مورد إلكتروني
MOJAVE: Monitoring of jets in AGN with VLBA experiments. IV. The parent luminosity function of radio-loud blazars
| العنوان: | MOJAVE: Monitoring of jets in AGN with VLBA experiments. IV. The parent luminosity function of radio-loud blazars |
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| المصدر: | Department of Physics and Astronomy Faculty Publications |
| بيانات النشر: | Purdue University 2008-01-01T08:00:00Z |
| تفاصيل مُضافة: | Cara, M. Lister, M. L. |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | We use a complete sample of active galactic nuclei (AGN) selected on the basis of relativistically beamed 15 GHz radio flux density (MOJAVE: Monitoring of Jets in AGN with VLBA Experiments) to derive the parent radio luminosity function (RLF) of bright radio-selected blazar cores. We use a maximum likelihood method to fit a beamed RLF to the observed data and thereby recover the parameters of the intrinsic (unbeamed) RLF. We analyze two sub-samples of the MOJAVE sample: the first contains only objects of known FR II class, with a total of 103 sources, and the second subsample adds 24 objects of uncertain FR class for a total of 127 sources. Both subsamples exclude four known FR I radio galaxies and two gigahertz-peaked spectrum sources. We obtain good fits to both subsamples using a single power law intrinsic RLF and a pure density evolution function of the form z(m)expf{-1/2 [(z - z(0)/sigma(2)]}. We find that a previously reported break in the observed MOJAVE RLF actually arises from using incomplete bins (because of the luminosity cutoff) across a steep and strongly evolving RLF, and does not reflect a break in the intrinsic RLF. The derived space density of the parent population of the FR II sources from the MOJAVE sample (with L-15 GHz >= 1.3 x 10(25) W Hz(-1)) is approximately 1.6 x 10(3) Gpc(-3). |
| مصطلحات الفهرس: | BL Lacertae objects : general;; galaxies : active;; galaxies : evolution;; galaxies : luminosity function, mass function;; quasars : general;; Astronomy & Astrophysics, text |
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| الإتاحة: | Open access content. Open access content |
| ملاحظة: | application/pdf |
| أرقام أخرى: | IPL oai:docs.lib.purdue.edu:physics_articles-2429 1084015026 |
| المصدر المساهم: | PURDUE UNIV From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1084015026 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |