Daily Summary for 2026-09-18

Introduction to the show: ident: Astrophysics Radio. The week's best astrophysics papers, unpacked for curious ears.

Jocelyn: Welcome to the show!

Vera: Today we have a special show for you.

The summary: Vera: Welcome everyone to today's research review for September 18th, 2026. We have a lot of ground to cover regarding how planets move and how we might actually see them.

Jocelyn: It starts with the struggle of finding exomoons. It turns out that when gas giants migrate toward their stars, they tend to lose their moons in the process.

Subrahmanyan: Researchers used N-body simulations through a program called REBOUND to test this. They wanted to see if these moving giants could actually keep any satellites during the journey.

Vera: The type of migration matters a lot. Disk migration allows some survival, especially for retrograde moons, which have about a 25 percent survival rate compared to only 8 percent for prograde ones.

Jocelyn: But high-eccentricity migration is much more brutal. In those cases, the orbital excitation is so extreme that the simulations show no moons are able to survive at all.

Subrahmanyan: There is a small silver lining, though. Massive exomoons around 10 Earth masses can actually act as a dynamical shield, halting the migration in about 30 percent of cases.

Vera: That helps preserve the system, but what happens if the planet is ejected from its system entirely? Does it take its moons with it?

Jocelyn: Interestingly, yes. While about 10 percent of gas giants are ejected as free-floating planets, roughly 40 percent of those ejected planets manage to retain their moons.

Subrahmanyan: When you add in magnetic torques and atmospheric stripping, the picture for hot Jupiters looks grim. They seem generally devoid of primordial moons because of these instabilities.

Vera: So, if we want to find moons, we shouldn't be looking at hot Jupiters. The study suggests focusing on cold Jupiters and free-floating planets instead.

Jocelyn: That shift in focus requires better observational strategies too. There is a new proposal for the Cool Planet Imaging Coronagraph, or CPI-C, using multi-band photometry.

Subrahmanyan: Right, they want to use two distinct channels: one for visible light and one for near-infrared wavelengths to help decouple complex atmospheric signals.

Vera: By using eight broadband filters to integrate the planet-to-star flux ratio, they can get a much clearer picture of what is actually happening in those atmospheres.

Jocelyn: Exactly. The visible light helps us see the spectral shape and methane modulation, which tells us about cloud sedimentation and metallicity.

Subrahmanyan: Meanwhile, the near-infrared data probes thermal emission. This allows us to constrain things like effective temperature, radius, surface gravity, and mass.

Vera: Combining those VIS4 and NIR4 datasets is much more powerful than using just one. Simulations show it provides much tighter constraints on radius and cloud properties.

Jocelyn: This technique is vital for recent successes like RX J0534.0-0221 b, one of the lowest-mass giants imaged to date, orbiting an M-dwarf.

Subrahmanyan: It was observed by JWST/NIRCam and confirmed with LBTI/LMIRCam. Its color suggests either enhanced metallicity or disequilibrium chemistry, which is exactly what this photometry aims to solve.

Vera: Especially since it was detected alongside a resolved debris disk, showing just how complex these formation environments really are. We will be right back after the break.of 3 parts) in the next segment.

Vera: Speaking of the early universe, researchers just used gravitational lensing on the MACS J0416 cluster to hunt for those elusive Population III stars.

Jocelyn: They were looking for extreme magnification events as stars crossed caustic lines between redshifts seven and seventeen. Did they catch any?

Subrahmanyan: Not a single transit was found during the 126 days of observation. However, that null result is actually quite useful for setting limits.

Vera: Right, because by not seeing them, they could constrain the surface brightness of a hundred solar mass Population III sky to at least 32.8 magnitudes per arcsecond squared.

Jocelyn: It sounds like they modeled this as a Poisson process to estimate how often these events should happen.

Subrahmanyan: Exactly, which gives us an empirical benchmark of about 0.29 caustic-transits per cluster every year for future surveys to use.

Vera: Moving from the first stars to much cooler objects, JWST just did some incredible time-series spectroscopy on the brown dwarf WISE 0855.

Jocelyn: They watched it for eleven hours with observations every fifteen minutes, right? The data showed carbon monoxide absorption changing by up to ten percent.

