04:42 <Curie> arXiv.org | Convergence of Roberts flow dynamos in Eulerian and Lagrangian codes Nikyta Shchutskyi, Axel Brandenburg, Matthieu Schaller · 1d ago · 3 min read Standard benchmark tests for numerical magnetohydrodynamics codes focus on one- and two-dimensional problems that ignore the possibility of dynamos, i.e., an exponential instability converting kinetic energy into magnetic energy. They also tend to ignore magnetic helicity conservation that can have dramatic effects in periodic domains. The existence of ma... Read full story

04:42 <Curie> arXiv.org | Kilopixel Performance of the Kinetic Inductance Detectors for the Terahertz Intensity Mapper 4h ago · 3 min read We characterize a flight-grade array of lumped-element kinetic inductance detectors (LEKIDs) developed for the long-wavelength module of the Terahertz Intensity Mapper (TIM). From an 864-pixel science array, we select 490 well-isolated resonators spanning the focal plane and readout band and measure their thermal response, optical responsivity, and noise ... Read full story

04:42 <Curie> arXiv.org | Heavy Higgsino Dark Matter With Low Reheating in View of the LZ High-Recoil Event C. Pallis · 4h ago · 3 min read We show that a heavy higgsino $\tilde h$ with mass $m_{\tilde h}\sim0.1~{\rm PeV}$, which can be made consistent with the recent LUX-ZEPLIN event avoiding constraints from direct and indirect detection, can account for the present cold dark matter abundance of the universe, if the reheating temperature is bounded as $T_{\rm rh}\lesssim 595~{\rm GeV}$. The... Read full story

04:42 <Curie> arXiv.org | Stochastic gravitational-wave background from self-interacting superradiant clouds Yin-Da Guo, Richard Brito, Chen Yuan · 4h ago · 3 min read Gravitational-wave (GW) observations offer a powerful probe of new fundamental fields. One well-motivated source is black hole (BH)--boson cloud systems, in which an ultralight scalar field forms a cloud around a rotating BH via superradiance and emits long-lived nearly monochromatic GWs. In this work, we compute the stochastic GW background (SGWB) from s... Read full story

04:42 <Curie> arXiv.org | Inflation with vector fields revisited: non-Gaussianities Chong-Bin Chen · 4h ago · 3 min read {We revisit the resulting bispectrum of inflation with kinetic-coupled vector fields by organizing the dynamics in terms of $h$, which measures the vector kinetic contribution relative to that of the scalar field. We derive a low-energy effective field theory (EFT) and evaluate the bispectrum of the curvature perturbation for the large-$h$ regime. For $h\... Read full story

04:42 <Curie> arXiv.org | Neutron Star Bounds on Muonic Fifth Forces from Picometer to Meter Scales 4h ago · 3 min read Testing muonic fifth forces is difficult because muons are scarce in ordinary matter. However, they are abundant in neutron stars. We show that this population responds coherently to electromagnetic fluctuations induced by proton and electron collisions, emitting the fifth-force mediator and cooling the star. This energy loss constrains $g_{Xμ}\lesssim 10... Read full story

04:42 <Curie> arXiv.org | Production of Leptophilic Bosons in Ultradegenerate Relativistic Matter 4h ago · 3 min read Neutron stars (NSs) are powerful factories for new particles with masses up to the 100~keV range. These compact stars contain significant amounts of protons, electrons, and muons. We deduce the emission rates for new scalar, vector, and pseudoscalar bosons coupling to electrons and muons. For muonic vector bosons, in addition to direct emission from lepto... Read full story

04:42 <Curie> arXiv.org | Matter Flavor Conversion Mediated by Pseudo-Sterile States as the Possible Origin of Neutrino Oscillation Anomalies Sabya Sachi Chatterjee, Antonio Palazzo · 4h ago · 4 min read Neutrino oscillation experiments present anomalous results across a vast range of baselines and energies. Here we show that a 3+1 scenario in which sterile neutrinos feel a novel matter potential $V_s$ proportional to background density of ordinary or (asymmetric) dark matter is able to explain several anomalies. At low-energies ($E\lesssim$ 1 TeV) the mo... Read full story

04:43 <Curie> arXiv.org | Exploring neutrino loss with diffuse astrophysical neutrino fluxes 4h ago · 3 min read We study the sensitivity of the diffuse high-energy neutrino flux observed in IceCube to new-physics effects resulting in an exponential flux attenuation along the trajectory, such as invisible neutrino decay or new interactions with the background encountered during propagation. We argue that, even though the sources and production redshifts of these ast... Read full story

04:43 <Curie> arXiv.org | Reviving primordial black hole formation in slow first-order phase transitions Wen-Yuan Ai, Ke-Pan Xie · 4h ago · 3 min read Large curvature perturbations generated during slow first-order phase transitions are a promising source of primordial black holes. However, recent analyses suggested that the mechanism is ruled out once the density contrast and the formation threshold are evaluated in the same gauge. In this work, we show that this mechanism remains viable: after a super... Read full story

05:38 <Curie> NASA Science | Floodwaters Overwhelm Thailand Lauren Dauphin · 1h ago · 3 min read Heavy rains since mid-September have caused widespread flooding that has affected millions of people across the country. Read full story

05:38 <Curie> NASA Science | APOD: 2026 October 9 – Stickney Crater Jerry Bonnell · 1h ago · 1 min read APOD Science APOD APOD: 2026 October 9… 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. Stickney Crater Explanation:... Read full story

09:42 <Curie> Live Science | South Korean 'robot dog' became first to run a marathon on a single battery charge — now we know how Alan Bradley · 42m ago · 4 min read A quadruped robot scampered more than 26.2 miles of uneven, hilly terrain alongside human runners without needing to be recharged. Read full story

10:59 <Curie> Live Science | Bronze ring with Lighthouse of Alexandria engraving discovered at palace on submerged island in Egypt Owen Jarus · 59m ago · 4 min read A bronze ring that depicts the Lighthouse of Alexandria has been discovered underwater in the remains of an ancient palace. Read full story

12:24 <Quasar> ScienceDaily | A quantum prediction from 1931 just came to life 7h ago · 6 min read Nearly a century after physicist Hans Bethe predicted them, scientists have created and directly observed unusual quantum states known as “Bethe strings” in an ultracold gas. By cooling cesium atoms to near absolute zero and trapping them in thousands of tiny one-dimensional tubes, researchers were able to make groups of atoms bind together without ordina... Read full story

12:24 <Quasar> ScienceDaily | Bacteria turn a virus’ own weapon against it 6h ago · 6 min read Researchers have uncovered a new way bacteria detect viral attacks: a virus-produced enzyme cuts a bacterial sensor protein, triggering a self-destructing immune response. The discovery could lead to more effective phage therapies against antibiotic-resistant bacteria and provide insight into ancient immune mechanisms shared with humans. Read full story

12:24 <Quasar> ScienceDaily | A 9-billion-year-old signal could help explain dark energy 7h ago · 8 min read A Canadian radio telescope has detected the faint glow of hydrogen from billions of years ago using only its own observations, proving a long-awaited way to map the distant universe can actually work. CHIME can use this hydrogen signal to trace how matter is spread across space and measure how the universe has expanded over time, offering a powerful new w... Read full story

12:24 <Quasar> ScienceDaily | Scientists find hidden materials that could improve batteries and solar fuels 6h ago · 6 min read Scientists have uncovered a hidden world of “in-between” materials that briefly form as chemical ingredients are heated, revealing structures that conventional methods can miss. Among the discoveries is a previously unknown form of bismuth vanadate, a material widely studied for using sunlight to help produce clean hydrogen. The new version has a differen... Read full story

