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A search for any particular feature in any single solar neutrino dataset is unlikely to establish variability of the solar neutrino flux since the count rates are very low. It helps to combine datasets, and in this article we examine data…

High Energy Physics - Phenomenology · Physics 2009-11-13 P. A. Sturrock

Oceanic atmospheric oscillations and climate variability are tightly linked and both exhibit broad band spectral content that ranges, with roughly equal strength, from annual to centennial periodicity. The explanation for variability based…

Solar and Stellar Astrophysics · Physics 2024-04-23 Ian R. Edmonds

Previous power-spectrum analyses of the Homestake and GALLEX-GNO radiochemical solar neutrino data have shown evidence of the effects of solar rotation and also indications of oscillations with two periods that are well known in solar…

High Energy Physics - Phenomenology · Physics 2007-05-23 P. A. Sturrock

The magnetic fields of solar-type stars are observed to cycle over decadal periods -11 years in the case of the Sun. The fields originate in the turbulent convective layers of stars and have a complex dependency upon stellar rotation rate.…

Solar and Stellar Astrophysics · Physics 2017-08-02 A. Strugarek , P. Beaudoin , P. Charbonneau , A. S. Brun , J. -D. do Nascimento

Evidence for an anomalous annual periodicity in certain nuclear decay data has led to speculation concerning a possible solar influence on nuclear processes. We have recently analyzed data concerning the decay rates of Cl-36 and Si-32,…

Solar and Stellar Astrophysics · Physics 2011-02-08 P. A. Sturrock , J. B. Buncher , E. Fischbach , J. T. Gruenwald , D. Javorsek , J. H. Jenkins , R. H. Lee , J. J. Mattes , J. R. Newport

Since the 1930s, and with very few exceptions, it has been assumed that the process of radioactive decay is a random process, unaffected by the environment in which the decaying nucleus resides. There have been instances within the past few…

Nuclear Experiment · Physics 2011-06-10 Jere H. Jenkins , Ephraim Fischbach , Peter A. Sturrock , Daniel W. Mundy

Present status of the neutrino magnetic moment solutions of the solar neutrino problem is reviewed. In particular, we discuss a possibility of reconciling different degrees of suppression and time variation of the signal (or lack of such a…

High Energy Physics - Phenomenology · Physics 2012-03-24 E. Kh. Akhmedov

In a Dynamic Solar Model (DSM) the temperature dependences of the pp cycle neutrinos will be different from the ones determined by solar model calculations with the luminosity constraint. Instead of the usual neutrino fluxes pp ~ T^{-1/2},…

Astrophysics · Physics 2007-05-23 Attila Grandpierre

Althogh KamLAND apparently rules out Resonant-Spin-Flavor-Precession (RSFP) as an explanation of the solar neutrino deficit, the solar neutrino fluxes in the Cl and Ga experiments appear to vary with solar rotation. Added to this evidence,…

High Energy Physics - Phenomenology · Physics 2015-06-25 D. O. Caldwell , P. A. Sturrock

The frequencies of solar oscillations are known to change with solar activity. We use Principal Component Analysis to examine these changes with high precision. In addition to the well-documented changes in solar normal mode oscillations…

Astrophysics · Physics 2009-11-13 Charles S. Baldner , Sarbani Basu

This article presents a power-spectrum analysis of 2,350 measurements of the $^{90}$Sr/$^{90}$Y decay process acquired over the interval 4 August 2002 to 6 February 2009 at the Lomonosov Moscow State University (LMSU). As we have found for…

Solar and Stellar Astrophysics · Physics 2015-06-04 Peter A. Sturrock , Alexander G. Parkhomov , Ephraim Fischbach , Jere H. Jenkins

We investigate temporal variations of the solar neutrino flux in 1970-1997. The periods of 11, 5 and 2 years have been found in the variations of the neutrino flux. The results indicate that a periodicity close to 5 years is the most…

Astrophysics · Physics 2007-05-23 R. N. Ikhsanov , E. V. Miletsky

While KamLAND apparently rules out Resonant-Spin-Flavor-Precession (RSFP) as an explanation of the solar neutrino deficit, the solar neutrino fluxes in the Cl and Ga experiments vary with solar rotation rates. Added to this evidence,…

High Energy Physics - Phenomenology · Physics 2016-09-06 D. O. Caldwell , P. A. Sturrock

We study the impact of time-dependent solar cycles in the atmospheric neutrino rate at DUNE and Hyper-Kamiokande (HK), focusing in particular on the flux below 1 GeV. Including the effect of neutrino oscillations for the upward-going…

High Energy Physics - Phenomenology · Physics 2023-04-11 Kevin J. Kelly , Pedro A. N. Machado , Nityasa Mishra , Louis E. Strigari , Yi Zhuang

Opportunity of the solar flares (SF's) prediction observing the solar neutrino fluxes is investigated. In three neutrino generations the evolution of the neutrino flux traveling the coupled sunspots (CS's) which are the SF source is…

Solar and Stellar Astrophysics · Physics 2020-04-22 O. M. Boyarkin , I. O. Boyarkina

We investigate spatio-temporal evolution of high-degree acoustic mode frequencies of the Sun and the surface magnetic activity, over the course of multiple solar cycles, to improve our understanding of the connection between the solar…

Solar and Stellar Astrophysics · Physics 2023-12-20 Mackenzie A. Baird , Sushanta C. Tripathy , Kiran Jain

This paper examines long-term temporal and spatial fluctuations in the solar rotation (more than four solar cycles) by investigating radio emission escapes from various layers of the solar atmosphere during the years 1967-2010. The flux…

Solar and Stellar Astrophysics · Physics 2021-07-06 Vivek Kumar Singh , Satish Chandra , Sanish Thomas , Som Kumar Sharma , Hari Om Vats

Solar neutrino detection is known to be a very challenging task, due to the minuscule absorption cross-section and mass of the neutrino. One research showed that relative large solar-flares affected the decay-rates of Mn-54 in December…

Solar and Stellar Astrophysics · Physics 2022-01-11 Jonathan Walg , Anatoly Rodnianski , Itzhak Orion

This review has two parts. The first part summarizes the current observational constraints on fluctuations in the solar medium deep within the solar Radiative Zone, and shows how the KamLAND and SNO-salt data combine to make the…

High Energy Physics - Phenomenology · Physics 2007-05-23 C. P. Burgess N. S. Dzhalilov , M. Maltoni , T. I. Rashba , V. B. Semikoz , M. Tortola , J. W. F. Valle

An intriguing possibility is explored that the solar neutrino data could be used as a probe to the magnetic field structure in the sun. Various cyclic phenomena occurring on the surface of the sun have been accounted for by the so-called…

High Energy Physics - Phenomenology · Physics 2007-05-23 Takahiro Kubota , Takeshi Kurimoto , Eiichi Takasugi