Subrahmanyan: They used principal component analysis to find that carbon monoxide and phosphine variations actually correlate, likely due to quenched atmospheric pressures.

Vera: Meanwhile, water cloud thickness seems to vary at much lower pressures. It is a much more dynamic atmosphere than we might have thought.

Jocelyn: While we look at atmospheres, another study looked at the architecture of exoplanetary systems, specifically a census of 147 northern hot Jupiters.

Subrahmanyan: They wanted to see how stellar companions drive orbital misalignment. By combining Gaia data with adaptive optics, they found a high companion fraction.

Vera: Specifically, for mass ratios between 0.1 and 1, the companion fraction was sixty-two percent, which is way higher than field stars.

Jocelyn: And those companions really do mess with the orbits. Hot Jupiters with companions between 50 and 2,000 AU are twice as likely to be misaligned.

Subrahmanyan: It gets even more extreme with temperature. Misalignment jumps from five percent for cool hosts up to eighty percent for the hottest stars.

Vera: That suggests tidal realignment weakens as stellar temperatures increase, even while companions drive those high-eccentricity oscillations through the Kozai-Lidov mechanism.

Jocelyn: Speaking of stellar properties, a new pipeline was just applied to the Gaia GDR3 catalogue to hunt for flares.

Subrahmanyan: They identified over three thousand flares across nearly three thousand stars by looking for brightness increases and simultaneous blueing of the light.

Vera: That clever method helps distinguish real magnetic reconnection from noise, even with Gaia's sparse sampling. They even found twenty-nine hyper-flares.

Jocelyn: Most of those hyper-flares were in M dwarfs, providing a really solid foundation for future all-sky flare catalogues.

Subrahmanyan: It is amazing how these different scales of observation, from the first stars to local stellar flares, are finally starting to connect.

Vera: We are seeing a shift in dark energy research, moving from simple kinematic models toward complex interactions where dark matter and dark energy exchange energy.

Jocelyn: That coupling could mimic phantom crossing, but it leaves a specific imprint because only the dark matter feels that fifth force, leaving baryons alone.

Subrahmanyan: Exactly, and combining DESI data with CMB observations shows this interaction creates a degeneracy where neutrino mass scales with the coupling parameters.

Vera: It even causes dark matter mass to run, changing by up to 5.5 percent at recombination, which requires new adjustments for CMB distance calculations.

Jocelyn: Moving from cosmic scales to galaxies, topological data analysis of Simba simulations shows that AGN feedback reshapes large-scale structures in very specific ways.

Subrahmanyan: Right, persistence diagrams show that feedback affects the birth and death scales of loop-like features in satellite galaxies within quenched halos.

Vera: On a smaller scale, the GW231109 235456 signal might be an astrophysical neutron star merger, potentially showing a double Gaussian mass distribution.

Jocelyn: If it did result in a prompt collapse to a black hole, next-generation detectors could soon constrain tidal deformability for such stars within 10 percent.

Subrahmanyan: Speaking of large structures, the ELUCID project used hydrodynamic simulations to reconstruct the Coma cluster's assembly history quite successfully.

Vera: They recovered an intracluster light fraction between 12 and 23 percent, and linked the cluster's elongation to a merger occurring 0.64 billion years ago.

Jocelyn: It is amazing how these simulations can reproduce observed filaments and predict specific merger events at redshifts of 0.74 and 0.45.

Subrahmanyan: It really bridges the gap between what we see now and the unobservable history of how these massive structures were built.

Vera: That wraps up our deep dive for today. We will leave you with our lucky papers of the day.

Jocelyn: The Fate of Exomoons Around Hot Jupiters Most moons are destroyed during the migration process that creates hot Jupiters.

Subrahmanyan: Polarization Observations of a sample of Excited OH masers Researchers measured how magnetic fields affect light from gas clouds where stars are forming.

Vera: A Global Overview of Starobinsky Inflation beyond slow-roll with CMB-BAO data New cosmic data provides tighter constraints on the theory of how the universe expanded after the Big Bang.

Jocelyn: A Significant Dust Reservoir Uncovered with JWST in the Type Ic SN 1983V More Than 40 Years Post-Explosion The James Webb Space Telescope found a massive amount of dust around an old supernova remnant.