12:24 <Quasar> ScienceDaily | October’s night sky is full of cosmic tricks and treats 13h ago · 7 min read October’s skies are packed with celestial surprises, from Jupiter disappearing behind the Moon to two meteor showers lighting up the darkness. NASA highlights four must-see events, including shooting stars from Halley’s Comet and a glowing Hunter’s Moon just before Halloween. Read full story

12:25 <Quasar> ScienceDaily | NASA astronauts splash down after 100 million miles in space 12h ago · 6 min read NASA’s SpaceX Crew-12 astronauts have returned to Earth after 237 days in space, traveling more than 100 million miles and completing over 3,792 orbits while conducting research to prepare for future missions to the Moon and Mars. The mission also made history with record-setting spacewalk achievements and experiments that could transform medicine both in... Read full story

14:52 <Quasar> Quanta Magazine | How Does Life Unfold? A Landscape Metaphor Comes Into Its Own. Philip Ball · 49m ago · 18 min read C.H. Waddington’s powerful image of embryonic stem cells specializing on a rolling landscape has captivated biologists since the 1950s. Experimental data is finally confirming, and complicating, his visionary ideas. Read full story

14:53 <Curie> NASA | Cosmic House of Mirrors HQ Web Team · 55m ago · 5 min read Galaxies warp and multiply as if in a house of mirrors in this image from NASA's James Webb Space Telescope released on Sept. 29, 2026. Read full story

15:55 <Curie> Live Science | Cool chemistry trick allows new tattoos to 'turn on and off' Kenna Hughes-Castleberry · 55m ago · 5 min read Researchers created multicolored tattoo inks that are activated by different wavelengths of light, allowing people to hide their tattoos in different scenarios. Read full story

15:55 <Curie> Live Science | Scientists have identified a 'protein signature' in blood that could predict healthy aging Zunnash Khan · 55m ago · 5 min read Having a certain ratio of proteins produced by immune cells in your blood is linked to a higher risk of age-related diseases, scientists report. Read full story

16:57 <Curie> Live Science | Self-driving, solar-powered cars that talk to each other? What vehicles might look like in 10 years. Skyler Ware · 57m ago · 17 min read Car technology is making rapid advances, and the car you will drive in 10 years may be very different from the one you're driving today. Read full story

18:18 <Curie> NASA | NASA Demonstrates Next-Generation Heat Shield Technologies Tara Friesen · 1h ago · 4 min read NASA is testing heat shields that can keep astronauts safe as they return from missions to the Moon and Mars in an unusual way: by taking out the trash. Read full story

20:14 <Curie> NASA | NASA Seeks US Industry Plans for Commercial Space Stations Jessica Taveau · 2h ago · 2 min read NASA is advancing American leadership in space by taking the next step toward a future where commercial space stations lead the way in low Earth orbit. On Read full story

20:14 <Curie> Live Science | 'October is the ideal time to get vaccinated': Flu season is kicking off early, experts say Olivia Maule · 1h ago · 6 min read Flu tests are coming back positive at higher rates than is typical for early fall in several Western states, data suggests. Read full story

23:04 <Curie> arXiv.org | Probing soft signals of gravitational-wave memory with space-based interferometers Yan Cao, Yong-Liang Ma, Yong Tang · 23h ago · 3 min read Gravitational-wave displacement memory is a remarkable, ubiquitous prediction of general relativity that has not yet been detected. Unlike the oscillatory components of gravitational waveforms, displacement memory is associated with soft gravitons and provides the leading low-frequency observable of its parent event. Analogous soft signals may also be ass... Read full story

23:04 <Curie> arXiv.org | Optimized numerical evolution of perturbations across sharp background trajectory turns in multifield inflation 23h ago · 3 min read Features in the primordial power spectrum require numerical methods that are both accurate and scalable across the wide class of multifield inflationary models that produce them. Sharp turns in the background trajectories, induced by either potential or geometric effects, render these computations particularly challenging. In this work, we introduce an ef... Read full story

23:04 <Curie> arXiv.org | Effect of ultralight dark matter on compact binary mergers 23h ago · 3 min read The growing catalogue of gravitational wave events enables a statistical analysis of compact binary mergers, typically quantified by the binary merger rate density. This quantity can be influenced by ambient factors, following which, in this work we have investigated the impact of dark matter environment on the merger statistics. We construct a baseline a... Read full story

23:04 <Curie> arXiv.org | Widespread steep X-ray spectra of luminous $z\simeq5.85-7.5$ quasars and their implications for future X-ray surveys 23h ago · 4 min read Luminous quasars (QSOs) at the Epoch of Reionization (EoR, $z\gtrsim6$) host billion-solar-mass black holes assembled within the first Gyr of cosmic time. Their X-ray emission probes the innermost accreting regions and constrains the physical state of the corona during early supermassive black hole (SMBH) growth. Previous results from the HYPerluminous qu... Read full story

23:04 <Curie> arXiv.org | Two Low-Mass-Ratio Microlensing Planets from High-Magnification Events: KMT-2021-BLG-0247 and MOA-2023-BLG-169 23h ago · 4 min read We present an analysis of two planetary microlensing events, KMT-2021-BLG-0247 and MOA-2023-BLG-169, both of which exhibit high magnifications and low planet--host mass ratios, but with markedly different levels of parameter constraint. For KMT-2021-BLG-0247, the finite-source effect and microlens parallax are both clearly detected, leading to unusually t... Read full story

23:04 <Curie> arXiv.org | PEARLS: NuSTAR and XMM-Newton Extragalactic Survey of the JWST North Ecliptic Pole Time-Domain Field V: Unraveling X-ray Spectral Variability 23h ago · 4 min read As one of the first deep time-domain surveys in the hard X-ray band, the NuSTAR campaign in the JWST North Ecliptic Pole Time Domain Field (NEP-TDF) offers a prime opportunity to measure variability in a faint population of Active Galactic Nuclei (AGN) in the medium-to-high redshift universe. In the X-ray band, AGN variability is generally caused by chang... Read full story

23:04 <Curie> arXiv.org | Mitigating prior-volume effects in galaxy clustering by adopting Mpc over Mpc/h units 23h ago · 3 min read We investigate prior-volume effects in Bayesian analyses of galaxy clustering based on state-of-the-art models, such as the EFT and the VDG$_\infty$ model. We show that these effects are largely driven by imposing priors on the model parameters defined in ${\rm Mpc}/h$ units, thereby introducing a spurious correlation with the Hubble parameter $h$, and th... Read full story

23:04 <Curie> arXiv.org | High-Angular-Resolution Survey of Stars within 18 pc of the Sun: Part I 23h ago · 3 min read We present the rationale, design, methodology, and observational facilities of a high-angular-resolution imaging survey of stars within 18~pc of the Sun. Our comprehensive sample consists of 2047 stars compiled from Gaia eDR3 and complementary catalogs. The main goal is to observe as many stars from this sample as possible using high-angular-resolution te... Read full story

23:05 <Curie> arXiv.org | Relaxation of a Vlasov gas to an inhomogeneous state due to phase space mixing in an axisymmetric potential: A Newtonian analogy of the Kerr orbital motion 23h ago · 3 min read We explore the dynamics of a Vlasov gas propagating in an external axisymmetric potential consisting of a central potential with an additional quadrupolar component which gives rise to two potential wells along the symmetry axis. Employing independently $N$-particle simulations and statistical methods, we show that an initially homogeneous and isotropic c... Read full story

23:05 <Curie> arXiv.org | Discovery of thermal radio recombination line emission toward the high-mass protostar IRAS18162$-$2048 23h ago · 3 min read The physical conditions within the innermost few tens of au of high-mass protostars ($M_*>8~M_\odot$) remain largely unexplored. At these scales, ionised emission may trace photoionised gas, accretion disks, or the base of protostellar jets. We search for ionised emission in the form of radio recombination lines (RRLs) in high-mass star-forming regions. W... Read full story

23:05 <Curie> arXiv.org | N/O-enhanced chemical enrichment by massive stars: the interplay of optically-thick winds and rotation Boyuan Liu, Michela Mapelli, Lumen Boco, Xihan Ji · 15d ago · 3 min read Recent JWST observations have revealed a sample of high-$z$ galaxies with highly-enhanced N/O abundance ratios, $\log\rm (N/O)\gtrsim -1.1$. Strong optically-thick winds of rotating massive stars going through the Wolf-Rayet (WR) phase provide a viable explanation for such N/O enhancements, supported by the direct spectroscopic WR signatures discovered in... Read full story

23:05 <Curie> arXiv.org | Gravitational-Susceptibility Dip Behind DESI's results: Addressing the Phantom Crossing by Local limit of Nonlocal Gravity 23h ago · 3 min read The second data release of the Dark Energy Spectroscopic Instrument (DESI), based on more than fourteen million galaxies and quasars, prefers a dark energy component whose equation of state is dynamical. In the simplest two-parameter description of this behavior, the Chevallier--Polarski--Linder (CPL) parametrization, the data favor the quadrant $w_0>-1$,... Read full story

23:05 <Curie> arXiv.org | Why most neutron star low-mass X-ray binaries accrete transiently: an evolutionary study of transient and persistent phases 23h ago · 3 min read A neutron star (NS) low-mass X-ray binary (LMXB), in which an NS accretes matter from a low-mass donor star, is an ideal source for probing some fundamental aspects of physics and astronomy, such as strong gravity, superdense matter, and the accretion-ejection processes. However, to reliably achieve these goals, one must adequately understand NS LMXBs, in... Read full story

23:05 <Curie> arXiv.org | Characterizing the hierarchical structure of filaments I. On the origin of the length-mass (L-M) scaling relation Rahul Patel, Daniel Seifried, Alvaro Hacar · 23h ago · 3 min read Aims. Filamentary structures in molecular clouds are widely recognized as fundamental components of star formation. Observations report a length-mass relation of the form $L \propto M^α$ with $α\simeq 0.5$. We characterize this relation in simulated molecular clouds and investigate the influence of hierarchical fragmentation and spatial resolution. Method... Read full story

23:06 <Curie> arXiv.org | Examining Temporal Characteristics of GCRs in the AMS-02 era 23h ago · 3 min read The energy spectra of Galactic cosmic rays (GCRs) serve as critical probes of their astrophysical origins and propagation mechanisms through the interstellar medium. Among the key physical processes shaping the observed spectra, solar modulation, driven by turbulent heliospheric magnetic fields and the variability of the solar wind, plays a dominant role ... Read full story

23:06 <Curie> arXiv.org | Multi-Height Spectropolarimetric Signatures of Magnetoacoustic Waves in Solar Plage 23h ago · 3 min read We analyze high-cadence spectropolarimetric observations of solar plage obtained with the Visible Spectro-Polarimeter (ViSP) on the Daniel K. Inouye Solar Telescope (DKIST) to investigate low-chromospheric waves sampled by the Na I D1 5896 Angstrom and Ca II 8542 Angstrom lines. Observations were taken at an oblique viewing angle, providing sensitivity to... Read full story

23:06 <Curie> arXiv.org | Collisionless Shock Driven by a Supersonic Velocity Shear Kazuki Kamiido, Yutaka Ohira · 23h ago · 2 min read The long-term evolution of a relativistic collisionless velocity shear in an unmagnetized electron-positron plasma is investigated using a first-principle particle-in-cell simulation. The Alves instability converts the shear kinetic energy into thermal and magnetic field energy. The resulting pressures push the plasma, leading to the formation of collisio... Read full story

