“Dark Matter” Science-Research, January 2022, Week 4 — summary from Astrophysics Data System, OSTI GOV, Arxiv and DOAJ

Astrophysics Data System — summary generated by Brevi Assistant

We make rotation contour fits to test the superfluid dark matter model. A second searching for is that the superfluid often fits the rotation curves best when the superfluid’s pressure does not carefully look like that of Modified Newtonian Dynamics. The observed optical colors of quasars are generally analyzed in one of two structures: merged models which connect shade to arbitrary alignment of the rising disk along the line-of-sight, and evolutionary models which invoke connections between quasar systems and their environments. We reveal that optically-selected quasars’ halo environments are also independent of their r-W2 optical-infrared colors, while previous work has suggested that mid-infrared-selected obscured quasars occupy more massive halos. 21cm tomography opens a home window to directly study astrophysics and fundamental physics of very early epochs in our Universe’s history, the Epoch of Reionisation and Cosmic Dawn. We display a warm dark matter universe, where the dark matter density parameter Ω_m and WDM mass m_WDM strongly influence both CD and EoR. We propose a dual-path interferometry boosting setup in the cavity axion dark matter searches. Under modern-day cryogenic problems, thermal photons in the cavity are minimal, thus the axion cavity can be thought of as a quantum tool producing single-photons with temporal splittings up. In this paper, we create for the first time a two-component highly communicating massive fragments dark matter model, where a complex scalar and a vector-like fermion play the function of the SIMP DM prospects. On the other hand, the SIMP DM fragments can maintain kinetic stability with the thermal bath up until the DM freeze-out temperature by means of the U^_ gauge couplings. In this work, we study indirect photon signatures of leptophilic dark matter coming from Centaurus A, where a DM thickness spike is believed to have endured to date, contrary to the case of our galaxy. Thinking that the photons gauged from the core of Cen A are originating from SM processes, we derive constraints based on the DM self-annihilation finding that the allowed DM masses and combinings are 40 GeV ≲m_χ̃≲200 GeV and a_R ≲10^-2 specifically.

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OSTI GOV — summary generated by Brevi Assistant

Many astrophysical and cosmological monitorings are best clarified by the existence of dark matter, a mass density which interacts just very weakly with noticeable, baryonic matter. Below, looking for the very weak signals generated by this dark matter strongly inspires the growth of new, ultra-sensitive detector innovations. In this white paper, we outline current ideas in the potential usage of a series of solid-state mechanical picking up modern technologies to aid in the search for dark matter in a number of energy ranges and with a variety of coupling mechanisms. Thick fully-depleted charge-coupled gadgets with high-resistivity silicon are utilized in a large range of scientific applications, from fragment discovery to huge imaging. In this work, we sum up the principles of the skipper-CCD operation and the leads for both sub-GeV dark-matter searches and the discovery of systematic elastic neutrino-nucleus spreading. A brief conversation of the difficulties connected with the building of the anticipated detectors with multi-kilogram target mass is also offered. Right here, the DarkSide-50 experiment at the Laboratori Nazionali del Gran Sasso is a look for dark matter using a double phase time projection chamber with 50 kg of reduced radioactivity argon as target. Light signals from interactions in the argon are found by a system of 38 photo-multiplier tubes, 19 above and 19 listed below the TPC quantity inside the argon cryostat. After boosting, the PMT signals are digitized in CAEN waveform digitizers, and CAEN logic components are utilized to construct the trigger; the data acquisition system for the TPC is based upon the Fermilab artdaq software.

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Arxiv — summary generated by Brevi Assistant

We present two different evidence for the cancellation mechanism in the U symmetric pseudo-Nambu-Goldstone-Boson Dark Matter model. Hence, the DM-quark scattering generated by a mass blending in between the radial mode and the Higgs boson disappears in the limitation of zero-momentum transfer. We examine neutron star-black opening merging prospects as a test for small exotic things. The presence of fermionic dark matter requires a dark matter fragment of the GeV mass range, while the bosonic dark matter particle mass can be randomly huge or little. In current years, disparities have emerged in measurements of the present-day rate of expansion of the world H_0 and in quotes of the clustering of matter S_8. We constrict this model with the current 2018 Planck temperature level and polarization data, showing that there is no proof for α≠0 and that it can not resolve the H_0 tension listed below 3σ encountering the result acquired by examining the Planck 2015 temperature information. The observed optical shades of quasars are typically translated into a couple of frameworks: merged models which attribute color to random positioning of the accumulation disk along the line-of-sight, and transformative models which conjure up connections between quasar systems and their environments. Finally, we reveal that optically-selected quasars’ halo environments are independent of their r-W2 optical-infrared colors, while previous work has recommended that mid-infrared-selected obscured quasars inhabit even more huge halos. We propose a dual-path interferometry amplification setup in the cavity axion dark matter searches. Under modern cryogenic conditions, thermal photons in the cavity are minimal, hence the axion cavity can be considered as a quantum device giving off single-photons with temporal separations. We give a simple model of vector dark matter which can recognize the recently recommended freeze-out mechanism with militarized annihilation. In our configuration, a vector DM field X_μ and a stimulant field C_μ are combined by an SU _D gauge balance.

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DOAJ — summary generated by Brevi Assistant

Abstract in this paper, we apply an examination of the typical regulation for the dark matter density advancement as a function of redshift. A flawed dark matter density advancement regulation is taken into consideration, offered by ρ_c ∝³+ϵ ρ c ∝ 3 + ϵ, and constraints on ϵ ϵ are gotten by integrating the galaxy cluster gas mass fractions with planetary chronometer dimensions. Abstract We study scenarios where Dark Matter is a weakly connecting particle embedded in an ElectroWeak multiplet. With the raising passion for dark matter axion detection with haloscopes, in which various international teams are currently included, the RADES group was established in 2016 with the goal of developing very delicate discovery systems to be run in dipole magnets. The origin of the baryon asymmetry of the Universe and the nature of dark matter are 2 of the most tough problems in cosmology. We suggest a circumstance in which the gravitational collapse of huge inhomogeneities at the quark-hadron date generates both the baryon asymmetry and the majority of the dark matter in the form of primitive black holes. Dark matter is predicted to be the dominant mass element in galaxies. In the central region of early-type galaxies it is anticipated to make up a large amount of the complete mass, although the stellar mass must still stand for most of the mass budget plan, depending upon the stellar initial mass function. The WIMP dark matter hypothesis currently is in an awkward setting, owing to the here and now solid exclusion from DM straight detection. The idea can be recognized for ZN symmetrical models with N > 2.

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