Subrahmanyan: Does HD 3167 Have Planets with Perpendicular Orbits? New observations suggest two planets in this system actually orbit on similar planes rather than perpendicular ones.

Vera: The rise and decline of a transient obscuration event in a moderately distant type-I quasar Astronomers watched a distant quasar's brightness change over 22 years due to passing gas clouds.

Jocelyn: Extreme Enrichment at Cosmic Dawn: Three FeII-Strong Quasars at z > 6 from the JWST Aether survey Some very early black holes were already surrounded by heavy elements just a short time after the Big Bang.

Subrahmanyan: A model to mini-quench early galaxies by balancing stellar feedback and gas accretion New models explain why some young galaxies stop making stars much earlier than expected.

Vera: Optical-NIR Multi-band Photometric Analysis and Characterization of Giant Exoplanets with CPI-C A new imaging method will help scientists measure the temperature and size of giant planets.

Jocelyn: Coronal Mass Ejections from Young Suns: An Observational View through the Solar-Stellar Connection Scientists are studying how massive solar flares and eruptions from young stars affect their planets.

Subrahmanyan: Rapid Dark Growth of Seed Black Holes in Self-Interacting Dark Matter Black holes might grow incredibly fast in the early universe by swallowing dark matter.

Vera: Reconstructing the Projected Dark Matter Field across 0.1-100 Mpc Scales from the SDSS Survey A new computer model can map out invisible dark matter using only visible galaxies.

Jocelyn: The swept-back multipolar magnetic field of neutron stars: Application to NICER MSP J0030+451 A more realistic model of magnetic fields helps explain the X-ray light seen from certain pulsars.

Subrahmanyan: The JWST Sub-Jupiters Survey: Direct Imaging Discovery of a Giant Planet and a Debris Disk Around the Young M-dwarf RX J0534.0-0221 The James Webb Space Telescope discovered a giant planet and a ring of dust around a small, young star.

Vera: Little Red Dots as a Transient Phase of Self-Interacting Dark Matter Assisted Black Hole Growth Tiny red galaxies might be short-lived stages where black holes grow rapidly by consuming dark matter.

Jocelyn: Delayed Methane Detection in 3I/ATLAS: GCR-Driven Subsurface Stratification and Interstellar Exposure Age Constraints Cosmic rays from our galaxy likely change the chemical layers of interstellar comets.

Subrahmanyan: Multi-Frequency Study of FRB20201124A with the uGMRT Rapid radio bursts from deep space show complex behavior across different frequencies.

Vera: Constraints on the Pop III Sky Surface Brightness from High-Redshift Caustic Transients in MACS0416 Scientists searched for the very first stars in the universe using gravitational lensing but found nothing.

Jocelyn: Water Cloud and Chemical Modulations in the Coldest Brown Dwarf Observations of a freezing brown dwarf suggest it has patchy water clouds in its atmosphere.

Subrahmanyan: A 32-day Quasi-periodic Modulation in the Post-peak Light Curve of the Superluminous Supernova SN 2018bsz A massive supernova shows a repeating pattern in its brightness every month.

Vera: Euclid: Galaxy cluster detection through the weak lensing effect - algorithm assessment and selection New software is being developed for the Euclid telescope to find galaxy clusters using gravity.

Jocelyn: Hydrodynamic Simulations of Eccentric Black Hole Encounters in AGN Discs Black holes moving on tilted paths are more likely to get captured by gas discs around massive galaxies.

Subrahmanyan: Systematic Effects of Hydrogen and Helium Atmosphere Mismatch on Radius Inference in PSR J0740+6620-like Synthetic NICER Data Assuming the wrong gas composition can lead to incorrect measurements of neutron star sizes.

Vera: Kinematics of the System of Young Open Clusters based on Gaia DR3 Data Researchers used new data to map how young groups of stars move through our galaxy.

Jocelyn: From observing strategies to velocity dispersion bias: forward modeling unresolved binaries in ultra-faint dwarf galaxies Unresolved pairs of stars can trick astronomers into thinking small galaxies are heavier than they really are.

