A novel experiment is introduced to detect photon-axion conversion independent of the dark-matter hypothesis in a broad mass-range called WISP Interferometer (WINTER). The setup consists of a free-space Mach-Zehnder-type interferometer incorporating an external magnetic field and vacuum in one of the arms, where photon-axion mixing occurs via the Primakoff effect and is detected through changes in amplitude. The expected axion-induced signal is then modulated by polarization changes. The experiment is designed to integrate a Fabry-Perot cavity with a finesse of 105 that will be operated in a vacuum environment, significantly enhancing the sensitivity. It is projected to reach the Dine-Fischler-Srednicki-Zhitnitsky theoretical line with photon-axion coupling sensitivities down to ga gamma gamma similar or equal to 3.7 & times; 10-14 GeV-1 for axion masses up to 380 mu eV.

The ADAMOS (Axion Daily Modulation Searches) project aims to explore the nature of dark matter (DM) through a novel axion haloscope experiment. We propose to construct a fixed-frequency cavity resonator operating at 20 GHz at the University of Hamburg, using an innovative "thin-shell" design that preserves a large detection volume at high frequencies. The experiment will be installed in an existing 14 T superconducting magnet and connected to a highly sensitive RF chain with continuous in situ calibration to eliminate temperature-dependent gain drifts, constituting an essential improvement based on lessons learned from previous attempts. ADAMOS will conduct simultaneous searches for three classes of axion signals: (1) conventional cold DM axions, (2) relativistic axions from axion quark nugget annihilations exhibiting daily modulations, and (3) transient enhancements from streaming DM. By targeting this unexplored frequency regime with a robust, calibrated, and versatile setup, ADAMOS will open new discovery channels in a previously unexplored region of the dark sector.

Abstract Catastrophic earthquakes (EQs) (M ≥ 8) and global ionospheric plasma variations exhibit unexpected planetary orbital periodicities that cannot be explained by known (geo)physical processes. In this study, we identify a robust pre seismic signature in the Total Electron Content (TEC) of the ionosphere that precedes major EQs by up to two months. This finding leads to a novel forecasting method for large magnitude events, providing a significant advance warning window. We propose that the underlying causal triggering mechanism for such correlated phenomena fits-in the scenario of gravitational focusing of galactic dark matter (DM) streams by the solar system bodies. In this framework, Earth based observational tools like the global GPS network can serve a dual role: monitoring terrestrial dynamics and acting as possible sensitive detectors for DM. We demonstrate how continuous GPS recordings can be exploited to project, in real time, the likely timing and location of major seismic events. This interdisciplinary approach provides a novel route to enhance the reliability of catastrophic EQ forecasting. Concurrently, it offers a new method for the direct detection of the dark sector following otherwise unexpected planetary dependencies. While the Axion Quark Nugget (AQN) framework provides an interesting basis for these results, the identified precursors remain model-independent.

High-throughput physics experiments require efficient and increasingly complex real-time processing. This paper presents a modular, software-defined platform combining high-bandwidth PCIe digitizers with consumer GPUs to achieve continuous, zero-dead-time data acquisition. Utilizing NVIDIA CUDA, the system provides a scalable pipeline for real-time fast Fourier transforms and statistical averaging. Benchmarks demonstrate that the platform can sustain continuous processing at sampling rates up to 500 MSa/s, effectively managing data throughputs of 1 GB/s. To validate the in-situ zero-dead-time architecture, end-to-end phase continuity tests were conducted, constraining fractional data loss to below 10^-12. Furthermore, long-term system stability was demonstrated through an uninterrupted one-month data acquisition run. In its current deployment for the WISPLC dark matter experiment, the platform operates at 124 MSa/s with a resolution bandwidth of 0.1 Hz. This implementation enabled a significant reduction in data storage requirements using real-time spectral averaging. The callback-driven software architecture, multi-GPU workload distribution, and custom hardware shielding solutions are detailed, establishing this platform as a flexible and cost-effective alternative to traditional hardware-based pipelines.

