“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
We report on a first measurement with a sensitive opto-mechanical force sensor designed for the direct detection of coupling of real chameleons to matter. These dark energy candidates could be ...produced in the Sun and stream unimpeded to Earth. The KWISP detector installed on the CAST axion search experiment at CERN looks for tiny displacements of a thin membrane caused by the mechanical effect of solar chameleons. The displacements are detected by a Michelson interferometer with a homodyne readout scheme. The sensor benefits from the focusing action of the ABRIXAS X-ray telescope installed at CAST, which increases the chameleon flux on the membrane. A mechanical chopper placed between the telescope output and the detector modulates the incoming chameleon stream. We present the results of the solar chameleon measurements taken at CAST in July 2017, setting an upper bound on the force acting on the membrane of 80pN at 95% confidence level. The detector is sensitive for direct coupling to matter 104≤βm≤108, where the coupling to photons is locally bound to βγ≤1011.
Hypothetical low-mass particles, such as axions, provide a compelling explanation for the dark matter in the universe. Such particles are expected to emerge abundantly from the hot interior of stars. ...To test this prediction, the CERN Axion Solar Telescope (CAST) uses a 9 T refurbished Large Hadron Collider test magnet directed towards the Sun. In the strong magnetic field, solar axions can be converted to X-ray photons which can be recorded by X-ray detectors. In the 2013-2015 run, thanks to low-background detectors and a new X-ray telescope, the signal-to-noise ratio was increased by about a factor of three. Here, we report the best limit on the axion-photon coupling strength (0.66 × 10-10 GeV-1 at 95% confidence level) set by CAST, which now reaches similar levels to the most restrictive astrophysical bounds.
Abstract
The CAST-CAPP axion haloscope, operating at CERN inside the CAST dipole magnet, has searched for axions in the 19.74
μ
eV to 22.47
μ
eV mass range. The detection concept follows the ...Sikivie haloscope principle, where Dark Matter axions convert into photons within a resonator immersed in a magnetic field. The CAST-CAPP resonator is an array of four individual rectangular cavities inserted in a strong dipole magnet, phase-matched to maximize the detection sensitivity. Here we report on the data acquired for 4124 h from 2019 to 2021. Each cavity is equipped with a fast frequency tuning mechanism of 10 MHz/ min between 4.774 GHz and 5.434 GHz. In the present work, we exclude axion-photon couplings for virialized galactic axions down to
g
a
γ
γ
= 8 × 10
−14
GeV
−1
at the 90% confidence level. The here implemented phase-matching technique also allows for future large-scale upgrades.
Inverted V sign Maroudas, Eleni M.; Ayoob, Andres R.; DiSantis, David J.
Abdominal Radiology,
05/2016, Letnik:
41, Številka:
5
Journal Article, Book Review
A
bstract
We present results of the Relic Axion Dark-Matter Exploratory Setup (RADES), a detector which is part of the CERN Axion Solar Telescope (CAST), searching for axion dark matter in the 34.67
...μ
eV mass range. A radio frequency cavity consisting of 5 sub-cavities coupled by inductive irises took physics data inside the CAST dipole magnet for the first time using this filter-like haloscope geometry. An exclusion limit with a 95% credibility level on the axion-photon coupling constant of g
aγ
≳ 4 × 10
−
13
GeV
−
1
over a mass range of 34
.
6738
μ
eV
< m
a
<
34
.
6771
μ
eV is set. This constitutes a significant improvement over the current strongest limit set by CAST at this mass and is at the same time one of the most sensitive direct searches for an axion dark matter candidate above the mass of 25
μ
eV. The results also demonstrate the feasibility of exploring a wider mass range around the value probed by CAST-RADES in this work using similar coherent resonant cavities.
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 problem, the origin of sunspots, the trigger mechanism of solar flares, but also the open issue since the 1850's on the planetary impact of the active Sun. At the same time, several terrestrial observations in the dynamic Earth's atmosphere such as the ionospheric ionisation around December are unexpected within conventional physics. Following this work, the suggested common solution of all these conventionally unexplained phenomena is based on an external triggering caused by low-speed streaming constituents from the dark sector, being gravitationally focused or deflected by the Sun and the orbiting planets. Evidence in support of this hypothesis and on the existence of one or more streams or clusters has been provided based on a coincidence analysis of long-term astrophysical and planetary datasets. Of note, the planetary correlation is the novel key signature. Finally, a redefined strategy for direct Dark Matter searches focused on streaming Dark Matter is proposed. This novel procedure has been successfully implemented in the CAST-CAPP detector at CERN searching for Dark Matter axions.
This report addresses the time dependence of normal biomedical processes. The conception rate in humans shows relationships that strikingly coincide with planetary periodicities like the orbital ...period of Jupiter, the 11 years solar cycle and the 237 days Jupiter–Venus synod, and the combined dependence on Jupiter with Mars’ orbital position. The birth rates are used as conception surrogates based on a data set available from the Minnesota Department of Health. The statistical significance of each independent analysis (far) exceeds 5
σ
. This result cannot be explained with known science. As with other observations in Physics and Medicine (i.e., melanoma), tentatively the only viable explanation we have is the otherwise invisible streaming matter from the dark Universe we live in. The favored dark matter scenario involves streams or clusters as opposed to an isotropic dark sector. The dark Universe scenario has been the driving idea for this type of work. The high sensitivity of living matter to the tiniest external impact might help identify the nature of the dark matter particles, a major problem in all physics since the 1930s. This work is a model for evaluating other biological processes and mutation rates.
The manifestation of the dark Universe begun with unexpected large-scale astronomical observations. Here we are investigating the possible origin of small-scale anomalies, like that of the annually ...observed temperature anomalies in the stratosphere (38.5 – 47.5 km). Unexpectedly within known physics, we observe a planetary relationship of the daily stratospheric temperature distribution. Interestingly, its spectral shape does not match concurrent solar activity (F10.7 line), or Sun’s EUV emission, whose impact on the atmosphere is unequivocal; this different behaviour 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. When the Sun–Earth direction aligns with an invisible stream, its influx towards the Earth gets temporally enhanced. We denote generic constituents from the dark Universe as “invisible matter”, in order to distinguish them from ordinary dark matter candidates like axions or WIMPs, which cannot have any noticeable impact. Moreover, the observed peaking planetary relations exclude on their own any conventional explanation, be it due to any remote planetary interaction, or, intrinsic to the atmosphere. Only a somehow “strongly” interacting invisible streaming matter with the little screened upper stratosphere (ρoverhead≈1 gr/cm3) can be behind the occasionally observed temperature increases. We also estimate an associated energy deposition O(∼W/m2), which is variable over the 11-years solar cycle. For the widely assumed picture of a quasi not-interacting dark Universe, this new exo-solar energy is enormous. Noticeably, our observationally derived conclusions are not in conflict with the null results of underground dark matter experiments, given that a similar planetary relationship is not observed even underneath the stratosphere (16–31 km). Interestingly, the atmosphere is uninterruptedly monitored since decades. Therefore, it can serve also parasitically as a novel (low threshold) detector for the dark Universe, with built-in spatiotemporal resolution and the Sun acting temporally as signal amplifier. Known phenomena (e.g., NAO, QBO and ENSO) influencing the general atmospheric circulation do not interfere with this work, since they occur geographically elsewhere, and, they have different periodicities. In future, analysing more observations, for example, from the anomalous ionosphere, or, the transient sudden stratospheric warmings, the nature of the assumed “invisible streams” could be deciphered.
PDF
