Article
Astronomy & Astrophysics
Gilles Couture
Summary: This research study explores the possibility of the solar wind emitting photons through bremsstrahlung when interacting with dark matter particles within the Solar System. The study calculates the bremsstrahlung spectrum and photon rates observed on Earth or at the edge of the Solar System, with potential observability in the mm range at telescopes like ALMA. This could provide valuable constraints on couplings and masses.
Article
Astronomy & Astrophysics
Csaba Csaki, Sungwoo Hong, Gowri Kurup, Seung J. Lee, Maxim Perelstein, Wei Xue
Summary: The study focuses on dark matter models based on a gapped continuum, describing a mixture of states with continuous mass distribution using effective field theory. A specific weakly interacting continuum (WIC) model is considered, which successfully reproduces observed relic density and exhibits intriguing observational consequences such as continuous and cascade decays of dark matter states.
Article
Astronomy & Astrophysics
Haipeng An, Haoming Nie, Maxim Pospelov, Josef Pradler, Adam Ritz
Summary: By numerically simulating the interaction of dark matter with solar interior electrons, the energy spectrum of the reflected flux can be determined, and the expected rates for direct detection experiments can be calculated. Large Xenon-based experiments offer the strongest direct limits for dark matter masses below a few MeV, with a sensitivity to the effective dark matter charge of approximately 10-9e.
Article
Astronomy & Astrophysics
Edward Belbruno, James Green
Summary: The gravitational force caused by the estimated virial mass of the Milky Way galaxy, which consists mainly of dark matter, has been analyzed using two analytical models. The force's impact on spacecraft trajectories at a sufficient distance from the Sun has been estimated and the difficulty of detecting this force has been studied. Its implications for spacecraft missions, planetary astronomy, and astrophysics are discussed.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Debajit Bose, Tarak Nath Maity, Tirtha Sankar Ray
Summary: By measuring the solar gamma ray flux, we have set stronger limits on the scattering cross section between dark matter and electrons, with these limits ranging from GeV to PeV scale for dark matter masses, which are four to six orders of magnitude stronger than existing limits.
Article
Physics, Particles & Fields
Swagat S. Mishra, Varun Sahni
Summary: Non-canonical scalar fields with specific Lagrangian properties have the capability to exhibit dark matter-like behavior on small scales. By manipulating the potential term, the kinetic term can be utilized as dark matter while the potential term plays the role of dark energy later on. Simple potentials like V = V-0 coth(2) phi and Starobinsky-type potentials can unify dark matter and dark energy, and cascading dark energy models are also effective in this unification.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Astronomy & Astrophysics
M. Khelashvili, A. Rudakovskyi, S. Hossenfelder
Summary: The kinematics of galaxies can provide valuable insights into the distribution of dark matter. This study uses a Bayesian framework to analyze the stellar kinematics of galaxies and compares different dark matter halo models. The results indicate a preference for fuzzy dark matter models in more than half of the galaxies, but it is also found that there is no universal particle mass value that fits all galaxies well.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Xiao-Min Zhang, Kai Li, Yi-Fu Guo, Peng-Cheng Chu, He Liu, Jian-Yang Zhu
Summary: Two models proposed in this study unify warm inflation with dark matter and dark energy. A single scalar field is responsible for early Universe expansion through dissipative warm inflation and later acts as both dark matter and dark energy. Evolution equations for the fields and observational constraints are presented, along with an evolution law describing the scaling of energy density and state parameter with scale factor.
Article
Physics, Multidisciplinary
H. B. Tran Tan, A. Derevianko, V. A. Dzuba, V. V. Flambaum
Summary: This study calculates the cross sections of atomic ionization by absorption of scalar particles in a certain energy range, providing numerical results for relevant atoms and identifying a crucial flaw in previous calculations. It interprets data from the Xenon1T experiment, establishes direct bounds on the coupling of scalars to electrons, and updates axio-ionization cross sections.
