THE CONTRIBUTION of FERMI-2LAC BLAZARS to DIFFUSE TEV-PEV NEUTRINO FLUX

M. G. Aartsen, K. Abraham, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, M. Ahrens, D. Altmann, K. Andeen, Tyler Brooks Anderson, I. Ansseau, G. Anton, M. Archinger, C. Arguelles, T. C. Arlen, J. Auffenberg, S. Axani, X. Bai, S. W. Barwick, V. Baum & 300 others R. Bay, J. J. Beatty, J. Becker Tjus, K. H. Becker, S. Benzvi, P. Berghaus, D. Berley, E. Bernardini, A. Bernhard, D. Z. Besson, G. Binder, D. Bindig, M. Bissok, E. Blaufuss, S. Blot, D. J. Boersma, C. Bohm, M. Börner, F. Bos, D. Bose, S. Böser, O. Botner, J. Braun, L. Brayeur, H. P. Bretz, A. Burgman, J. Casey, M. Casier, E. Cheung, D. Chirkin, A. Christov, K. Clark, L. Classen, S. Coenders, G. H. Collin, J. M. Conrad, Douglas Cowen, A. H.Cruz Silva, J. Daughhetee, J. C. Davis, M. Day, J. P.A.M.De André, C. De Clercq, E. Del Pino Rosendo, H. Dembinski, S. De Ridder, P. Desiati, K. D.De Vries, G. De Wasseige, M. De With, T. Deyoung, J. C. Díaz-Vélez, V. Di Lorenzo, H. Dujmovic, J. P. Dumm, M. Dunkman, B. Eberhardt, T. Ehrhardt, B. Eichmann, S. Euler, P. A. Evenson, S. Fahey, A. R. Fazely, J. Feintzeig, J. Felde, K. Filimonov, C. Finley, S. Flis, C. C. Fösig, A. Franckowiak, T. Fuchs, T. K. Gaisser, R. Gaior, J. Gallagher, L. Gerhardt, K. Ghorbani, W. Giang, L. Gladstone, M. Glagla, T. Glüsenkamp, A. Goldschmidt, G. Golup, J. G. Gonzalez, D. Góra, D. Grant, Z. Griffith, C. Haack, A. Haj Ismail, A. Hallgren, F. Halzen, E. Hansen, B. Hansmann, T. Hansmann, K. Hanson, D. Hebecker, D. Heereman, K. Helbing, R. Hellauer, S. Hickford, J. Hignight, G. C. Hill, K. D. Hoffman, R. Hoffmann, K. Holzapfel, A. Homeier, K. Hoshina, F. Huang, M. Huber, W. Huelsnitz, K. Hultqvist, S. In, A. Ishihara, E. Jacobi, G. S. Japaridze, M. Jeong, K. Jero, B. J.P. Jones, M. Jurkovic, A. Kappes, T. Karg, A. Karle, U. Katz, M. Kauer, A. Keivani, J. L. Kelley, J. Kemp, A. Kheirandish, M. Kim, T. Kintscher, J. Kiryluk, T. Kittler, S. R. Klein, G. Kohnen, R. Koirala, H. Kolanoski, R. Konietz, L. Köpke, C. Kopper, S. Kopper, D. J. Koskinen, M. Kowalski, K. Krings, M. Kroll, G. Krückl, C. Krüger, J. Kunnen, S. Kunwar, N. Kurahashi, T. Kuwabara, M. Labare, J. L. Lanfranchi, M. J. Larson, D. Lennarz, M. Lesiak-Bzdak, M. Leuermann, J. Leuner, L. Lu, J. Lünemann, J. Madsen, G. Maggi, K. B.M. Mahn, S. Mancina, M. Mandelartz, R. Maruyama, K. Mase, R. Maunu, F. McNally, K. Meagher, M. Medici, M. Meier, A. Meli, T. Menne, G. Merino, T. Meures, S. Miarecki, E. Middell, L. Mohrmann, T. Montaruli, M. Moulai, R. Nahnhauer, U. Naumann, G. Neer, H. Niederhausen, S. C. Nowicki, D. R. Nygren, A. Obertacke Pollmann, A. Olivas, A. Omairat, A. O'Murchadha, T. Palczewski, H. Pandya, D. V. Pankova, Penek, J. A. Pepper, C. Pérez De Los Heros, C. Pfendner, D. Pieloth, E. Pinat, J. Posselt, P. B. Price, G. T. Przybylski, M. Quinnan, C. Raab, L. Rädel, M. Rameez, K. Rawlins, R. Reimann, M. Relich, E. Resconi, W. Rhode, M. Richman, B. Riedel, S. Robertson, M. Rongen, C. Rott, T. Ruhe, D. Ryckbosch, D. Rysewyk, L. Sabbatini, S. E.Sanchez Herrera, A. Sandrock, J. Sandroos, S. Sarkar, K. Satalecka, M. Schimp, P. Schlunder, T. Schmidt, S. Schoenen, S. Schöneberg, A. Schönwald, L. Schumacher, D. Seckel, S. Seunarine, D. Soldin, M. Song, G. M. Spiczak, C. Spiering, M. Stahlberg, M. Stamatikos, T. Stanev, A. Stasik, A. Steuer, T. Stezelberger, R. G. Stokstad, A. Stößl, R. Ström, N. L. Strotjohann, G. W. Sullivan, M. Sutherland, H. Taavola, I. Taboada, J. Tatar, S. Ter-Antonyan, A. Terliuk, G. Tešić, S. Tilav, P. A. Toale, M. N. Tobin, S. Toscano, D. Tosi, M. Tselengidou, A. Turcati, E. Unger, M. Usner, S. Vallecorsa, J. Vandenbroucke, N. Van Eijndhoven, S. Vanheule, M. Van Rossem, J. Van Santen, J. Veenkamp, M. Vehring, M. Voge, M. Vraeghe, C. Walck, A. Wallace, M. Wallraff, N. Wandkowsky, Ch Weaver, C. Wendt, S. Westerhoff, B. J. Whelan, S. Wickmann, K. Wiebe, C. H. Wiebusch, L. Wille, D. R. Williams, L. Wills, H. Wissing, M. Wolf, T. R. Wood, E. Woolsey, K. Woschnagg, D. L. Xu, X. W. Xu, Y. Xu, J. P. Yanez, G. Yodh, S. Yoshida, M. Zoll

