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Related papers: The Pierre Auger Exotic Events and Axion Quark Nug…

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Telescope Array (TA) experiment has recorded \cite{Abbasi:2017rvx,Okuda_2019} several short time bursts of air shower like events. These bursts are very distinct from conventional single showers, and are found to be strongly correlated with…

High Energy Physics - Phenomenology · Physics 2020-12-18 Ariel Zhitnitsky

The Antarctic Impulse Transient Antenna (\textsc{ANITA}) collaboration [1-3] has reported two anomalous events with noninverted polarity. These events are hard to explain in terms of conventional cosmic rays (CRs). We explore a new possible…

High Energy Physics - Phenomenology · Physics 2022-09-27 Xunyu Liang , Ariel Zhitnitsky

Telescope Array (TA) experiment has recorded \cite{Abbasi:2017rvx,Okuda_2019} several short time bursts of air shower like events. These bursts are very distinct from conventional single showers, and are found to be strongly correlated with…

High Energy Physics - Phenomenology · Physics 2022-03-24 Xunyu Liang , Ariel Zhitnitsky

We advocate an idea that the Axion Quark Nuggets (AQN) hitting the Earth can be detected by analysing the infrasound, acoustic and seismic waves which always accompany the AQN's passage in the atmosphere and underground. Our estimates for…

High Energy Physics - Phenomenology · Physics 2022-02-28 Dmitry Budker , Victor V. Flambaum , Ariel Zhitnitsky

Axion quark nuggets (AQNs) are hypothetical objects with a mass greater than a few grams and sub-micrometer size, formed during the quark-hadron transition. Originating from the axion field, they offer a possible resolution of the…

Cosmology and Nongalactic Astrophysics · Physics 2024-10-22 Fereshteh Majidi , Xunyu Liang , Ludovic Van Waerbeke , Ariel Zhitnitsky , Michael Sekatchev , Julian S. Sommer , Klaus Dolag , Tiago Castro

It has been recently argued in \cite{Bertolucci:2016xjm, Zioutas:2020ndf, Zioutas:2023ybw} that numerous enigmatic observations remain challenging to explain within the framework of conventional physics. These anomalies include unexpected…

High Energy Physics - Phenomenology · Physics 2025-06-23 Ariel Zhitnitsky , Marios Maroudas

Axion quark nuggets (AQNs) are hypothetical objects with nuclear density that would have formed during the quark-hadron transition and could make up most of the dark matter today. These objects have a mass greater than a few grams and are…

Cosmology and Nongalactic Astrophysics · Physics 2025-11-26 Michael Sekatchev , Xunyu Liang , Fereshteh Majidi , Ben Scully , Ludovic Van Waerbeke , Ariel Zhitnitsky

It has been recently argued [1-3] that there is a strong component of the diffuse far-ultraviolet (FUV) background which is hard to explain by conventional physics in terms of the dust-scattered starlight. We propose that this excess in FUV…

High Energy Physics - Phenomenology · Physics 2022-03-17 Ariel Zhitnitsky

We advocate an idea that the presence of the daily and annual modulations of the axion flux on the Earth surface may dramatically change the strategy of the axion searches. Our computations are based on the so-called Axion Quark Nugget…

High Energy Physics - Phenomenology · Physics 2020-02-19 Dmitry Budker , Victor V. Flambaum , Xunyu Liang , Ariel Zhitnitsky

Macroscopic dark matter with dominating strong interactions, supposed to be composites, represents an alternative to the most popular WIMP particles. Predicted in various models as strangelets, nuclearites, nuggets, having different…

High Energy Physics - Phenomenology · Physics 2026-04-01 Ionel Lazanu , Konstantin Zioutas

The XMM-Newton observatory shows evidence, with a 11$\sigma$ confidence level, for seasonal variation of the X-ray background in the near-Earth environment in the 2-6 keV energy range (Fraser et al. 2014). The authors argue that the…

High Energy Astrophysical Phenomena · Physics 2023-05-03 Shuailiang Ge , Hikari Rachmat , Md Shahriar Rahim Siddiqui , Ludovic Van Waerbeke , Ariel Zhitnitsky

If the dark matter of our galaxy is composed of nuggets of quarks or antiquarks in a colour superconducting phase there will be a small but non-zero flux of these objects through the Earth's atmosphere. A nugget of quark matter will deposit…

High Energy Astrophysical Phenomena · Physics 2011-07-08 Kyle Lawson

We study the new mechanism of the axion production suggested recently in [1,2]. This mechanism is based on the so-called Axion Quark Nugget (AQN) dark matter model, which was originally invented to explain the similarity of the dark and…

Cosmology and Nongalactic Astrophysics · Physics 2020-02-19 Xunyu Liang , Alexander Mead , Md Shahriar Rahim Siddiqui , Ludovic Van Waerbeke , Ariel Zhitnitsky

Ball lighting (BL) has been observed for centuries. There are large number of books, review articles, and original scientific papers devoted to different aspects of BL phenomenon. Yet, the basic features of this phenomenon have never been…

High Energy Physics - Phenomenology · Physics 2025-08-26 Ariel Zhitnitsky

Recent work from the last years has raised the possibility that a portion of Dark Matter could consist of exotic particles, such as axion (anti)quark nuggets (AQN, A\bar{Q}N). After a brief review outlining the main features of axion…

High Energy Physics - Phenomenology · Physics 2024-05-22 Ionel Lazanu , Mihaela Parvu

There have been several reports of exotic nuclear fragments, with highly unusual charge to mass ratio, in cosmic ray experiments. Although there exist experimental uncertainties which make them, at best, only candidate "exotic" events, it…

Astrophysics · Physics 2009-10-31 Shibaji Banerjee , Sanjay K. Ghosh , Amal Mazumdar , Sibaji Raha , Debapriyo Syam

The Horizon-10T collaboration \cite{Beisembaev:2016cyg,2017EPJWC.14514001B,Beznosko:2019cI,2019EPJWC.20806002B,Beisembaev:2019nzd} have reported observation of Multi-Modal Events (MME) containing multiple peaks suggesting their clustering…

High Energy Physics - Phenomenology · Physics 2021-10-19 Ariel Zhitnitsky

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, $\Omega_{\rm DM}\approx…

High Energy Physics - Phenomenology · Physics 2021-06-25 Ariel Zhitnitsky

The Pierre Auger Observatory for cosmic rays provides a laboratory for studying fundamental interactions at energies well beyond those available at colliders. In addition to hadrons or photons, Auger is sensitive to ultra-high energy…

High Energy Physics - Phenomenology · Physics 2014-11-18 Luis Anchordoqui , Tao Han , Dan Hooper , Subir Sarkar

Anti-quark nuggets (AQNs) have been suggested to solve the dark matter (DM) and the missing antimatter problem in the universe and have been proposed as an explanation of various observations. Their size is in the {\mu}m range and their…

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