FORTE satellite constraints on ultra-high energy cosmic particle fluxes

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dc.creatorLehtinen, Nikolai G.
dc.creatorGorham, Peter W.
dc.creatorJacobson, Abram R.
dc.creatorRoussel-Dupre, Robert A.
dc.date2003-09-24
dc.date2003-10-04
dc.date.accessioned2026-07-07T10:27:03Z
dc.date.available2026-07-07T10:27:03Z
dc.descriptionThe FORTE (Fast On-orbit Recording of Transient Events) satellite records bursts of electromagnetic waves arising from near the Earth's surface in the radio frequency (RF) range of 30 to 300 MHz with a dual polarization antenna. We investigate the possible RF signature of ultra-high energy cosmic-ray particles in the form of coherent Cherenkov radiation from cascades in ice. We calculate the sensitivity of the FORTE satellite to ultra-high energy (UHE) neutrino fluxes at different energies beyond the Greisen-Zatsepin-Kuzmin (GZK) cutoff. Some constraints on supersymmetry model parameters are also estimated due to the limits that FORTE sets on the UHE neutralino flux. The FORTE database consists of over 4 million recorded events to date, including in principle some events associated with UHE neutrinos. We search for candidate FORTE events in the period from September 1997 to December 1999. The candidate production mechanism is via coherent VHF radiation from a UHE neutrino shower in the Greenland ice sheet. We demonstrate a high efficiency for selection against lightning and anthropogenic backgrounds. A single candidate out of several thousand raw triggers survives all cuts, and we set limits on the corresponding particle fluxes assuming this event represents our background level.
dc.descriptionadded a table, updated references and Figure 8, this version is submitted to Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/astro-ph/0309656
dc.identifierhttp://arxiv.org/abs/astro-ph/0309656
dc.identifierPhys.Rev.D69:013008,2004
dc.identifierdoi:10.1103/PhysRevD.69.013008
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177044
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Experiment
dc.titleFORTE satellite constraints on ultra-high energy cosmic particle fluxes
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