Results 191 to 200 of about 111,241 (293)
Large-scale surveys of the quasar proximity effect
The Open Journal of AstrophysicsThe UV radiation from high redshift quasars causes a local deficit in the neutral hydrogen absorption (Lyman-alpha forest) in their spectra, known as the proximity effect.
Rupert Croft +8 more
doaj +1 more source
An Electrodynamic Model of Radio Galaxies and Quasars [PDF]
, 1970 J. H. Piddington
openalex +1 more source
Resolved structure associated with the quasar PKS 0837 - 12 [PDF]
, 1978 P. A. Wehinger, S. Wyckoff
openalex +1 more source
Long-time-scale optical variability in quasars [PDF]
, 1976 Timothy M. Heckman
openalex +1 more source
A Targeted Search for Variable Gravitationally Lensed Quasars
The Astrophysical JournalWe present a pipeline to identify photometric variability within strong gravitationally lensing candidates, in the Dark Energy Spectroscopic Instrument Legacy Imaging Surveys.
William Sheu +6 more
doaj +1 more source
Quasar Absorption Lines and Radio Polarization [PDF]
, 1970 F. F. Gardner, J. B. Whiteoak
openalex +1 more source
The Astrophysical Journal Supplement SeriesThe Gaia DR3 has provided a large sample of more than 6.6 million quasar candidates with high completeness but low purity. Previous work on the CatNorth quasar candidate catalog has shown that including external multiband data and applying machine ...
Yuming Fu +14 more
doaj +1 more source