TopoFisher optimizes trainable filtrations, vectorizations, and compressors in persistent homology to maximize Fisher information, yielding higher information than fixed cosmological summaries and approaching neural baselines with far fewer parameters while generalizing better under simulator shifts
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Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
Mixed citation behavior. Most common role is background (50%).
abstract
We present cosmological parameter constraints based on the final nine-year WMAP data, in conjunction with additional cosmological data sets. The WMAP data alone, and in combination, continue to be remarkably well fit by a six-parameter LCDM model. When WMAP data are combined with measurements of the high-l CMB anisotropy, the BAO scale, and the Hubble constant, the densities, Omegabh2, Omegach2, and Omega_L, are each determined to a precision of ~1.5%. The amplitude of the primordial spectrum is measured to within 3%, and there is now evidence for a tilt in the primordial spectrum at the 5sigma level, confirming the first detection of tilt based on the five-year WMAP data. At the end of the WMAP mission, the nine-year data decrease the allowable volume of the six-dimensional LCDM parameter space by a factor of 68,000 relative to pre-WMAP measurements. We investigate a number of data combinations and show that their LCDM parameter fits are consistent. New limits on deviations from the six-parameter model are presented, for example: the fractional contribution of tensor modes is limited to r<0.13 (95% CL); the spatial curvature parameter is limited to -0.0027 (+0.0039/-0.0038); the summed mass of neutrinos is <0.44 eV (95% CL); and the number of relativistic species is found to be 3.84+/-0.40 when the full data are analyzed. The joint constraint on Neff and the primordial helium abundance agrees with the prediction of standard Big Bang nucleosynthesis. We compare recent PLANCK measurements of the Sunyaev-Zel'dovich effect with our seven-year measurements, and show their mutual agreement. Our analysis of the polarization pattern around temperature extrema is updated. This confirms a fundamental prediction of the standard cosmological model and provides a striking illustration of acoustic oscillations and adiabatic initial conditions in the early universe.
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representative citing papers
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citing papers explorer
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TopoFisher: Learning Topological Summary Statistics by Maximizing Fisher Information
TopoFisher optimizes trainable filtrations, vectorizations, and compressors in persistent homology to maximize Fisher information, yielding higher information than fixed cosmological summaries and approaching neural baselines with far fewer parameters while generalizing better under simulator shifts
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FRB20250613A: a remarkable repeating FRB with apparent millisecond-timescale scattering variations
FRB20250613A exhibits millisecond-timescale scattering variations, spectral depolarisation, and RM changes of ~300 rad m^{-2}, consistent with embedding in the dense stellar wind of a Be star binary companion in its low-metallicity dwarf host at z=0.0987.
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MEGA and SMILES Find Fewer Dusty Galaxies than Expected at Cosmic Noon
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Active Galactic Nuclei-driven Metallicity Enrichment in the Interstellar Medium of Mrk 573
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CIGaRS I: Combined simulation-based inference from type Ia supernovae and host photometry
A simulation-based inference framework that jointly models type Ia supernovae brightness dependences, host galaxy evolution, and cosmology from photometric observations.
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The Missing Hard Photons of Little Red Dots: Their Incident Ionizing Spectra Resemble Massive Stars
Little Red Dots show soft ionizing spectra consistent with massive stars, based on high H-alpha EWs and low HeII/H-beta ratios that rule out hard AGN spectra via Cloudy modeling.
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DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations
First-year DESI BAO data are consistent with flat LambdaCDM and, when combined with CMB, show a 2.5-3.9 sigma preference for evolving dark energy (w0 > -1, wa < 0) that strengthens with certain supernova datasets.
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AGN radiative feedback as the main regulator of [O III] outflow activity and obscuration in X-ray AGN
AGN radiation pressure, not black-hole mass, simultaneously boosts large-scale [O III] outflows and clears circumnuclear gas as Eddington ratio rises.
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SN 2020bij and a Possible Slow-Rise High-Velocity Subclass of Type IIP Supernovae
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Tidal origin of dark-matter free dwarf galaxies in the NGC 1052 group
The DM-free dwarfs around NGC 1052 may be tidal dwarf galaxies produced by the same 1:1 major merger that formed the elliptical galaxy NGC 1052.
