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Journal articles on the topic 'Solar axion'

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Author: Grafiati

Published: 11 March 2023

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1

Vergados, John D., Paraskevi C. Divari, and Hiroyasu Ejiri. "Calculated Event Rates for Axion Detection via Atomic and Nuclear Processes." Advances in High Energy Physics 2022 (February 22, 2022): 1–24. http://dx.doi.org/10.1155/2022/7373365.

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The possibility of detection of 5.5 MeV and 14.4 keV solar axions by observing axion-induced nuclear and atomic transitions is investigated. The presence of nuclear transitions between spin orbit partners can be manifested by the subsequent deexcitation via gamma ray emissions. The transition rates can also be studied in the context of radiative axion absorption by a nucleus. The elementary interaction is obtained in the context of the axion-quark couplings predicted by existing axion models. Then, these couplings will be transformed to the nucleon level utilizing reasonable existing models, which lead to effective transition operators. Using these operators, we calculate the needed nuclear matrix elements employing wave functions obtained in the context of the nuclear shell model. With these ingredients, we discuss possibilities of experimental observation of the axion-induced nuclear gamma rays. In the second part, we will examine the axion-induced production of X-rays (axion-photon conversion) or ionization from deeply bound electron orbits. In this case, the axion electron coupling is predicted by existing axion models; no renormalization is needed. The experimental signal is the observation of directly produced electrons and/or the emission of hard X-rays and Auger electrons, following the deexcitation of the final atom. Critical discussion is made on the experimental feasibility of detecting the solar axions by using multiton scale NaI detectors.

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2

Galan, Javier. "Exploring the Sun’s core with BabylAXO." Journal of Physics: Conference Series 2156, no. 1 (December 1, 2021): 012014. http://dx.doi.org/10.1088/1742-6596/2156/1/012014.

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Abstract Axions are a natural consequence of the Peccei-Quinn mechanism, the most compelling solution to the strong-CP problem. Similar axion-like particles (ALPs) also appear in a number of possible extensions of the Standard Model, notably in string theories. Both, axions and ALPs, are very well motivated candidates for Dark Matter (DM), and they would be copiously produced at the sun’s core. A relevant effort during the last two decades has been the CAST experiment at CERN, the most sensitive axion helioscope to date. The International Axion Observatory (IAXO) is a large-scale 4th generation helioscope, and its primary physics goal is to extend further the search for solar axions or ALPs with a final signal to background ratio of about 5 orders of magnitude higher. We briefly review here the astrophysical hints and models that will be at reach while searching for solar axions within the context of the IAXO helioscope search program, and in particular the physics under reach for BabyIAXO, an intermediate helioscope stage towards the full IAXO.

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3

GNEDIN, YU N. "CURRENT STATUS OF MODERN DARK MATTER PROBLEM." International Journal of Modern Physics A 17, no. 29 (November 20, 2002): 4251–60. http://dx.doi.org/10.1142/s0217751x02013290.

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The basic methods of searching for dark matter candidates are discussed. The main topics of this talk are: (a) ground - based cavity experiments with searching for galactic axions; (b) searching for hadronic axion decay line into galactic and extragalactic light; (c) experimental search for solar and stellar axions; (d) basic methods of searching for WIMPs as candidates into dark matter; (e) limits on axion and WIMP masses and their coupling constants to photons and ordinary matter; (f) novels of searching for nonbaryonic dark matter.

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4

Redondo, Javier. "Solar axion flux from the axion-electron coupling." Journal of Cosmology and Astroparticle Physics 2013, no. 12 (December 5, 2013): 008. http://dx.doi.org/10.1088/1475-7516/2013/12/008.

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Xu, Wenqin. "Beyond the Standard Model Searches with the Majorana Demonstrator Experiment." Journal of Physics: Conference Series 2156, no. 1 (December 1, 2021): 012021. http://dx.doi.org/10.1088/1742-6596/2156/1/012021.

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Abstract The Majorana Demonstrator experiment operated two modular arrays of p-type point contact high purity germanium (HPGe) detectors, of which 30 kg is enriched to 88% in Ge-76, to search for neutrinoless double beta decay. The data-taking campaign for double beta decay with enriched detectors was successfully concluded in March 2021, and data-taking with natural detectors is still ongoing. The Demonstrator has achieved excellent energy performance in a wide dynamic range covering 1 keV to 10 MeV. The extra-low background level and excellent energy performance achieved by the Demonstrator makes it competitive in various searches of physics beyond the Standard Model. If there is an axion-photon coupling, axions can be produced by the Primakoff conversion of photons in the Sun. Solar axions can inversely generate photon signals in germanium crystals, which can be coherently enhanced when the Bragg condition is satisfied. The Demonstrator is searching for solar axions with a novel method to correlate and leverage its high number of HPGe detectors. We will discuss the status and results of recent searches for new physics with the Demonstrator, including the first reporting of a solar axion search.

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6

Qu, Mingrui. "The Principle and Detection Progress of Axion Dark Matter." Highlights in Science, Engineering and Technology 17 (November 10, 2022): 308–12. http://dx.doi.org/10.54097/hset.v17i.2620.

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Detection of the axion is a significant yet challenging discovery for particle physics and astrophysics. Based on information retrieval and interpretation of results, a summary of state-of-art detection methods could be achieved, and future progress and be predicted. Although the axion suffices for its properties of hidden nature and impact on gravity, which leads to the difficulty of detection. There are currently several candidates for the detection of axions: cavity microwave experiments, solar axion searches, and radio telescope searches. With progress on all of these detection methods, analysis can be performed to establish a foundation for further development in these detection methods. If current methods continue to become more efficient and new methods are continuously proposed, the axion’s detection can be hastened and proof or counter-proof would be established quicker. Overall, these results offer a guideline for further axion search and newer questions based on the axion in the near future.

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7

Ruz, J. "CAST—CERN Axion Solar Telescope." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 572, no. 1 (March 2007): 498–99. http://dx.doi.org/10.1016/j.nima.2006.10.235.

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8

Abdelhameed, A. H., S. V. Bakhlanov, P. Bauer, A. Bento, E. Bertoldo, L. Canonica, A. V. Derbin, et al. "A new limit on the resonant absorption of solar axions obtained via ¹⁶⁹Tm-containing bolometer." Journal of Physics: Conference Series 2103, no. 1 (November 1, 2021): 012142. http://dx.doi.org/10.1088/1742-6596/2103/1/012142.

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Abstract A newly developed experimental technique based on 169Tm-containing cryogenic bolometer detector was employed in order to perform the search for solar axions. The inclusion of target material into the active detector volume allowed for significant increase in sensitivity to axion parameters. A short 6.6 days measurement campaign with 8.18 g detector crystal yielded the following limits on axion couplings: | g A γ ( g A N 0 + g A N 3 ) ≤ 1.44 × 10 − 14 GeV − 1 and | g A e ( g A N 0 + g A N 3 ) ≤ 2.81 × 10 − 16 . The achieved results demonstrate high scalability potential of presented experimental approach.

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9

Gavrilyuk, Yu M., A. N. Gangapshev, A. V. Derbin, I. S. Drachnev, V. V. Kazalov, V. V. Kuzminov, M. S. Mikulich, et al. "New Constraints on the Axion–Electron Coupling Constant for Solar Axions." JETP Letters 116, no. 1 (July 2022): 11–17. http://dx.doi.org/10.1134/s0021364022601075.

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10

Jakovčić, K., S. Andriamonje, S. Aune, F. Avignone, K. Barth, A. Belov, B. Beltrán, et al. "Prospects for the CERN Axion Solar Telescope sensitivity to 14.4keV axions." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 580, no. 1 (September 2007): 37–39. http://dx.doi.org/10.1016/j.nima.2007.05.035.

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11

Gavrilyuk, Yu M., A. N. Gangapshev, A. V. Derbin, I. S. Drachnev, V. V. Kazalov, V. V. Kobychev, V. V. Kuzminov, et al. "New Constraints on the Axion–Photon Coupling Constant for Solar Axions." JETP Letters 107, no. 10 (May 2018): 589–94. http://dx.doi.org/10.1134/s0021364018100090.

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12

Burgess, C. P., and F. Quevedo. "Axion homeopathy: screening dilaton interactions." Journal of Cosmology and Astroparticle Physics 2022, no. 04 (April 1, 2022): 007. http://dx.doi.org/10.1088/1475-7516/2022/04/007.

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Abstract Cosmologically active Brans-Dicke (or dilaton) scalar fields are generically ruled out by solar system tests of gravity unless their couplings to ordinary matter are much suppressed relative to gravitational strength, and this is a major hindrance when building realistic models of light dilatons coupled to matter. We propose a new mechanism for evading such bounds if matter also couples to a light axion, that exploits nonlinear target-space curvature interactions to qualitatively change how the fields respond to a gravitating source. We find that dilaton-matter couplings that would be excluded in the absence of an axion can become acceptable given an additional small axion-matter coupling, and this is possible because the axion-dilaton interactions end up converting the would-be dilaton profile into an axion profile. The trajectories of matter test bodies are then controlled by the much weaker axion-matter couplings and can easily be small enough to escape detection. We call this mechanism Axion Homeopathy because the evasion of the dilaton-coupling bounds persists for extremely small axion couplings provided only that they are nonzero. We explore the mechanism using axio-dilaton equations that are SL(2,ℝ) invariant (as often appear in string compactifications), since for these the general solutions exterior to a spherically symmetric source can be found analytically. We use this solution to compute the relevant PPN parameters, γ PPN and β PPN, and verify that their deviation from unity can be much smaller than it would have been in the absence of axion-matter couplings and can therefore evade the experimental bounds.

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13

Schlattl, H. "Helioseismological constraint on solar axion emission." Astroparticle Physics 10, no. 4 (May 1999): 353–59. http://dx.doi.org/10.1016/s0927-6505(98)00063-2.

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14

Aalseth, C. E., E. Arik, D. Autiero, F. T. Avignone, K. Barth, S. M. Bowyer, H. Brauninger, et al. "The cern axion solar telescope (CAST)." Nuclear Physics B - Proceedings Supplements 110 (July 2002): 85–87. http://dx.doi.org/10.1016/s0920-5632(02)01459-7.

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15

Aalseth, C. "The cern axion solar telescope (CAST)." Nuclear Physics B - Proceedings Supplements 110, no. 2 (July 2002): 85–87. http://dx.doi.org/10.1016/s0920-5632(02)80102-5.

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16

Garza, J. G., S. Aune, F. Aznar, J. F. Castel, S. Cebrián, T. Dafni, E. Ferrer-Ribas, et al. "Micromegas for dark matter searches: CAST/IAXO & TREX-DM experiments." EPJ Web of Conferences 174 (2018): 01008. http://dx.doi.org/10.1051/epjconf/201817401008.

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The most compelling candidates for Dark Matter to day are WIMPs and axions. The applicability of gasesous Time Projection Chambers (TPCs) with Micromesh Gas Structures (Micromegas) to the search of these particles is explored within this work. Both particles would produce an extremely low rate at very low energies in particle detectors. Micromegas detectors can provide both low background rates and low energy threshold, due to the high granularity, radiopurity and uniformity of the readout. Small (few cm wide) Micromegas detectors are used to image the axion-induced x-ray signal expected in the CERN Axion Solar Telescope (CAST) experiment. We show the background levels obtained in CAST and the prospects to further reduce them to the values required by the Internation Axion Observatory (IAXO). We also present TREX-DM, a scaled-up version of the Micromegas used in axion research, but this time dedicated to the low-mass WIMP detection. TREX-DM is a high-pressure Micromegas-based TPC designed to host a few hundreds of grams of light nuclei (argon or neon) with energy thresholds potentially at the level of 100 eV. The detector is described in detail, as well as the results of the commissioning and characterization phase on surface. Besides, the background model of TREX-DM is presented, along with the anticipated sensitivity of this search, which could go beyond current experimental limits.

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17

Straniero, O., C. Pallanca, E. Dalessandro, I. Domínguez, F. R. Ferraro, M. Giannotti, A. Mirizzi, and L. Piersanti. "The RGB tip of galactic globular clusters and the revision of the axion-electron coupling bound." Astronomy & Astrophysics 644 (December 2020): A166. http://dx.doi.org/10.1051/0004-6361/202038775.

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Context. The production of neutrinos by plasma oscillations is the most important energy sink process operating in the degenerate core of low-mass red giant stars. This process counterbalances the release of energy induced by nuclear reactions and gravitational contraction, and determines the luminosity attained by a star at the moment of the He ignition. This occurrence coincides with the tip of the red giant branch (RGB), whose luminosity is extensively used as a calibrated standard candle in several cosmological studies. Aims. We aim to investigate the possible activation of additional energy sink mechanisms, as predicted by many extensions of the so-called Standard Model. In particular, our objective is to test the possible production of axions or axion-like particles, mainly through their coupling with electrons. Methods. By combining Hubble Space Telescope and ground-based optical and near-infrared photometric samples, we derived the RGB tip absolute magnitude of 22 galactic globular clusters (GGCs). The effects of varying the distance and the metallicity scales were also investigated. Then we compared the observed tip luminosities with those predicted by state-of-the-art stellar models that include the energy loss due to the axion production in the degenerate core of red giant stars. Results. We find that theoretical predictions including only the energy loss by plasma neutrinos are, in general, in good agreement with the observed tip bolometric magnitudes, even though the latter are ∼0.04 mag brighter on average. This small shift may be the result of systematic errors affecting the evaluation of the RGB tip bolometric magnitudes, or, alternatively, it could be ascribed to an axion-electron coupling causing a non-negligible thermal production of axions. In order to estimate the strength of this possible axion sink, we performed a cumulative likelihood analysis using the RGB tips of the whole set of 22 GGCs. All the possible sources of uncertainties affecting both the measured bolometric magnitudes and the corresponding theoretical predictions were carefully considered. As a result, we find that the value of the axion-electron coupling parameter that maximizes the likelihood probability is gae/10−13 ∼ 0.60−0.58+0.32. This hint is valid, however, if the dominant energy sinks operating in the core of red giant stars are standard neutrinos and axions coupled with electrons. Any additional energy-loss process, not included in the stellar models, would reduce such a hint. Nevertheless, we find that values gae/10−13 > 1.48 can be excluded with 95% confidence. Conclusions. The new bound we find represents the most stringent constraint for the axion-electron coupling available so far. The new scenario that emerges after this work represents a greater challenge for future experimental axion searches. In particular, we can exclude that the recent signal seen by the XENON1T experiment was due to solar axions.

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18

Chadha-Day, Francesca. "Axion-like particle oscillations." Journal of Cosmology and Astroparticle Physics 2022, no. 01 (January 1, 2022): 013. http://dx.doi.org/10.1088/1475-7516/2022/01/013.

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Abstract String theory compactifications may generate many light axion-like particles (ALPs) with weak couplings to electromagnetism. In general, a large number of ALPs may exist, with a linear combination having a potentially observable coupling to electromagnetism. The basis in which only one ALP couples to electromagnetism is in general misaligned with the mass basis. This leads to mixing between the `electromagnetic' ALP and a number of `hidden' ALPs that do not interact directly with the photon. The process is analagous to neutrino oscillations. I will discuss the phenomenological consequences of this mixing for astrophysical ALP signals, in particular showing that it may significantly reduce the predicted signal in experiments such as the CERN Axion Solar Telescope.

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19

Aoki, Arata, and Jiro Soda. "Detecting ultralight axion dark matter wind with laser interferometers." International Journal of Modern Physics D 26, no. 07 (December 13, 2016): 1750063. http://dx.doi.org/10.1142/s0218271817500638.

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The ultralight axion with mass around [Formula: see text][Formula: see text]eV is known as a candidate of dark matter. A peculiar feature of the ultralight axion is oscillating pressure in time, which produces oscillation of gravitational potentials. Since the solar system moves through the dark matter halo at the velocity of about [Formula: see text], there exists axion wind, which looks like scalar gravitational waves for us. Hence, there is a chance to detect ultralight axion dark matter with a wide mass range by using laser interferometer detectors. We calculate the detector signal induced by the oscillating pressure of the ultralight axion field, which would be detected by future laser interferometer experiments. We also argue that the detector signal can be enhanced due to the resonance in modified gravity theory explaining the dark energy.

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20

Zioutas, K., and the Cast Collaboration). "Results of the CERN Axion Solar Telescope (CAST)." Journal of Physics: Conference Series 65 (April 1, 2007): 012009. http://dx.doi.org/10.1088/1742-6596/65/1/012009.

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21

CEBRIAN, S. "Prospects of solar axion searches with crystal detectors." Astroparticle Physics 10, no. 4 (May 1999): 397–404. http://dx.doi.org/10.1016/s0927-6505(98)00069-3.

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22

Andriamonje, S., V. Arsov, S. Aune, T. Aune, F. T. Avignone, K. Barth, A. Belov, et al. "The cern axion solar telescope (CAST): an update." Nuclear Physics B - Proceedings Supplements 138 (January 2005): 41–44. http://dx.doi.org/10.1016/j.nuclphysbps.2004.11.008.

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23

Konno, R., K. Maehisa, K. Mitsuda, N. Y. Yamasaki, R. Yamamoto, T. Hayashi, H. Muramatsu, et al. "Development of TES Microcalorimeters with Solar-Axion Converter." Journal of Low Temperature Physics 199, no. 3-4 (December 23, 2019): 654–62. http://dx.doi.org/10.1007/s10909-019-02257-9.

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24

Irastorza, Igor G. "Latest results from the CERN Axion Solar Telescope." Journal of Physics: Conference Series 203 (January 1, 2010): 012036. http://dx.doi.org/10.1088/1742-6596/203/1/012036.

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25

Hoof, Sebastian, Joerg Jaeckel, and Lennert J. Thormaehlen. "Quantifying uncertainties in the solar axion flux and their impact on determining axion model parameters." Journal of Cosmology and Astroparticle Physics 2021, no. 09 (September 1, 2021): 006. http://dx.doi.org/10.1088/1475-7516/2021/09/006.

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26

Ali, Amna, Sabiruddin Molla, Farook Rahaman, Ruhul Amin, Gurudas Mandal, and Saibal Ray. "Dilaton-Axion Black Hole under the Solar System Tests." New Astronomy 83 (February 2021): 101494. http://dx.doi.org/10.1016/j.newast.2020.101494.

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27

Irastorza, Igor G. "First Results of the CERN Axion Solar Telescope (CAST)." Nuclear Physics B - Proceedings Supplements 143 (June 2005): 548. http://dx.doi.org/10.1016/j.nuclphysbps.2005.01.213.

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28

Irastorza, I. G., S. Andriamonje, E. Arik, D. Autiero, F. Avignone, K. Barth, H. Brauninger, et al. "The CERN axion solar telescope (CAST): status and prospects." Nuclear Physics B - Proceedings Supplements 114 (February 2003): 75–80. http://dx.doi.org/10.1016/s0920-5632(02)01894-7.

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29

Paschos, E. A., and K. Zioutas. "A proposal for solar axion detection via Bragg scattering." Physics Letters B 323, no. 3-4 (March 1994): 367–72. http://dx.doi.org/10.1016/0370-2693(94)91233-5.

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30

Ye, Ziping, Feiyang Zhang, Donglian Xu, and Jianglai Liu. "Unambiguously Resolving the Potential Neutrino Magnetic Moment Signal at Large Liquid Scintillator Detectors." Chinese Physics Letters 38, no. 11 (December 1, 2021): 111401. http://dx.doi.org/10.1088/0256-307x/38/11/111401.

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Non-vanishing electromagnetic properties of neutrinos have been predicted by many theories beyond the Standard Model, and an enhanced neutrino magnetic moment can have profound implications for fundamental physics. The XENON1T experiment recently detected an excess of electron recoil events in the 1–7 keV energy range, which can be compatible with solar neutrino magnetic moment interaction at a most probable value of μν = 2.1 × 10−11 μ B. However, tritium backgrounds or solar axion interaction in this energy window are equally plausible causes. Upcoming multi-tonne noble liquid detectors will test these scenarios more in depth, but will continue to face similar ambiguity. We report a unique capability of future large liquid scintillator detectors to help resolve the potential neutrino magnetic moment scenario. With O(100) kton⋅year exposure of liquid scintillator to solar neutrinos, a sensitivity of μν < 10−11 μ B can be reached at an energy threshold greater than 40 keV, where no tritium or solar axion events but only neutrino magnetic moment signal is still present.

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31

Zhitnitsky, Ariel. "Axion quark nuggets. Dark matter and matter–antimatter asymmetry: Theory, observations and future experiments." Modern Physics Letters A 36, no. 18 (May 31, 2021): 2130017. http://dx.doi.org/10.1142/s0217732321300172.

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We review a testable, the axion quark nugget (AQN) model outside of the standard WIMP paradigm. The model was originally invented to explain the observed similarity between the dark and the visible components, [Formula: see text], in a natural way as both types of matter are formed during the same QCD transition and proportional to the same dimensional fundamental parameter of the system, [Formula: see text]. In this framework, the baryogenesis is actually a charge segregation (rather than charge generation) process which is operational due to the [Formula: see text]-odd axion field, while the global baryon number of the Universe remains zero. The nuggets and anti-nuggets are strongly interacting but macroscopically large objects with approximately nuclear density. We overview several specific recent applications of this framework. First, we discuss the “solar corona mystery” when the so-called nanoflares are identified with the AQN annihilation events in corona. Secondly, we review a proposal that the recently observed by the Telescope Array puzzling events is a result of the annihilation events of the AQNs under thunderstorm. Finally, we overview a broadband strategy which could lead to the discovery the AQN-induced axions representing the heart of the construction.

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32

Avignone, F. T., R. J. Creswick, and S. Nussinov. "Can large scintillators be used for solar-axion searches to test the cosmological axion–photon oscillation proposal?" Physics Letters B 681, no. 2 (October 2009): 122–24. http://dx.doi.org/10.1016/j.physletb.2009.09.011.

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33

Lu, Zhenhan. "Comparison of the Detection Paradigms of Axion and WIMPs." Journal of Physics: Conference Series 2386, no. 1 (December 1, 2022): 012078. http://dx.doi.org/10.1088/1742-6596/2386/1/012078.

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Abstract Contemporarily, as a popular topic for a long time, dark matter has been widely discussed. There are different dark matters candidates proposed by scholars which are likely to exist in the universe. This paper discussed about the detection schemes of two different types of dark matters, i.e., axion and WIMPs. The different detection methods are based on different properties of the dark matters. Their differences in mass, electricity, interaction between other particles or other various natures contribute to different detection methods. For WIMPs, direct detection, indirect detection, accelerator searches, bark stars and high energy solar neutrinos are proper methods. Regarding to axion, all different experiments held to detect axion almost based on the same idea, which is axion can transform into photons and vice versa in strong electromagnetic field. Testing the dark matters through various ways can have a more credible result. Moreover, this study summarizes the detection methods for each dark matter, and try to figure out the inherit reasons behind it. Overall, these results shed light on guiding further exploration of the detection of dark matters.

