Five years of blazar observations with VERITAS

DOI

Between the beginning of its full-scale scientific operations in 2007 and 2012, the VERITAS Cherenkov telescope array observed more than 130 blazars; of these, 26 were detected as very-high-energy (VHE; E>100 GeV) {gamma}-ray sources. In this work, we present the analysis results of a sample of 114 undetected objects. The observations constitute a total live-time of ~570 hr. The sample includes several unidentified Fermi-Large Area Telescope (LAT) sources (located at high Galactic latitude) as well as all the sources from the second Fermi-LAT catalog (Nolan et al. 2012, J/ApJS/199/31) that are contained within the field of view of the VERITAS observations. We have also performed optical spectroscopy measurements in order to estimate the redshift of some of these blazars that do not have spectroscopic distance estimates. We present new optical spectra from the Kast instrument on the Shane telescope at the Lick observatory for 18 blazars included in this work, which allowed for the successful measurement or constraint on the redshift of four of them. For each of the blazars included in our sample, we provide the flux upper limit in the VERITAS energy band. We also study the properties of the significance distributions and we present the result of a stacked analysis of the data set, which shows a 4{sigma} excess.

Cone search capability for table J/AJ/151/142/table2 (List of Known VHE Sources Observed but Not Detected by VERITAS in 2007-2012)

Cone search capability for table J/AJ/151/142/table3 (List of 2FGL Sources in the VERITAS Field of View of Sources Listed in Tables 1 and 2)

Cone search capability for table J/AJ/151/142/table4 (Analysis Results and Flux Upper Limits for the Non-detected AGNs Observed by VERITAS)

Cone search capability for table J/AJ/151/142/table5 (Results and Upper Limits for the Known VHE Sources)

Cone search capability for table J/AJ/151/142/table6 (Results and Upper Limits for the 2FGL Sources in the VERITAS Field of View)

Cone search capability for table J/AJ/151/142/table1 (List of Sources Observed by VERITAS)

Identifier
DOI http://doi.org/10.26093/cds/vizier.51510142
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/AJ/151/142
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/151/142
Related Identifier https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/151/142
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/AJ/151/142
Provenance
Creator Archambault S.; Archer A.; Benbow W.; Bird R.; Biteau J.; Buchovecky M.,Buckley J.H.; Bugaev V.; Byrum K.; Cerruti M.; Chen X.; Ciupik L.,Connolly M.P.; Cui W.; Eisch J.D.; Errando M.; Falcone A.; Feng Q.,Finley J.P.; Fleischhack H.; Fortin P.; Fortson L.; Furniss A.,Gillanders G.H.; Griffin S.; Grube J.; Gyuk G.; Hutten M.; Hakansson N.,Hanna D.; Holder J.; Humensky T.B.; Johnson C.A.; Kaaret P.; Kar P.,Kelley-Hoskins N.; Kertzman M.; Kieda D.; Krause M.; Krennrich F.,Kumar S.; Lang M.J.; Maier G.; McArthur S.; McCann A.; Meagher K.,Moriarty P.; Mukherjee R.; Nguyen T.; Nieto D.; O'Faolain de Bhroithe A.,Ong R.A.; Otte A.N.; Park N.; Perkins J.S.; Pichel A.; Pohl M.; Popkow A.,Pueschel E.; Quinn J.; Ragan K.; Reynolds P.T.; Richards G.T.; Roache E.,Rovero A.C.; Santander M.; Sembroski G.H.; Shahinyan K.; Smith A.W.,Staszak D.; Telezhinsky I.; Tucci J.V.; Tyler J.; Vincent S.; Wakely S.P.,Weiner O.M.; Weinstein A.; Williams D.A.; Zitzer B.,(the the Veritas collaboration); Fumagalli M.; Prochaska J.X.
Publisher CDS
Publication Year 2018
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Cosmology; Galactic and extragalactic Astronomy; High Energy Astrophysics; Interdisciplinary Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy