Measurement of the Extragalactic Background Light Spectral Energy Distribution with VERITAS

A. U. Abeysekara; A. Archer; W. Benbow; R. Bird; A. Brill; R. Brose; M. Buchovecky; D. Calderon-Madera; J. L. Christiansen; W. Cui; M. K. Daniel; A. Falcone; Q. Feng; M. Fernandez-Alonso; J. P. Finley; L. Fortson; A. Furniss; A. Gent; C. Giuri; O. Gueta; D. Hanna; T. Hassan; O. Hervet; J. Holder; G. Hughes; T. B. Humensky; C. A. Johnson; P. Kaaret; M. Kertzman; D. Kieda; M. Krause; F. Krennrich; S. Kumar; M. J. Lang; G. Maier; P. Moriarty; R. Mukherjee; M. Nievas-Rosillo; S. O'brien; R. A. Ong; K. Pfrang; M. Pohl; R. R. Prado; E. Pueschel; J. Quinn; K. Ragan; P. T. Reynolds; D. Ribeiro; G. T. Richards; E. Roache; A. C. Rovero; I. Sadeh; M. Santander; G. H. Sembroski; K. Shahinyan; I. Sushch; T. Svraka; A. Weinstein; R. M. Wells; P. Wilcox; A. Wilhelm; D. A. Williams; T. J. Williamson; B. Zitzer

doi:10.3847/1538-4357/ab4817

Measurement of the Extragalactic Background Light Spectral Energy Distribution with VERITAS

A. U. Abeysekara, A. Archer, W. Benbow, R. Bird, A. Brill, R. Brose, M. Buchovecky, D. Calderon-Madera, J. L. Christiansen, W. Cui, M. K. Daniel, A. Falcone, Q. Feng, M. Fernandez-Alonso, J. P. Finley, L. Fortson, A. Furniss, A. Gent, C. Giuri, O. GuetaD. Hanna, T. Hassan, O. Hervet, J. Holder, G. Hughes, T. B. Humensky, C. A. Johnson, P. Kaaret, M. Kertzman, D. Kieda, M. Krause, F. Krennrich, S. Kumar, M. J. Lang, G. Maier, P. Moriarty, R. Mukherjee, M. Nievas-Rosillo, S. O'brien, R. A. Ong, K. Pfrang, M. Pohl, R. R. Prado, E. Pueschel, J. Quinn, K. Ragan, P. T. Reynolds, D. Ribeiro, G. T. Richards, E. Roache, A. C. Rovero, I. Sadeh, M. Santander, G. H. Sembroski, K. Shahinyan, I. Sushch, T. Svraka, A. Weinstein, R. M. Wells, P. Wilcox, A. Wilhelm, D. A. Williams, T. J. Williamson, B. Zitzer

Physics and Astronomy (Twin Cities)

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Abstract

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- A nd 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 μm, and is in good agreement with lower limits obtained by assuming that the EBL is entirely due to radiation from cataloged galaxies.

Original language	English (US)
Article number	150
Journal	Astrophysical Journal
Volume	885
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/ab4817
State	Published - Nov 10 2019

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© 2019 The American Astronomical Society. All rights reserved.

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Abeysekara, A. U., Archer, A., Benbow, W., Bird, R., Brill, A., Brose, R., Buchovecky, M., Calderon-Madera, D., Christiansen, J. L., Cui, W., Daniel, M. K., Falcone, A., Feng, Q., Fernandez-Alonso, M., Finley, J. P., Fortson, L., Furniss, A., Gent, A., Giuri, C., ... Zitzer, B. (2019). Measurement of the Extragalactic Background Light Spectral Energy Distribution with VERITAS. Astrophysical Journal, 885(2), Article 150. https://doi.org/10.3847/1538-4357/ab4817

Abeysekara, AU, Archer, A, Benbow, W, Bird, R, Brill, A, Brose, R, Buchovecky, M, Calderon-Madera, D, Christiansen, JL, Cui, W, Daniel, MK, Falcone, A, Feng, Q, Fernandez-Alonso, M, Finley, JP, Fortson, L, Furniss, A, Gent, A, Giuri, C, Gueta, O, Hanna, D, Hassan, T, Hervet, O, Holder, J, Hughes, G, Humensky, TB, Johnson, CA, Kaaret, P, Kertzman, M, Kieda, D, Krause, M, Krennrich, F, Kumar, S, Lang, MJ, Maier, G, Moriarty, P, Mukherjee, R, Nievas-Rosillo, M, O'brien, S, Ong, RA, Pfrang, K, Pohl, M, Prado, RR, Pueschel, E, Quinn, J, Ragan, K, Reynolds, PT, Ribeiro, D, Richards, GT, Roache, E, Rovero, AC, Sadeh, I, Santander, M, Sembroski, GH, Shahinyan, K, Sushch, I, Svraka, T, Weinstein, A, Wells, RM, Wilcox, P, Wilhelm, A, Williams, DA, Williamson, TJ & Zitzer, B 2019, 'Measurement of the Extragalactic Background Light Spectral Energy Distribution with VERITAS', Astrophysical Journal, vol. 885, no. 2, 150. https://doi.org/10.3847/1538-4357/ab4817