23:06 <Curie> arXiv.org | Spectroscopic follow-up of compact object binary candidates from Gaia DR3: White dwarfs, neutron stars, black holes, and the parallax zeropoint 23h ago · 4 min read Astrometry and radial velocities (RVs) from Gaia DR3 yielded orbits for hundreds of thousands of binary systems, including several samples proposed to contain black holes (BHs), neutron stars (NSs), and white dwarfs (WDs). We present results of a systematic spectroscopic follow-up program targeting these objects. Beginning with a sample of 227 sources, we... Read full story

23:06 <Curie> arXiv.org | Cosmological constraining power of the redshifts, heights, and angular clustering of weak gravitational lensing peaks 23h ago · 3 min read Weak gravitational lensing (WL) peaks probe non-Gaussian information of the large-scale distribution of matter that is not captured by two-point lensing statistics. We study the cosmological potential of the height distribution, redshift distribution, and angular clustering of high-valued WL peaks using a Bayesian inference approach that mimics a $\textit... Read full story

23:06 <Curie> arXiv.org | Will a Supernova explode in CD-30°11223? L. Piersanti, L. R. Yungelson, E. Bravo, I. Dominguez · 23h ago · 4 min read Accretion of He-rich matter onto a low-mass CO WD from a He-rich donor may lead to an explosive event of SN Ia proportion, though with low peak luminosity and peculiar nucleosynthesis. Recently such a possibility for some binaries with He-accreting WDs has been questioned, suggesting that, if the effects of rotation are accounted for in the evolution of t... Read full story

23:10 <Curie> arXiv.org | Long-Baseline VLF Observations of Solar Flares from Antarctica 23h ago · 3 min read We present long-baseline Very Low Frequency (VLF) observations of solar flare-induced ionospheric disturbances obtained at the Bulgarian Polar Astronomical Observatory (St. Kliment Ohridski Base) on Livingston island, Antarctica. Using continuous VLF transmissions at 21.4 kHz (NPM, Hawaii) and 24.0 kHz (NAA, Maine), propagating over trans-hemispheric path... Read full story

23:10 <Curie> arXiv.org | The age of the Universe from a large sample of the oldest Galactic stars 23h ago · 3 min read We estimate the age of the Universe using the Xiang & Rix sample of 247,103 Milky Way stars with low-resolution spectroscopy from LAMOST DR7 and $Gaia$ eDR3 parallaxes. Stellar ages were estimated using YY isochrones up to 20 Gyr. We require consistency between YY ages and photometric FLAME ages based only on $Gaia$ data. To remove a population of stars w... Read full story

23:10 <Curie> arXiv.org | Phase-space averaging for stellar convection II. Maximum-entropy closures for mixed radiative-convective envelopes P. S. Houdayer, M. Rieutord · 23h ago · 3 min read Surface convection in cool stars sets the entropy jump between the atmosphere and the deep convective envelope, and therefore affects the radius and structure of one-dimensional stellar models. In standard local treatments, this entropy jump is controlled through an effective convective efficiency. We develop a phase-space closure that relates the mean st... Read full story

23:10 <Curie> arXiv.org | From protogalaxy through thick and thin: Why did the Milky Way evolve in three kinematic phases? 23h ago · 4 min read APOGEE and Gaia data suggest the Milky Way's kinematic structure evolved through three distinct phases: a disordered protogalaxy, which ``spun up'' into a thick stellar disk, and then ``cooled down'' to a final cold, thin stellar disk. We use a suite of FIRE-2 cosmological zoom-in simulations of Milky Way-mass galaxies to demonstrate that the same three p... Read full story

23:10 <Curie> arXiv.org | Shape of the direct-method mass-metallicity relation with JWST: Fast-Track Nitrogen and Helium Enrichment A. Gim\'enez-Alc\'azar, R. Amor\'in, J. M. Vilchez · 23h ago · 3 min read We investigate the mass-metallicity relation (MZR) from z=1 to z=9 using electron-temperature-based gas-phase metallicities and examine how auroral-line selection, star-formation history, and secondary abundances affect its interpretation in the early Universe. We compile a homogeneous sample of 286 star-forming galaxies observed with JWST/NIRSpec medium ... Read full story

