LUNASKA Experiment Observational Limits on UHE Neutrinos from Centaurus A and the Galactic Center

Abstract

We present the first observational limits to the ultra-high energy (UHE) neutrino flux from the Galactic Center, and from Centaurus A which is the nearest active galactic nucleus (AGN). These results are based on our "Lunar UHE Neutrino Astrophysics using the Square Kilometer Array" (LUNASKA) project experiments at the Australia Telescope Compact Array (ATCA). We also derive limits for the previous experiments and compare these limits with expectations for acceleration and super-heavy dark matter models of the origin of UHE cosmic rays.

arXiv comment5 pages, 4 figures, additional experimental details and references given, limits now calculated also for NuMoon, uncertainties in calculation of LUNASKA limits now discussed, figures updated. Accepted for publication in MNRAS on 5 August 2010

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• High-energy Particle Acceleration and Production of Ultra-high-energy Cosmic Rays in the Giant Lobes of Centaurus A
• Faraday Rotation Structure on Kiloparsec Scales in the Giant Radio Lobes of Centaurus A
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• High energy radiation from Centaurus A
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• Anisotropy studies around the galactic centre at EeV energies with the Auger Observatory
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Cited by in corpus (27)

• The Australia Telescope Compact Array Broadband Backend (CABB)
• BIGHORNS - Broadband Instrument for Global HydrOgen ReioNisation Signal
• Low-level accretion in neutron-star X-ray binaries
• Search for Point-Like Sources of Ultra-High Energy Neutrinos at the Pierre Auger Observatory and Improved Limit on the Diffuse Flux of Tau Neutrinos
• Timing and spectral studies of the transient X-ray pulsar GX 304-1 during an outburst
• The cosmic-ray air-shower signal in Askaryan radio detectors
• Accretion regimes in the X-ray pulsar 4U 1901+03
• Limits on the flux of tau neutrinos from 1 PeV to 3 EeV with the MAGIC telescopes
• On the feasibility of RADAR detection of high-energy neutrino-induced showers in ice
• RXTE-PCA observations of 1A 1118--61: timing and spectral studies during an outburst
• The sensitivity of past and near-future lunar radio experiments to ultra-high-energy cosmic rays and neutrinos
• Optimized Trigger for Ultra-High-Energy Cosmic-Ray and Neutrino Observations with the Low Frequency Radio Array
• Detection of a variable QPO at ~41 mHz in the Be/X-ray transient pulsar 4U 0115+634
• A limit on the ultra-high-energy neutrino flux from lunar observations with the Parkes radio telescope
• Overview of lunar detection of ultra-high energy particles and new plans for the SKA
• Probing superheavy dark matter through lunar radio observations of ultrahigh-energy neutrinos and the impacts of neutrino cascades
• Status and Strategies of Current LUNASKA Lunar Cherenkov Observations with the Parkes Radio Telescope
• A new method to calibrate ionospheric pulse dispersion for UHE cosmic ray and neutrino detection using the Lunar Cherenkov technique
• Search for Cosmic Particles with the Moon and LOFAR
• Timing and spectral properties of Be/Xray pulsar 4U 1901+03 during 2019 outburst
• TeV gravity searches
• Realtime processing of LOFAR data for the detection of nano-second pulses from the Moon
• Monte-Carlo simulations on possible collimation effects of outflows to fan-beamed emission of ultraluminous accreting X-ray pulsars
• Spectral evolution of X-ray pulsar 4U 1901+03 during the 2019 outburst based on Insight-HXMT and NuSTAR observations
• The Sensitivity of PUEO to Cosmogenic Neutrinos and Exotic Physics Scenarios
• Timing and Spectral Analysis of 4U 1626-67 Using AstroSat/LAXPC
• Probing accretion dynamics and spin evolution in the X-ray pulsar RX J0520.5-6932 during its 2024 Outburst