Results 141 to 150 of about 112,522 (249)
Quasar: A Programming Framework for Rapid Prototyping [PDF]
, 2016 We present a new programming framework, Quasar, which facilitates GPU programming. Our high-level programming language relieves the developer of all implementation details such that he can focus on the algorithm and the required accuracy.
De Vylder, Jonas, Goossens, Bart
core +1 more source
On the Role of the Environments and Star Formation for Quasar Activity
Frontiers in Astronomy and Space Sciences, 2017 We investigate the host galaxy and environment properties of a sample of 400 low z (<0.5) quasars that were imaged in the SDSS Stripe82. We can detect and study the properties of the host galaxy for more than 75% of the data sample.
Daniela Bettoni +4 more
doaj +1 more source
Comments on the Redshift Distribution of 44,200 SDSS Quasars: Evidence for Predicted Preferred Redshifts? [PDF]
, 2004 M. B. Bell
openalex +1 more source
, 2002 In an ongoing infrared imaging survey of quasars at Keck Observatory, we have discovered that the z=1.285 quasar SDSS J233646.2-010732.6 comprises two point sources with a separation of 1.67". Resolved spectra show that one component is a standard quasar
Becker, Robert H. +5 more
core +1 more source
Highly Variable Quasar Candidates Selected from 4XMM-DR13 with Machine Learning
The Astrophysical JournalWe present a sample of 12 quasar candidates with highly variable soft X-ray emission, selected from the fourth XMM-Newton Serendipitous Source Catalog (4XMM-DR13), using random forest (RF).
Heng Wang +8 more
doaj +1 more source
Fast Outflow in the Host Galaxy of the Luminous z = 7.5 Quasar J1007+2115
The Astrophysical JournalThe James Webb Space Telescope opens a new window to directly probe luminous quasars powered by billion solar mass black holes in the Epoch of Reionization and their coevolution with massive galaxies with unprecedented details.
Weizhe Liu +26 more
doaj +1 more source
The Astrophysical JournalQuasar feedback may play a key role in the evolution of massive galaxies. The dust-reddened quasar F2M110648.35+480712 at z = 0.4352 is one of the few cases at its redshift that exhibits powerful quasar feedback through bipolar outflows.
Weizhe Liu +29 more
doaj +1 more source
The host galaxies of radio-quiet quasars at ${0.5<}$ z ${<1.0}$ [PDF]
, 2006 T. Hyvönen +4 more
openalex +1 more source
Discovery of the lensed quasar eRASS1 J050129.5-073309 with $\textit{SRG}/$eROSITA and ${\it Gaia}$ [PDF]
, 2023 D. Tubín-Arenas +11 more
openalex +1 more source
THE QSO HE 0450-2958: SCANTILY DRESSED OR HEAVILY ROBED? A NORMAL QUASAR AS PART OF AN UNUSUAL ULIRG [PDF]
, 2009 K. Jahnkę +7 more
openalex +1 more source