23:10 <Curie> arXiv.org | Point-like Off-pulse GeV Emission from the Millisecond Pulsar PSR J0437-4715 Ziwei Ou · 23h ago · 3 min read PSR J0437-4715 is a gamma-ray millisecond pulsar, which has been detected by Fermi-LAT. For understanding the nature, we analyze the GeV gamma-ray data obtained with Fermi-LAT around the pulsar region. Based on the pulsar timing ephemeris, we derived the gamma-ray pulse profile and defined on-pulse and off-pulse phase intervals. A binned likelihood analys... Read full story

23:10 <Curie> arXiv.org | Learning to See Sharper: A Physics-Informed Artificial Intelligence Framework for Super-Resolving Galaxy Spectra 23h ago · 3 min read The information recoverable from galaxy spectra depends fundamentally on spectral resolution, yet assembling large samples at high resolution remains observationally expensive. We present a deep-learning framework for spectral super-resolution that enhances low-resolution galaxy spectra by a factor of $\sim$10 in resolving power ($R\sim100$ to $R\sim1000$... Read full story

23:10 <Curie> arXiv.org | Velocity dispersion of Solar Energetic Particles in turbulent heliosphere 23h ago · 3 min read Solar Energetic Particles (SEPs) are a signature of solar eruptions, and to link them to acceleration mechanisms many studies investigate their injection time at the Sun, $t_{sun}$. We assess velocity dispersion analysis (VDA), an often-used method to derive $t_{sun}$. We use full-orbit simulations of 1--100 MeV SEP protons in a novel model of the interpl... Read full story

23:10 <Curie> arXiv.org | Superposition model for energy reconstruction and mass identification in cosmic ray spectra Hu Liu, Fanping Li, J. Zhao, L. Y. Wang, Zhe Li, S. Z. Chen · 23h ago · 3 min read The "knee" of cosmic ray spectra may reflect the maximum energy accelerated by galactic cosmic ray sources or the limit of the galaxy's ability to bind cosmic rays. Measurements of individual energy spectra are a crucial tool to understand the origin of the knee. Energy reconstruction and composition identification are foundations of the individual energy... Read full story

23:10 <Curie> arXiv.org | Collisionless Accretion of Finite-Angular-Momentum Plasma onto a Spinning Black Hole 23h ago · 3 min read In low-luminosity active galactic nuclei like M87* and Sgr A*, the accretion disk around the central supermassive black hole is tenuous and collisionless. As a result, the usual ideal magnetohydrodynamics (MHD) approximation may not be applicable. In this Letter, we report on the first fully kinetic simulations of the accretion process where the plasma in... Read full story

23:12 <Curie> arXiv.org | High-resolution Very Large Array Radio Observations of the Boomerang Pulsar Wind Nebula Paul C. W. Lai, Chi-Yung Ng, Shumeng Zhang · 23h ago · 3 min read We present a radio polarimetric study of the Boomerang pulsar wind nebula G106.65+2.96 with Very Large Array (VLA) observations at the 6 GHz band. Our high-resolution image discovers new small-scale features in the nebula, including an elliptical core of $40''\times20''$ surrounding the central pulsar and a $2'$-long arc wrapping around the core in the no... Read full story

23:12 <Curie> arXiv.org | Stable mass transfer in massive binaries leading to merging black holes 23h ago · 3 min read The vast majority of massive binary systems in the universe is evidently unsuited to produce merging binary black holes. However, several narrow evolutionary paths of isolated massive binaries towards this goal have recently been identified. Due to the high degree of simplification and assumptions applied in previous modelling of these paths, conclusions ... Read full story

