J/ApJ/818/187ivo://CDS.VizieR/J/ApJ/818/187doi:10.26093/cds/vizier.18180187CDSInoue Y.Tanaka Y.T.2017-06-21T08:21:57Z2016-05-31T12:44:40ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgamma-ray-astronomyactive-galactic-nucleiThe Fermi gamma-ray space telescope has revolutionized our understanding of the cosmic gamma-ray background radiation in the GeV band. However, investigation on the cosmic TeV gamma-ray background radiation still remains sparse. Here, we report the lower bound on the cosmic TeV gamma-ray background spectrum placed by the cumulative flux of individual detected extragalactic TeV sources including blazars, radio galaxies, and starburst galaxies. The current limit on the cosmic TeV gamma-ray background above 0.1TeV is obtained as 2.8x10^-8^(E/100GeV)^-0.55^exp(-E/2100GeV)[GeV/cm2/s/sr] <E^2^dN/dE<1.1x10^-7^(E/100GeV)^-0.49^[GeV/cm2/s/sr], where the upper bound is set by requirement that the cascade flux from the cosmic TeV gamma-ray background radiation can not exceed the measured cosmic GeV gamma-ray background spectrum. Two nearby blazars, Mrk421 and Mrk501, explain ~70% of the cumulative background flux at 0.8-4TeV, while extreme blazars start to dominate at higher energies. We also provide the cumulative background flux from each population, i.e., blazars, radio galaxies, and starburst galaxies which will be the minimum requirement for their contribution to the cosmic TeV gamma-ray background radiation.2016ApJ...818..187Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/818/187CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/222/5 : The second Fermi-LAT >50GeV catalog (2FHL) (Ackermann+, 2016)J/ApJS/218/23 : Fermi LAT third source catalog (3FGL) (Acero+, 2015)J/ApJ/799/86 : Diffuse gamma-ray emission 0.1-820GeV (Ackermann+, 2015)J/ApJ/780/73 : Redshifts of BL Lac objects from Fermi (Ajello+, 2014)J/ApJS/207/16 : BL Lac candidates for TeV observations (Massaro+, 2013)J/A+A/542/A94 : 1RXSJ101015.9-311909 VHE gamma-ray emission (HESS+, 2012)J/ApJ/722/520 : Gamma-ray light curves of Fermi blazars (Abdo+, 2010)J/A+A/410/813 : 2001 Flare of Mkn 421 in gamma-ray (Aharonian+ 2003)J/A+A/406/L9 : TeV Gamma-Rays from 1ES1959+650 (Aharonian+, 2003)J/A+A/390/39 : HEGRA AIROBICC gamma radiation above 15 TeV (Aharonian+, 2002)http://tevcat.uchicago.edu/ : TeVCat online gamma-ray cataloghttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/818/187https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/818/187http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/818/187https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/818/187https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/818/187http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/818/187GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/818/187/table1 (Extragalactic TeV gamma-ray objects at |b|>=10{deg})https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/818/187/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/818/187/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/818/187/table1?GETtext/xml+votable180.050000true3.48-18.90.0055555555555555566/398 615 1701 2414 5423 6018 6647 7038 7606 7896 8915 9612 10605 13705 13927 15969 16447 16655 16806 17843 20624 23134 25132 27765 28517 31663 36059 36342 38797 43262 43603 44247 47014 47375https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/818/187?format=asciiGamma-raydefaultJ/ApJ/818/187/table2The lower bound on the cosmic TeV gamma-ray background spectrumrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEnergy[0.2/13000] Energy binGeVem.energydoubleFluxLower bound fluxGeV.cm**-2.s**-1.sr**-1phot.flux.density;em.gamma.hardfloate_FluxLower uncertainty in FluxGeV.cm**-2.s**-1.sr**-1stat.error;phot.fluxfloatE_FluxUpper uncertainty in FluxGeV.cm**-2.s**-1.sr**-1stat.error;stat.maxfloatJ/ApJ/818/187/table1Extragalactic TeV gamma-ray objects at |b|>=10{deg}NameSource identifiermeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatClassObject classification ("blazar", "radio galaxy" or "starburst galaxy")meta.code.class;src.classchar3FGL3FGL name (JHHMM.m+DDMM)meta.idcharAuthFirst author's name of the referencemeta.bib.authorcharBibCodeBibcode of the referencemeta.bib.bibcodecharSimbadSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDSmeta.ref.urlchar