Extensive Air Showers with unusual structure

Beznosko, D.; Beisembaev, R. U.; Baigarin, Kanat; Beisembaeva, Elena; Dalkarov, O. D.; Ryabov, V. A.; Sadykov, T. Kh.; Shaulov, S.B.; Stepanov, A. V.; Vildanova, Marina; Vildanov, N. G.; Zhukov, V. V.

doi:10.1051/epjconf/201714514001

Cited by 16 publications

(27 citation statements)

References 3 publications

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“…In this work we discuss two naively unrelated stories. The first one deals with the recent puzzling observations [1][2][3][4][5] by the Horizon-10T (H10T) collaboration of the Multi-Modal Events (MME).…”

Section: Introductionmentioning

confidence: 99%

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Multi-Modal Clustering Events Observed by Horizon-10T and Axion Quark Nuggets

Zhitnitsky

2021

Universe

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The Horizon-10T collaboration have reported observation of Multi-Modal Events (MME) containing multiple peaks suggesting their clustering origin. These events are proven to be hard to explain in terms of conventional cosmic rays (CR). We propose that these MMEs might be result of the dark matter annihilation events within the so-called axion quark nugget (AQN) dark matter model, which was originally invented for completely different purpose to explain the observed similarity between the dark and the visible components in the Universe, i.e., ΩDM∼Ωvisible without any fitting parameters. We support this proposal by demonstrating that the observations, including the frequency of appearance, intensity, the spatial distribution, the time duration, the clustering features, and many other properties nicely match the emission characteristics of the AQN annihilation events in atmosphere. We list a number of features of the AQN events which are very distinct from conventional CR air showers. The observation (non-observation) of these features may substantiate (refute) our proposal.

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Section: Introductionmentioning

confidence: 99%

“…We refer to ref. [2] for overview and references of the older observations and studies of such unusual events.…”

mentioning

confidence: 99%

Multi-Modal Clustering Events Observed by Horizon-10T and Axion Quark Nuggets

Zhitnitsky

2021

Universe

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“…This property is common for all other unusual events detected at H8T. 3,4,5) and far from the center (right, 8,9) 4. Unusual events construction using standard events Hypothesis that unusual events described above can be simulated by combination of two standard EAS disks was checked.…”

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confidence: 55%

“…Standard EAS events Standard EAS [5] disks were defined by EAS events simulated by CORSIKA simulation package [6]. These events were used to identify properties of the standard disks.…”

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confidence: 99%

The unusual structure detection in Extensive air shower events at Horizon-8T cosmic rays detector system

Batyrkhanov¹,

Baigarin²,

Beisembaeva³

et al. 2019

Proceedings of the 39th International Conference on High Energy Physics — PoS(ICHEP2018)

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Horizon-8T is a detector system aimed to study Extensive Air Showers (EAS) temporal structure in the energy range of the primary above ~10 16 eV. It is constructed at approximately 3340 meters above the sea level at the Tien Shan high-altitude Science Station, part of Lebedev Physical Institute of the Russian Academy of Sciences. Detector system consists of eight charged particle detection points separated by the distance up to one kilometer.During Physics Run 1 from October 2016 to April 2017, about 8000 total events were detected, a sizable number of which exhibit the unusual spatial and temporal structure of pulses with several maxima (or modes). The separation of the maxima can be from few tens of ns to several hundred ns. The Run 1 dataset suggests that separation between maxima increases with distance from EAS core, which cannot be obtained from simulations, and seem to occur only in events with energy above ~10 17 eV. The overview of Horizon-8T detector system and the details of the unusual events data will be presented.

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“…Model of strangelets in CR allows to solve a number problems in CR, existing for many years. In addition to the above discussed penetrating component and excess of muons, these are events of type Centauro [13,14], halo in γ−families [15], alignment of energetic centers in γ−families [16], repeated fronts of EAS with large delays of about 100 ns and more [17,18].…”

Section: The Properties Of Eas Formed By Strangeletsmentioning

confidence: 99%

Exotic model of the cosmic ray spectrum

Shaulov

2019

EPJ Web Conf.

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A detailed study of the cores of extensive air showers (EAS) at mountain level (Tien-Shan 690 g/cm2) was carried out in the hybrid experiment HADRON. An analysis of the fine structure of the EAS spectrum in the energy region1015 - 1017 (knee) showed that there are two breaks in the spectrum. Along with the previously known break at an energy of 3 · 1015 eV, a change in the slope of the EAS spectrum is observed at an energy slightly below 1017 eV. In addition the use of a large X-ray emulsion chamber (XREC) as a detector of EAS cores allowed us to obtain several new results. An abnormal scaling violation in hadron spectra for Ne ~ 107 (E0 ~ 1016 eV) means the existence of a penetrating component of non-nuclear origin. The conclusion about the non-nuclear origin of the penetrating component in the primary radiation of CR is confirmed by the data about the excess of muons in the EAS containing hadrons of maximum energies. It is assumed that the mass composition of primary cosmic radiation varies sharply at energies of 1015 - 1016 eV, where quasi-nuclei (strangelets) appear instead of nuclei. A new model of the mass composition of cosmic rays in the region of ultrahigh energies is proposed on this basis .

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Extensive Air Showers with unusual structure

Cited by 16 publications

References 3 publications

Multi-Modal Clustering Events Observed by Horizon-10T and Axion Quark Nuggets

Multi-Modal Clustering Events Observed by Horizon-10T and Axion Quark Nuggets

The unusual structure detection in Extensive air shower events at Horizon-8T cosmic rays detector system

Exotic model of the cosmic ray spectrum

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