PHYSICAL REVIEW LETTERS
(2021)
Article
Astronomy & Astrophysics
Stephanie O'Neil, Mark Vogelsberger, Saniya Heeba, Katelin Schutz, Jonah C. Rose, Paul Torrey, Josh Borrow, Ryan Low, Rakshak Adhikari, Mikhail Medvedev, Tracy R. Slatyer, Jesus Zavala
Summary: Self-interacting dark matter (SIDM) can alleviate discrepancies between simulated cold dark matter (CDM) and observed galactic properties. We propose a physically motivated SIDM model with a nearly degenerate excited state that allows for both elastic and inelastic scattering. Our simulations show that up-scattering reactions increase the central densities of the main halo, but coring still occurs due to elastic and down-scattering effects.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Andrea Maccio, Daniel Huterer Prats, Keri L. Dixon, Tobias Buck, Stefan Waterval, Nikhil Arora, Stephane Courteau, Xi Kang
Summary: Through simulations, it has been shown that dwarf galaxies can lose up to 80% of their dark matter content and see a significant change in the dark matter-to-stellar mass ratio after interactions with central galaxies. These findings align with observations of NGC 1052-DF2 and NGC 1054-DF4.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Ilidio Lopes
Summary: Our study investigates the complex interaction between active neutrinos and the ultralight bosonic dark matter halo surrounding the Sun, and reveals that novel models do not surpass the performance of the conventional neutrino flavour oscillation model based on available solar neutrino flux data. Next-generation solar neutrino detectors have the potential to provide evidence for the existence or absence of the ultralight-dark matter halo.
Article
Astronomy & Astrophysics
Sebastian Sassi, Abolfazl Dinmohammadi, Matti Heikinheimo, Nader Mirabolfathi, Kai Nordlund, Hossein Safari, Kimmo Tuominen
Summary: The diurnal modulation of event rate on solid targets due to directionally dependent defect creation threshold energy can enhance the detection sensitivity for dark matter signals. Using information from both annual and diurnal modulations may provide a similar gain in experiment reach, especially for light dark matter just above the detection threshold.
Article
Astronomy & Astrophysics
Timon Emken
Summary: The paper presents a comprehensive study of solar reflection through electron and/or nuclear scatterings using Monte Carlo simulations of dark matter trajectories through the Sun. The study explores the properties of boosted dark matter particles, exclusion limits based on various experiments, and projections for future detectors. Additionally, a novel annual modulation signature of a potential solar reflection signal is identified and quantified, which depends critically on the anisotropies of the boosted dark matter flux ejected from the Sun.
Article
Engineering, Mechanical
Xiaolin Ye, Xingyuan Wang
Summary: In this paper, a novel 3D chaotic system with an exponential function is proposed, which can generate an attractive sea. The proposed system is relatively rare compared to other 3D chaotic systems and has a non-equilibrium point. The feasibility of the system for industrial applications is shown through DSP implementation.
NONLINEAR DYNAMICS
(2023)
Article
Physics, Multidisciplinary
O. V. Zhirov, D. L. Shepelyansky
ANNALEN DER PHYSIK
(2015)
Article
Astronomy & Astrophysics
G. Rollin, J. Lages, D. L. Shepelyansky
ASTRONOMY & ASTROPHYSICS
(2015)
Article
Physics, Multidisciplinary
L. Ermann, E. Vergini, D. L. Shepelyansky
Article
Physics, Condensed Matter
Klaus M. Frahm, Dima L. Shepelyansky
EUROPEAN PHYSICAL JOURNAL B
(2016)
Article
Physics, Condensed Matter
Jose Lages, Antoine Patt, Dima L. Shepelyansky
EUROPEAN PHYSICAL JOURNAL B
(2016)
Article
Physics, Condensed Matter
Klaus M. Frahm, Katia Jaffres-Runser, Dima L. Shepelyansky
EUROPEAN PHYSICAL JOURNAL B
(2016)
Article
Physics, Nuclear
I. B. Khriplovich
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
(2016)
Article
Astronomy & Astrophysics
G. Rollin, J. Lages, D. L. Shepelyansky
Article
Physics, Multidisciplinary
I. B. Khriplovich
EUROPEAN PHYSICAL JOURNAL PLUS
(2017)
Article
Chemistry, Multidisciplinary
Oleg Zhirov, Jose Lages, Dima L. Shepelyansky
APPLIED SCIENCES-BASEL
(2020)
Article
Physics, Multidisciplinary
Celestin Coquide, Jose Lages, Dima L. Shepelyansky
Article
Biochemistry & Molecular Biology
Ekaterina Kotelnikova, Klaus M. Frahm, Dima L. Shepelyansky, Oksana Kunduzova
Summary: In this study, the MetaCore network and Google matrix algorithms were used to predict protein-protein interactions influencing cardiac fibrosis. The developed algorithms allowed for the identification of key protein interactions and prediction of new regulators linked to fibroblast activation. These findings are important for the discovery of new therapeutic targets to limit myocardial fibrosis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Physics, Multidisciplinary
Celestin Coquide, Jose Lages, Leonardo Ermann, Dima L. Shepelyansky
Summary: This study analyzes the impact of the COVID-19 pandemic on international trade and finds that it has caused significant restructuring of trade flows and balances.
Article
Optics
Leonardo Ermann, Eduardo Vergini, Dima L. Shepelyansky
Article
Physics, Fluids & Plasmas
Peter Schlagheck, Dima L. Shepelyansky