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34

Irastorza, I. G., S. Aune, K. Barth, A. Belov, S. Borghi, H. Bräuninger, G. Cantatore, et al. "Latest results and prospects of the CERN Axion Solar Telescope." Journal of Physics: Conference Series 309 (August 10, 2011): 012001. http://dx.doi.org/10.1088/1742-6596/309/1/012001.

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35

Ichimura, Koichi. "Solar axion search by annual modulation with XMASS-I detector." Journal of Physics: Conference Series 1342 (January 2020): 012068. http://dx.doi.org/10.1088/1742-6596/1342/1/012068.

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36

Avignone, F. T., D. Abriola, R. L. Brodzinski, J. I. Collar, R. J. Creswick, D. E. DiGregorio, H. A. Farach, et al. "Solar axion experiments using coherent primakoff conversion in single crystals." Nuclear Physics B - Proceedings Supplements 72 (March 1999): 176–82. http://dx.doi.org/10.1016/s0920-5632(98)00521-0.

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37

Irastorza, I. G., S. Cebrián, E. García, D. González, A. Morales, J. Morales, A. Ortiz de Solórzano, et al. "Prospects for solar axion searches with crystals via Bragg scattering." Nuclear Physics B - Proceedings Supplements 87, no. 1-3 (June 2000): 102–4. http://dx.doi.org/10.1016/s0920-5632(00)00645-9.

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38

Xu, Wenqin, and Steven R. Elliott. "Solar axion search technique with correlated signals from multiple detectors." Astroparticle Physics 89 (March 2017): 39–50. http://dx.doi.org/10.1016/j.astropartphys.2017.01.008.

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39

Adhikari, P., G. Adhikari, E. Barbosa de Souza, N. Carlin, S. Choi, M. Djamal, A. C. Ezeribe, et al. "A search for solar axion induced signals with COSINE-100." Astroparticle Physics 114 (January 2020): 101–6. http://dx.doi.org/10.1016/j.astropartphys.2019.07.004.

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40

Zhitnitsky, Ariel. "Solar flares and the axion quark nugget dark matter model." Physics of the Dark Universe 22 (December 2018): 1–15. http://dx.doi.org/10.1016/j.dark.2018.08.001.

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41

Mori, Kanji. "Axion-like Particles from Nearby Type Ia Supernovae." EPJ Web of Conferences 260 (2022): 06003. http://dx.doi.org/10.1051/epjconf/202226006003.

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Axion-like particles (ALPs) are a class of hypothetical pseudo-scalar particles and can be created in hot astrophysical plasma through the interaction between photons. I calculate the production of ALPs in type Ia supernovae. It is found that many ALPs lighter than a few MeV can be produced in type Ia supernovae. Once produced, heavy ALPs decay into photons during propagation in the interstellar space. I calculate the flux of the decay photons and find that it may be detected by future MeV γ-ray telescopes if a type Ia supernova explodes near the Solar System.

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Derbin, A. V., I. S. Drachnev, A. S. Kayunov, and V. N. Muratova. "Constraints on the axion-electron coupling constant for solar axions appearing owing to bremsstrahlung and the compton process." JETP Letters 95, no. 7 (June 2012): 339–44. http://dx.doi.org/10.1134/s002136401207003x.

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Vinyoles, N., A. Serenelli, F. L. Villante, S. Basu, J. Redondo, and J. Isern. "New axion and hidden photon constraints from a solar data global fit." Journal of Cosmology and Astroparticle Physics 2015, no. 10 (October 8, 2015): 015. http://dx.doi.org/10.1088/1475-7516/2015/10/015.

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Cebrián, S., A. Rodríguez, M. Kuster, B. Beltrán, H. Gómez, R. Hartmann, I. G. Irastorza, et al. "Background study for the pn-CCD detector of CERN Axion Solar Telescope." Astroparticle Physics 28, no. 2 (October 2007): 205–15. http://dx.doi.org/10.1016/j.astropartphys.2007.05.006.

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Cantatore, G., M. Karuza, V. Lozza, and G. Raiteri. "Search for solar Axion Like Particles in the low energy range at CAST." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 617, no. 1-3 (May 2010): 502–4. http://dx.doi.org/10.1016/j.nima.2009.10.098.

