Astrophysics papers — 2026-08-12

Singlet-Doublet fermion origin of dark matter, neutrino mass and inverse first-order electroweak phase transition. This paper, titled "Singlet-Doublet fermion origin of dark matter, neutrino... High-energy neutrino signatures of embedded GRB jets in AGN disks: a dynamic jet-propagation framework. The paper develops a time-dependent framework for calculating high-energy... Identification of a Large-Scale Diffuse Gamma-Ray Structure in the Southern Galactic Hemisphere. The paper identifies and characterizes a large-scale diffuse gamma-ray... Evidence for the First Globular Cluster Stellar Stream beyond the Milky Way. This paper presents evidence for the first extragalactic globular cluster... Classifying Quasar Types Without a Spectrum. The paper demonstrates that Slepian Wavelet Variance (SWV) can be used to... Transport properties in binary neutron star mergers: Effect of magnetic field. In extreme environments such as binary neutron star mergers, temperatures as... The effect of galaxy interactions on star formation rates in the COLIBRE simulations. The paper investigates the effect of galaxy interactions on star formation... Deep MUSE observations of SNR 0509-67.5 reveal a double degenerate merger progenitor. Deep MUSE observations of SNR 0509-67.5 reveal that the coronal [Fe xiv] λ5303... New constraints on the binary system HD 327083 and its gaseous and dusty environments. The paper "New constraints on the binary system HD 327083 and its gaseous and... Chemical Tracers for 3D Atmospheric Asymmetries on WASP-69 b. This study investigates how the atmospheric chemistry on WASP-69 b is shaped by... How Neutron Star Radii Encode the Dense-Matter Equation of State and Hadron-Quark Transition. The paper investigates how future high-precision neutron star (NS) radius... The Delay Time Distribution of Quasi-Periodic Eruptions. Quasi-periodic eruptions (QPEs) are quasi-periodic X-ray bursts observed in the... Spiral structure from the interference of gravitational eigenmodes in ultralight dark matter halos. This paper models ultralight dark matter (ULDM) halos as superpositions of... CHANG-ES XL: Magnetic Field Structures in the Disk and Halo of NGC 891. CHANG-ES XL: Magnetic Field Structures in the Disk and Halo of NGC 891 This... The Shape of the Vertical Action Distribution Locates the Scatterers that Heat the Galactic Disc. The paper investigates what mechanism heats the Milky Way's stellar disc... The Ĝ Infrared Search for Extraterrestrial Civilizations with Large Energy Supplies. V. When Galaxies Glow with Industry. Here is a summary of the paper: The paper presents the most robust stellar... CLASSY. XV. Kinematics and Spatial Distributions of Outflows in Local Highly Star-Forming Galaxies. Star-forming galaxies drive massive outflows that play an important role in... Observing Co-Located Neutral and Ionized Gas-Phase Iron Depletion in the Magellanic Clouds. The paper "Observing Co-Located Neutral and Ionized Gas-Phase Iron Depletion in... Altered Cosmic Organics as Venus' Ultraviolet Absorbers. Here is a summary of the paper: "Venus’ ultraviolet (UV) absorbers... FLAGS II: Constraining Galaxy Formation Models with Dimensionality Reduction of Direct Observables. FLAGS II: CONSTRAINING GALAXY FORMATION MODELS WITH DIMENSIONALITY REDUCTION OF... Cherenkov light as a mechanism for light flashes seen by astronauts in space. The paper investigates the mechanism behind light flashes (LFs) seen by... From Cluster Cores to the Low-Density Field: Strong Environmental Quenching of Galaxy Star Formation at Low Redshift. This paper investigates how galaxy star formation activity depends on... LIGO A: Detector Design and Science Prospects Beyond A+. The paper presents the LIGO A detector concept, an upgrade for the LIGO... Constraining the gamma-ray efficiency of LINER outflows with Fermi-LAT and MEGARA. This paper investigates whether the extended ionized gas outflows in... Recycled Gas Dominates the Metal-rich Fuel of Supermassive Black Holes. Based on the paper, here is the summary: Using a suite of 30 high-resolution... Testing Covarying Coupling Constants (CCC) against the full SPARC rotation-curve sample: a like-for-like comparison with MOND and NFW. Title: Testing Covarying Coupling Constants (CCC) against the full SPARC... MeerKAT Reveals Evidence of a Radio Megahalo at GHz Frequency. The paper presents MeerKAT L-band (1.28 GHz) observations of the massive galaxy... Impact of Neutrino Flavour Conversion on the Diffuse Neutrino Background from