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

The recent discovery of a diffuse cosmic neutrino flux extending up to PeV energies raises the question of which astrophysical sources generate this signal. Blazars are one class of extragalactic sources which may produce such high-energy neutrinos. We present a likelihood analysis searching for cumulative neutrino emission from blazars in the 2nd Fermi-LAT AGN catalog (2LAC) using IceCube neutrino data set 2009-12, which was optimized for the detection of individual sources. In contrast to those in previous searches with IceCube, the populations investigated contain up to hundreds of sources, the largest one being the entire blazar sample in the 2LAC catalog. No significant excess is observed, and upper limits for the cumulative flux from these populations are obtained. These constrain the maximum contribution of 2LAC blazars to the observed astrophysical neutrino flux to 27% or less between around 10 TeV and 2 PeV, assuming the equipartition of flavors on Earth and a single power-law spectrum with a spectral index of -2.5. We can still exclude the fact that 2LAC blazars (and their subpopulations) emit more than 50% of the observed neutrinos up to a spectral index as hard as -2.2 in the same energy range. Our result takes into account the fact that the neutrino source count distribution is unknown, and it does not assume strict proportionality of the neutrino flux to the measured 2LAC γ-ray signal for each source. Additionally, we constrain recent models for neutrino emission by blazars.

Original languageEnglish (US)
Article number45
JournalAstrophysical Journal
Volume835
Issue number1
DOIs
StatePublished - Jan 20 2017

Fingerprint

catalogs
neutrinos
blazars
energy
subpopulation
power law
astrophysics
index
rays
detection
distribution
analysis

