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All-sky measurement of the anisotropy of cosmic rays at 10 TeV and mapping of the local interstellar magnetic field

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Abstract
We present the first full-sky analysis of the cosmic ray arrival direction distribution with data collected by the High-Altitude Water Cherenkov and IceCube observatories in the northern and southern hemispheres at the same median primary particle energy of 10 TeV. The combined sky map and angular power spectrum largely eliminate biases that result from partial sky coverage and present a key to probe into the propagation properties of TeV cosmic rays through our local interstellar medium and the interaction between the interstellar and heliospheric magnetic fields. From the map, we determine the horizontal dipole components of the anisotropy delta(0h) = 9.16 x 10(-4) and delta(6h) = 7.25 x 10(-4) (+/- 0.04 x 10(-4)). In addition, we infer the direction (229 degrees.2 +/- 3 degrees.5 R.A., 11 degrees.4 +/- 3 degrees.0 decl.) of the interstellar magnetic field from the boundary between large-scale excess and deficit regions from which we estimate the missing corresponding vertical dipole component of the large-scale anisotropy to be delta(N) similar to -3.97(-2.0)(+1.0) x 10(-4).
Keywords
LARGE-SCALE ANISOTROPY, 3-DIMENSIONAL FEATURES, ARRIVAL DIRECTIONS, OUTER HELIOSPHERE, ENERGY-SPECTRUM, INTENSITY, ROTATION, astroparticle physics, cosmic rays, ISM: magnetic fields