Neutrino-dominated Accretion Flows. Neutrino-dominated accretion flows (NDAFs) are believed to form during the... CIBER galaxy cross-correlations reveal a bright, low-redshift NIR background. This paper presents the first tomographic analysis of near-infrared (NIR)... Results from the first spectropolarimetric survey of Dor pulsators. Based on the paper, here is the summary: Context. CORN -- Chronometers of Relic Nature I: The first estimate of the expansion rate of the Universe using compact relic galaxies. Context. Nascent Embedded-protostar Survey in Taurus (NEST) I: Protostellar Multiplicity. We present new ALMA 0.9 mm and VLA 9 mm observations in the Taurus Molecular... Robustness of the primordial power spectrum in hybrid loop quantum cosmology to approximations near the bounce. The paper proves the robustness of the analytic approximation used in (hybrid)... Why is GN-z11 Bright, Compact, and Nitrogen Enhanced? Insights from UV Absorption and Emission Diagnostics. This paper investigates the UV spectrum of GN-z11, a luminous, compact galaxy... Trace the Self-Gravitating Gas Using CO Isotopologues. The paper presents a new method for estimating the mass of gravitationally... A Radiation-Hydrodynamic Light Curve Grid and Interpolation Framework for Stripped-Envelope Supernovae. We present a grid of 8,148 stripped-envelope supernovae (SESNe) light curves... SPORE: An Event-Level Sampling Pipeline for Multi-Telescope Neutrino Astronomy. spore is an open-source Python package for simulating neutrino events from... Massive cold hybrid stars in a modified Polyakov-Nambu-Jona-Lasinio model. We propose a modified Polyakov-loop Nambu–Jona-Lasinio (mPNJL) model in which... Interacting Supernovae: a Radio and X-ray Strategy to Constrain the Structure of the Circumstellar Medium. The interaction of supernova (SN) ejecta with the dense circumstellar medium... The Wave-Regulated Precursor of a Near-Parallel Interplanetary Shock Observed by Parker Solar Probe. The paper reports Parker Solar Probe (PSP) observations of a fast,... 3D Radiative Transfer of Lyman-series Lines with SKIRT. The paper presents the extension of the Monte Carlo radiative transfer (MC-RT)... Hemispheric Asymmetry of Solar Active Regions Arises from a Nested Population. We investigate the longitude–time distribution of NOAA active regions (ARs)... Thermal false vacuum decay near black holes is aspherical. The paper studies the decay of a false vacuum state of a scalar field near a... Chemical fingerprints of binary mass transfer in massive stars. The majority of massive stars are born in close binary systems. Large-Scale Dynamos Driven by Shear-Flow-Induced Jets. This paper analytically and numerically demonstrates a robust, non-traditional... First and Comprehensive Study of V0757 Pup: Doradus Pulsator in Detached Eclipsing Binary. This paper presents the first comprehensive study of V0757 Pup (TIC 6939791), a... Three new exoplanet systems from the Dispersed Matter Planet Project. This paper presents a radial velocity analysis of three bright, low-activity... Statistics of Solar Filament Mass based on CHASE Sun-as-a-star Spectroscopic Observations. This paper presents the first large-sample Sun-as-a-star statistical study of... Climates of Gl 514 b. The paper "Climates of Gl 514 b" by Héctor E. Infrared-to-visible albedo ratio of Phobos: Comparison with primitive asteroids. The paper "Infrared-to-visible albedo ratio of Phobos: Comparison with... Dynamic Trajectory Analysis of Meteoroids Showing Minimal Deceleration. This paper presents a new method for analyzing the atmospheric trajectories of... Parametric Study of Torus Instability Threshold. This paper presents a parametric numerical study of the threshold of the torus... Molecule-specific diffusion and desorption of interstellar ices on carbonaceous dust. Interstellar ices form on dust grains in the coldest regions of molecular... Ripples in the OCEANS: Broad Line Variability of Little Red Dots. Little Red Dots (LRDs) are a unique class of compact, red sources discovered in... Electron temperature and emission measure of HII regions in the central molecular zone (CMZ) from H40 αrecombination line and continuum emissions by ALMA CMZ Exploration Survey - ACES -. The paper derives the overall distribution of HII regions in the Central... The Radcliffe Wave is not alone in the Local System. The spatial distribution of open star clusters (OSCs) younger than 30 million... Gravity modes and potential evidence for Rossby Waves in late O-type supergiants. This paper analyzes TESS light curves of three late O-type supergiant stars (HD... Radio flares and X-ray hardening embedded in the long soft state of 4U 1543-475. The paper presents a comprehensive multi-wavelength study of the black hole... A systematic comparison of green valley selection criteria across multiparameter spaces using a homogeneous ultraviolet-optical dataset. We present a systematic comparison of commonly adopted green valley (GV)... Gaia parallax bias via spherical harmonics: A Python tool and discussion of possible causes. The paper introduces a practical method to evaluate and correct the... Disco in the Dust: Reflected light at the bow shock around Betelgeuse's companion explains its observed luminosity. Recent detections of α Orionis B, the putative companion to Betelgeuse, have... 1.5D investigation of the Hanle effect in the Ca I 4227 line using partial frequency redistribution. Comparison of synthetic Stokes profiles in Bifrost and MURaM-ChE rMHD models. The paper investigates the formation of synthetic Stokes profiles of the Ca i... Discovery of 27 new Rotating Radio Transients by MeerTRAP. The paper reports the discovery of 27 new Galactic radio transients by the... Evolutionary tracks of giant planets formed by disk instability. This paper presents evolutionary tracks for giant planets formed via disk... The Ambipolar electric field in multispecies plasma atmospheres: effects of alpha particles and stochastic heating. We investigate stationary states of a collisionless gravitationally stratified... Spontaneous Scoto-leptogenesis. The paper proposes a low-scale spontaneous leptogenesis scenario within the... Voltage-to-temperature calibration of the High Altitude THz Solar telescope acquisition system. This paper presents the experimental characterization and... Search for a Globular Cluster whose Passage through the Galactic Disk could Trigger the Radcliffe Wave. Based on a catalog of 152 globular clusters (GCs), their orbits were... Astronomical Cardiology II: A Search For Heartbeat Stars Using APOGEE and TESS. Stellar binaries in short-period, highly eccentric systems with significant...

The papers

• High-energy neutrino signatures of embedded GRB jets in AGN disks: a dynamic jet-propagation framework — The paper develops a time-dependent framework for calculating high-energy neutrino emission from relativistic jets embedded in active galactic nucleus (AGN) accretion disks, following the full jet propagation history rather than relying on single-state approximations.
• Identification of a Large-Scale Diffuse Gamma-Ray Structure in the Southern Galactic Hemisphere — The paper identifies and characterizes a large-scale diffuse gamma-ray structure in the Southern Galactic Hemisphere using 17 years of Fermi-LAT data (August 4, 2008, to October 20, 2025), covering the energy range 200 MeV to 500 GeV with the CLEAN event class.
• Classifying Quasar Types Without a Spectrum — The paper demonstrates that Slepian Wavelet Variance (SWV) can be used to classify Type 1 and Type 2 quasars using only irregularly sampled photometric light curves, without the need for spectroscopy.
• Singlet-Doublet fermion origin of dark matter, neutrino mass and inverse first-order electroweak phase transition — Summary This paper, titled "Singlet-Doublet fermion origin of dark matter, neutrino mass and inverse first-order electroweak phase transition," studies a beyond Standard Model (BSM) framework that extends the SM with two generations of SU(2)L singlet and doublet fermions, one sin
• Evidence for the First Globular Cluster Stellar Stream beyond the Milky Way — This paper presents evidence for the first extragalactic globular cluster stellar stream, identified in deep Hubble Space Telescope imaging of the ultra-diffuse galaxy UGC9050-Dw1.
• LIGO A: Detector Design and Science Prospects Beyond A+ — The paper presents the LIGO A detector concept, an upgrade for the LIGO observatories based on room-temperature interferometers beyond the fifth observing run (O5).
• Altered Cosmic Organics as Venus' Ultraviolet Absorbers — "Venus’ ultraviolet (UV) absorbers significantly contribute to the atmosphere’s energy budget. However, the composition of these absorbers remains a mystery. [episode]
• Molecule-specific diffusion and desorption of interstellar ices on carbonaceous dust — Interstellar ices form on dust grains in the coldest regions of molecular clouds and preserve key volatile reservoirs that could be incorporated into protoplanetary disks during star and planet formation.
