01:57 <Curie> arXiv.org | Cavity Characterization for the Princeton Axion Search 1d ago · 3 min read The Princeton Axion Search (PXS) targets the mass window $0.8\text{--}2.1μ\text{eV}$ (corresponding to frequencies $200\text{--}500\text{MHz}$) at DFSZ sensitivity. The experiment, a haloscope, will use a cylindrical copper-plated aluminum cavity of $700~\text{mm}$ diameter and $1022~\text{mm}$ height, immersed in a $5~\text{T}$ solenoidal magnetic fiel... Read full story

01:57 <Curie> arXiv.org | Gas-phase chemistry of $\mathrm{C}_3\mathrm{H}_3^+$: a key building block for carbon mass growth in space 1d ago · 3 min read The gas-phase chemistry of $\mathrm{C}_3\mathrm{H}_3^+$ plays a central role in the growth of carbonaceous species across a wide range of environments, from combustion systems to interstellar media. However, the presence of multiple isomers, primarily the linear propargyl cation and the cyclic cyclopropenyl cation, has so far prevented the determination o... Read full story

01:57 <Curie> arXiv.org | Testing General Relativity with Binary Lens Microlensing Events 1d ago · 3 min read Einstein's General Relativity (GR), which has been precisely tested on galaxy and solar system scales, is still poorly constrained in extremely weak gravitational fields (with dimensionless Newtonian potentials of $Φ\sim 10^{-8}$). In this Letter, we propose a new method to probe such a weak-field regime of gravity and measure the spatial curvature genera... Read full story

01:57 <Curie> arXiv.org | Testing Extra-Dimensional Gravitational-Wave Polarizations with Compact-Binary Observations Hai-Tian Wang, Dicong Liang, Lijing Shao, Yu-Xiao Liu · 1d ago · 3 min read Extra spatial dimensions arise naturally in theories beyond four-dimensional general relativity (GR), but direct observational evidence remains elusive. Gravitational waves offer a distinctive probe: geometric projection onto the observable three-dimensional spatial subspace can produce apparent tensor, vector, and scalar polarizations. We consider one ad... Read full story

01:57 <Curie> arXiv.org | Nonreciprocal black holes with primary hair in beyond Horndeski gravity: Exact solutions and stability Sebastian Bahamonde, Theodoros Nakas, Simon Iteanu · 1d ago · 3 min read We develop a novel systematic method for constructing exact, static, and asymptotically flat black-hole solutions in shift-symmetric and $Z_2$-symmetric beyond Horndeski theories. In contrast to previous studies, our approach does not rely on the restrictive reciprocal condition $g_{tt}g_{rr}=-1$, allowing for more general geometries characterized by two ... Read full story

01:57 <Curie> arXiv.org | Holographic dark energy from generalized entropies and extended infrared cut-offs Ke Chen, Simone D'Onofrio, Sergei D. Odintsov, Tanmoy Paul · 1d ago · 3 min read We study holographic dark energy models constructed from generalized entropy functionals and local infrared cut-offs. Three entropies (Barrow and the three and five-parameter generalized entropies) are each combined with the Granda-Oliveros (GO) cut-off and two extensions, one adding a $γH^{-2}$ term and one a $γ\ddot{H}/H$ term, the latter raising the da... Read full story

01:57 <Curie> arXiv.org | Reference-Filter-Driven Transition Probabilities for IMM-Based Satellite Maneuver Detection Euiseok Han, Sangheon Choi, Seung-Hyun Kong · 1d ago · 3 min read Maneuver detection of non-cooperative satellites is an essential task of space situational awareness. The interacting multiple model (IMM) filter has been applied to detect unannounced maneuvers, but the standard IMM assumes a fixed Markov transition probability matrix (TPM) that must be tuned without knowledge of the maneuver rate of the target. To avoid... Read full story

01:57 <Curie> arXiv.org | Implications of tachyonic phase transition in classically scale invariant general $U(1)_{X}$ models Arindam Das, Katsuya Hashino, Yuta Orikasa, Masanori Tanaka · 1d ago · 3 min read We investigate the complementarity between collider searches and gravitational-wave (GW) observations in the classically scale-invariant general $U(1)_X$ extension of the Standard Model. The $U(1)_X$ scale is generated radiatively through the Coleman-Weinberg mechanism, while the electroweak scale is induced through the Higgs portal, without explicit mass... Read full story

