Results 231 to 240 of about 85,255 (272)
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Science, 1982
The observed absence of quasar redshifts larger than 3.53 is erroneously attributed to Richard Green and myself in "A boundary for the quasars" (Research News, 22 Jan., p. 388). Our survey of bright quasars does not cover redshifts larger than 2.2 because in choosing candidates we rely on the ultraviolet excess, which tends to disappear at larger ...
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The observed absence of quasar redshifts larger than 3.53 is erroneously attributed to Richard Green and myself in "A boundary for the quasars" (Research News, 22 Jan., p. 388). Our survey of bright quasars does not cover redshifts larger than 2.2 because in choosing candidates we rely on the ultraviolet excess, which tends to disappear at larger ...
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Science, 1964
Rotation in addition to free gravitational motion can produce oscillations in a large spherical mass of gas. The theory may provide an explanation of the variations of brightness in such objects as 3C273.
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Rotation in addition to free gravitational motion can produce oscillations in a large spherical mass of gas. The theory may provide an explanation of the variations of brightness in such objects as 3C273.
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Avoiding Bias in Measurements of Fundamental Constants from High Resolution Quasar Spectra
Universe, 2022J K Webb +2 more
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DPQP: A Detection Pipeline for Quasar Pair Candidates Based on QSO Photometric Images and Spectra
Universe, 2023Yuanbo Liu, A-Li Luo
exaly
Spectroscopic QUasar Extractor and redshift (z) Estimator squeze – I. Methodology
Monthly Notices of the Royal Astronomical Society, 2020Ignasi Pérez-Ràfols +2 more
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