摘要: Centaurus A, the cosmic ray accelerator a few Mpc away from us, is possibly one of nearest sources extremely high energy rays. We investigate whether gamma data currently available A in GeV–TeV band can be explained with only proton–proton interactions. show that for single power law proton spectrum, mechanisms γ-ray production other than interactions are needed inside this radio-galaxy to explain flux observed by EGRET, upper limits HESS/CANGAROO-III and correlated energetic events Pierre Auger experiment. In future, better data, simultaneous observation detectors, it will possible carry out such studies on different more detail.
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Jirong Mao, Jiancheng Wang, Knot in [OBJECTNAME STATUS="LINKS"]Centaurus A[/OBJECTNAME]: A Stochastic Magnetic Field for Diffusive Synchrotron Radiation? The Astrophysical Journal. ,vol. 669, pp. L13- L16 ,(2007) , 10.1086/523270
K. E. Turver, V. G. Mannings, K. J. Orford, N. A. Dipper, E. W. Lincoln, P. M. Chadwick, S. M. Rayner, A. Carraminana, T. J. L. McComb, An upper limit to 300 GeV gamma ray emission from Centaurus A. Astronomy and Astrophysics. ,vol. 228, pp. 327- 330 ,(1990)
Luis A. Anchordoqui, John F. Beacom, Haim Goldberg, Sergio Palomares-Ruiz, Thomas J. Weiler, TeV gamma rays from photodisintegration and daughter deexcitation of cosmic-ray nuclei. Physical Review Letters. ,vol. 98, pp. 121101- 121101 ,(2007) , 10.1103/PHYSREVLETT.98.121101
F. W. Stecker, M. A. Malkan, S. T. Scully, Corrected Table for the Parametric Coefficients for the Optical Depth of the Universe to Gamma-rays at Various Redshifts arXiv: Astrophysics. ,(2006) , 10.1086/511738
G.P. Rowell, S.A. Dazeley, P.G. Edwards, S. Gunji, T. Hara, J. Holder, A. Kawachi, T. Kifune, Y. Matsubara, Y. Mizumoto, M. Mori, H. Muraishi, Y. Muraki, T. Naito, K. Nishijima, S. Ogio, J.R. Patterson, M.D. Roberts, T. Sako, K. Sakurazawa, R. Susukita, T. Tamura, T. Tanimori, G.J. Thornton, S. Yanagita, T. Yoshida, T. Yoshikoshi, TeV observations of Centaurus A Astroparticle Physics. ,vol. 11, pp. 217- 219 ,(1999) , 10.1016/S0927-6505(99)00053-5
W. H. Allen, I. A. Bond, E. Budding, M. J. Conway, A. Daniel, K. B. Fenton, H. Fujii, Z. Fujii, N. Hayashida, K. Hibino, M. Honda, J. E. Humble, S. Kabe, K. Kasahara, T. Kifune, G. D. Lythe, A. Masaike, Y. Matsubara, K. Mitsui, Y. Miura, M. Mori, Y. Muraki, M. Nagano, T. Nakamura, M. Nishizawa, P. M. Norris, S. Ogio, To. Saito, M. Sakata, H. Sato, H. M. Shimizu, M. Spencer, J. R. Storey, T. Tanimori, M. Teshima, S. Torii, A. Wadsworth, Y. Watase, M. D. Woodhams, Y. Yamamoto, P. C. M. Yock, T. Yuda, The JANZOS Collaboration, Upper limits on TeV gamma-ray emission from Centaurus A, Vela X-1, Centaurus X-3, and Circinus X-1 The Astrophysical Journal. ,vol. 405, pp. 554- 558 ,(1993) , 10.1086/172386
MJ Hardcastle, RP Kraft, GR Sivakoff, JL Goodger, JH Croston, A Jordán, DA Evans, DM Worrall, M Birkinshaw, S. Raychaudhury, NJ Brassington, WR Forman, WE Harris, C Jones, AM Juett, SS Murray, PEJ Nulsen, CL Sarazin, KA Woodley, None, New results on particle acceleration in the Centaurus a jet and counterjet from a deep Chandra observation The Astrophysical Journal. ,vol. 670, ,(2007) , 10.1086/524197
R ALOISIO, V BEREZINSKY, P BLASI, A GAZIZOV, S GRIGORIEVA, B HNATYK, A dip in the UHECR spectrum and the transition from galactic to extragalactic cosmic rays Astroparticle Physics. ,vol. 27, pp. 76- 91 ,(2007) , 10.1016/J.ASTROPARTPHYS.2006.09.004
S. Kabuki, R. Enomoto, G. V. Bicknell, R. W. Clay, P. G. Edwards, S. Gunji, S. Hara, T. Hattori, S. Hayashi, Y. Higashi, R. Inoue, C. Itoh, F. Kajino, H. Katagiri, A. Kawachi, S. Kawasaki, T. Kifune, R. Kiuchi, K. Konno, H. Kubo, J. Kushida, Y. Matsubara, T. Mizukami, R. Mizuniwa, M. Mori, H. Muraishi, T. Naito, T. Nakamori, D. Nishida, K. Nishijima, M. Ohishi, Y. Sakamoto, V. Stamatescu, S. Suzuki, T. Suzuki, D. L. Swaby, T. Tanimori, G. Thornton, F. Tokanai, K. Tsuchiya, S. Watanabe, Y. Yamada, M. Yamazaki, S. Yanagita, T. Yoshida, T. Yoshikoshi, M. Yuasa, Y. Yukawa, CANGAROO III Search for Gamma Rays from Centaurus A and the ω Centauri Region The Astrophysical Journal. ,vol. 668, pp. 968- 973 ,(2007) , 10.1086/520767
R.W. Clay, B.R. Dawson, R. Meyhandan, Evidence for the detection of gamma-rays up to 150 TeV from the active galaxy centaurus A Astroparticle Physics. ,vol. 2, pp. 347- 352 ,(1994) , 10.1016/0927-6505(94)90025-6