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The Askaryan Radio Array: latest results and ongoing work

S. Toscano,P. Allison,S. Archambault,J. J. Beatty,D. Z. Besson,Abigail Bishop,C. Chen,P. Chen,Y. Chen,B. A. Clark,W. G. Clay,A. Connolly,L. Cremonesi,P. Dasgupta,J. Davies,Simon De Kockere,K. D. de Vries,Cosmin Deaconu,M. A. DuVernois,J. Flaherty,E. Friedman,R. Gaïor,Jordan C. Hanson,N. Harty,B. Hendricks,K. D. Hoffman,Eugene Hong,Shih‐Ying Hsu,L. Hu,J. J. Huang,M. Huang,K. Hughes,A. Ishihara,A. Karle,J. L. Kelley,K.-C. Kim,M.-C. Kim,Ilya Kravchenko,R. Krebs,Y. Ku,Chung-Yun Kuo,K. Kurusu,H. Landsman,Uzair Abdul Latif,C.-J. Li,T.-C. Liu,M.-Y. Lu,B. Madison,K. Madison,K. Mase,T. Meures,J. W. Nam,R. J. Nichol,Guy Nir,Alexander Novikov,A. Nozdrina,E. Oberla,John W. Osborn,Y. Pan,C. Pfendner,N. Punsuebsay,Jordan Daniel Roth,D. Seckel,Mohammad Ful Hossain Seikh,Y.-S. Shiao,A. Shultz,D. J.B. Smith,João Paulo N. Torres,J. Touart,N. van Eijndhoven,G. Varner,A. G. Vieregg,M.-Z. Wang,S.-H. Wang,Yi Wang,Stephanie Wissel,Chao Xie,Shigeru Yoshida,Robert H. Young

Detector

Neutrino

Phased array

2023

The Askaryan Radio Array (ARA) is searching for high-energy neutrinos (>10 PeV) from the cosmos using clusters of antennas buried under the South Pole ice sheet at a maximum depth of 200 m. ARA is looking at the radio Cherenkov emission generated when neutrinos interact with the surrounding medium. The array consists of 5 radio stations, each of them monitoring an independent portion of the ice to maximize the detector effective volume. ARA stations use a combination of vertically polarized (VPol) and horizontally polarized (HPol) antennas, as well as in-ice calibration devices (calpulser) for antenna positioning and ice properties studies. One of the newest ARA stations has been equipped with an independent phased array detector allowing to lower the trigger threshold and consequently improve the array sensitivity at low energies. ARA has been taking data since 2012 and analysis of the full data set is ongoing. In this contribution we present the latest results in the ARA search for cosmic neutrinos, which produced the best limit from an in-ice radio detector above 100 PeV. Additionally we discuss calibration efforts and ongoing work in analysis and reconstruction.

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“The Askaryan Radio Array: latest results and ongoing work” is a paper by S. Toscano P. Allison S. Archambault J. J. Beatty D. Z. Besson Abigail Bishop C. Chen P. Chen Y. Chen B. A. Clark W. G. Clay A. Connolly L. Cremonesi P. Dasgupta J. Davies Simon De Kockere K. D. de Vries Cosmin Deaconu M. A. DuVernois J. Flaherty E. Friedman R. Gaïor Jordan C. Hanson N. Harty B. Hendricks K. D. Hoffman Eugene Hong Shih‐Ying Hsu L. Hu J. J. Huang M. Huang K. Hughes A. Ishihara A. Karle J. L. Kelley K.-C. Kim M.-C. Kim Ilya Kravchenko R. Krebs Y. Ku Chung-Yun Kuo K. Kurusu H. Landsman Uzair Abdul Latif C.-J. Li T.-C. Liu M.-Y. Lu B. Madison K. Madison K. Mase T. Meures J. W. Nam R. J. Nichol Guy Nir Alexander Novikov A. Nozdrina E. Oberla John W. Osborn Y. Pan C. Pfendner N. Punsuebsay Jordan Daniel Roth D. Seckel Mohammad Ful Hossain Seikh Y.-S. Shiao A. Shultz D. J.B. Smith João Paulo N. Torres J. Touart N. van Eijndhoven G. Varner A. G. Vieregg M.-Z. Wang S.-H. Wang Yi Wang Stephanie Wissel Chao Xie Shigeru Yoshida Robert H. Young published in 2023. It has an Open Access status of “hybrid”. You can read and download a PDF Full Text of this paper here.