectrum

R. Middei, S. Bianchi, M. Cappi +17

We conducted a multi-wavelength six-month campaign to observe the Seyfert galaxy NGC~7469, using the space-based observatories \textit{HST}, \textit{Swift}, \textit{XMM-Newton} and…

astro-ph.HE2018★ 31 cited

Characterization of the Infrared/X-ray sub-second variability for the black-hole transient GX 339-4

F. M. Vincentelli, P. Casella, T. J. Maccarone +7

We present a detailed analysis of the X-ray/IR fast variability of the Black-Hole Transient GX 339-4 during its low/hard state in August 2008. Thanks to simultaneous high time-reso…

astro-ph.HE2018★ 20 cited

Yet another UFO in the X-ray spectrum of a high-z lensed QSO

M. Dadina, C. Vignali, M. Cappi +6

Ultra-fast outflows (UFO) appear to be common in local active galactic nuclei (AGN) and may be powerful enough (1\% of L) to effectively quench the sta…