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Onuki, Yoshiyuki, Johnny Alejandro Mora Grimaldo, Tatsuki Ose, Hiroaki Aihara, Yoshizumi Inoue, Yoshio Kamiya, Kenji Shimazoe, et al. "Studies of radioactive background in SOI pixel detector for solar axion search experiment." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 924 (April 2019): 448–51. http://dx.doi.org/10.1016/j.nima.2018.07.056.

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Fraser, G. W., A. M. Read, S. Sembay, J. A. Carter, and E. Schyns. "Potential solar axion signatures in X-ray observations with the XMM–Newton observatory." Monthly Notices of the Royal Astronomical Society 445, no. 2 (October 15, 2014): 2146–68. http://dx.doi.org/10.1093/mnras/stu1865.

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Gautham, A. P., Francesca Calore, Pierluca Carenza, Maurizio Giannotti, Dieter Horns, Julian Kuhlmann, Jhilik Majumdar, et al. "Reconciling hints on axion-like-particles from high-energy gamma rays with stellar bounds." Journal of Cosmology and Astroparticle Physics 2021, no. 11 (November 1, 2021): 036. http://dx.doi.org/10.1088/1475-7516/2021/11/036.

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Abstract It has been recently claimed by two different groups that the spectral modulation observed in gamma rays from Galactic pulsars and supernova remnants can be due to conversion of photons into ultra-light axion-like-particles (ALPs) in large-scale Galactic magnetic fields. While we show the required best-fit photon-ALP coupling, gaγ ∼ 2 × 10-10 GeV-1, to be consistent with constraints from observations of photon-ALPs mixing in vacuum, this is in conflict with other bounds, specifically from the CAST solar axion limit, from the helium-burning lifetime in globular clusters, and from the non-observations of gamma rays in coincidence with SN 1987A. In order to reconcile these different results, we propose that environmental effects in matter would suppress the ALP production in dense astrophysical plasma, allowing to relax previous bounds and make them compatible with photon-ALP conversions in the low-density Galactic medium. If this explanation is correct, the claimed ALP signal would be on the reach of next-generations laboratory experiments such as ALPS II.

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LANGACKER, P., R. D. PECCEI, and T. YANAGIDA. "INVISIBLE AXIONS AND LIGHT NEUTRINOS—ARE THEY CONNECTED?" Modern Physics Letters A 01, no. 09 (November 1986): 541–52. http://dx.doi.org/10.1142/s0217732386000683.

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Physical arguments involving the solar neutrino problem are given which connect the scale of U (1)PQ breakdown with that of the spontaneous breakdown of lepton number. In the simplest model, the Majoron transmutes itself into the invisible axion as a soft symmetry breaking parameter is turned on. Some consequences of this idea are discussed. These include a suggestion that the origin of the baryon symmetry of the Universe is connected with an induced lepton number asymmetry produced at temperatures of order VPQ and the possibility that νμ→ντ oscillations may be observable at accelerators.

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TUAN, S. F. "SO(10) FOR GRAND UNIFICATION?" Modern Physics Letters A 07, no. 08 (March 14, 1992): 641–51. http://dx.doi.org/10.1142/s0217732392000616.

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In this brief review, we present the arguments both theoretical and experimental in favor of the simple group SO(10) as the first approximation towards grand unification. The physical phenomena of the solar neutrino problem which motivate existence of neutrino mass, the recent LEP data which rule out the simple SU(5) (and perhaps supersymmetric SU(5) if tied also to the solar neutrino problem) model for which vanishing neutrino masses would be logical, coupled with attractive features like accommodating the invisible axion and a τ neutrino mass acceptable to cosmology, converge towards a two-step SO(10) model with intermediate mass scale of order 1011 GeV . We comment on the status of a second Z′ in a model of the spontaneous breakdown of SO(10) which is particularly conservative in that very little of the standard picture is altered.

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