• Cherenkov light as a mechanism for light flashes seen by astronauts in space — The paper investigates the mechanism behind light flashes (LFs) seen by astronauts in space, first reported during the Apollo 11 mission.
• Infrared-to-visible albedo ratio of Phobos: Comparison with primitive asteroids — The paper "Infrared-to-visible albedo ratio of Phobos: Comparison with primitive asteroids" by T. J. Dyer et al. [episode]
• Statistics of Solar Filament Mass based on CHASE Sun-as-a-star Spectroscopic Observations — This paper presents the first large-sample Sun-as-a-star statistical study of solar filaments, utilizing full-disk Hα spectroscopic observations from the Chinese Hα Solar Explorer (CHASE).
• Results from the first spectropolarimetric survey of gamma Dor pulsators — Based on the paper, here is the summary: Context. Magnetic fields can have an important influence on stellar structure and evolution.
• SPORE: An Event-Level Sampling Pipeline for Multi-Telescope Neutrino Astronomy — spore is an open-source Python package for simulating neutrino events from astrophysical point and extended sources using tabulated instrument response functions (IRFs).
• Chemical Tracers for 3D Atmospheric Asymmetries on WASP-69 b — This study investigates how the atmospheric chemistry on WASP-69 b is shaped by the interplay between atmospheric composition, photochemistry, and three-dimensional atmospheric structure, using GCM-derived temperature fields as inputs for 1D photochemical-kinetics models. [episode]
• First and Comprehensive Study of V0757 Pup: gamma- Doradus Pulsator in Detached Eclipsing Binary — This paper presents the first comprehensive study of V0757 Pup (TIC 6939791), a detached eclipsing binary system containing a γ Doradus pulsator.
• Three new exoplanet systems from the Dispersed Matter Planet Project — This paper presents a radial velocity analysis of three bright, low-activity stars identified by the Dispersed Matter Planet Project (DMPP): DMPP-7 (HD 118006), HD 67200, and HD 2134.
• Interacting Supernovae: a Radio and X-ray Strategy to Constrain the Structure of the Circumstellar Medium — The interaction of supernova (SN) ejecta with the dense circumstellar medium (CSM) converts shock kinetic energy into radiation across multiple wavebands.
• Parametric Study of the Torus Instability Threshold — This paper presents a parametric numerical study of the threshold of the torus instability, which is a key process in solar eruptions.
• Testing Covarying Coupling Constants (CCC) against the full SPARC rotation-curve sample: a like-for-like comparison with MOND and NFW — Authors: Rajendra P.
• Dynamic Trajectory Analysis of Meteoroids Showing Minimal Deceleration — This paper presents a new method for analyzing the atmospheric trajectories of meteoroids that show minimal deceleration, termed "minimally decelerating objects" (MDOs). [episode]
• A Radiation-Hydrodynamic Light Curve Grid and Interpolation Framework for Stripped-Envelope Supernovae — We present a grid of 8,148 stripped-envelope supernovae (SESNe) light curves based on radiation-hydrodynamic simulations of exploding helium-star progenitors.
• From Cluster Cores to the Low-Density Field: Strong Environmental Quenching of Galaxy Star Formation at Low Redshift — This paper investigates how galaxy star formation activity depends on environment using a sample of 81,647 SDSS galaxies selected over 0.03 ≤ z ≤ 0.075 and 9.7 ≤ log10 (M⋆ /h−2 M⊙) ≤ 11.0, including 18,426 members from 572 clusters in the GalWCat19 catalog.
• Climates of Gl 514 b — The paper "Climates of Gl 514 b" by Héctor E. Delgado Díaz et al. investigates the potential climates and surface habitability of the exoplanet Gl 514 b, a super-Earth (minimum mass 5.2 ± 0.9 M⊕) orbiting an M0.5 dwarf star 7.62 pc from Earth.
• The ^G Infrared Search for Extraterrestrial Civilizations with Large Energy Supplies. V. When Galaxies Glow with Industry — The paper presents the most robust stellar population synthesis (SPS)-based search for galaxy-spanning technological waste heat (Dyson spheres) to date.
• Recycled Gas Dominates the Metal-rich Fuel of Supermassive Black Holes — Based on the paper, here is the summary: Using a suite of 30 high-resolution cosmological zoom-in simulations, this paper investigates the chemical properties of gas accreted onto supermassive black holes (SMBHs) in massive galaxies with stellar masses of 10 10.9−11.9 M⊙ and
• CORN -- Chronometers of Relic Nature I: The first estimate of the expansion rate of the Universe using compact relic galaxies — Context.
