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19942024
most citedThe Soft X-Ray Properties of a Complete Sample of Optically Selected Quasars II. Final Results

552 citations · 16.5k across the 268 of their papers we have counts for

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Showing 2019Show all

7 papers · 1 filter

astro-ph.GA2019★ 65 cited

The most luminous blue quasars at . I. A tale of two X-ray populations

E. Nardini, E. Lusso, G. Risaliti +8

(abridged) We present the X-ray analysis of a sample of 30 luminous quasars at with deep XMM-Newton observations, selected from the SDSS-DR7 to be representative o…

astro-ph.HE2019★ 10 cited

The soft X-ray counterpart of Hanny's Voorwerp near IC 2497

G. Fabbiano, M. Elvis

We report the detection in Chandra ACIS archival data of an elongated soft (<3 keV) X-ray feature tp the south of the Compton Thick Active Galactic Nucleus (CT AGN) galaxy IC 2497,…

physics.pop-ph2019

How much of the Solar System should we leave as Wilderness?

Martin Elvis, Tony Milligan

"How much of the Solar System should we reserve as wilderness, off-limits to human development?" We argue that, as a matter of policy, development should be limited to one eighth,…

astro-ph.EP2019★ 4 cited

ASIME 2018 White Paper. In-Space Utilisation of Asteroids: Asteroid Composition -- Answers to Questions from the Asteroid Miners

Amara L. Graps, Angel Abbud-Madrid, Paul Abell +41

In keeping with the Luxembourg government's initiative to support the future use of space resources, ASIME 2018 was held in Belval, Luxembourg on April 16-17, 2018. The goal of ASI…

astro-ph.GA2019

Cosmic evolution of supermassive black holes: A view into the next two decades

Francesca Civano, Nico Cappelluti, Ryan Hickox +38

The discoveries made over the past 20 years by Chandra and XMM-Newton surveys in conjunction with multiwavelength imaging and spectroscopic data available in the same fields have s…

astro-ph.GA2019

Exploring Active Supermassive Black Holes at 100 Micro-arcsecond Resolution

Makoto Kishimoto, Theo ten Brummelaar, Douglas Gies +6

Super-high spatial resolution observations in the infrared are now enabling major advances in our understanding of supermassive black hole systems at the centers of galaxies. Infra…