Subrahmanyan: Daytime seeing variations in Paranal through a SHABAR system A new tool at the Paranal Observatory measures how much the atmosphere blurs light during the day.

Vera: A near-IR survey of luminous asymptotic giant branch stars in the satellites and stellar halo of M31 Astronomers used infrared light to find aging stars in the outskirts of our neighbor, Andromeda.

Jocelyn: A systematic search for long GRBs without supernovae: global properties and rate of events Some massive star explosions produce gamma-ray bursts without a bright supernova.

Subrahmanyan: Investigating the influence of the full-kinematics treatment for charged-current processes in binary neutron star mergers More detailed math shows that how neutrinos interact can change our predictions of what happens when neutron stars collide.

Vera: Half-wave-plate non idealities propagated to component separated CMB B-mode measurements Imperfect hardware in telescopes could bias our measurements of the earliest signals from the Big Bang.

Jocelyn: Evolution and mergers of eccentric white dwarf binaries encountering intermediate-mass black holes Passing near a massive black hole can speed up the process of two white dwarfs merging.

Subrahmanyan: Lattice simulations of scalar-induced gravitational waves from inflation Simulations show that certain types of inflation could create detectable ripples in spacetime.

Vera: Weak Lensing Mass Calibration of the ACT DR5 Galaxy Clusters with the DES Year 3 Weak Lensing Data Researchers used gravity to more accurately weigh large clusters of galaxies.

Jocelyn: The Sound of the Universe: A Resonant Gravitational Instability Driven by Baryon-Dark Matter Relative Drift Moving dark matter can trigger waves in gas that help shape everything from stars to galaxy clusters.

Subrahmanyan: Constraints on the Hot Circumgalactic Medium around Nearby L stars from SRG/eROSITA All Sky Survey X-ray data confirms that many galaxies are surrounded by a massive, hot cloud of gas.

Vera: The T-GEX project. II. Chrono-chemo-dynamic signatures of UV-bright FGK stars Certain bright stars show chemical patterns suggesting they were born in violent supernova explosions.

Jocelyn: Characterizing the hierarchical structure of filaments I. On the origin of the length-mass scaling relation Simulations show that gas clouds form long, thin filaments through a process similar to a random walk.

Subrahmanyan: Probing the sound speed and clustering of dark energy New observations are beginning to test whether dark energy is a constant or something that changes over time.

Vera: GraphShed: A Data-derived Graph-based waterShed Group Finder A new computer method identifies groups of galaxies more accurately by looking at how they are connected.

Jocelyn: Monitoring the power spectrum of magnetic field fluctuations across the simulated intracluster medium Magnetic fields in galaxy clusters vary depending on how much the gas is swirling and clumping.

Subrahmanyan: Polarization of Synchrotron Emission from Rotation Powered Pulsars New models help explain how light is polarized as it escapes from the intense magnetic fields of pulsars.

Vera: Stellar companions sculpt hot Jupiter formation and spin-orbit evolution Many hot Jupiters may have their orbits tilted by the gravitational pull of a nearby companion star.

Jocelyn: Gaia method paper: an algorithm to detect flare events in Gaia time-series A new tool allows astronomers to find sudden stellar flares in massive datasets from the Gaia mission.

Subrahmanyan: Thermal Evolution of Lava Planets Across System Ages: Predictions for Hell of a Survey Models predict how rocky planets with molten surfaces might hold onto their atmospheres.

Vera: Fragmentation Dynamics of Pristine Interstellar Comets: An Exploratory Multi-Physics Simulation Study Simulations show that comets entering our solar system will likely shatter into many pieces.

Jocelyn: Development of an early warning method incorporating pre-supernova neutrino light curves New ways to analyze neutrino signals could give us a heads-up before a star explodes as a supernova.

Subrahmanyan: The Galactic centre G+0.633-0.0604 molecular cloud: A new astrochemical gold mine: II: Chemical richness This cloud in the center of our galaxy is an incredibly rich source for finding complex organic molecules.

Vera: Sensitivity of Nuclear Reaction Rates in X-ray Burst Models Uncertainties in nuclear physics make it difficult to perfectly model the bright flashes on neutron stars.

