Constraining the AGN Luminosity Function from JWST with the X-Ray Background

被引：5

作者：

Padmanabhan, Hamsa ^{[1
]}

Loeb, Abraham ^{[2
]}

机构：

[1] Univ Geneva, Dept Phys Theor, 24 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland

[2] Harvard Univ, Astron Dept, 60 Garden St, Cambridge, MA 02138 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2023年 / 958卷 / 01期

基金：

瑞士国家科学基金会;

关键词：

ACTIVE GALACTIC NUCLEI; BLACK-HOLE; 1ST; GALAXIES; QUASAR; EVOLUTION; DISCOVERY; SPECTRUM; MODEL;

D O I：

10.3847/2041-8213/ad09ac

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We predict the X-ray background (XRB) expected from the population of quasars detected by the James Webb Space Telescope spectroscopic surveys over the redshift range z similar to 4-7. We find that the measured UV emissivities imply a similar to 10 times higher unresolved XRB than constrained by current experiments. We illustrate the difficulty of simultaneously matching the faint end of the quasar luminosity function and the XRB constraints. We discuss possible origins and consequences of this discrepancy.

引用

页数：5

共 50 条

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