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A solid unification of the dark sector
A generalized Chaplygin-type solid unifies dark matter and dark energy via an early pressureless phase transitioning to a late solid phase that supports acceleration and produces distinct low-redshift perturbation signatures.
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PHANTOM: A MATLAB and Octave Toolbox Connecting Linear Field Statistics to Dark Matter Halo Observables
PHANTOM is a public MATLAB/Octave toolbox for linear field statistics and halo observables in dark matter cosmology, validated to sub-percent agreement with Python packages colossus, hmf, and halomod.
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Non-linear Structure Formation in Planck+DESI Favoured Interacting Dark Energy Cosmologies
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Towards Unbreaking the Universe: MINERVA Measurements of Color Gradients in Massive Quiescent Galaxies Can Help Ease Too-Early Star Formation Tensions
Resolved JWST photometry reveals negative color gradients in three of four z>3 massive quiescent galaxies, and an age-only interpretation of these gradients eases—but does not remove—tensions with early-galaxy formation models.
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Massquerade: Impacts of Mass Ratio Reversals on Binary Black Hole Merger Rates and Mass Distributions
Mass ratio reversals produce qualitatively different contributions to BBH merger rates and masses in COMPAS versus SEVN simulations, with core-growth dominating and most systems arising from massive low-metallicity progenitors.
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From DES to KiDS: Domain adaptation for cross-survey detection of low-surface-brightness galaxies
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The Atacama Cosmology Telescope: DR6 Gravitational Lensing Map and Cosmological Parameters
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Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument
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Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
DES Y3 3x2pt analysis constrains S8=0.776±0.017 and Ωm=0.339±0.032 in flat ΛCDM, consistent with Planck CMB results at p=0.13-0.48.
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LSST Strong Lensing Systems Dark Matter Sensitivity Analysis with Neural Ratio Estimators
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Winding Back the Clock: Recent Star Formation Histories of Massive Quiescent Galaxies Are Consistent With Their Rapid Number Density Evolution Since $\mathbf{z\sim7}$
Star formation histories inferred for z=2-5 massive quiescent galaxies imply past number densities that align with observed rapid evolution since z~7.
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Modified Cosmology from Mass-to-Horizon Relation: Background Evolution
Generalized horizon-entropy models are cosmologically viable only within a narrow window around the Bekenstein–Hawking area law; all surviving models mimic ΛCDM.
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Investigating black hole accretion and feedback self-regulation in Seyfert galaxies using the FIRE-3 cosmological hydrodynamic simulations
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Fifty years of primordial helium abundances: A statistical reanalysis
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Co-evolution of Supermassive Black Holes and their Host L* galaxies: implications for Milky Way and M31
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The Simulated Oxygen Shortage (SOS): Mapping the Missing OVI in Simulated Dwarf Galaxies to Subgrid Physics
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Quasi-dust ekpyrotic scenario in Loop Quantum Cosmology
A quasi-dust ekpyrotic two-field model in Loop Quantum Cosmology produces viable primordial power spectra via coupled scalar and tensor perturbations.
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Constraints on Neutrino Physics from DESI DR2 BAO and DR1 Full Shape
DESI DR2 BAO and full-shape data plus CMB yield ∑m_ν < 0.0642 eV (95% CL) under ΛCDM, in 3σ tension with oscillation lower limits, relaxed to <0.163 eV in w0waCDM.
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Compact, AGN-hosting Dwarf Galaxies with "Little Red Dots"-like SEDs in the Local Universe
Local compact AGN-hosting dwarf galaxies with V-shaped SEDs are more evolved than high-redshift Little Red Dots, indicating distinct formation pathways.
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Reviving Motivated Inflationary Potentials with $K$-inflation in the light of ACT
K-inflation with non-canonical kinetic term G(φ) shifts α-attractor T-models and natural inflation into the Planck-ACT-LB-BK18 allowed region while satisfying Swampland conjectures and producing testable GW spectra.