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title = "Measurement of the Extragalactic Background Light Spectral Energy Distribution with VERITAS",

abstract = "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- A nd 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 μm, and is in good agreement with lower limits obtained by assuming that the EBL is entirely due to radiation from cataloged galaxies.",

author = "Abeysekara, {A. U.} and A. Archer and W. Benbow and R. Bird and A. Brill and R. Brose and M. Buchovecky and D. Calderon-Madera and Christiansen, {J. L.} and W. Cui and Daniel, {M. K.} and A. Falcone and Q. Feng and M. Fernandez-Alonso and Finley, {J. P.} and L. Fortson and A. Furniss and A. Gent and C. Giuri and O. Gueta and D. Hanna and T. Hassan and O. Hervet and J. Holder and G. Hughes and Humensky, {T. B.} and Johnson, {C. A.} and P. Kaaret and M. Kertzman and D. Kieda and M. Krause and F. Krennrich and S. Kumar and Lang, {M. J.} and G. Maier and P. Moriarty and R. Mukherjee and M. Nievas-Rosillo and S. O'brien and Ong, {R. A.} and K. Pfrang and M. Pohl and Prado, {R. R.} and E. Pueschel and J. Quinn and K. Ragan and Reynolds, {P. T.} and D. Ribeiro and Richards, {G. T.} and E. Roache and Rovero, {A. C.} and I. Sadeh and M. Santander and Sembroski, {G. H.} and K. Shahinyan and I. Sushch and T. Svraka and A. Weinstein and Wells, {R. M.} and P. Wilcox and A. Wilhelm and Williams, {D. A.} and Williamson, {T. J.} and B. Zitzer",

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T1 - Measurement of the Extragalactic Background Light Spectral Energy Distribution with VERITAS

AU - Abeysekara, A. U.

AU - Archer, A.

AU - Benbow, W.

AU - Bird, R.

AU - Brill, A.

AU - Brose, R.

AU - Buchovecky, M.

AU - Calderon-Madera, D.

AU - Christiansen, J. L.

AU - Cui, W.

AU - Daniel, M. K.

AU - Falcone, A.

AU - Feng, Q.

AU - Fernandez-Alonso, M.

AU - Finley, J. P.

AU - Fortson, L.

AU - Furniss, A.

AU - Gent, A.

AU - Giuri, C.

AU - Gueta, O.

AU - Hanna, D.

AU - Hassan, T.

AU - Hervet, O.

AU - Holder, J.

AU - Hughes, G.

AU - Humensky, T. B.

AU - Johnson, C. A.

AU - Kaaret, P.

AU - Kertzman, M.

AU - Kieda, D.

AU - Krause, M.

AU - Krennrich, F.

AU - Kumar, S.

AU - Lang, M. J.

AU - Maier, G.

AU - Moriarty, P.

AU - Mukherjee, R.

AU - Nievas-Rosillo, M.

AU - O'brien, S.

AU - Ong, R. A.

AU - Pfrang, K.

AU - Pohl, M.

AU - Prado, R. R.

AU - Pueschel, E.

AU - Quinn, J.

AU - Ragan, K.

AU - Reynolds, P. T.

AU - Ribeiro, D.

AU - Richards, G. T.

AU - Roache, E.

AU - Rovero, A. C.

AU - Sadeh, I.

AU - Santander, M.

AU - Sembroski, G. H.

AU - Shahinyan, K.

AU - Sushch, I.

AU - Svraka, T.

AU - Weinstein, A.

AU - Wells, R. M.

AU - Wilcox, P.

AU - Wilhelm, A.

AU - Williams, D. A.

AU - Williamson, T. J.

AU - Zitzer, B.

PY - 2019/11/10

Y1 - 2019/11/10

N2 - 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- A nd 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 μm, and is in good agreement with lower limits obtained by assuming that the EBL is entirely due to radiation from cataloged galaxies.

AB - 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- A nd 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 μm, 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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U2 - 10.3847/1538-4357/ab4817

DO - 10.3847/1538-4357/ab4817

M3 - Article

AN - SCOPUS:85075313404

SN - 0004-637X

VL - 885

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 150

ER -

Measurement of the Extragalactic Background Light Spectral Energy Distribution with VERITAS

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