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We are investigating the possible origin of small-scale anomalies, like the annual stratospheric temperature anomalies. Unexpectedly within known physics, their observed planetary "dependency", does not match concurrent solar activity,…

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

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

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

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

The manifestation of the dark Universe begun with unexpected large scale astronomical observations. Here we are investigating the origin of small scale anomalies, like that of the annually observed temperature anomalies in the stratosphere.…

Earth and Planetary Astrophysics · Physics 2020-04-24 K. Zioutas , A. Argiriou , H. Fischer , S. Hofmann , M. Maroudas , A. Pappa , Y. K. Semertzidis

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

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

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

The Pierre Auger Observatory have reported [1-3] observation of several exotic cosmic ray -like events which apparently related to thunderstorms. These events are much larger in size than conventional cosmic ray events, and they have very…

High Energy Physics - Phenomenology · Physics 2022-08-25 Ariel Zhitnitsky

We advocate for the idea that there is a fundamentally new mechanism for axion production on Earth, as recently suggested in Fischer et al. (2018) and Liang & Zhitnitsky (2018). We specifically focus on production of axions within Earth,…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-29 Kyle Lawson , Xunyu Liang , Alexander Mead , Md Shahriar Rahim Siddiqui , Ludovic Van Waerbeke , Ariel Zhitnitsky

It has been known for quite sometime that the Neutron Stars (NS) can play a role of the Dark Matter (DM) detectors due to many uniques features of NS. We apply these (previously developed) ideas to a specific form of the DM when it is…

High Energy Physics - Phenomenology · Physics 2024-03-18 Ariel Zhitnitsky

As recently advocated in \cite{Fischer:2018niu}, there is a fundamentally new mechanism for the axion production in the Sun and Earth. However, the role of very slow axions in previous studies were neglected because of its negligible…

High Energy Physics - Phenomenology · Physics 2019-01-30 Xunyu Liang , Ariel Zhitnitsky

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

The axion anti-quark nugget (A$\bar{\mathrm{Q}}$N) model was developed to explain in a natural way the asymmetry between matter and antimatter in Universe. In this hypothesis, a similitude between the dark and the visible components exists.…

High Energy Physics - Phenomenology · Physics 2024-07-10 Ionel Lazanu , Mihaela Parvu

The composition of the dark universe although hypothesised, remains one of the biggest mysteries in modern physics. On smaller scales, there are various solar puzzling phenomena which known physics cannot explain like the coronal heating…

High Energy Physics - Experiment · Physics 2024-04-04 M. Maroudas

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

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

We advocate an idea that ``non-baryonic" dark matter in form of nuggets made of standard model quarks and gluons (similar to the old idea of the Witten's strangelets) could play a crucial role in structure formation. The corresponding…

High Energy Physics - Phenomenology · Physics 2023-12-22 Ariel Zhitnitsky

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
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