23:12 <Curie> arXiv.org | New Signs Pointing Toward a Correlation Between Astrophysical Neutrinos and Radio Flares 23h ago · 3 min read We use data from the first two epochs of the Very Large Array Sky Survey (VLASS) and the IceCube Neutrino Observatory to search for evidence of a correlation between radio variability and the detection of astrophysical neutrinos. Our work probes the radio population down to $S_{3\,\text{GHz}}\gtrsim$ a few mJy, more than an order of magnitude fainter than... Read full story

23:12 <Curie> arXiv.org | Rapid bulge assembly in young galaxy disks at Cosmic Dawn Anshuman Borgohain, Kanak Saha · 23h ago · 3 min read Recent observations with the James Webb Space Telescope (JWST) have begun to reveal a surprising morphological diversity in galaxies within the first billion years after the Big Bang, including indications of structural maturity previously thought to arise much later. These findings raise fundamental questions about when and how well-known structural comp... Read full story

23:12 <Curie> arXiv.org | DESI results and Dark Energy from QCD topological sectors Ludovic Van Waerbeke, Ariel Zhitnitsky · 23h ago · 3 min read We present a physically motivated model of dark energy (DE) rooted in the topological structure of the Quantum Chromodynamics (QCD) vacuum. In this framework, DE arises from the difference between the QCD vacuum energy in an expanding Universe and in Minkowski spacetime, with the relevant contribution generated by tunnelling between distinct topological s... Read full story

23:12 <Curie> arXiv.org | Revising the Spin and Kick Connection in Isolated Binary Black Holes Vishal Baibhav, Vicky Kalogera · 23h ago · 3 min read The origin of black hole (BH) spins remains one of the least understood aspects of BHs. Despite many uncertainties, it is commonly assumed that if BHs originated from isolated massive star binaries, their spins should be aligned with the orbital angular momentum of the binary system. This assumption stems from the notion that BHs inherit their spins from ... Read full story

23:12 <Curie> arXiv.org | A scalar-extended ${\rm U(1)_{L_μ-L_τ}}$ explanation of the LUX-ZEPLIN 248 keV excess Dipankar Pradhan, Abhik Sarkar · 23h ago · 3 min read The recently observed dark matter (DM) nuclear recoil event at an energy of $248 \pm 23\,(\text{stat.}) \pm 23\,(\text{syst.})\,\text{keV}$ at the LUX-ZEPLIN (LZ) experiment, favoring an inelastic scattering interpretation, has motivated various beyond the Standard Model (BSM) scenarios aimed at explaining the observed excess. In particular, this provides... Read full story

23:12 <Curie> arXiv.org | Listening to the Horizon: Probing Near-Horizon Reflectivity with GW250114 R. Prasad, Subhodeep Sarkar, Sudipta Sarkar · 23h ago · 3 min read Testing the horizon properties of astrophysical black holes is a central goal of gravitational-wave astronomy. The recently identified Direct Wave (DW), a prompt non-quasinormal component of GW250114, provides a new probe of near-horizon physics. While it remains unclear whether the DW itself carries horizon information, we show that it enables a novel nu... Read full story

23:12 <Curie> arXiv.org | A Pairwise Surrogate for Gravitational-Wave Spectra from Highly Relativistic Vacuum Bubble Collisions Malte Buschmann, Toby Opferkuch · 23h ago · 3 min read Gravitational waves from vacuum first-order phase transitions probe the nonlinear dynamics of relativistic bubble collisions. Predicting their spectrum requires resolving Lorentz-contracted scalar bubble walls throughout a volume containing many bubbles, making the large-boost regime prohibitively expensive for direct lattice simulations. We develop a sim... Read full story

23:12 <Curie> arXiv.org | Quantum Co-Design of Inhomogeneous Many-Body Neutrino Fast Flavor Transformation 23h ago · 3 min read Dense-neutrino flavor evolution is a quantum many-body problem whose fully correlated treatment becomes rapidly more expensive with increasing particle number and spatial structure. We develop a \texttt{QCNO} quantum simulation code that maps a inhomogeneous forward-scattering neutrino Hamiltonian with advection and finite-range interactions to TEBD2 prod... Read full story

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