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Aartsen, M. G., Abraham, K., Ackermann, M., Adams, J., Aguilar, J. A., Ahlers, M., ... Zoll, M. (2017). THE CONTRIBUTION of FERMI-2LAC BLAZARS to DIFFUSE TEV-PEV NEUTRINO FLUX. Astrophysical Journal, 835(1), [45]. https://doi.org/10.3847/1538-4357/835/1/45
Aartsen, M. G. ; Abraham, K. ; Ackermann, M. ; Adams, J. ; Aguilar, J. A. ; Ahlers, M. ; Ahrens, M. ; Altmann, D. ; Andeen, K. ; Anderson, Tyler Brooks ; Ansseau, I. ; Anton, G. ; Archinger, M. ; Arguelles, C. ; Arlen, T. C. ; Auffenberg, J. ; Axani, S. ; Bai, X. ; Barwick, S. W. ; Baum, V. ; Bay, R. ; Beatty, J. J. ; Tjus, J. Becker ; Becker, K. H. ; Benzvi, S. ; Berghaus, P. ; Berley, D. ; Bernardini, E. ; Bernhard, A. ; Besson, D. Z. ; Binder, G. ; Bindig, D. ; Bissok, M. ; Blaufuss, E. ; Blot, S. ; Boersma, D. J. ; Bohm, C. ; Börner, M. ; Bos, F. ; Bose, D. ; Böser, S. ; Botner, O. ; Braun, J. ; Brayeur, L. ; Bretz, H. P. ; Burgman, A. ; Casey, J. ; Casier, M. ; Cheung, E. ; Chirkin, D. ; Christov, A. ; Clark, K. ; Classen, L. ; Coenders, S. ; Collin, G. H. ; Conrad, J. M. ; Cowen, Douglas ; Silva, A. H.Cruz ; Daughhetee, J. ; Davis, J. C. ; Day, M. ; André, J. P.A.M.De ; Clercq, C. De ; Rosendo, E. Del Pino ; Dembinski, H. ; Ridder, S. De ; Desiati, P. ; Vries, K. D.De ; Wasseige, G. De ; With, M. De ; Deyoung, T. ; Díaz-Vélez, J. C. ; Lorenzo, V. Di ; Dujmovic, H. ; Dumm, J. P. ; Dunkman, M. ; Eberhardt, B. ; Ehrhardt, T. ; Eichmann, B. ; Euler, S. ; Evenson, P. A. ; Fahey, S. ; Fazely, A. R. ; Feintzeig, J. ; Felde, J. ; Filimonov, K. ; Finley, C. ; Flis, S. ; Fösig, C. C. ; Franckowiak, A. ; Fuchs, T. ; Gaisser, T. K. ; Gaior, R. ; Gallagher, J. ; Gerhardt, L. ; Ghorbani, K. ; Giang, W. ; Gladstone, L. ; Glagla, M. ; Glüsenkamp, T. ; Goldschmidt, A. ; Golup, G. ; Gonzalez, J. G. ; Góra, D. ; Grant, D. ; Griffith, Z. ; Haack, C. ; Ismail, A. Haj ; Hallgren, A. ; Halzen, F. ; Hansen, E. ; Hansmann, B. ; Hansmann, T. ; Hanson, K. ; Hebecker, D. ; Heereman, D. ; Helbing, K. ; Hellauer, R. ; Hickford, S. ; Hignight, J. ; Hill, G. C. ; Hoffman, K. D. ; Hoffmann, R. ; Holzapfel, K. ; Homeier, A. ; Hoshina, K. ; Huang, F. ; Huber, M. ; Huelsnitz, W. ; Hultqvist, K. ; In, S. ; Ishihara, A. ; Jacobi, E. ; Japaridze, G. S. ; Jeong, M. ; Jero, K. ; Jones, B. J.P. ; Jurkovic, M. ; Kappes, A. ; Karg, T. ; Karle, A. ; Katz, U. ; Kauer, M. ; Keivani, A. ; Kelley, J. L. ; Kemp, J. ; Kheirandish, A. ; Kim, M. ; Kintscher, T. ; Kiryluk, J. ; Kittler, T. ; Klein, S. R. ; Kohnen, G. ; Koirala, R. ; Kolanoski, H. ; Konietz, R. ; Köpke, L. ; Kopper, C. ; Kopper, S. ; Koskinen, D. J. ; Kowalski, M. ; Krings, K. ; Kroll, M. ; Krückl, G. ; Krüger, C. ; Kunnen, J. ; Kunwar, S. ; Kurahashi, N. ; Kuwabara, T. ; Labare, M. ; Lanfranchi, J. L. ; Larson, M. J. ; Lennarz, D. ; Lesiak-Bzdak, M. ; Leuermann, M. ; Leuner, J. ; Lu, L. ; Lünemann, J. ; Madsen, J. ; Maggi, G. ; Mahn, K. B.M. ; Mancina, S. ; Mandelartz, M. ; Maruyama, R. ; Mase, K. ; Maunu, R. ; McNally, F. ; Meagher, K. ; Medici, M. ; Meier, M. ; Meli, A. ; Menne, T. ; Merino, G. ; Meures, T. ; Miarecki, S. ; Middell, E. ; Mohrmann, L. ; Montaruli, T. ; Moulai, M. ; Nahnhauer, R. ; Naumann, U. ; Neer, G. ; Niederhausen, H. ; Nowicki, S. C. ; Nygren, D. R. ; Pollmann, A. Obertacke ; Olivas, A. ; Omairat, A. ; O'Murchadha, A. ; Palczewski, T. ; Pandya, H. ; Pankova, D. V. ; Penek ; Pepper, J. A. ; Heros, C. Pérez De Los ; Pfendner, C. ; Pieloth, D. ; Pinat, E. ; Posselt, J. ; Price, P. B. ; Przybylski, G. T. ; Quinnan, M. ; Raab, C. ; Rädel, L. ; Rameez, M. ; Rawlins, K. ; Reimann, R. ; Relich, M. ; Resconi, E. ; Rhode, W. ; Richman, M. ; Riedel, B. ; Robertson, S. ; Rongen, M. ; Rott, C. ; Ruhe, T. ; Ryckbosch, D. ; Rysewyk, D. ; Sabbatini, L. ; Herrera, S. E.Sanchez ; Sandrock, A. ; Sandroos, J. ; Sarkar, S. ; Satalecka, K. ; Schimp, M. ; Schlunder, P. ; Schmidt, T. ; Schoenen, S. ; Schöneberg, S. ; Schönwald, A. ; Schumacher, L. ; Seckel, D. ; Seunarine, S. ; Soldin, D. ; Song, M. ; Spiczak, G. M. ; Spiering, C. ; Stahlberg, M. ; Stamatikos, M. ; Stanev, T. ; Stasik, A. ; Steuer, A. ; Stezelberger, T. ; Stokstad, R. G. ; Stößl, A. ; Ström, R. ; Strotjohann, N. L. ; Sullivan, G. W. ; Sutherland, M. ; Taavola, H. ; Taboada, I. ; Tatar, J. ; Ter-Antonyan, S. ; Terliuk, A. ; Tešić, G. ; Tilav, S. ; Toale, P. A. ; Tobin, M. N. ; Toscano, S. ; Tosi, D. ; Tselengidou, M. ; Turcati, A. ; Unger, E. ; Usner, M. ; Vallecorsa, S. ; Vandenbroucke, J. ; Eijndhoven, N. Van ; Vanheule, S. ; Rossem, M. Van ; Santen, J. Van ; Veenkamp, J. ; Vehring, M. ; Voge, M. ; Vraeghe, M. ; Walck, C. ; Wallace, A. ; Wallraff, M. ; Wandkowsky, N. ; Weaver, Ch ; Wendt, C. ; Westerhoff, S. ; Whelan, B. J. ; Wickmann, S. ; Wiebe, K. ; Wiebusch, C. H. ; Wille, L. ; Williams, D. R. ; Wills, L. ; Wissing, H. ; Wolf, M. ; Wood, T. R. ; Woolsey, E. ; Woschnagg, K. ; Xu, D. L. ; Xu, X. W. ; Xu, Y. ; Yanez, J. P. ; Yodh, G. ; Yoshida, S. ; Zoll, M. / THE CONTRIBUTION of FERMI-2LAC BLAZARS to DIFFUSE TEV-PEV NEUTRINO FLUX. In: Astrophysical Journal. 2017 ; Vol. 835, No. 1.
@article{5a9e461f67d54884be1dd1483be5d6f2,
title = "THE CONTRIBUTION of FERMI-2LAC BLAZARS to DIFFUSE TEV-PEV NEUTRINO FLUX",
abstract = "The recent discovery of a diffuse cosmic neutrino flux extending up to PeV energies raises the question of which astrophysical sources generate this signal. Blazars are one class of extragalactic sources which may produce such high-energy neutrinos. We present a likelihood analysis searching for cumulative neutrino emission from blazars in the 2nd Fermi-LAT AGN catalog (2LAC) using IceCube neutrino data set 2009-12, which was optimized for the detection of individual sources. In contrast to those in previous searches with IceCube, the populations investigated contain up to hundreds of sources, the largest one being the entire blazar sample in the 2LAC catalog. No significant excess is observed, and upper limits for the cumulative flux from these populations are obtained. These constrain the maximum contribution of 2LAC blazars to the observed astrophysical neutrino flux to 27{\%} or less between around 10 TeV and 2 PeV, assuming the equipartition of flavors on Earth and a single power-law spectrum with a spectral index of -2.5. We can still exclude the fact that 2LAC blazars (and their subpopulations) emit more than 50{\%} of the observed neutrinos up to a spectral index as hard as -2.2 in the same energy range. Our result takes into account the fact that the neutrino source count distribution is unknown, and it does not assume strict proportionality of the neutrino flux to the measured 2LAC γ-ray signal for each source. Additionally, we constrain recent models for neutrino emission by blazars.",
