Ultra-Relativistic Magnetic Monopole Search with the ANITA-II Balloon-borne Radio Interferometer

M. Detrixhe , D. Besson , P. W. Gorham , P. Allison , B. Baughmann , J. J. Beatty , K. Belov , S. Bevan

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W. R. Binns C. Chen P. Chen J. M. Clem A. Connolly D. DeMarco P. F. Dowkontt M. A. DuVernois C. Frankenfeld E. W. Grashorn D. P. Hogan N. Griffith B. Hill S. Hoover M. H. Israel A. Javaid K. M. Liewer S. Matsuno B. C. Mercurio C. Miki M. Mottram J. Nam R. J. Nichol K. Palladino A. Romero-Wolf L. Ruckman D. Saltzberg D. Seckel G. S. Varner A. G. Vieregg Y. Wang

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classification 🌌 astro-ph.HE

keywords anita-iienergylimitmagneticmonopolessearchultra-relativisticaccumulated

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We have conducted a search for extended energy deposition trails left by ultra-relativistic magnetic monopoles interacting in Antarctic ice. The non-observation of any satisfactory candidates in the 31 days of accumulated ANITA-II flight data results in an upper limit on the diffuse flux of relativistic monopoles. We obtain a 90% C.L. limit of order 10^{-19}/(cm^2-s-sr) for values of Lorentz boost factor 10^{10}<gamma at the anticipated energy E=10^{16} GeV. This bound is stronger than all previously published experimental limits for this kinematic range.

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Ultra-Relativistic Magnetic Monopole Search with the ANITA-II Balloon-borne Radio Interferometer

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