Gamma-ray luminosity function of BL Lac objects and contribution to the extragalactic gamma-ray background

Abstract

Using a significantly enlarged \textit{Fermi}-LAT BL Lac objects (BL Lacs) sample, we construct the gamma-ray luminosity function (GLF) of BL Lacs, by the joint use of the space density distribution and source counts distribution. We use three well-studied forms of the GLF, i.e., the forms of pure density evolution (PDE), pure luminosity evolution (PLE) and luminosity-dependent density evolution (LDDE). The Markov Chain Monte Carlo (MCMC) technique is used to constrain model parameters. Our results suggest that LDDE model can give the best description for the BL Lac GLF. And the model shows that the BL Lacs with a harder GeV spectrum and a less luminosity evolve as strongly as FSRQs, and the evolution decreases as increasing luminosity. We also model the average photon spectra of BL Lacs with a double power laws model. Using this modeled spectra, BL Lacs contribute $\sim 20\%$ of the total extragalactic gamma-ray background (EGB) at $E>100$ MeV, $\sim 100\%$ of the EGB at $E>50$ GeV, and the unresolved BL Lacs contribute $\sim 20\%$ of the isotropic diffuse gamma-ray background (IGRB) at $E>100$ MeV. A prediction of the TeV EGB spectra are given, which may be tested by the future detectors.

arXiv comment9 pages, 5 figures, Accepted for publication in MNRAS

References in corpus (41)

• Supersymmetric Dark Matter
• Information criteria for astrophysical model selection
• The spectrum of isotropic diffuse gamma-ray emission between 100 MeV and 820 GeV
• EGRET Observations of the Extragalactic Gamma Ray Emission
• Modeling the Extragalactic Background Light from Stars and Dust
• The Spectrum of the Isotropic Diffuse Gamma-Ray Emission Derived From First-Year Fermi Large Area Telescope Data
• The Third Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope
• GeV Observations of Star-forming Galaxies with \textit{Fermi} LAT
• A new determination of the extragalactic diffuse gamma-ray background from EGRET data
• Cosmological dark matter annihilations into gamma-rays - a closer look
• The radio luminosity function from the low-frequency 3CRR, 6CE & 7CRS complete samples
• The Cosmic Evolution of Fermi BL Lacertae Objects
• The Fermi blazars divide
• The Luminosity Function of Fermi-detected Flat-Spectrum Radio Quasars
• Spectroscopy of The Largest Ever Gamma-ray Selected BL Lac Sample
• The Fermi-LAT high-latitude Survey: Source Count Distributions and the Origin of the Extragalactic Diffuse Background
• The Origin of the Extragalactic Gamma-Ray Background and Implications for Dark-Matter Annihilation
• The Evolution of Swift/BAT blazars and the origin of the MeV background
• Resolving the Extragalactic $\gamma$-ray Background above 50 GeV with Fermi-LAT
• The Gamma-Ray Background from Blazars: A New Look
• Diffuse $\gamma$-ray emission from misaligned active galactic nuclei
• Composition of the Fermi-LAT isotropic gamma-ray background intensity: Emission from extragalactic point sources and dark matter annihilations
• Components of the Extragalactic Gamma Ray Background
• BL Lacertae objects beyond redshift 1.3 - UV-to-NIR photometry and photometric redshift for Fermi/LAT blazars
• Planck 2013 results. XXXI. Consistency of the Planck data
• Diffuse $\gamma$-ray emission from unresolved BL Lac objects
• Emitting electrons spectra and acceleration processes in the jet of Mrk 421: from low state to giant flare state
• The diffuse gamma-ray flux associated with sub-PeV/PeV neutrinos from starburst galaxies
• Modeling the Multi-Wavelength Emission of Shell-Type Supernova Remnant RX J1713.7-3946
• CosRayMC: a global fitting method in studying the properties of the new sources of cosmic e${}^{\pm }$ excesses
• Cosmogenic gamma-rays and the composition of cosmic rays
• Ultra-High Energy Cosmic Rays and the GeV-TeV Diffuse Gamma-Ray Flux
• Star-Forming Galaxies Significantly Contribute to the Isotropic Gamma-Ray Background
• Deriving the contribution of blazars to the Fermi-LAT Extragalactic $\gamma$-ray background at $E>10$ GeV with efficiency corrections and photon statistics
• The Luminosity Function and Formation Rate of A Complete Sample of Long Gamma-Ray Bursts
• Fermi-LAT gamma-ray anisotropy and intensity explained by unresolved Radio-Loud Active Galactic Nuclei
• The Extragalactic Gamma-Ray Background from Core Dominated Radio Galaxies
• A mixture evolution scenario of the AGN radio luminosity function. II. Do low- and high-power radio-loud AGNs evolve differently?
• Lepton Models for TeV Emission from SNR RX J1713.7-3946
• The contribution from blazar cascade emission to the extragalactic gamma-ray background: What a role does the extragalactic magnetic field play?
• Effect of spectral index distribution on estimating the AGN radio luminosity function

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• PeV-EeV neutrinos from gamma-ray blazars due to ultrahigh-energy cosmic-ray propagation
• Constraints on ultracompact minihalos from the extragalactic gamma-ray background observation
• High-Energy Neutrino Fluxes from Hard-TeV BL Lacs
• Luminosity Function of collapsar Gamma-Ray Bursts:the Progenitor of Long Gamma-Ray Bursts Is Not Singular
• Source Count Distribution of Fermi LAT Gamma-Ray Blazars Using Novel Nonparametric Methods
• The redshift evolution of the luminosity function of type II GRBs
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