Axions and other very weakly interacting slim particles (WISPs), with masses below 1 GeV, arise naturally in many extensions of the Standard Model of particle physics. In particular, they could offer a new framework to explain the nature of dark matter and may help address a range of puzzling observations in astrophysics and particle physics. This review provides an overview of ongoing WISP searches and outlines the prospects for the next decade, spanning their theoretical motivation, indirect signatures in astrophysical observations, and dedicated laboratory experiments. It is based on the work carried on by the EU-funded COST Action “Cosmic WISPers in the Dark Universe: Theory, astrophysics, and experiments” (CA21106, https://www.cost.eu/actions/CA21106). This network plays a key role in coordinating and supporting WISP searches across Europe, while also contributing to the development of a roadmap aimed at securing European leadership in this research area. It is emphasized that Europe is currently pursuing a rich, diverse, and cost-effective experimental program, with the potential to deliver one or more transformative discoveries.

Celestial observations often exhibit inexplicable planetary dependencies when the timing of an observable is projected onto planetary heliocentric positions. This is possible only for incident, non-relativistic streams. Notably, the celebrated dark matter (DM) in the Universe can form streams in our vicinity with speeds of about 240 km/s. Since gravitational impact scales with 1/(velocity)^2, all solar system objects, including the Sun and the Moon, act as strong gravitational lenses, with their focal planes located within the solar system. Even the Moon can focus penetrating particles toward the Earth at speeds of up to approximately 400 km/s, covering a large portion of the phase space of DM constituents. Consequently, the unexpected planetary dependencies of solar system observables may provide an alternative to Zwicky's tension regarding the overestimated visible cosmic mass. In this work, an overlooked but unexpected planetary dependency of any local observable serves as an analogue to Zwicky's cosmic measurements, particularly if a similar mysterious behavior has been previously noted. Thus, a persistent, unexpected planetary dependency represents a new tension between observation and expectation. The primary argument supporting DM in line with Zwicky's paradigm is this planetary dependency, which, on a local scale, constitutes the novel tension between observation and expectation. In particular, the recurrent planetary dependency of diverse observables mirrors Zwicky's cosmic tension with the overestimated visible mass. No other approach accounts for so many otherwise striking and mysterious observations in physics and medicine.

It has been previously advocated that the presence of the daily and annual modulations of the axion flux on the Earth's surface may dramatically change the strategy of the axion searches. The arguments were based on the so-called Axion Quark Nugget (AQN) dark matter model which was originally put forward to explain the similarity of the dark and visible cosmological matter densities Omega dark Omega visible. In this framework, the population of galactic axions with mass 10-6 eV ma 10-3 eV and velocity hvai 10-3c will be accompanied by axions with typical velocities hvai 0.6c emitted by AQNs. Furthermore, in this framework, it has also been argued that the AQN-induced axion daily modulation (in contrast with the conventional weakly interactive massive particle paradigm) could be as large as (10-20)%, representing the main motivation for the present investigation. We argue that the daily modulations along with the broadband detection strategy can be very useful tools for the discovery of such relativistic axions. The data from the CAST-CAPP detector have been used following such arguments. Unfortunately, due to the dependence of the amplifier chain on temperature-dependent gain drifts and other factors, we could not conclusively show the presence or absence of a dark sector-originated daily modulation. However, this proof of principle analysis procedure can serve as a reference for future studies.

Dunkle Materie (DM) came from unexpected cosmological observations. Nowadays within our solar system, diverse observations also defy conventional explanations, like the main physical process(es) underlying the heating of the different solar atmospheric layers. Streaming DM offers a viable common scenario following gravitational focusing by the solar system bodies. This fits as the underlying process behind the solar cycle, which was the first signature suggesting a planetary dependency. The challenge, since 1859, is to find a remote planetary impact, beyond the extremely feeble planetary tidal force. We stress the possible involvement of an external impact by some overlooked "streaming invisible matter", which reconciles all investigated mysterious observations mimicking a not extant remote planetary force. Unexpected planetary relationships exist for both the dynamic Sun and Earth, reflecting multiple signatures for streaming DM. The local reasoning & agrave; la Zwicky is also suggestive for searches including puzzling biomedical phenomena. Favorite DM candidates are anti-quark-nuggets, magnetic monopoles, dark photons, or the composite "pearls". Then, anomalies within the solar system are the manifestation of the dark Universe. The tentative streaming DM scenario enhances spatiotemporally the DM flux favouring conditions for direct DM detection or extracting energy from the not-so-invisible as anticipated dark sector.

