activity
19972026
most citedAre the Variations in Quasar Optical Flux Driven by Thermal Fluctuations?

814 citations · 7.4k across the 161 of their papers we have counts for

collaborators
Showing 2020Show all

9 papers · 1 filter

astro-ph.HE2020★ 21 cited

Two Candidate High-Redshift X-ray Jets Without Coincident Radio Jets

Daniel Schwartz, Aneta Siemiginowska, Brad Snios +7

We report the detection of extended X-ray emission from two high-redshift radio quasars. These quasars, J1405+0415 at =3.208 and J1610+1811 at =3.118, were observed in a Chan…

astro-ph.HE2020★ 15 cited

X-ray Properties of Young Radio Quasars at z > 4.5

Bradford Snios, Aneta Siemiginowska, Małgosia Sobolewska +6

We present a comprehensive analysis of Chandra X-ray observations of 15 young radio quasars at redshifts . All sources are detected in the keV energy band.…

astro-ph.GA2020★ 14 cited

Powerful ionized gas outflows in the interacting radio galaxy 4C +29.30

Guilherme S. Couto, Thaisa Storchi-Bergmann, Aneta Siemiginowska +2

We investigate the ionized gas excitation and kinematics in the inner kpc of the merger radio galaxy 4C +29.30. Using optical integral field spectroscopy wit…

astro-ph.HE2020★ 27 cited

Inverse-Compton scattering in the resolved jet of the high-redshift quasar PKS J1421-0643

D. M. Worrall, M. Birkinshaw, H. L. Marshall +3

Despite the fact that kpc-scale inverse-Compton (iC) scattering of cosmic microwave background (CMB) photons into the X-ray band is mandated, proof of detection in resolved quasar…

astro-ph.GA2020★ 33 cited

TXS 0128+554: A Young Gamma-Ray Emitting AGN With Episodic Jet Activity

M. L. Lister, D. C. Homan, Y. Y. Kovalev +3

We have carried out a Chandra X-ray and multi-frequency radio VLBA study of the AGN TXS 0128+554, which is associated with the Fermi gamma-ray source 4FGL J0131.2+5547. The AGN is…

astro-ph.HE2020★ 3 cited

Chandra View of the LINER-type Nucleus in the Radio-Loud Galaxy CGCG 292-057: Ionized Iron Line and Jet-ISM Interactions

K. Balasubramaniam, L. Stawarz, V. Marchenko +5

We present an analysis of the new, deep (94\,ksec) {\it Chandra} ACIS-S observation of radio-loud active galaxy CGCG\,292057, characterized by a LINER-type nucleus and a complex…