author = "Aartsen, {M. G.} and K. Abraham and M. Ackermann and J. Adams and Aguilar, {J. A.} and M. Ahlers and M. Ahrens and D. Altmann and K. Andeen and Anderson, {Tyler Brooks} and I. Ansseau and G. Anton and M. Archinger and C. Arguelles and Arlen, {T. C.} and J. Auffenberg and S. Axani and X. Bai and Barwick, {S. W.} and V. Baum and R. Bay and Beatty, {J. J.} and Tjus, {J. Becker} and Becker, {K. H.} and S. Benzvi and P. Berghaus and D. Berley and E. Bernardini and A. Bernhard and Besson, {D. Z.} and G. Binder and D. Bindig and M. Bissok and E. Blaufuss and S. Blot and Boersma, {D. J.} and C. Bohm and M. B{\"o}rner and F. Bos and D. Bose and S. B{\"o}ser and O. Botner and J. Braun and L. Brayeur and Bretz, {H. P.} and A. Burgman and J. Casey and M. Casier and E. Cheung and D. Chirkin and A. Christov and K. Clark and L. Classen and S. Coenders and Collin, {G. H.} and Conrad, {J. M.} and Douglas Cowen and Silva, {A. H.Cruz} and J. Daughhetee and Davis, {J. C.} and M. Day and Andr{\'e}, {J. P.A.M.De} and Clercq, {C. De} and Rosendo, {E. Del Pino} and H. Dembinski and Ridder, {S. De} and P. Desiati and Vries, {K. D.De} and Wasseige, {G. De} and With, {M. De} and T. Deyoung and D{\'i}az-V{\'e}lez, {J. C.} and Lorenzo, {V. Di} and H. Dujmovic and Dumm, {J. P.} and M. Dunkman and B. Eberhardt and T. Ehrhardt and B. Eichmann and S. Euler and Evenson, {P. A.} and S. Fahey and Fazely, {A. R.} and J. Feintzeig and J. Felde and K. Filimonov and C. Finley and S. Flis and F{\"o}sig, {C. C.} and A. Franckowiak and T. Fuchs and Gaisser, {T. K.} and R. Gaior and J. Gallagher and L. Gerhardt and K. Ghorbani and W. Giang and L. Gladstone and M. Glagla and T. Gl{\"u}senkamp and A. Goldschmidt and G. Golup and Gonzalez, {J. G.} and D. G{\'o}ra and D. Grant and Z. Griffith and C. Haack and Ismail, {A. Haj} and A. Hallgren and F. Halzen and E. Hansen and B. Hansmann and T. Hansmann and K. Hanson and D. Hebecker and D. Heereman and K. Helbing and R. Hellauer and S. Hickford and J. Hignight and Hill, {G. C.} and Hoffman, {K. D.} and R. Hoffmann and K. Holzapfel and A. Homeier and K. Hoshina and F. Huang and M. Huber and W. Huelsnitz and K. Hultqvist and S. In and A. Ishihara and E. Jacobi and Japaridze, {G. S.} and M. Jeong and K. Jero and Jones, {B. J.P.} and M. Jurkovic and A. Kappes and T. Karg and A. Karle and U. Katz and M. Kauer and A. Keivani and Kelley, {J. L.} and J. Kemp and A. Kheirandish and M. Kim and T. Kintscher and J. Kiryluk and T. Kittler and Klein, {S. R.} and G. Kohnen and R. Koirala and H. Kolanoski and R. Konietz and L. K{\"o}pke and C. Kopper and S. Kopper and Koskinen, {D. J.} and M. Kowalski and K. Krings and M. Kroll and G. Kr{\"u}ckl and C. Kr{\"u}ger and J. Kunnen and S. Kunwar and N. Kurahashi and T. Kuwabara and M. Labare and Lanfranchi, {J. L.} and Larson, {M. J.} and D. Lennarz and M. Lesiak-Bzdak and M. Leuermann and J. Leuner and L. Lu and J. L{\"u}nemann and J. Madsen and G. Maggi and Mahn, {K. B.M.} and S. Mancina and M. Mandelartz and R. Maruyama and K. Mase and R. Maunu and F. McNally and K. Meagher and M. Medici and M. Meier and A. Meli and T. Menne and G. Merino and T. Meures and S. Miarecki and E. Middell and L. Mohrmann and T. Montaruli and M. Moulai and R. Nahnhauer and U. Naumann and G. Neer and H. Niederhausen and Nowicki, {S. C.} and Nygren, {D. R.} and Pollmann, {A. Obertacke} and A. Olivas and A. Omairat and A. O'Murchadha and T. Palczewski and H. Pandya and Pankova, {D. V.} and Penek and Pepper, {J. A.} and Heros, {C. P{\'e}rez De Los} and C. Pfendner and D. Pieloth and E. Pinat and J. Posselt and Price, {P. B.} and Przybylski, {G. T.} and M. Quinnan and C. Raab and L. R{\"a}del and M. Rameez and K. Rawlins and R. Reimann and M. Relich and E. Resconi and W. Rhode and M. Richman and B. Riedel and S. Robertson and M. Rongen and C. Rott and T. Ruhe and D. Ryckbosch and D. Rysewyk and L. Sabbatini and Herrera, {S. E.Sanchez} and A. Sandrock and J. Sandroos and S. Sarkar and K. Satalecka and M. Schimp and P. Schlunder and T. Schmidt and S. Schoenen and S. Sch{\"o}neberg and A. Sch{\"o}nwald and L. Schumacher and D. Seckel and S. Seunarine and D. Soldin and M. Song and Spiczak, {G. M.} and C. Spiering and M. Stahlberg and M. Stamatikos and T. Stanev and A. Stasik and A. Steuer and T. Stezelberger and Stokstad, {R. G.} and A. St{\"o}{\ss}l and R. Str{\"o}m and Strotjohann, {N. L.} and Sullivan, {G. W.} and M. Sutherland and H. Taavola and I. Taboada and J. Tatar and S. Ter-Antonyan and A. Terliuk and G. Tešić and S. Tilav and Toale, {P. A.} and Tobin, {M. N.} and S. Toscano and D. Tosi and M. Tselengidou and A. Turcati and E. Unger and M. Usner and S. Vallecorsa and J. Vandenbroucke and Eijndhoven, {N. Van} and S. Vanheule and Rossem, {M. Van} and Santen, {J. Van} and J. Veenkamp and M. Vehring and M. Voge and M. Vraeghe and C. Walck and A. Wallace and M. Wallraff and N. Wandkowsky and Ch Weaver and C. Wendt and S. Westerhoff and Whelan, {B. J.} and S. Wickmann and K. Wiebe and Wiebusch, {C. H.} and L. Wille and Williams, {D. R.} and L. Wills and H. Wissing and M. Wolf and Wood, {T. R.} and E. Woolsey and K. Woschnagg and Xu, {D. L.} and Xu, {X. W.} and Y. Xu and Yanez, {J. P.} and G. Yodh and S. Yoshida and M. Zoll",
year = "2017",
month = "1",
day = "20",
doi = "10.3847/1538-4357/835/1/45",
language = "English (US)",
volume = "835",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "1",