The Proton EDM Experiment (pEDM) is the first direct search for the proton electric dipole moment (EDM) with the aim of being the first experiment to probe the Standard Model (SM) prediction of any particle EDM. Phase-I of pEDM will achieve 10^-29 e·cm, improving current indirect limits by four orders of magnitude. This will establish a new standard of precision in nucleon EDM searches and offer a unique sensitivity to better understand the Strong CP problem. The experiment is ideally positioned to explore physics beyond the Standard Model (BSM), with sensitivity to axionic dark matter via the signal of an oscillating proton EDM and across a wide mass range of BSM models from 𝒪(1GeV) to 𝒪(10^3TeV). Utilizing the frozen-spin technique in a highly symmetric storage ring that leverages existing infrastructure at Brookhaven National Laboratory (BNL), pEDM builds upon the technological foundation and experimental expertise of the highly successful Muon g-2 Experiments. With significant R&D and prototyping already underway, pEDM is preparing a conceptual design report (CDR) to offer a cost-effective, high-impact path to discovering new sources of CP violation and advancing our understanding of fundamental physics. It will play a vital role in complementing the physics goals of the next-generation collider while simultaneously contributing to sustaining particle physics research and training early-career researchers during gaps between major collider operations.

Axions and axion-like particles (ALPs) are well-motivated dark matter (DM) candidates that couple with photons in external magnetic fields. The parameter space around m a ∼ 50 meV remains largely unexplored by haloscope experiments. We present the first prototype of Weakly Interacting Sub-eV Particles (WISP) Searches on a Fiber Interferometer (WISPFI), a table-top, model-independent scheme based on resonant photon–axion conversion in a hollow-core photonic crystal fiber (HC-PCF) integrated into a Mach–Zehnder interferometer (MZI). Operating near a dark fringe with active phase-locking, combined with amplitude modulation, the interferometer converts axion-induced photon disappearance into a measurable signal. A 2 W, 1550 nm laser is coupled with a 1 m-long HC-PCF placed inside a ∼2 T permanent magnet array, probing a fixed axion mass of m a ≃ 49 meV with a projected sensitivity of g a γ γ ≳ 1.3× 10 − 9 GeV−1 for a measurement time of 30 days. Future upgrades, including pressure tuning of the effective refractive index and implementation of a Fabry–Pérot cavity, could extend the accessible mass range and improve sensitivity, establishing WISPFI as a scalable platform to explore previously inaccessible regions of the axion parameter space.

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 μm range and their density is about equal to the nuclear density with an expected flux of about 0.4 / km^2 / year. For the typical velocity of DM constituents (∼250 km/s), the solar system bodies act as highly performing gravitational lenses. Here we assume that DM streams or clusters are impinging, e.g., on the Earth, as it was worked out for DM axions and Weakly Interacting Massive Particles (WIMPs). Interestingly, in the LHC beam, unforeseen beam losses are triggered by so-called Unidentified Falling Objects (UFOs), which are believed to be constituted of dust particles with a size in the μm range and a density of several orders of magnitude lower than AQNs. Prezeau suggested that streaming DM constituents incident on the Earth should result in jet-like structures ("hairs") exiting the Earth, or a kind of caustics. Such ideas open novel directions in the search for DM. This work suggests a new analysis of the UFO results at the Large Hadron Collider (LHC), assuming that they are eventually, at least partly, due to AQNs. Firstly, a reanalysis of the existing data from the 4000 beam monitors since the beginning of the LHC is proposed, arguing that dust and AQNs should behave differently. The feasibility of this idea has been discussed with CERN accelerator people and potential collaborators.