01:57 <Curie> arXiv.org | Analysis of p-Wave Sommerfeld Resonance Behavior in Finite-Size Dark Matter Wu-Long Xu, Jin Min Yang, Rui Zhu · 1d ago · 3 min read Different stages of cosmic evolution impose different requirements on the dark matter annihilation cross section. Sommerfeld enhancement provides a possible way to accommodate them. However, in the point-like dark matter scenario, satisfying these requirements with either $s$-wave or $p$-wave Sommerfeld enhancement can strongly constrain the dark matter a... Read full story

01:57 <Curie> arXiv.org | Production Memory of the $^{225}\mathrm{Ra}$-$^{225}\mathrm{Ac}$ Clock in Neutron-Star Merger Ejecta Hisham Anwer · 1d ago · 2 min read Radioactive nuclei in neutron-star merger ejecta carry information about both their abundance and their production history. Using the $^{225}\mathrm{Ra}$-$^{225}\mathrm{Ac}$ sequence, we establish exact conditions linking a surviving isotope partition to the time available for parent decay. An Ac fraction of 0.1 produced solely through Ra decay requires a... Read full story

01:58 <Curie> arXiv.org | Systematic Uncertainties in Ultralight Boson Constraints from Superradiance P. S. Aswathi, Ling Sun · 1d ago · 3 min read Ultralight bosons are well-motivated candidates for physics beyond the Standard Model and may constitute part or all of the dark matter. Black-hole superradiance provides a powerful means of probing these particles through their gravitational interaction with rotating black holes. This mechanism has motivated a growing body of constraints from electromagn... Read full story

01:58 <Curie> arXiv.org | Accounting for detector calibration uncertainty in black-hole ringdown analysis 1d ago · 3 min read Detector calibration systematics can bias measurements of a remnant black hole's mass and spin, producing spurious evidence against general relativity if unaccounted for. The ringdown phase in the gravitational-wave signal produced by a binary black-hole merger encodes the remnant properties: at sufficiently late times, the signal is well described by a s... Read full story

01:58 <Curie> arXiv.org | Massive de Sitter Correlators as Finite Mellin-Barnes Integrals Amara McCune · 1d ago · 2 min read Using the Mellin-Barnes representation of de Sitter propagators, we reduce tree-level heavy-particle exchange to finite integrals that converge at physical kinematics on mass-independent contours, and one-loop diagrams to the same integrand times a flat-space momentum factor. We evaluate the triple-exchange bispectrum without analytic continuation and com... Read full story

01:58 <Curie> arXiv.org | Observational Signatures of Dyonic Black Holes in Non-Linear Electrodynamics Sobhan Kazempour, Sichun Sun, Zhiqing He, Chengye Yu · 1d ago · 3 min read We study the observational features of thin-disk accretion and emission spectra for static, spherically symmetric dyonic black holes in non-linear electrodynamics (NLED). In contrast to classical Maxwell theory, where electromagnetic duality assumes equal charges, the coupling parameters in NLED introduce a new gravitational potential and modify the geome... Read full story

01:58 <Curie> arXiv.org | Matter-Antimatter Asymmetry from Dirac-Majorana Flip-Flop 1d ago · 3 min read The observed matter-antimatter asymmetry can be generated dynamically via leptogenesis, where a non-zero lepton asymmetry is generated first and then gets converted into baryon asymmetry via sphalerons. Creation of non-zero lepton asymmetry typically requires lepton number violation (LNV) which, within the seesaw framework, results in the Majorana nature ... Read full story

01:58 <Curie> arXiv.org | Impact of site-dependent noise configurations on Einstein Telescope science at low frequency 1d ago · 3 min read We investigate how site-dependent Newtonian noise configurations affect the scientific performance of the Einstein Telescope (ET), a third-generation gravitational-wave observatory. We compare the baseline triangular and 2L detector geometries, with arm lengths of 10km and 15km, respectively, under three site-dependent noise scenarios constructed from mea... Read full story

01:58 <Curie> arXiv.org | A weakly modelled view of the joint compact-binary mass plane: population structure and spectral-siren cosmology Viola De Renzis, Alessandro Agapito, Michele Mancarella · 1d ago · 3 min read We introduce a flexible mixture model for the joint source-frame component-mass distribution of compact binaries, inferred simultaneously with cosmology, together with a framework that identifies structures in the reconstructed density, quantifying their posterior stability, local prominence, and cosmological relevance. Applied to GWTC-5.0, the workflow c... Read full story

01:58 <Curie> arXiv.org | The neutrino magnetic moment and supernovae with strong magnetic fields 1d ago · 3 min read Despite several decades of searches, the neutrino magnetic moment remains unknown. If it is large, the neutrino evolution can be affected by its coupling to strong magnetic fields like the ones present in at least some core-collapse supernovae. We explore these effects for Majorana neutrinos. We first discuss a schematic model often employed and show the ... Read full story

01:58 <Curie> arXiv.org | Disk Structure May Determine AGN Variability and Explain the Accretion Disk Size Problem: No Broad Line Region Required Amy Secunda, Yan-Fei Jiang, Jenny E. Greene · 1d ago · 3 min read Variability is a crucial probe of active galactic nuclei (AGN) disks, but the impact of the structure and internal physics of the disk on this variability is poorly understood. We perform 3D multi-frequency radiation magnetohydrodynamic simulations of the $1300-5940~\rmÅ$ emitting region of an AGN disk. This turbulent disk simulation happens to stochastic... Read full story

01:59 <Curie> arXiv.org | Discovery of Hidden Extragalactic Pulsars in the Parkes Archival Data 1d ago · 3 min read Just over 1% of the known radio pulsar population resides in the Large and Small Magellanic Clouds (MCs), the satellite galaxies that are 50-62 kpc distant from the Milky Way. These pulsars are important for constraining the peak of the pulsar luminosity function, and may give insights into neutron star populations formed from stars of different metallici... Read full story

05:20 <Curie> NASA Science | APOD: 2026 October 10 – Lunar Farside Jerry Bonnell · 1h ago · 1 min read APOD Science APOD APOD: 2026 October 10… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss APOD Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. Lunar Farside Explanation: ... Read full story

09:05 <Curie> Live Science | Does written language speed up or slow down cultural change? Ashley Hamer Pritchard · 5m ago · 4 min read The written word has been revolutionary in preserving ideas from the past, and transmitting new ones in the present. But does it favor tradition or change? Read full story

11:05 <Curie> Live Science | Photojournalist Steve Winter on his iconic Hollywood puma image, the illegal tiger trade and having a black panther knock on his door Hannah Osborne · 5m ago · 14 min read Live Science spoke with Steve Winter ahead of the release of "Big Cats" — a retrospective of his and Sharon Guynup's work traveling the world documenting some of Earth's most iconic predators. Read full story

15:27 <Curie> NASA | NASA to Conduct Flyover, Engage NFL Fans at MetLife Stadium Jessica Taveau · 1h ago · 1 min read As part of the agency’s Inspiration Tour flyover, NASA Administrator Jared Isaacman will pilot one of three F-5 fighter jets to kick off the New York Jets vs. Read full story

19:03 <Quasar> ScienceDaily | Loneliness may steal nearly 6 years of good health 4h ago · 5 min read A large study suggests loneliness and social isolation can cost people years of healthy life, especially when it comes to mental health. Men experiencing both lost about 5.8 years free from depression and anxiety, while women lost roughly 3.7 years. Read full story

19:03 <Quasar> ScienceDaily | A famous quantum effect can finally be predicted in real materials 21h ago · 8 min read Scientists have developed a powerful new way to calculate the Kondo effect, a strange quantum phenomenon that appears when magnetic atoms are embedded in metals. Instead of relying on simplified models, the method uses the real atomic and electronic structures of materials, allowing researchers to predict their behavior with far greater accuracy. Read full story

19:03 <Quasar> ScienceDaily | Hubble Space Telescope may have found a planet born after its star died 1d ago · 7 min read A strange chemical signature in old Hubble observations may point to a planet that formed after its star had already died. Astronomers found unusually high levels of niobium around the white dwarf HS 0209+0832, suggesting some of the star’s expelled material may have assembled into a new gas giant. TESS data also hints at a Jupiter-sized planet orbiting j... Read full story

19:04 <Quasar> ScienceDaily | MIT astronomers catch a star in a feast that could last billions of years 4h ago · 12 min read Astronomers have discovered a bizarre star system about 300 light-years from Earth where a small star is slowly devouring a nearby brown dwarf, an object too massive to be a planet but too small to be a true star. Unlike stars that rapidly swallow their companions, this one is gradually stealing material in a process that could continue for billions of ye... Read full story

19:04 <Quasar> ScienceDaily | Scientists may have found a shortcut to fusion energy 4h ago · 11 min read Princeton Plasma Physics Laboratory may have found a dramatically more efficient route to fusion energy by reversing the traditional approach: heating plasma first, then increasing its density. Their calculations could help future reactors reach self-sustaining fusion with far less energy while avoiding hidden problems that make ignition harder. Read full story

2026-10-10 的 #science