UPPER LIMITS FROM FIVE YEARS OF BLAZAR OBSERVATIONS WITH THE VERITAS CHERENKOV TELESCOPES

S Archambault; A Archer; W Benbow; R Bird; J Biteau; M Buchovecky; J. H Buckley; V Bugaev; K Byrum; M Cerruti; X Chen; L Ciupik; M. P Connolly; W Cui; J. D Eisch; M Errando; A Falcone; Q Feng; J. P Finley; H Fleischhack; P Fortin; L Fortson; A Furniss; G. H Gillanders; S Griffin; J Grube; G Gyuk; M Hütten; N Håkansson; D Hanna; J Holder; T. B Humensky; C. A Johnson; P Kaaret; P Kar; N Kelley-Hoskins; M Kertzman; D Kieda; M Krause; F Krennrich; S Kumar; M. J Lang; G Maier; S McArthur; A McCann; K Meagher; P Moriarty; R Mukherjee; T Nguyen; D Nieto; A O'Faoláin de Bhróithe; R. A Ong; A. N Otte; N Park; J. S Perkins; A Pichel; M Pohl; A Popkow; E Pueschel; J Quinn; K Ragan; P. T Reynolds; G. T Richards; E Roache; A. C Rovero; M Santander; G. H Sembroski; K Shahinyan; A. W Smith; D Staszak; I Telezhinsky; J. V Tucci; J Tyler; S Vincent; S. P Wakely; O. M Weiner; A Weinstein; D. A Williams; B Zitzer; M Fumagalli; J. X Prochaska; VERITAS Collaboration

doi:10.3847/0004-6256/151/6/142

Back

UPPER LIMITS FROM FIVE YEARS OF BLAZAR OBSERVATIONS WITH THE VERITAS CHERENKOV TELESCOPES

Journal article

Open access

UPPER LIMITS FROM FIVE YEARS OF BLAZAR OBSERVATIONS WITH THE VERITAS CHERENKOV TELESCOPES

S Archambault, A Archer, W Benbow, R Bird, J Biteau, M Buchovecky, J. H Buckley, V Bugaev, K Byrum, M Cerruti, …

The Astronomical journal, Vol.151(6), p.142

05/18/2016

DOI: 10.3847/0004-6256/151/6/142

Files and links (1)

url

https://doi.org/10.3847/0004-6256/151/6/142View

Published (Version of record) Open Access

Abstract

ABSTRACT 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) γ-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 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 excess.

BL Lacertae objects: general

galaxies: active

gamma rays: galaxies

radiation mechanisms: non-thermal

Details

Title: Subtitle: UPPER LIMITS FROM FIVE YEARS OF BLAZAR OBSERVATIONS WITH THE VERITAS CHERENKOV TELESCOPES
Creators: S Archambault - McGill University
A Archer - University of Washington
W Benbow - Harvard University
R Bird - University College Dublin
J Biteau - University of California, Santa Cruz
M Buchovecky - University of California, Berkeley
J. H Buckley - University of Washington
V Bugaev - University of Washington
K Byrum - Argonne National Laboratory
M Cerruti - Harvard University
X Chen - DESY, Platanenallee 6, D-15738 Zeuthen, Germany
L Ciupik - Adler Planetarium
M. P Connolly - Ollscoil na Gaillimhe – University of Galway
W Cui - Purdue University West Lafayette
J. D Eisch - Iowa State University
M Errando - Columbia University
A Falcone - Pennsylvania State University
Q Feng - Purdue University West Lafayette
J. P Finley - Purdue University West Lafayette
H Fleischhack - DESY, Platanenallee 6, D-15738 Zeuthen, Germany
P Fortin - Harvard University
L Fortson - University of Minnesota
A Furniss - California State University, East Bay
G. H Gillanders - Ollscoil na Gaillimhe – University of Galway
S Griffin - McGill University
J Grube - Adler Planetarium
G Gyuk - Adler Planetarium
M Hütten - DESY, Platanenallee 6, D-15738 Zeuthen, Germany
N Håkansson - University of Potsdam
D Hanna - McGill University
J Holder - University of Delaware
T. B Humensky - Columbia University
C. A Johnson - University of California, Santa Cruz
P Kaaret - University of Iowa
P Kar - University of Utah
N Kelley-Hoskins - DESY, Platanenallee 6, D-15738 Zeuthen, Germany
M Kertzman - DePauw University
D Kieda - University of Utah
M Krause - DESY, Platanenallee 6, D-15738 Zeuthen, Germany
F Krennrich - Iowa State University
S Kumar - University of Delaware
M. J Lang - Ollscoil na Gaillimhe – University of Galway
G Maier - DESY, Platanenallee 6, D-15738 Zeuthen, Germany
S McArthur - Purdue University West Lafayette
A McCann - McGill University
K Meagher - Georgia Institute of Technology
P Moriarty - Ollscoil na Gaillimhe – University of Galway
R Mukherjee - Columbia University
T Nguyen - Georgia Institute of Technology
D Nieto - Columbia University
A O'Faoláin de Bhróithe - DESY, Platanenallee 6, D-15738 Zeuthen, Germany
R. A Ong - University of California, Berkeley
A. N Otte - Georgia Institute of Technology
N Park - University of Chicago
J. S Perkins - Goddard Space Flight Center
A Pichel - Universidad de Buenos Aires
M Pohl - DESY, Platanenallee 6, D-15738 Zeuthen, Germany
A Popkow - University of California, Berkeley
E Pueschel - University College Dublin
J Quinn - University College Dublin
K Ragan - McGill University
P. T Reynolds - Cork Institute of Technology
G. T Richards - Georgia Institute of Technology
E Roache - Harvard University
A. C Rovero - Universidad de Buenos Aires
M Santander - Columbia University
G. H Sembroski - Purdue University West Lafayette
K Shahinyan - University of Minnesota
A. W Smith - University of Maryland, College Park
D Staszak - McGill University
I Telezhinsky - DESY, Platanenallee 6, D-15738 Zeuthen, Germany
J. V Tucci - Purdue University West Lafayette
J Tyler - McGill University
S Vincent - DESY, Platanenallee 6, D-15738 Zeuthen, Germany
S. P Wakely - University of Chicago
O. M Weiner - Columbia University
A Weinstein - Iowa State University
D. A Williams - University of California, Santa Cruz
B Zitzer - Argonne National Laboratory
M Fumagalli - Durham University
J. X Prochaska - University of California, Berkeley
VERITAS Collaboration
Resource Type: Journal article
Publication Details: The Astronomical journal, Vol.151(6), p.142
DOI: 10.3847/0004-6256/151/6/142
ISSN: 0004-6256
eISSN: 1538-3881
Publisher: The American Astronomical Society
Number of pages: 19
Language: English
Date published: 05/18/2016
Academic Unit: Physics and Astronomy
Record Identifier: 9984199935502771

Metrics

5 Record Views

28 Times Cited - Web of Science

See more details