All-Sky Measurement of the Anisotropy of Cosmic Rays at 10 TeV and Mapping of the Local Interstellar Magnetic Field

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 p...

Full description

Saved in:
Bibliographic Details
Main Authors: Arteaga-Velázquez, J. C., BenZvi, S. Y., Brisbois, C., Casanova, S., Cotti, U., Cotzomi, J., Fiorino, D. W., Hampel-Arias, Z., Hueyotl-Zahuantitla, F., Malone, K., Miranda-Romagnoli, P., Pretz, J., Schneider, M., Surajbali, P., Tollefson, K., Wood, J., Adams, J., Aguilar, J. A., Anton, G., Argüelles, C., Auffenberg, J., Axani, S., Barron, J. P., Berley, D., Bernardini, Elisa, Binder, G., Blaufuss, E., Blot, S., Bourbeau, E., Bradascio, F., Brostean-Kaiser, J., Cheung, E., Classen, L., Coppin, P., Dave, P., Day, M., Desiati, P., DeYoung, T., Dujmovic, H., Eberhardt, B., Ehrhardt, T., Filimonov, K., Friedman, E., Ghorbani, K., Gonzalez, J. G., Heereman, D., Helbing, K., Hickford, S., Huang, F., Huber, M., Kang, W., Karg, T., Katz, U., Kelley, J. L., Kintscher, T., Kittler, T., Köpke, L., Kowalski, Marek, Kurahashi, N., Labare, M., Larson, M. J., Leuermann, M., Liu, Q. R., Maggi, G., Mariş, I. C., Maunu, R., Meagher, K., Miarecki, S., Momenté, G., Moulai, M., Nahnhauer, R., Pérez De Los Heros, C., Pinat, E., Plum, M., Rameez, M., Reimann, R., Robertson, S., Rysewyk, D., Santander, M., Schneider, A., Sclafani, S., Seckel, D., Seunarine, S., Soldin, D., Song, M., Stasik, A., Sullivan, G. W., Tenholt, F., Ter-Antonyan, S., Tilav, S., Vandenbroucke, J., Van Eijk, D., Van Eijndhoven, N., Watson, T. B., Weaver, C., Whitehorn, N., Wood, T. R., Woschnagg, K., Xu, Y., Yanez, J. P.
Format: Report
Language:English
Subjects:
cosmic radiation: anisotropy
cosmic radiation: TeV
dipole
HAWC
IceCube
magnetic field
observatory
particle: energy
power spectrum: angular dependence
propagation
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 δ 0h = 9.16 × 10−4 and δ 6h = 7.25 × 10−4 (±0.04 × 10−4). In addition, we infer the direction (2292 ± 35 R.A., 114 ± 30 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 .
ISSN:0004-637X
1538-4357
DOI:10.3204/pubdb-2020-00512