Measurement of the Extragalactic Background Light Spectral Energy Distributions with VERITAS

A. U. Abeysekara; A. Archer; A. Falcone; Q. Feng; M. Fernandez-Alonso; J. P. Finley; L. Fortson; A. Furniss; A. Gent; C. Giuri; O. Gueta; D. Hanna; W. Benbow; T. Hassan; O. Hervet; J. Holder; G. Hughes; T. B. Humensky; C. A. Johnson; P. Kaaret; M. Kertzman; D. Kieda; Maria Krause; R. Bird; F. Krennrich; S. Kumar; M. J. Lang; Gernot Maier; P. Moriarty; R. Mukherjee; M. Nievas-Rosillo; S. O Brien; R. A. Ong; K. Pfrang; A. Brill; Martin Pohl; R. R. Prado; E. Pueschel; K. Ragan; P. T. Reynolds; D. Ribeiro; G. T. Richards; E. Roache; A. C. Rovero; I. Sadeh; Robert Brose; M. Santander; G. H. Sembroski; K. Shahinyan; I. Sushch; A. Weinstein; R. M. Wells; P. Wilcox; A. Wilhelm; D. A. Williams; T. J. Williamson; M. Buchovecky; B. Zitzer; Collaboration Veritas; J. L. Christiansen; W. Cui; M. K. Daniel

doi:10.3204/PUBDB-2019-04456

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Measurement of the Extragalactic Background Light Spectral Energy Distributions with VERITAS

A. U. Abeysekara, A. Archer, A. Falcone, Q. Feng, M. Fernandez-Alonso, J. P. Finley, L. Fortson, A. Furniss, A. Gent, C. Giuri, …

01 Jan 2019

DOI: https://doi.org/10.3204/PUBDB-2019-04456

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Abstract

Astrophysics

atmosphere

background

Cherenkov Telescope Array

Computation

Computer Science

cosmic background radiation

Cosmology

energy dependence

energy spectrum

Extragalactic Astrophysics

flux

galaxy

Galaxy Astrophysics

High Energy Astrophysical Phenomena

history

infrared

Language (Computational Linguistics

Natural Language

optical

pair production

photon

pixel

redshift

sensitivity

spectral

spectrum

Speech Processing

ultraviolet

The extragalactic background light (EBL), a diffuse photon field in the optical and infrared range, is a record of radiative processes over the Universe's history. Spectral measurements of blazars at very high energies ($>$100 GeV) enable the reconstruction of the spectral energy distribution (SED) of the EBL, as the blazar spectra are modified by redshift- and energy-dependent interactions of the gamma-ray photons with the EBL. The spectra of 14 VERITAS-detected blazars are included in a new measurement of the EBL SED that is independent of EBL SED models. The resulting SED covers an EBL wavelength range of 0.56--56 $\mu$m, and is in good agreement with lower limits obtained by assuming that the EBL is entirely due to radiation from cataloged galaxies.

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Title: Measurement of the Extragalactic Background Light Spectral Energy Distributions with VERITAS
Creators: A. U. Abeysekara
A. Archer
A. Falcone
Q. Feng
M. Fernandez-Alonso
J. P. Finley
L. Fortson
A. Furniss
A. Gent
C. Giuri
O. Gueta
D. Hanna
W. Benbow
T. Hassan
O. Hervet
J. Holder
G. Hughes
T. B. Humensky
C. A. Johnson
P. Kaaret
M. Kertzman
D. Kieda
Maria Krause
R. Bird
F. Krennrich
S. Kumar
M. J. Lang
Gernot Maier
P. Moriarty
R. Mukherjee
M. Nievas-Rosillo
S. O Brien
R. A. Ong
K. Pfrang
A. Brill
Martin Pohl
R. R. Prado
E. Pueschel
K. Ragan
P. T. Reynolds
D. Ribeiro
G. T. Richards
E. Roache
A. C. Rovero
I. Sadeh
Robert Brose
M. Santander
G. H. Sembroski
K. Shahinyan
I. Sushch
A. Weinstein
R. M. Wells
P. Wilcox
A. Wilhelm
D. A. Williams
T. J. Williamson
M. Buchovecky
B. Zitzer
Collaboration Veritas
J. L. Christiansen
W. Cui
M. K. Daniel
Publisher: Institute of Physics Publ
Resource Type: Journal article
Language: English
Academic Unit: Physics
Other Identifier: 991019201503704721

Measurement of the Extragalactic Background Light Spectral Energy Distributions with VERITAS

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