• Why is GN-z11 Bright, Compact, and Nitrogen Enhanced? Insights from UV Absorption and Emission Diagnostics — This paper investigates the UV spectrum of GN-z11, a luminous, compact galaxy at z = 10.60 with strong nitrogen lines, using deep JWST/NIRSpec high-resolution IFU and medium-resolution MSA spectra from the JADES, SPURS, and GO programs.
• Thermal false vacuum decay near black holes is aspherical — The paper studies the decay of a false vacuum state of a scalar field near a Schwarzschild black hole that is in thermal equilibrium with its environment at the Hawking temperature.
• FLAGS II: Constraining Galaxy Formation Models with Dimensionality Reduction of Direct Observables — FLAGS II: CONSTRAINING GALAXY FORMATION MODELS WITH DIMENSIONALITY REDUCTION OF DIRECT OBSERVABLES This paper presents the second installment of the FLAGS series, which aims to derive robust constraints on galaxy formation models using direct observables.
• Trace the Self-Gravitating Gas Using CO Isotopologues — The paper presents a new method for estimating the mass of gravitationally bound gas in molecular clouds using multi-line CO isotopologue observations, specifically combining 12CO, 13CO, and C18O J=1-0 data.
• CLASSY. XV. Kinematics and Spatial Distributions of Outflows in Local Highly Star-Forming Galaxies — Star-forming galaxies drive massive outflows that play an important role in galaxy evolution by regulating feedback and influencing the dynamics of surrounding media.
• 3D Radiative Transfer of Lyman-series Lines with SKIRT — The paper presents the extension of the Monte Carlo radiative transfer (MC-RT) code SKIRT to include Lyman-series lines of H-like ions, enabling self-consistent modelling of resonance scattering, radiative recombination, and polarisation of these lines in X-ray photo-ionised plas
• Large-Scale Dynamos Driven by Shear-Flow-Induced Jets — This paper analytically and numerically demonstrates a robust, non-traditional dynamo effect driven by shear-flow-induced jets, termed the jet-driven ϒ-dynamo.
• Observing Co-Located Neutral and Ionized Gas-Phase Iron Depletion in the Magellanic Clouds — The paper "Observing Co-Located Neutral and Ionized Gas-Phase Iron Depletion in the Magellanic Clouds" by Yun Qi Li et al.
• The Wave-Regulated Precursor of a Near-Parallel Interplanetary Shock Observed by Parker Solar Probe — The paper reports Parker Solar Probe (PSP) observations of a fast, near-parallel interplanetary shock at 0.24 AU on 2023 March 13, and resolves its upstream wave field into four distinct families for the first time at a fast shock near the Sun.
• How Neutron Star Radii Encode the Dense-Matter Equation of State and Hadron-Quark Transition — The paper investigates how future high-precision neutron star (NS) radius measurements encode microscopic information about the dense-matter equation of state (EOS), focusing on a possible first-order hadron–quark phase transition and the resulting mass–radius topology.
• Massive cold hybrid stars in a modified Polyakov-Nambu-Jona-Lasinio model — We propose a modified Polyakov-loop Nambu–Jona-Lasinio (mPNJL) model in which the Polyakov potential is given by an explicit dependence on the quark chemical potential, allowing it to remain finite at zero temperature and thus to describe the confinement-deconfinement transitio
• Chemical fingerprints of binary mass transfer in massive stars — The majority of massive stars are born in close binary systems. As stars expand when they age, mass transfer or even a merger with their companion is inevitable.
• New constraints on the binary system HD 327083 and its gaseous and dusty environments — The paper "New constraints on the binary system HD 327083 and its gaseous and dusty environments" presents a comprehensive multi-wavelength study of the B[e] binary system HD 327083, combining optical and near-infrared spectroscopy, photometry, and mid-infrared interferometry to
• Spiral structure from the interference of gravitational eigenmodes in ultralight dark matter halos — This paper models ultralight dark matter (ULDM) halos as superpositions of gravitational eigenmodes in a fixed background potential, and finds that interference between these eigenmodes can produce long-lived spiral density perturbations.