Jocelyn: Distinguishing Coupled Dark Matter Dark Energy from Kinematic Phantom Crossing New ways to measure how matter grows can help tell if dark energy is interacting with dark matter.

Subrahmanyan: Topological Signatures of AGN Feedback in the Simba Simulations Advanced math shows that black hole activity leaves unique structural fingerprints on how galaxies are distributed.

Vera: Analyzing GW231109 235456 and understanding its potential implications for population studies, nuclear physics, and multi-messenger astronomy A candidate signal from colliding neutron stars provides clues about the properties of dense matter.

Jocelyn: Honoring Paris Pi mi ' Legacy: Uniform Astrophysical Properties of 14 Understudied Clusters from Gaia DR3 Researchers used high-precision data to update our knowledge of several long-ignored star clusters.

Subrahmanyan: SPHEREx 3.3 Micron Aromatic Emission in the Magellanic Clouds: Separating Dust Column, Excitation, and Environmental Suppression Dust in active regions of galaxies seems to be processed differently than dust in quiet areas.

Vera: Thioacetaldehyde (CH3CHS) on interstellar ices: a key molecule to unravel two chemical dichotomies in the ISM Chemical reactions on ice grains explain why certain sulfur molecules are common while others are rare.

Jocelyn: Coupled Orbital and Interior Evolution of Sub-Neptunes New models suggest that the number of sub-Neptune planets changes significantly as they age and move closer to their stars.

Subrahmanyan: On the Constancy of Binary Star Fractions in Local Star Clusters The fraction of stars living in pairs seems to stay remarkably steady throughout nearby star clusters.

Vera: Early steps in the hierarchical assembly of a Milky Way-mass galaxy 1 Gyr after the Big Bang Observations show that merging galaxies can grow much faster due to intense bursts of star formation.

Jocelyn: Predictions on the abundance of primordial black holes: results from the SMILE VLBI milli-lensing sample New techniques could soon allow us to search for black holes formed in the very early universe.

Subrahmanyan: The extreme Disturbed Galaxy Cluster Sample (eDGeS): Spectroscopy and Dynamical Analysis of the eROSITA-Selected Merging Galaxy Cluster Candidate 1eRASS J025859.4-193727 A massive cluster is likely undergoing a violent collision with another group of galaxies.

Vera: The 2025.6 X-ray Minimum of Eta Carinae Observations show that the dimming of this famous star is caused by material falling onto its companion rather than an eclipse.

Jocelyn: That is all for today. Thanks for listening.

Subrahmanyan: See you next time.

Vera: Goodbye.of course! Here are some more interesting research papers to check out:

Jocelyn: The Fate of Exomoons Around Hot Jupiters Most moons are destroyed during the migration process that creates hot Jupiters.

Subrahmanyan: Polarization Observations of a sample of Excited OH masers Researchers measured how magnetic fields affect light from gas clouds where stars are forming.

Vera: A Global Overview of Starobinsky Inflation beyond slow-roll with CMB-BAO data New cosmic data provides tighter constraints on the theory of how the universe expanded after the Big Bang.

Jocelyn: A Significant Dust Reservoir Uncovered with JWST in the Type Ic SN 1983V More Than 40 Years Post-Explosion The James Webb Space Telescope found a massive amount of dust around an old supernova remnant.

Subrahmanyan: Does HD 3167 Have Planets with Perpendicular Orbits? New observations suggest two planets in this system actually orbit on similar planes rather than perpendicular ones.

Vera: The rise and decline of a transient obscuration event in a moderately distant type-I quasar Astronomers watched a distant quasar's brightness change over 22 years due to passing gas clouds.

Jocelyn: Extreme Enrichment at Cosmic Dawn: Three FeII-Strong Quasars at z > 6 from the JWST Aether survey Some very early black holes were already surrounded by heavy elements just a short time after the Big Bang.

Subrahmanyan: A model to mini-quench early galaxies by balancing stellar feedback and gas accretion New models explain why some young galaxies stop making stars much earlier than expected.

Vera: Optical-NIR Multi-band Photometric Analysis and Characterization of Giant Exoplanets with CPI-C A new imaging method will help scientists measure the temperature and size of giant planets.

