Results 211 to 214 of about 515 (214)

The Space Distribution of Quasars

Annual Review of Astronomy and Astrophysics, 1990
exaly  

Mid-infrared luminous quasars in the GOODS–Herschelfields: a large population of heavily obscured, Compton-thick quasars atz≈ 2

Monthly Notices of the Royal Astronomical Society, 2016
James Mullaney, Emanuele Daddi, D M Alexander   +2 more
exaly  

The double quasar 0957+561 A, B: a gravitational lens?

Uspekhi Fizicheskih Nauk, 1981
openaire   +1 more source

Constraining Ω0with the Angular Size–Redshift Relation of Double‐lobed Quasars in the FIRST Survey

Astrophysical Journal, 1998
exaly