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The Evolution of the SFR-M_* relation at 0.1<z<4: Environmental and Morphological Dependencies
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Probing Freeze-In Dark Matter via a Spin-2 Portal at the LHC with Vector Boson Fusion and Machine Learning
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Constraining Quintessential Inflation with ACT: A Gauss-Bonnet Gateway
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Colour evolution in the radio afterglow of GRB 241025A
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Dynamics of Self-Interacting Dark Sectors
The thesis solves coupled Boltzmann equations for freeze-in production and cannibal interactions in scalar theories with Z2/Z3 symmetries, mediator-coupled dark matter, cannibal production during reheating, and a hidden U(1) sector that can undergo an inverse first-order phase transition.
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Far-infrared observations of dust in Ly$\alpha$ emitters at z=2-6
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Probing the Nature of Lyman Continuum Emitting and Low-metallicity Galaxies Using the SKA
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Fast Simultaneous Surveys with On-the-Fly Mapping
MeerKLASS applies on-the-fly imaging on MeerKAT for a 10,000 sq. deg. UHF-band continuum survey at 14 arcsec resolution and 25 μJy/beam rms, run commensally with HI intensity mapping.
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Raising the reionization optical depth with inflationary CMB features
Marginalizing over generalized slow-roll inflationary templates for the CMB low-power feature raises the 95% upper limit on τ to 0.075 (Planck) or 0.082 (all CMB+BAO), resolving incompatibility with lower bounds.
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Late-time JWST/NIRCam Observations of the Extremely Long-duration GRB 250702B/EP 250702a and Its Host Galaxy
Late-time JWST/NIRCam data on GRB 250702B show a high-mass dusty host and possible ~3-sigma transient detections in two bands suggesting light-curve flattening.
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Galaxy formation in modified gravity -- II. galaxy halo connection and assembly bias
Simulations in f(R) gravity show that environment density in the HOD model reduces assembly bias effects to 2-3% at z≲0.5 in both ΛCDM and modified gravity.
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Learning the Universe with the 2nd Generation of CAMELS: Varying 35 parameters of the IllustrisTNG model in (50Mpc/h)^3 boxes
New CAMELS simulations in larger (50 Mpc/h)^3 boxes with 35 varied parameters produce tighter neural-network constraints on model parameters than prior smaller-volume runs, with public data release.
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Systematically Measuring Ultra-Diffuse Galaxies. IX. A Gyr in the Life of Nearby Low Surface Brightness Galaxies
Multi-wavelength analysis of 966 low surface brightness galaxies finds short star formation episodes, mass-dependent quenching, and a marginal 8% size increase linked to star formation.
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Testing cosmic anisotropy with the Combo correlation of gamma-ray bursts
Larger sample of 244 GRBs with Combo correlation shifts best-fit anisotropy longitude by 54° from Pantheon-only result and deviates >1σ in hemisphere method, unlike smaller A118 sample, indicating potential to reduce fake signals from inhomogeneous distributions.
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The Lumina Project: CMB Optical Depth Fluctuations from Patchy Reionization
The Lumina simulation shows that explicit light-cone integrations produce a CMB optical depth 7% higher than volume-weighted ionization histories, with the excess accumulating near redshift 8 and mass-weighted estimates capturing most of the difference.
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Cosmic Birefringence from the Atacama Cosmology Telescope Data Release 6
Bayesian analysis of ACT DR6 CMB polarization data measures cosmic birefringence angle β = 0.215° ± 0.074° excluding zero at 2.9σ, consistent with prior WMAP and Planck results but limited by unexplained systematics.
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New Insights into Dark Energy from DESI DR2 with CMB and SNIa
Systematic dataset swaps show DESY5 low-redshift SNIa, Planck CMB plus lensing, and DESI-DR2 BAO as the dominant sources of w0waCDM tension with ΛCDM, while other combinations remain consistent.
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Revisiting $\Lambda$CDM extensions in light of re-analyzed CMB data
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Union Through UNITY: Cosmology with 2,000 SNe Using a Unified Bayesian Framework
Union3 compilation of 2087 SNe Ia with UNITY1.5 framework shows 1.7-2.6 sigma tension with LambdaCDM and possible thawing dark energy.
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Galaxy and halo angular clustering in LCDM and Modified Gravity cosmologies
N-body light-cone mocks show 2-4 sigma deviations in third-order angular clustering between LCDM and f(R)/nDGP models at z=0.15-0.3 for halos and galaxies, with stronger signals in the dark-matter field.