Dark matter (DM) dominates our universe, while its nature remains unknown. To unravel its composition is of fundamental importance for all physics. The solid Earth, with its atmosphere, could be the new target and detector of "invisible matter". Any not well-understood dynamical behavior is of potential interest, e.g., the anomalous annual temperature excursions in the stratosphere and the global electron content of the Ionosphere (with its anomalous behavior around December-January known since 1937) also show planetary relationship, which is the ultimate signature for streaming DM involvement. Because this to happen is not expected within known physics, since a remote planetary tidal force is extremely feeble to cause any noticeable impact. Following this reasoning, here we present novel results combining the dynamical behavior of spatiotemporally occurring atmospheric activity with inner Earth activity like earthquakes. This finding should encourage geoscience to make the Earth the as-yet overlooked observatory for (streaming) DM, even parasitically, because Earth's dynamic atmosphere and seismic activity are monitored continuously for other reasons. Of note, such an endeavor would be a natural extension of using the Earth to detect conventional cosmic rays. Exotic cosmic particles like anti quark nuggets, magnetic monopoles, and hidden-sector photons are among the most promising candidates. Other as-yet unpredicted DM constituents could make the surprise.

A novel table-top experiment is introduced to detect photon-axion conversion: WISP searches on a fiber interferometer (WISPFI). The setup consists of a Mach-Zehnder-type interferometer with a fiber placed inside an external magnetic field, where mixing occurs which is detected by measuring changes in amplitude. Hollow-core photonic crystal fibers (HC-PCF) will be used to achieve resonant mixing that is tuneable by regulating the gas pressure in the fiber. An unexplored axion mass-range (28 meV–100 meV) can be probed reaching the two-photon coupling expected for the QCD axion. Published by the American Physical Society 2024

Hypothetical axions provide a compelling explanation for dark matter and could be emitted from the hot solar interior. The CERN Axion Solar Telescope has been searching for solar axions via their back conversion to x-ray photons in a 9-T 10-m long magnet directed toward the Sun. We report on an extended run with the International Axion Observatory pathfinder detector, doubling the previous exposure time. The detector was operated with a xenon-based gas mixture for part of the new run, providing technical insights for future configurations. No counts were detected in the 95% signal-encircling region during the new run, while 0.75 were expected. The new data improve the axion-photon coupling limit to 5.8×10^{-11}  GeV^{-1} at 95% CL (for m_{a}≲0.02  eV), the most restrictive experimental limit to date.

"Dunkle Materie" (DM) came from unexpected cosmological observations. Nowadays within our solar system, diverse observations also defy conventional explanations, like the main physical process(es) underlying the heating of the different solar atmospheric layers. Streaming DM offers a viable common scenario following gravitational focusing by the solar system bodies. This fits as the underlying process behind the solar cycle, which was the first signature suggesting a planetary dependency. The challenge, since 1859, is to find a remote planetary impact, beyond the extremely feeble planetary tidal force. We stress the possible involvement of an external impact by some overlooked "streaming invisible matter", which reconciles all investigated mysterious observations mimicking a not extant remote planetary force. Unexpected planetary relationships exist for both the dynamic Sun and Earth, reflecting multiple signatures for streaming DM. The local reasoning à la Zwicky is also suggestive for searches including puzzling biomedical phenomena. Favourite DM candidates are anti-quark-nuggets, magnetic monopoles, dark photons, or the composite "pearls". Then, anomalies within the solar system are the manifestation of the dark Universe. The tentative streaming DM scenario enhances spatiotemporally the DM flux favouring conditions for direct DM detection or extracting energy from the not-so-invisible as anticipated dark sector. Понятие темной материи (DM) введено для объяснения неожиданных результатов космологических наблюдений. В настоящее время разные явления, наблюдаемые в нашей солнечной системе, также не поддаются традиционным объяснениям, например, основные физические процессы, лежащие в основе нагрева различных слоев солнечной атмосферы. Концепция потоков DM с их последующей гравитационной фокусировкой телами Солнечной системы предлагает жизнеспособный общий сценарий для понимания таких явлений. Возможно это основной процесс, ответственный за солнечные циклы, у которых были обнаружены первыe признаки зависимости от параметров планет. Уже в 1859г. была поставлена задача найти удаленное планетарное воздействие, отличное от чрезвычайно слабой планетарной приливной силы. Мы подчеркиваем возможную причастность внешнего воздействия неучтенного "потока невидимой материи", что согласуется со всеми загадочными наблюдениями, ранее исследованными с привлeчением несуществующей удаленной планетарной силы. Множество следов "потоковой" ТМ проявляются в разного рода неожиданных связах, как динамического Солнца, так и и Земли. В частности, рассуждение в духе Цвикки наводит на размышления о поиске загадочных биомедицинских явлений. Предпочтительными носителями ТМ являются - крупицы антикварковой материи, магнитные монополи, темные фотоны или составные "жемчужины". Таким образом, аномалии внутри Солнечной системы являются проявлениями темной Вселенной. Неявный сценарий потока темной материи расширяет пространственно- временное распределение темной материи, создавая лучшие условия для прямого обнаружения или извлечения энергии из ранее недооцененного темного сектора. Предложенный предварительный сценарий предполагает усиление пространственно-временного потока темной материи, создавая условия для прямого обнаружения темной материи или извлечения энергии из невидимого, как предполагалось, темного сектора.