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Chicago
Abeysekara, A. U., R. Alfaro, C. Alvarez, R. Arceo, J. C. Arteaga-Velazquez, D. Avila Rojas, E. Belmont-Moreno, et al. 2019. “All-sky Measurement of the Anisotropy of Cosmic Rays at 10 TeV and Mapping of the Local Interstellar Magnetic Field.” Astrophysical Journal 871 (1).
APA
Abeysekara, A. U., Alfaro, R., Alvarez, C., Arceo, R., Arteaga-Velazquez, J. C., Avila Rojas, D., Belmont-Moreno, E., et al. (2019). All-sky measurement of the anisotropy of cosmic rays at 10 TeV and mapping of the local interstellar magnetic field. ASTROPHYSICAL JOURNAL, 871(1).
Vancouver
1.
Abeysekara AU, Alfaro R, Alvarez C, Arceo R, Arteaga-Velazquez JC, Avila Rojas D, et al. All-sky measurement of the anisotropy of cosmic rays at 10 TeV and mapping of the local interstellar magnetic field. ASTROPHYSICAL JOURNAL. 2019;871(1).
MLA
Abeysekara, A. U. et al. “All-sky Measurement of the Anisotropy of Cosmic Rays at 10 TeV and Mapping of the Local Interstellar Magnetic Field.” ASTROPHYSICAL JOURNAL 871.1 (2019): n. pag. Print.
@article{8620597,
  abstract     = {We present the first full-sky analysis of the cosmic ray arrival direction distribution with data collected by the High-Altitude Water Cherenkov and IceCube observatories in the northern and southern hemispheres at the same median primary particle energy of 10 TeV. The combined sky map and angular power spectrum largely eliminate biases that result from partial sky coverage and present a key to probe into the propagation properties of TeV cosmic rays through our local interstellar medium and the interaction between the interstellar and heliospheric magnetic fields. From the map, we determine the horizontal dipole components of the anisotropy delta(0h) = 9.16 x 10(-4) and delta(6h) = 7.25 x 10(-4) (+/- 0.04 x 10(-4)). In addition, we infer the direction (229 degrees.2 +/- 3 degrees.5 R.A., 11 degrees.4 +/- 3 degrees.0 decl.) of the interstellar magnetic field from the boundary between large-scale excess and deficit regions from which we estimate the missing corresponding vertical dipole component of the large-scale anisotropy to be delta(N) similar to -3.97(-2.0)(+1.0) x 10(-4).},
  articleno    = {96},
  author       = {Abeysekara, A. U. and Alfaro, R. and Alvarez, C. and Arceo, R. and Arteaga-Velazquez, J. C. and Avila Rojas, D. and Belmont-Moreno, E. and BenZvi, S. Y. and Brisbois, C. and Capistran, T. and Carramiana, A. and Casanova, S. and Cotti, U. and Cotzomi, J. and Diaz-Velez, J. C. and De Leon, C. and De la Fuente, E. and Dichiara, S. and DuVernois, M. A. and Espinoza, C. and Fiorino, D. W. and Fleischhack, H. and Fraija, N. and Galvan-Gamez, A. and Garcia-Gonzalez, J. A. and Gonzalez, M. M. and Goodman, J. A. and Hampel-Arias, Z. and Harding, J. P. and Hernandez, S. and Hona, B. and Hueyotl-Zahuantitla, F. and Iriarte, A. and Jardin-Blicq, A. and Joshi, V. and Lara, A. and Vargas, H. Leon and Luis-Raya, G. and Malone, K. and Marinelli, S. S. and Martinez-Castro, J. and Martinez, O. and Matthews, J. A. and Miranda-Romagnoli, P. and Moreno, E. and Mostafa, M. and Nellen, L. and Newbold, M. and Nisa, M. U. and Noriega-Papaqui, R. and Perez-Perez, E. 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K. and Gallagher, J. and Ganster, E. and Garrappa, S. and Gerhardt, L. and Ghorbani, K. and Giang, W. and Glauch, T. and Gluesenkamp, T. and Goldschmidt, A. and Gonzalez, J. G. and Grant, D. and Griffith, Z. and Haack, C. and Hallgren, A. and Halve, L. and Halzen, F. and Hanson, K. and Hebecker, D. and Heereman, D. and Helbing, K. and Hellauer, R. and Hickford, S. and Hignight, J. and Hill, G. C. and Hoffman, K. D. and Hoffmann, R. and Hoinka, T. and Hokanson-Fasig, B. and Hoshina, K. and Huang, F. and Huber, M. and Hultqvist, K. and Huennefeld, M. and Hussain, R. and In, S. and Iovine, N. and Ishihara, A. and Jacobi, E. and Japaridze, G. S. and Jeong, M. and Jero, K. and Jones, B. J. P. and Kalaczynski, P. and Kang, W. and Kappes, A. and Kappesser, D. and Karg, T. and Karle, A. and Katz, U. and Kauer, M. and Keivani, A. and Kelley, J. L. and Kheirandish, A. and Kim, J. and Kintscher, T. and Kiryluk, J. and Kittler, T. and Klein, S. R. and Koirala, R. and Kolanoski, H. and Koepke, L. and Kopper, C. and Kopper, S. and Koskinen, D. J. and Kowalski, M. and Krings, K. and Kroll, M. and Krueckl, G. and Kunwar, S. and Kurahashi, N. and Kyriacou, A. and Labare, Mathieu and Lanfranchi, J. L. and Larson, M. J. and Lauber, F. and Leonard, K. and Leuermann, M. and Liu, Q. R. and Lohfink, E. and Mariscal, C. J. Lozano and Lu, L. and Lunemann, J. and Luszczak, W. and Madsen, J. and Maggi, G. and Mahn, K. B. M. and Makino, Y. and Mancina, S. and Maris, I. C. and Maruyama, R. and Mase, K. and Maunu, R. and Meagher, K. and Medici, M. and Meier, M. and Menne, T. and Merino, G. and Meures, T. and Miarecki, S. and Micallef, J. and Momente, G. and Montaruli, T. and Moore, R. W. and Moulai, M. and Nagai, R. and Nahnhauer, R. and Nakarmi, P. and Naumann, U. and Neer, G. and Niederhausen, H. and Nowicki, S. C. and Nygren, D. R. and Pollmann, A. Obertacke and Olivas, A. and O'Murchadha, A. and O'Sullivan, E. and Palczewski, T. and Pandya, H. and Pankova, D. V. and Peiffer, P. and Pepper, J. A. and de los Heros, C. Perez and Pieloth, D. and Pinat, E. and Pizzuto, A. and Plum, M. and Price, P. B. and Przybylski, G. T. and Raab, C. and Rameez, M. and Rauch, L. and Rawlins, K. and Rea, I. C. and Reimann, R. and Relethford, B. and Renzi, G. and Resconi, E. and Rhode, W. and Richman, M. and Robertson, S. and Rongen, M. and Rott, C. and Ruhe, T. and Ryckbosch, Dirk and Rysewyk, D. and Safa, I. and Herrera, S. E. Sanchez and Sandrock, A. and Sandroos, J. and Santander, M. and Sarkar, S. and Sarkar, S. and Satalecka, K. and Schaufel, M. and Schlunder, P. and Schmidt, T. and Schneider, A. and Schneider, J. and Schoeneberg, S. and Schumacher, L. and Sclafani, S. and Seckel, D. and Seunarine, S. and Soedingrekso, J. and Soldin, D. and Song, M. and Spiczak, G. M. and Spiering, C. and Stachurska, J. and Stamatikos, M. and Stanev, T. and Stasik, A. and Stein, R. and Stettner, J. and Steuer, A. and Stezelberger, T. and Stokstad, R. G. and Stossl, A. and Strotjohann, N. L. and Stuttard, T. and Sullivan, G. W. and Sutherland, M. and Taboada, I. and Tenholt, F. and Ter-Antonyan, S. and Terliuk, A. and Tilav, S. and Toale, P. A. and Tobin, M. N. and Tonnis, C. and Toscano, S. and Tosi, D. and Tselengidou, M. and Tung, C. F. and Turcati, A. and Turcotte, R. and Turley, C. F. and Ty, B. and Unger, E. and Elorrieta, M. A. Unland and Usner, M. and Vandenbroucke, J. and Van Driessche, Ward and van Eijk, D. and van Eijndhoven, N. and Vanheule, Sander and van Santen, J. and Vraeghe, Matthias and Walck, C. and Wallace, A. and Wallraff, M. and Wandler, F. D. and Wandkowsky, N. and Watson, T. B. and Weaver, C. and Weiss, M. J. and Wendt, C. and Werthebach, J. and Westerhoff, S. and Whelan, B. J. and Whitehorn, N. and Wiebe, K. and Wiebusch, C. H. and Wille, L. and Williams, D. R. and Wills, L. and Wolf, M. and Wood, J. and Wood, T. R. and Woolsey, E. and Woschnagg, K. and Wrede, G. and Xu, D. L. and Xu, X. W. and Xu, Y. and Yanez, J. P. and Yodh, G. and Yoshida, S. and Yuan, T.},
  issn         = {0004-637X},
  journal      = {ASTROPHYSICAL JOURNAL},
  keywords     = {LARGE-SCALE ANISOTROPY,3-DIMENSIONAL FEATURES,ARRIVAL DIRECTIONS,OUTER HELIOSPHERE,ENERGY-SPECTRUM,INTENSITY,ROTATION,astroparticle physics,cosmic rays,ISM: magnetic fields},
  language     = {eng},
  number       = {1},
  pages        = {15},
  title        = {All-sky measurement of the anisotropy of cosmic rays at 10 TeV and mapping of the local interstellar magnetic field},
  url          = {http://dx.doi.org/10.3847/1538-4357/aaf5cc},
  volume       = {871},
  year         = {2019},
}

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