• Deep MUSE observations of SNR 0509-67.5 reveal a double degenerate merger progenitor — Deep MUSE observations of SNR 0509-67.5 reveal that the coronal [Fe xiv] λ5303 emission line appears with either one or two velocity components across the entire remnant, arising from reverse-shocked ejecta moving toward and away from the observer.
• Constraining the gamma-ray efficiency of LINER outflows with Fermi-LAT and MEGARA — This paper investigates whether the extended ionized gas outflows in Low-Ionization Nuclear Emission-line Regions (LINERs) can efficiently accelerate particles to relativistic energies and power high-energy gamma-ray emission, or whether a compact nuclear jet is required.
• MeerKAT Reveals Evidence of a Radio Megahalo at GHz Frequency — The paper presents MeerKAT L-band (1.28 GHz) observations of the massive galaxy cluster RXC J0528.9−3927 (J0528) at z = 0.284, revealing faint diffuse radio emission surrounding its central radio halo.
• Transport properties in binary neutron star mergers: Effect of magnetic field — In extreme environments such as binary neutron star mergers, temperatures as high as 50 MeV and magnetic fields up to 10 17 G, reach a regime where neutrino transport governs the macroscopic thermodynamic and chemical evolution.
• CIBER times galaxy cross-correlations reveal a bright, low-redshift NIR background — This paper presents the first tomographic analysis of near-infrared (NIR) extragalactic background light (EBL) anisotropies, cross-correlating CIBER 1.1 and 1.8 µm imager data with photometric galaxy catalogs from DESI Legacy Survey DR8 and Hyper-Suprime-Cam Ultra-Deep Survey.
• The effect of galaxy interactions on star formation rates in the COLIBRE simulations — The paper investigates the effect of galaxy interactions on star formation rates (SFRs) in the COLIBRE simulations, a set of cosmological hydrodynamical simulations of galaxy formation.
• The Shape of the Vertical Action Distribution Locates the Scatterers that Heat the Galactic Disc — The paper investigates what mechanism heats the Milky Way's stellar disc vertically, by analyzing the shape of the distribution of vertical action (Jz) in a coeval stellar population.
• Impact of Neutrino Flavour Conversion on the Diffuse Neutrino Background from Neutrino-dominated Accretion Flows — The paper investigates the impact of neutrino flavor conversion on the Diffuse Neutrino Background from Neutrino-dominated Accretion Flows (DNNB), which arises from fallback accretion in core-collapse supernovae (CCSNe). [episode]
• Robustness of the primordial power spectrum in hybrid loop quantum cosmology to approximations near the bounce — The paper proves the robustness of the analytic approximation used in (hybrid) loop quantum cosmology to compute the primordial power spectrum of cosmological perturbations for a recently proposed vacuum state (the non-oscillatory state with asymptotic Hamiltonian diagonalization
• Nascent Embedded-protostar Survey in Taurus (NEST) I: Protostellar Multiplicity — We present new ALMA 0.9 mm and VLA 9 mm observations in the Taurus Molecular Cloud (TMC) of 25 protostellar systems, containing 40 protostars, observed at 0.′′ 3 (∼20 au) resolution.
• The Delay Time Distribution of Quasi-Periodic Eruptions — Quasi-periodic eruptions (QPEs) are quasi-periodic X-ray bursts observed in the nucleus of a galaxy.
• Hemispheric Asymmetry of Solar Active Regions Arises from a Nested Population — We investigate the longitude–time distribution of NOAA active regions (ARs) during Solar Cycles 22–24 and find statistically significant North–South asymmetry in AR emergence.
• CHANG-ES XL: Magnetic Field Structures in the Disk and Halo of NGC 891 — This paper presents new Karl G. Jansky Very Large Array (VLA) S-band (2-4 GHz) observations of the edge-on spiral galaxy NGC 891, complemented by C-band data, to investigate the structure of its radio continuum halo.
• Ripples in the OCEANS: Broad Line Variability of Little Red Dots — Little Red Dots (LRDs) are a unique class of compact, red sources discovered in the JWST extragalactic deep fields. Determining if they are indeed powered by accreting supermassive black holes (SMBHs) is one of the main drivers of the intense study of these objects.
• The Radcliffe Wave is not alone in the Local System — The spatial distribution of open star clusters (OSCs) younger than 30 million years old in the Local System was studied. It was shown for the first time that a significant number of OSCs belong to the recently discovered Vela Ridge gas and dust supercloud.