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, whose impact on the atmosphere is unequivocal; this points at an additional energy source of exo-solar origin. A viable concept behind such observations is based on possible gravitational focusing by the Sun and its planets towards the Earth of low-speed invisible streaming matter; its influx towards the Earth gets temporally enhanced. Only a somehow "strongly" interacting invisible streaming matter with the small upper atmospheric screening can be behind the observed temperature excursions. Ordinary dark matter (DM) candidates like axions or WIMPs, cannot have any noticeable impact. The associated energy deposition is $\mathcal{O}(\sim 1000\, \mathrm{GeV}/{{\mathrm{cm}}^2}/\mathrm{sec})$. The atmosphere has been uninterruptedly monitored for decades. Therefore, the upper atmosphere can serve as a novel (low-threshold) detector for the dark Universe, with built-in spatiotemporal resolution while the solar system gravity acts temporally as a signal amplifier. Interestingly, the anomalous ionosphere shows a relationship with the inner earth activity like earthquakes. Similarly investigating the transient sudden stratospheric warmings within the same reasoning, the nature of the assumed "invisible streams" could be deciphered.

We investigate the prospects for the direct detection of dark matter (DM) particles, incident on the upper atmosphere. A recent work relating the burst-like temperature excursions in the stratosphere at heights of ≈38–47 km with low speed incident invisible streaming matter is the motivation behind this proposal. As an example, dark photons could match the reasoning presented in that work provided they constitute part of the local DM density. Dark photons emerge as a U(1) symmetry within extensions of the standard model. Dark photons mix with real photons with the same total energy without the need for an external field, as would be required, for instance, for axions. Furthermore, the ionospheric plasma column above the stratosphere can resonantly enhance the dark photon-to-photon conversion. Noticeably, the stratosphere is easily accessible with balloon flights. Balloon missions with up to a few tons of payload can be readily assembled to operate for months at such atmospheric heights. This proposal is not limited to streaming dark photons, as other DM constituents could be involved in the observed seasonal heating of the upper stratosphere. Therefore, we advocate a combination of different types of measurements within a multi-purpose parallel detector system, in order to increase the direct detection potential for invisible streaming constituents that affect, annually and around January, the upper stratosphere.

A novel table-top experiment is introduced to detect photon-axion conversion: WISP Searches on a Fiber Interferometer (WISPFI). The setup consists of a Mach-Zehnder-type interferometer with a fiber placed inside an external magnetic field (14 T), where mixing occurs and is detected by measuring changes in phase/amplitude. We will use hollow-core photonic crystal fibers (HC-PCF) to achieve resonant mixing that is tuneable by regulating the gas pressure in the fiber. An unexplored axion mass-range (50 meV - 100 meV) can be probed reaching the two-photon coupling expected for the QCD axion.

Planetary effects have been attributed to biological processes without scientific rigor. Some generic invisible slow matter from the dark Universe in the form of streams or clusters with occasional large flux enhancements due to planetary gravitational focusing is the driving idea and the only explanation we have. This work extends previous observations regarding relationships of diagnosed cancer (melanoma), which may provide additional insight into previously unrecognized factors also affecting other biological processes. Biological measurements in vitro and mutation rates are promising.