}

Aartsen, MG, Abraham, K, Ackermann, M, Adams, J, Aguilar, JA, Ahlers, M, Ahrens, M, Altmann, D, Andeen, K, Anderson, TB, Ansseau, I, Anton, G, Archinger, M, Arguelles, C, Arlen, TC, Auffenberg, J, Axani, S, Bai, X, Barwick, SW, Baum, V, Bay, R, Beatty, JJ, Tjus, JB, Becker, KH, Benzvi, S, Berghaus, P, Berley, D, Bernardini, E, Bernhard, A, Besson, DZ, Binder, G, Bindig, D, Bissok, M, Blaufuss, E, Blot, S, Boersma, DJ, Bohm, C, Börner, M, Bos, F, Bose, D, Böser, S, Botner, O, Braun, J, Brayeur, L, Bretz, HP, Burgman, A, Casey, J, Casier, M, Cheung, E, Chirkin, D, Christov, A, Clark, K, Classen, L, Coenders, S, Collin, GH, Conrad, JM, Cowen, D, Silva, AHC, Daughhetee, J, Davis, JC, Day, M, André, JPAMD, Clercq, CD, Rosendo, EDP, Dembinski, H, Ridder, SD, Desiati, P, Vries, KDD, Wasseige, GD, With, MD, Deyoung, T, Díaz-Vélez, JC, Lorenzo, VD, Dujmovic, H, Dumm, JP, Dunkman, M, Eberhardt, B, Ehrhardt, T, Eichmann, B, Euler, S, Evenson, PA, Fahey, S, Fazely, AR, Feintzeig, J, Felde, J, Filimonov, K, Finley, C, Flis, S, Fösig, CC, Franckowiak, A, Fuchs, T, Gaisser, TK, Gaior, R, Gallagher, J, Gerhardt, L, Ghorbani, K, Giang, W, Gladstone, L, Glagla, M, Glüsenkamp, T, Goldschmidt, A, Golup, G, Gonzalez, JG, Góra, D, Grant, D, Griffith, Z, Haack, C, Ismail, AH, Hallgren, A, Halzen, F, Hansen, E, Hansmann, B, Hansmann, T, Hanson, K, Hebecker, D, Heereman, D, Helbing, K, Hellauer, R, Hickford, S, Hignight, J, Hill, GC, Hoffman, KD, Hoffmann, R, Holzapfel, K, Homeier, A, Hoshina, K, Huang, F, Huber, M, Huelsnitz, W, Hultqvist, K, In, S, Ishihara, A, Jacobi, E, Japaridze, GS, Jeong, M, Jero, K, Jones, BJP, Jurkovic, M, Kappes, A, Karg, T, Karle, A, Katz, U, Kauer, M, Keivani, A, Kelley, JL, Kemp, J, Kheirandish, A, Kim, M, Kintscher, T, Kiryluk, J, Kittler, T, Klein, SR, Kohnen, G, Koirala, R, Kolanoski, H, Konietz, R, Köpke, L, Kopper, C, Kopper, S, Koskinen, DJ, Kowalski, M, Krings, K, Kroll, M, Krückl, G, Krüger, C, Kunnen, J, Kunwar, S, Kurahashi, N, Kuwabara, T, Labare, M, Lanfranchi, JL, Larson, MJ, Lennarz, D, Lesiak-Bzdak, M, Leuermann, M, Leuner, J, Lu, L, Lünemann, J, Madsen, J, Maggi, G, Mahn, KBM, Mancina, S, Mandelartz, M, Maruyama, R, Mase, K, Maunu, R, McNally, F, Meagher, K, Medici, M, Meier, M, Meli, A, Menne, T, Merino, G, Meures, T, Miarecki, S, Middell, E, Mohrmann, L, Montaruli, T, Moulai, M, Nahnhauer, R, Naumann, U, Neer, G, Niederhausen, H, Nowicki, SC, Nygren, DR, Pollmann, AO, Olivas, A, Omairat, A, O'Murchadha, A, Palczewski, T, Pandya, H, Pankova, DV, Penek, Pepper, JA, Heros, CPDL, Pfendner, C, Pieloth, D, Pinat, E, Posselt, J, Price, PB, Przybylski, GT, Quinnan, M, Raab, C, Rädel, L, Rameez, M, Rawlins, K, Reimann, R, Relich, M, Resconi, E, Rhode, W, Richman, M, Riedel, B, Robertson, S, Rongen, M, Rott, C, Ruhe, T, Ryckbosch, D, Rysewyk, D, Sabbatini, L, Herrera, SES, Sandrock, A, Sandroos, J, Sarkar, S, Satalecka, K, Schimp, M, Schlunder, P, Schmidt, T, Schoenen, S, Schöneberg, S, Schönwald, A, Schumacher, L, Seckel, D, Seunarine, S, Soldin, D, Song, M, Spiczak, GM, Spiering, C, Stahlberg, M, Stamatikos, M, Stanev, T, Stasik, A, Steuer, A, Stezelberger, T, Stokstad, RG, Stößl, A, Ström, R, Strotjohann, NL, Sullivan, GW, Sutherland, M, Taavola, H, Taboada, I, Tatar, J, Ter-Antonyan, S, Terliuk, A, Tešić, G, Tilav, S, Toale, PA, Tobin, MN, Toscano, S, Tosi, D, Tselengidou, M, Turcati, A, Unger, E, Usner, M, Vallecorsa, S, Vandenbroucke, J, Eijndhoven, NV, Vanheule, S, Rossem, MV, Santen, JV, Veenkamp, J, Vehring, M, Voge, M, Vraeghe, M, Walck, C, Wallace, A, Wallraff, M, Wandkowsky, N, Weaver, C, Wendt, C, Westerhoff, S, Whelan, BJ, Wickmann, S, Wiebe, K, Wiebusch, CH, Wille, L, Williams, DR, Wills, L, Wissing, H, Wolf, M, Wood, TR, Woolsey, E, Woschnagg, K, Xu, DL, Xu, XW, Xu, Y, Yanez, JP, Yodh, G, Yoshida, S & Zoll, M 2017, 'THE CONTRIBUTION of FERMI-2LAC BLAZARS to DIFFUSE TEV-PEV NEUTRINO FLUX', Astrophysical Journal, vol. 835, no. 1, 45. https://doi.org/10.3847/1538-4357/835/1/45

