activity
19982026
most citedX-ray Spectra of a large sample of Quasars with ASCA

405 citations · 3.5k across the 57 of their papers we have counts for

collaborators

48 papers

astro-ph.HE2026

The emergence of X-ray emission lines during relativistic radio-jet formation in the changing-look active galactic nucleus 1ES 1927+654

Dev R. Sadaula, Sibasish Laha, Eileen T. Meyer +27

We present results from a comprehensive multi-wavelength monitoring campaign of the changing-look active galactic nucleus 1ES 1927+654 during the onset and evolution of a relativis…

astro-ph.HE2020★ 26 cited

The flaring X-ray corona in the quasar PDS 456

James Reeves, Valentina Braito, Delphine Porquet +3

New Swift monitoring observations of the variable, radio-quiet quasar, PDS 456, are presented. A bright X-ray flare was captured in September 2018, the flux increasing by a factor…

astro-ph.HE2020★ 56 cited

Resolving the soft X-ray ultra fast outflow in PDS 456

James Reeves, Valentina Braito, George Chartas +3

Past X-ray observations of the nearby luminous quasar PDS 456 (at ) have revealed a wide angle accretion disk wind (Nardini et al. 2015), with an outflow velocity of $\sim…

astro-ph.HE2012★ 31 cited

The Global Implications of the Hard X-ray Excess in Type 1 AGN

M. M. Tatum, T. J. Turner, L. Miller +1

Recent evidence for a strong 'hard excess' of flux at energies > 20 keV in some Suzaku observations of type 1 Active Galactic Nuclei (AGN) has motivated an exploratory study of the…

astro-ph.CO2010★ 24 cited

Suzaku Monitoring of the Seyfert 1 Galaxy NGC5548: Warm Absorber Location and its Implication for Cosmic Feedback

Y. Krongold, M. Elvis, M. Andrade-Velazquez +12

(Abridged) We present a two month Suzaku X-ray monitoring of the Seyfert 1 galaxy NGC 5548. The campaign consists of 7 observations. We analyze the response in the opacity of the g…

astro-ph.HE2009★ 36 cited

Chandra detection of a parsec scale wind in the Broad Line Radio Galaxy 3C 382

J. N. Reeves, R. M. Sambruna, V. Braito +1

We present unambiguous evidence for a parsec scale wind in the Broad-Line Radio Galaxy (BLRG) 3C 382, the first radio-loud AGN, with $R_{\rm L} = \log_{10}(f_{\rm 5GHz}/f_{4400})>1…