PoS - Proceedings of Science
Volume 444 - 38th International Cosmic Ray Conference (ICRC2023) - Neutrino Astronomy & Physics (NU)
Polarization Reconstruction of Askaryan Emission of Ultra-High Energy Neutrinos Using the Askaryan Radio Array
J.C. Flaherty*,  ARA Collaboration, S. Ali, P. Allison, S. Archambault, J.J. Beatty, D.Z. Besson, A. Bishop, P. Chen, Y.C. Chen, B.A. Clark, W. Clay, A. Connolly, K. Couberly, L. Cremonesi, A.C. Cummings, P. Dasgupta, R. Debolt, S. De Kockere, K.D. de Vries, C. Deaconu, M. A, J. Flaherty, E. Friedman, R. Gaior, P. Giri, J. Hanson, N. Harty, B. Hendricks, K.D. Hoffman, J.J. Huang, M.H.A. Huang, K. Hughes, A. Ishihara, A. Karle, J.L. Kelley, K.C. Kim, M.C. Kim, I. Kravchenko, R. Krebs, C.Y. Kuo, K. Kurusu, U.A. Latif, C.H. Liu, T.C. Liu, W. Luszczak, K. Mase, M.S. Muzio, J. Nam, R.J. Nichol, A. Novikov, A. Nozdrina, E. Oberla, Y. Pan, C. Pfendner, N. Punsuebsay, J. Roth, A. Salcedo-Gomez, D. Seckel, M.F.H. Seikh, Y.S. Shiao, D.J.B. Smith, S. Toscano, J. Torres, J. Touart, N. van Eijndhoven, G.S. Varner, A. Vieregg, M.Z. Wang, S.H. Wang, S.A. Wissel, C. Xie, S. Yoshida and R. Younget al. (click to show)
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Pre-published on: August 17, 2023
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Abstract
The Askaryan Radio Array (ARA) is an ultra-high energy (> 10 PeV) neutrino detector located in the Dark Sector of the South Pole. It consists of five in-ice stations of antennas that are designed to detect radiation emitted by relativistic particle showers that are byproducts of neutrino interactions in the ice, which generate a cone of Cherenkov radiation in the radio regime (known as Askaryan radiation). The neutrino direction can be reconstructed through a combination of the direction of the Askaryan radiation, its polarization, and its frequency content. Since neutrinos are unaffected by electromagnetic forces and virtually unaffected by gravity, they travel in a straight line through the universe. This allows us to point them back towards potential sources. Through the use of radio pulser measurements, which are controlled radio emissions with a known polarization signature, we can evaluate our reconstruction techniques. Here I will show our reconstruction resolution after applying our reconstruction methods to pulser measurements.
DOI: https://doi.org/10.22323/1.444.1164
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