THE CONTRIBUTION of FERMI-2LAC BLAZARS to DIFFUSE TEV-PEV NEUTRINO FLUX. / Aartsen, M. G.; Abraham, K.; Ackermann, M.; Adams, J.; Aguilar, J. A.; Ahlers, M.; Ahrens, M.; Altmann, D.; Andeen, K.; Anderson, Tyler Brooks; Ansseau, I.; Anton, G.; Archinger, M.; Arguelles, C.; Arlen, T. C.; Auffenberg, J.; Axani, S.; Bai, X.; Barwick, S. W.; Baum, V.; Bay, R.; Beatty, J. J.; Tjus, J. Becker; Becker, K. H.; Benzvi, S.; Berghaus, P.; Berley, D.; Bernardini, E.; Bernhard, A.; Besson, D. Z.; Binder, G.; Bindig, D.; Bissok, M.; Blaufuss, E.; Blot, S.; Boersma, D. J.; Bohm, C.; Börner, M.; Bos, F.; Bose, D.; Böser, S.; Botner, O.; Braun, J.; Brayeur, L.; Bretz, H. P.; Burgman, A.; Casey, J.; Casier, M.; Cheung, E.; Chirkin, D.; Christov, A.; Clark, K.; Classen, L.; Coenders, S.; Collin, G. H.; Conrad, J. M.; Cowen, Douglas; Silva, A. H.Cruz; Daughhetee, J.; Davis, J. C.; Day, M.; André, J. P.A.M.De; Clercq, C. De; Rosendo, E. Del Pino; Dembinski, H.; Ridder, S. De; Desiati, P.; Vries, K. D.De; Wasseige, G. De; With, M. De; Deyoung, T.; Díaz-Vélez, J. C.; Lorenzo, V. Di; Dujmovic, H.; Dumm, J. P.; Dunkman, M.; Eberhardt, B.; Ehrhardt, T.; Eichmann, B.; Euler, S.; Evenson, P. A.; Fahey, S.; Fazely, A. R.; Feintzeig, J.; Felde, J.; Filimonov, K.; Finley, C.; Flis, S.; Fösig, C. C.; Franckowiak, A.; Fuchs, T.; Gaisser, T. K.; Gaior, R.; Gallagher, J.; Gerhardt, L.; Ghorbani, K.; Giang, W.; Gladstone, L.; Glagla, M.; Glüsenkamp, T.; Goldschmidt, A.; Golup, G.; Gonzalez, J. G.; Góra, D.; Grant, D.; Griffith, Z.; Haack, C.; Ismail, A. Haj; Hallgren, A.; Halzen, F.; Hansen, E.; Hansmann, B.; Hansmann, T.; Hanson, K.; Hebecker, D.; Heereman, D.; Helbing, K.; Hellauer, R.; Hickford, S.; Hignight, J.; Hill, G. C.; Hoffman, K. D.; Hoffmann, R.; Holzapfel, K.; Homeier, A.; Hoshina, K.; Huang, F.; Huber, M.; Huelsnitz, W.; Hultqvist, K.; In, S.; Ishihara, A.; Jacobi, E.; Japaridze, G. S.; Jeong, M.; Jero, K.; Jones, B. J.P.; Jurkovic, M.; Kappes, A.; Karg, T.; Karle, A.; Katz, U.; Kauer, M.; Keivani, A.; Kelley, J. L.; Kemp, J.; Kheirandish, A.; Kim, M.; Kintscher, T.; Kiryluk, J.; Kittler, T.; Klein, S. R.; Kohnen, G.; Koirala, R.; Kolanoski, H.; Konietz, R.; Köpke, L.; Kopper, C.; Kopper, S.; Koskinen, D. J.; Kowalski, M.; Krings, K.; Kroll, M.; Krückl, G.; Krüger, C.; Kunnen, J.; Kunwar, S.; Kurahashi, N.; Kuwabara, T.; Labare, M.; Lanfranchi, J. L.; Larson, M. J.; Lennarz, D.; Lesiak-Bzdak, M.; Leuermann, M.; Leuner, J.; Lu, L.; Lünemann, J.; Madsen, J.; Maggi, G.; Mahn, K. B.M.; Mancina, S.; Mandelartz, M.; Maruyama, R.; Mase, K.; Maunu, R.; McNally, F.; Meagher, K.; Medici, M.; Meier, M.; Meli, A.; Menne, T.; Merino, G.; Meures, T.; Miarecki, S.; Middell, E.; Mohrmann, L.; Montaruli, T.; Moulai, M.; Nahnhauer, R.; Naumann, U.; Neer, G.; Niederhausen, H.; Nowicki, S. C.; Nygren, D. R.; Pollmann, A. Obertacke; Olivas, A.; Omairat, A.; O'Murchadha, A.; Palczewski, T.; Pandya, H.; Pankova, D. V.; Penek; Pepper, J. A.; Heros, C. Pérez De Los; Pfendner, C.; Pieloth, D.; Pinat, E.; Posselt, J.; Price, P. B.; Przybylski, G. T.; Quinnan, M.; Raab, C.; Rädel, L.; Rameez, M.; Rawlins, K.; Reimann, R.; Relich, M.; Resconi, E.; Rhode, W.; Richman, M.; Riedel, B.; Robertson, S.; Rongen, M.; Rott, C.; Ruhe, T.; Ryckbosch, D.; Rysewyk, D.; Sabbatini, L.; Herrera, S. E.Sanchez; Sandrock, A.; Sandroos, J.; Sarkar, S.; Satalecka, K.; Schimp, M.; Schlunder, P.; Schmidt, T.; Schoenen, S.; Schöneberg, S.; Schönwald, A.; Schumacher, L.; Seckel, D.; Seunarine, S.; Soldin, D.; Song, M.; Spiczak, G. M.; Spiering, C.; Stahlberg, M.; Stamatikos, M.; Stanev, T.; Stasik, A.; Steuer, A.; Stezelberger, T.; Stokstad, R. G.; Stößl, A.; Ström, R.; Strotjohann, N. L.; Sullivan, G. W.; Sutherland, M.; Taavola, H.; Taboada, I.; Tatar, J.; Ter-Antonyan, S.; Terliuk, A.; Tešić, G.; Tilav, S.; Toale, P. A.; Tobin, M. N.; Toscano, S.; Tosi, D.; Tselengidou, M.; Turcati, A.; Unger, E.; Usner, M.; Vallecorsa, S.; Vandenbroucke, J.; Eijndhoven, N. Van; Vanheule, S.; Rossem, M. Van; Santen, J. Van; Veenkamp, J.; Vehring, M.; Voge, M.; Vraeghe, M.; Walck, C.; Wallace, A.; Wallraff, M.; Wandkowsky, N.; Weaver, Ch; Wendt, C.; Westerhoff, S.; Whelan, B. J.; Wickmann, S.; Wiebe, K.; Wiebusch, C. H.; Wille, L.; Williams, D. R.; Wills, L.; Wissing, H.; Wolf, M.; Wood, T. R.; Woolsey, E.; Woschnagg, K.; Xu, D. L.; Xu, X. W.; Xu, Y.; Yanez, J. P.; Yodh, G.; Yoshida, S.; Zoll, M.

In: Astrophysical Journal, Vol. 835, No. 1, 45, 20.01.2017.

