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Luminosity and spectral evolution of QSOs

Title
Luminosity and spectral evolution of QSOs
Authors
Choi Y.Yang J.Yi I.
Ewha Authors
양종만
SCOPUS Author ID
양종만scopus
Issue Date
1999
Journal Title
Journal of the Korean Physical Society
ISSN
0374-4884JCR Link
Citation
vol. 34, no. 3, pp. L199 - L202
Indexed
SCI; SCIE; SCOPUS; KCI WOS scopus
Abstract
We apply the observed spectral states of the Galactic black hole candidates (GBHCs) to the quasi-stellar object (QSO) luminosity evolution based on the correlation between luminosity and the spectrum, which is strongly supported by the similarities of emission mechanisms in GBHCs and QSOs. We derive the QSO luminosity evolution trends in the UV/optical and the X-ray energy bands and demonstrate that their trends are significantly affected by the spectral evolution. Each energy band shows distinct evolution properties. We test one of the widely discussed cosmological evolution scenarios of QSOs, in which QSOs evolve as a single long-lived population, and show that the resulting luminosity functions seen in different energy bands exhibit distinguishable and potentially observable evolution signatures in the X-ray energy bands.
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자연과학대학 > 물리학전공 > Journal papers
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