• Electron temperature and emission measure of HII regions in the central molecular zone (CMZ) from H40 alpha recombination line and continuum emissions by ALMA CMZ Exploration Survey - ACES - — The paper derives the overall distribution of HII regions in the Central Molecular Zone (CMZ) and their fundamental properties—electron temperature (Te) and emission measure (EM), and hence electron density—by analyzing the ACES (ALMA CMZ Exploration Survey) H40α (99.02 GHz)
• Gravity modes and potential evidence for Rossby Waves in late O-type supergiants — This paper analyzes TESS light curves of three late O-type supergiant stars (HD 188001, HD 192639, and HD 195592) to search for periodic signatures, rotational modulation, and potential evidence of Rossby waves (r modes).
• A systematic comparison of green valley selection criteria across multiparameter spaces using a homogeneous ultraviolet-optical dataset — We present a systematic comparison of commonly adopted green valley (GV) selection criteria by examining their distributions across multiple observational and physical parameter spaces.
• Radio flares and X-ray hardening embedded in the long soft state of 4U 1543-475 — The paper presents a comprehensive multi-wavelength study of the black hole X-ray binary 4U 1543–475 during its 2021 outburst, focusing on radio flaring episodes that are commonly interpreted as signatures of episodic jet production and are embedded within states when the X-ray
• Gaia parallax bias via spherical harmonics: A Python tool and discussion of possible causes — The paper introduces a practical method to evaluate and correct the sky-correlated, magnitude-dependent parallax bias in Gaia DR3, using a scalar spherical harmonic (SSH) decomposition of the measured parallaxes of over one million distant quasars and AGNs from the CRF catalog.
• Disco in the Dust: Reflected light at the bow shock around Betelgeuse's companion explains its observed luminosity — Recent detections of α Orionis B, the putative companion to Betelgeuse, have been reported using multiple instruments and techniques. These include, most recently, a > 6σ detection using VLT/SPHERE reported by M. Montargès et al. (2026).
• Discovery of 27 new Rotating Radio Transients by MeerTRAP — The paper reports the discovery of 27 new Galactic radio transients by the MeerTRAP single pulse search programme at the MeerKAT telescope. These transients are classified as rotating radio transients (RRATs), a subclass of pulsars that exhibit occasional single radio pulses.
• 1.5D investigation of the Hanle effect in the Ca I 4227 line using partial frequency redistribution. Comparison of synthetic Stokes profiles in Bifrost and MURaM-ChE rMHD models — The paper investigates the formation of synthetic Stokes profiles of the Ca i 4227 Å line in two different 3D radiative magnetohydrodynamic (rMHD) simulations of the solar chromosphere: Bifrost and MURaM-ChE.
• The Ambipolar electric field in multispecies plasma atmospheres: effects of alpha particles and stochastic heating — We investigate stationary states of a collisionless gravitationally stratified plasma atmosphere composed of electrons, protons, and α particles by extending Pannekoek–Rosseland theory to multispecies and multi-temperature plasmas.
• Evolutionary tracks of giant planets formed by disk instability — This paper presents evolutionary tracks for giant planets formed via disk instability, simulated using the MESPA code with modifications to include the extended, low-density gas clumps in the pre-collapse phase. [episode]
• Spontaneous Scoto-leptogenesis — The paper proposes a low-scale spontaneous leptogenesis scenario within the dynamical minimal scotogenic model, dubbed "Spontaneous Scoto-leptogenesis," which simultaneously accommodates neutrino masses, inert scalar dark matter (DM), and the observed baryon asymmetry of the Univ
• Voltage-to-temperature calibration of the High Altitude THz Solar telescope acquisition system — This paper presents the experimental characterization and voltage-to-temperature calibration of the High Altitude Terahertz Solar (HATS) photometer's acquisition system.
• Search for a Globular Cluster whose Passage through the Galactic Disk could Trigger the Radcliffe Wave — Based on a catalog of 152 globular clusters (GCs), their orbits were constructed to determine their intersections with the Galaxy’s plane of symmetry. Young open star clusters (OSCs) were selected from the selection zone characteristic of the Radcliffe wave.
• Astronomical Cardiology II: A Search For Heartbeat Stars Using APOGEE and TESS — Stellar binaries in short-period, highly eccentric systems with significant tidal deformations near pericenter, also known as heartbeat stars, are a laboratory for studying dynamical tides and oscillations in stars.