Research output: Contribution to journalArticle

TY - JOUR

T1 - THE CONTRIBUTION of FERMI-2LAC BLAZARS to DIFFUSE TEV-PEV NEUTRINO FLUX

AU - Aartsen, M. G.

AU - Abraham, K.

AU - Ackermann, M.

AU - Adams, J.

AU - Aguilar, J. A.

AU - Ahlers, M.

AU - Ahrens, M.

AU - Altmann, D.

AU - Andeen, K.

AU - Anderson, Tyler Brooks

AU - Ansseau, I.

AU - Anton, G.

AU - Archinger, M.

AU - Arguelles, C.

AU - Arlen, T. C.

AU - Auffenberg, J.

AU - Axani, S.

AU - Bai, X.

AU - Barwick, S. W.

AU - Baum, V.

AU - Bay, R.

AU - Beatty, J. J.

AU - Tjus, J. Becker

AU - Becker, K. H.

AU - Benzvi, S.

AU - Berghaus, P.

AU - Berley, D.

AU - Bernardini, E.

AU - Bernhard, A.

AU - Besson, D. Z.

AU - Binder, G.

AU - Bindig, D.

AU - Bissok, M.

AU - Blaufuss, E.

AU - Blot, S.

AU - Boersma, D. J.

AU - Bohm, C.

AU - Börner, M.

AU - Bos, F.

AU - Bose, D.

AU - Böser, S.

AU - Botner, O.

AU - Braun, J.

AU - Brayeur, L.

AU - Bretz, H. P.

AU - Burgman, A.

AU - Casey, J.

AU - Casier, M.

AU - Cheung, E.

AU - Chirkin, D.

AU - Christov, A.

AU - Clark, K.

AU - Classen, L.

AU - Coenders, S.

AU - Collin, G. H.

AU - Conrad, J. M.

AU - Cowen, Douglas

AU - Silva, A. H.Cruz

AU - Daughhetee, J.

AU - Davis, J. C.

AU - Day, M.

AU - André, J. P.A.M.De

AU - Clercq, C. De

AU - Rosendo, E. Del Pino

AU - Dembinski, H.

AU - Ridder, S. De

AU - Desiati, P.

AU - Vries, K. D.De

AU - Wasseige, G. De

AU - With, M. De

AU - Deyoung, T.

AU - Díaz-Vélez, J. C.

AU - Lorenzo, V. Di

AU - Dujmovic, H.

AU - Dumm, J. P.

AU - Dunkman, M.

AU - Eberhardt, B.

AU - Ehrhardt, T.

AU - Eichmann, B.

AU - Euler, S.

AU - Evenson, P. A.

AU - Fahey, S.

AU - Fazely, A. R.

AU - Feintzeig, J.

AU - Felde, J.

AU - Filimonov, K.

AU - Finley, C.

AU - Flis, S.

AU - Fösig, C. C.

AU - Franckowiak, A.

AU - Fuchs, T.

AU - Gaisser, T. K.

AU - Gaior, R.

AU - Gallagher, J.

AU - Gerhardt, L.

AU - Ghorbani, K.

AU - Giang, W.

AU - Gladstone, L.

AU - Glagla, M.

AU - Glüsenkamp, T.

AU - Goldschmidt, A.

AU - Golup, G.

AU - Gonzalez, J. G.

AU - Góra, D.

AU - Grant, D.

AU - Griffith, Z.

AU - Haack, C.

AU - Ismail, A. Haj

AU - Hallgren, A.

AU - Halzen, F.

AU - Hansen, E.

AU - Hansmann, B.

AU - Hansmann, T.

AU - Hanson, K.

AU - Hebecker, D.

AU - Heereman, D.

AU - Helbing, K.

AU - Hellauer, R.

AU - Hickford, S.

AU - Hignight, J.

AU - Hill, G. C.

AU - Hoffman, K. D.

AU - Hoffmann, R.

AU - Holzapfel, K.

AU - Homeier, A.

AU - Hoshina, K.

AU - Huang, F.

AU - Huber, M.

AU - Huelsnitz, W.

AU - Hultqvist, K.

AU - In, S.

AU - Ishihara, A.

AU - Jacobi, E.

AU - Japaridze, G. S.

AU - Jeong, M.

AU - Jero, K.

AU - Jones, B. J.P.

AU - Jurkovic, M.

AU - Kappes, A.

AU - Karg, T.

AU - Karle, A.

AU - Katz, U.

AU - Kauer, M.

AU - Keivani, A.

AU - Kelley, J. L.

AU - Kemp, J.

AU - Kheirandish, A.

AU - Kim, M.

AU - Kintscher, T.

AU - Kiryluk, J.

AU - Kittler, T.

AU - Klein, S. R.

AU - Kohnen, G.

AU - Koirala, R.

AU - Kolanoski, H.

AU - Konietz, R.

AU - Köpke, L.

AU - Kopper, C.

AU - Kopper, S.

AU - Koskinen, D. J.

AU - Kowalski, M.

AU - Krings, K.

AU - Kroll, M.

AU - Krückl, G.

AU - Krüger, C.

AU - Kunnen, J.

AU - Kunwar, S.

AU - Kurahashi, N.

AU - Kuwabara, T.

AU - Labare, M.

AU - Lanfranchi, J. L.

AU - Larson, M. J.

AU - Lennarz, D.

AU - Lesiak-Bzdak, M.

AU - Leuermann, M.

AU - Leuner, J.

AU - Lu, L.

AU - Lünemann, J.

AU - Madsen, J.

AU - Maggi, G.

AU - Mahn, K. B.M.

AU - Mancina, S.

AU - Mandelartz, M.

AU - Maruyama, R.

AU - Mase, K.

AU - Maunu, R.

AU - McNally, F.

AU - Meagher, K.

AU - Medici, M.

AU - Meier, M.

AU - Meli, A.

AU - Menne, T.

AU - Merino, G.

AU - Meures, T.

AU - Miarecki, S.

AU - Middell, E.

AU - Mohrmann, L.

AU - Montaruli, T.

AU - Moulai, M.

AU - Nahnhauer, R.

AU - Naumann, U.

AU - Neer, G.

AU - Niederhausen, H.

AU - Nowicki, S. C.

AU - Nygren, D. R.

AU - Pollmann, A. Obertacke

AU - Olivas, A.

AU - Omairat, A.

AU - O'Murchadha, A.

AU - Palczewski, T.

AU - Pandya, H.

AU - Pankova, D. V.

