Cosmological tests with the FSRQ gamma-ray luminosity function
文献类型：期刊论文
| 作者 | Zeng, Houdun; Melia, Fulvio; Zhang, Li |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2016 |
| 卷号 | 462期号:3页码:3094-3103 |
| 英文摘要 | The extensive catalogue of gamma-ray selected flat-spectrum radio quasars (FSRQs) produced by Fermi during a four-year survey has generated considerable interest in determining their gamma-ray luminosity function (GLF) and its evolution with cosmic time. In this paper, we introduce the novel idea of using this extensive database to test the differential volume expansion rate predicted by two specific models, the concordance Lambda cold darkmatter (Lambda CDM) and R-h = ct cosmologies. For this purpose, we use two well-studied formulations of the GLF, one based on pure luminosity evolution (PLE) and the other on a luminosity-dependent density evolution (LDDE). Using a Kolmogorov-Smirnov test on one-parameter cumulative distributions (in luminosity, redshift, photon index and source count), we confirm the results of earlier works showing that these data somewhat favour LDDE over PLE; we show that this is the case for both Lambda CDM and R-h = ct. Regardless of which GLF one chooses, however, we also show that model selection tools very strongly favour R-h = ct over Lambda CDM. We suggest that such population studies, though featuring a strong evolution in redshift, may none the less be used as a valuable independent check of other model comparisons based solely on geometric considerations. |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/16859]  |
| 专题 | 紫金山天文台_南极天文中心 |
| 推荐引用方式 GB/T 7714 | Zeng, Houdun,Melia, Fulvio,Zhang, Li. Cosmological tests with the FSRQ gamma-ray luminosity function[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,462(3):3094-3103. |
| APA | Zeng, Houdun,Melia, Fulvio,&Zhang, Li.(2016).Cosmological tests with the FSRQ gamma-ray luminosity function.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,462(3),3094-3103. |
| MLA | Zeng, Houdun,et al."Cosmological tests with the FSRQ gamma-ray luminosity function".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 462.3(2016):3094-3103. |
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来源：紫金山天文台
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