IceCube astrophysical neutrinos without a spectral cutoff and 1015–1017 eV cosmic gamma radiation
Tóm tắt
We present a range of unbroken power-law fits to the astrophysical-neutrino spectrum consistent with the most recent published IceCube data at the 68% confidence level. Assuming that the neutrinos originate in decays of π mesons, we estimate accompanying gamma-ray fluxes for various distributions of sources, taking propagation effects into account. We then briefly discuss existing experimental results constraining PeV to EeV diffuse gamma-ray flux and their systematic uncertainties. Several scenarios are marginally consistent both with the KASKADE and CASA-MIA upper limits at 10152–1016 eV and with the EAS-MSU tentative detection at ∼1017 eV, given large systematic errors of the measurements. Future searches for the diffuse gamma-ray background at sub-PeV to sub-EeV energies just below present upper limits will give a crucial diagnostic tool for distinguishing between the Galactic and extragalactic models of the origin of the IceCube events.
Tài liệu tham khảo
M. G. Aartsen et al. (IceCube Collab.), Phys. Rev. Lett. 111, 021103 (2013); arXiv:1304.5356 [astro-ph.HE].
M. G. Aartsen et al. (IceCube Collab.), Science 342(6161), 1242856 (2013); arXiv:1311.5238 [astroph.HE].
M. G. Aartsen et al. (IceCube Collab.), Phys. Rev. Lett. 113, 101101 (2014); arXiv:1405.5303 [astro-ph.HE].
L. A. Anchordoqui, V. Barger, I. Cholis, H. Goldberg, D. Hooper, A. Kusenko, J. G. Learned, and D. Marfatia, J. High Energy Astrophys., Nos. 1–2, 1 (2014) arXiv:1312.6587 [astro-ph.HE].
V. Barger, L. Fu, J. G. Learned, D. Marfatia, S. Pakvasa, and T. J. Weiler arXiv:1407.3255 [astro-ph.HE].
N. Gupta, Astropart. Phys. 48, 75 (2013); arXiv:1305.4123 [astro-ph.HE].
L. A. Anchordoqui, H. Goldberg, M. H. Lynch, A. V. Olinto, T. C. Paul, and T. J. Weiler, Phys. Rev. D 89, 083003 (2014); arXiv:1306.5021 [astro-ph.HE].
M. Ahlers and K. Murase, Phys. Rev. D 90, 023010 (2014); arXiv:1309.4077 [astro-ph.HE].
K. Murase, M. Ahlers, and B. C. Lacki, Phys. Rev. D 88, 121301 (2013); arXiv:1306.3417 [astro-ph.HE].
J. C. Joshi, W. Winter, and N. Gupta arXiv:1310.5123 [astro-ph.HE].
W. H. Press, S. A. Teukolsky, W. T. Vetterling, and B. P. Flannery, Numerical Recipes: The Art of Scientific Computing (Cambridge University Press, 2007).
M. G. Aartsen et al. (IceCube Collab.), J. Instrum. 9, P03009 (2014); arXiv:1311.4767 [physics.ins-det].
L. A. Anchordoqui, H. Goldberg, F. Halzen, and T. J. Weiler, Phys. Lett. B 600, 202 (2004); astroph/0404387.
S. Lee, Phys. Rev. D 58, 043004 (1998); astroph/9604098.
O. E. Kalashev, V. A. Kuzmin, and D. V. Semikoz, astro-ph/9911035.
O. E. Kalashev and E. Kido arXiv:1406.0735 [astroph.HE].
T. M. Kneiske, K. Mannheim, and D. H. Hartman, Astron. Astrophys. 386, 1 (2002); T. M. Kneiske, T. Bretz, K. Mannheim, and D. H. Hartman, Astron. Astrophys. 413, 807 (2004).
M. Juric et al. (SDSS Collab.), Astrophys. J. 673, 864 (2008); astro-ph/0510520.
J. F. Navarro, C. S. Frenk, and S. D. M. White, Astrophys. J. 462, 563 (1996); astro-ph/9508025.
A. Klypin, H. Zhao, and R. S. Somerville, Astrophys. J. 573, 597 (2002); astro-ph/0110390.
A. M. Taylor, S. Gabici, and F. Aharonian, Phys. Rev. D 89, 103003 (2014); arXiv:1403.3206 [astro-ph.HE].
A. Gupta, S. Mathur, Y. Krongold, F. Nicastro, and M. Galeazzi, Astrophys. J. 756, L8 (2012); arXiv:1205.5037 [astro-ph.HE].
A. H. Maller and J. S. Bullock, Mon. Not. R. Astron. Soc. 355, 694 (2004); astro-ph/0406632.
M. Aglietta et al. (EAS-TOP Collab.), Astropart. Phys. 6, 71 (1996).
M. C. Chantell et al. (CASA-MIA Collab.), Phys. Rev. Lett. 79, 1805 (1997); astro-ph/9705246.
G. Schatz et al. (KASCADE Collab.), in Proceedings of the 28th International Cosmic Ray Conference ICRC 2003, Tsukuba, Japan, July 31–August 7, 2003, Ed. by T. Kajita, Yo. Asaoka, A. Kawachi, M. Sasaki, and Y. Matsubara (Univ. Academy Press, Tokyo, Japan, 2003), Vol. 4, p. 2293.
J. Alvarez-Muniz, M. Risse, G. I. Rubtsov, B. T. Stokes (for the Pierre Auger, Telescope Array, Yakutsk Collab.), EPJ Web Conf. 53, 01009 (2013); arXiv:1306.4199 [astro-ph.HE].
Yu. A. Fomin, N. N. Kalmykov, G. V. Kulikov, V. P. Sulakov, and S. V. Troitsky, J. Exp. Theor. Phys. 117, 1011 (2013); arXiv:1307.4988 [astro-ph.HE].
Yu. A. Fomin, N. N. Kalmykov, G. V. Kulikov, V. P. Sulakov, and S. V. Troitsky, Pis’ma Zh. Eksp. Teor. Fiz. 100, 797 (2014).
W. Winter, arXiv:1407.7536 [astro-ph.HE].
S. Ogio et al. (Telescope Array Collab.), Talk at the International Symposium on Future Directions in UHECR Physics, CERN, February 13–16, 2012.
A. Etchegoyen (Pierre Auger Collab.), arXiv:0710.1646 [astro-ph].
M. Tluczykont, D. Hampf, U. Einhaus, D. Horns, M. Bruckner, N. Budnev, M. Buker, and O. Chvalaev, AIP Conf. Proc. 1505, 821 (2012).