AU - Penek,

AU - Pepper, J. A.

AU - Heros, C. Pérez De Los

AU - Pfendner, C.

AU - Pieloth, D.

AU - Pinat, E.

AU - Posselt, J.

AU - Price, P. B.

AU - Przybylski, G. T.

AU - Quinnan, M.

AU - Raab, C.

AU - Rädel, L.

AU - Rameez, M.

AU - Rawlins, K.

AU - Reimann, R.

AU - Relich, M.

AU - Resconi, E.

AU - Rhode, W.

AU - Richman, M.

AU - Riedel, B.

AU - Robertson, S.

AU - Rongen, M.

AU - Rott, C.

AU - Ruhe, T.

AU - Ryckbosch, D.

AU - Rysewyk, D.

AU - Sabbatini, L.

AU - Herrera, S. E.Sanchez

AU - Sandrock, A.

AU - Sandroos, J.

AU - Sarkar, S.

AU - Satalecka, K.

AU - Schimp, M.

AU - Schlunder, P.

AU - Schmidt, T.

AU - Schoenen, S.

AU - Schöneberg, S.

AU - Schönwald, A.

AU - Schumacher, L.

AU - Seckel, D.

AU - Seunarine, S.

AU - Soldin, D.

AU - Song, M.

AU - Spiczak, G. M.

AU - Spiering, C.

AU - Stahlberg, M.

AU - Stamatikos, M.

AU - Stanev, T.

AU - Stasik, A.

AU - Steuer, A.

AU - Stezelberger, T.

AU - Stokstad, R. G.

AU - Stößl, A.

AU - Ström, R.

AU - Strotjohann, N. L.

AU - Sullivan, G. W.

AU - Sutherland, M.

AU - Taavola, H.

AU - Taboada, I.

AU - Tatar, J.

AU - Ter-Antonyan, S.

AU - Terliuk, A.

AU - Tešić, G.

AU - Tilav, S.

AU - Toale, P. A.

AU - Tobin, M. N.

AU - Toscano, S.

AU - Tosi, D.

AU - Tselengidou, M.

AU - Turcati, A.

AU - Unger, E.

AU - Usner, M.

AU - Vallecorsa, S.

AU - Vandenbroucke, J.

AU - Eijndhoven, N. Van

AU - Vanheule, S.

AU - Rossem, M. Van

AU - Santen, J. Van

AU - Veenkamp, J.

AU - Vehring, M.

AU - Voge, M.

AU - Vraeghe, M.

AU - Walck, C.

AU - Wallace, A.

AU - Wallraff, M.

AU - Wandkowsky, N.

AU - Weaver, Ch

AU - Wendt, C.

AU - Westerhoff, S.

AU - Whelan, B. J.

AU - Wickmann, S.

AU - Wiebe, K.

AU - Wiebusch, C. H.

AU - Wille, L.

AU - Williams, D. R.

AU - Wills, L.

AU - Wissing, H.

AU - Wolf, M.

AU - Wood, T. R.

AU - Woolsey, E.

AU - Woschnagg, K.

AU - Xu, D. L.

AU - Xu, X. W.

AU - Xu, Y.

AU - Yanez, J. P.

AU - Yodh, G.

AU - Yoshida, S.

AU - Zoll, M.

PY - 2017/1/20

Y1 - 2017/1/20

N2 - The recent discovery of a diffuse cosmic neutrino flux extending up to PeV energies raises the question of which astrophysical sources generate this signal. Blazars are one class of extragalactic sources which may produce such high-energy neutrinos. We present a likelihood analysis searching for cumulative neutrino emission from blazars in the 2nd Fermi-LAT AGN catalog (2LAC) using IceCube neutrino data set 2009-12, which was optimized for the detection of individual sources. In contrast to those in previous searches with IceCube, the populations investigated contain up to hundreds of sources, the largest one being the entire blazar sample in the 2LAC catalog. No significant excess is observed, and upper limits for the cumulative flux from these populations are obtained. These constrain the maximum contribution of 2LAC blazars to the observed astrophysical neutrino flux to 27% or less between around 10 TeV and 2 PeV, assuming the equipartition of flavors on Earth and a single power-law spectrum with a spectral index of -2.5. We can still exclude the fact that 2LAC blazars (and their subpopulations) emit more than 50% of the observed neutrinos up to a spectral index as hard as -2.2 in the same energy range. Our result takes into account the fact that the neutrino source count distribution is unknown, and it does not assume strict proportionality of the neutrino flux to the measured 2LAC γ-ray signal for each source. Additionally, we constrain recent models for neutrino emission by blazars.

AB - The recent discovery of a diffuse cosmic neutrino flux extending up to PeV energies raises the question of which astrophysical sources generate this signal. Blazars are one class of extragalactic sources which may produce such high-energy neutrinos. We present a likelihood analysis searching for cumulative neutrino emission from blazars in the 2nd Fermi-LAT AGN catalog (2LAC) using IceCube neutrino data set 2009-12, which was optimized for the detection of individual sources. In contrast to those in previous searches with IceCube, the populations investigated contain up to hundreds of sources, the largest one being the entire blazar sample in the 2LAC catalog. No significant excess is observed, and upper limits for the cumulative flux from these populations are obtained. These constrain the maximum contribution of 2LAC blazars to the observed astrophysical neutrino flux to 27% or less between around 10 TeV and 2 PeV, assuming the equipartition of flavors on Earth and a single power-law spectrum with a spectral index of -2.5. We can still exclude the fact that 2LAC blazars (and their subpopulations) emit more than 50% of the observed neutrinos up to a spectral index as hard as -2.2 in the same energy range. Our result takes into account the fact that the neutrino source count distribution is unknown, and it does not assume strict proportionality of the neutrino flux to the measured 2LAC γ-ray signal for each source. Additionally, we constrain recent models for neutrino emission by blazars.

UR - http://www.scopus.com/inward/record.url?scp=85011283259&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85011283259&partnerID=8YFLogxK

U2 - 10.3847/1538-4357/835/1/45

DO - 10.3847/1538-4357/835/1/45

M3 - Article

VL - 835

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 45

ER -

Aartsen MG, Abraham K, Ackermann M, Adams J, Aguilar JA, Ahlers M et al. THE CONTRIBUTION of FERMI-2LAC BLAZARS to DIFFUSE TEV-PEV NEUTRINO FLUX. Astrophysical Journal. 2017 Jan 20;835(1). 45. https://doi.org/10.3847/1538-4357/835/1/45