Jocelyn: Coronal Mass Ejections from Young Suns: An Observational View through the Solar-Stellar Connection Scientists are studying how massive solar flares and eruptions from young stars affect their planets.

Subrahmanyan: Rapid Dark Growth of Seed Black Holes in Self-Interacting Dark Matter Black holes might grow incredibly fast in the early universe by swallowing dark matter.

Vera: Reconstructing the Projected Dark Matter Field across 0.1-100 Mpc Scales from the SDSS Survey A new computer model can map out invisible dark matter using only visible galaxies.

Jocelyn: The swept-back multipolar magnetic field of neutron stars: Application to NICER MSP J0030+451 A more realistic model of magnetic fields helps explain the X-ray light seen from certain pulsars.

Subrahmanyan: The JWST Sub-Jupiters Survey: Direct Imaging Discovery of a Giant Planet and a Debris Disk Around the Young M-dwarf RX J0534.0-0221 The James Webb Space Telescope discovered a giant planet and a ring of dust around a small, young star.

Vera: Little Red Dots as a Transient Phase of Self-Interacting Dark Matter Assisted Black Hole Growth Tiny red galaxies might be short-lived stages where black holes grow rapidly by consuming dark matter.

Jocelyn: Delayed Methane Detection in 3I/ATLAS: GCR-Driven Subsurface Stratification and Interstellar Exposure Age Constraints Cosmic rays from our galaxy likely change the chemical layers of interstellar comets.

Subrahmanyan: Multi-Frequency Study of FRB20201124A with the uGMRT Rapid radio bursts from deep space show complex behavior across different frequencies.

Vera: Constraints on the Pop III Sky Surface Brightness from High-Redshift Caustic Transients in MACS0416 Scientists searched for the very first stars in the universe using gravitational lensing but found nothing.

Jocelyn: Water Cloud and Chemical Modulations in the Coldest Brown Dwarf Observations of a freezing brown dwarf suggest it has patchy water clouds in its atmosphere.

Subrahmanyan: A 32-day Quasi-periodic Modulation in the Post-peak Light Curve of the Superluminous Supernova SN 2018bsz A massive supernova shows a repeating pattern in its brightness every month.

Vera: Euclid: Galaxy cluster detection through the weak lensing effect - algorithm assessment and selection New software is being developed for the Euclid telescope to find galaxy clusters using gravity.

Jocelyn: Hydrodynamic Simulations of Eccentric Black Hole Encounters in AGN Discs Black holes moving on tilted paths are more likely to get captured by gas discs around massive galaxies.

Subrahmanyan: Systematic Effects of Hydrogen and Helium Atmosphere Mismatch on Radius Inference in PSR J0740+6620-like Synthetic NICER Data Assuming the wrong gas composition can lead to incorrect measurements of neutron star sizes.

Vera: Kinematics of the System of Young Open Clusters based on Gaia DR3 Data Researchers used new data to map how young groups of stars move through our galaxy.

Jocelyn: From observing strategies to velocity dispersion bias: forward modeling unresolved binaries in ultra-faint dwarf galaxies Unresolved pairs of stars can trick astronomers into thinking small galaxies are heavier than they really are.

Subrahmanyan: Daytime seeing variations in Paranal through a SHABAR system A new tool at the Paranal Observatory measures how much the atmosphere blurs light during the day.

Vera: A near-IR survey of luminous asymptotic giant branch stars in the satellites and stellar halo of M31 Astronomers used infrared light to find aging stars in the outskirts of our neighbor, Andromeda.

Jocelyn: A systematic search for long GRBs without supernovae: global properties and rate of events Some massive star explosions produce gamma-ray bursts without a bright supernova.

Subrahmanyan: Investigating the influence of the full-kinematics treatment for charged-current processes in binary neutron star mergers More detailed math shows that how neutrinos interact can change our predictions of what happens when neutron stars collide.

Vera: Half-wave-plate non idealities propagated to component separated CMB B-mode measurements Imperfect hardware in telescopes could bias our measurements of the earliest signals from the Big Bang.

Jocelyn: Evolution and mergers of eccentric white dwarf binaries encountering intermediate-mass black holes Passing near a massive black hole can speed up the process of two white dwarfs merging.

Subrahmanyan: Lattice simulations of scalar-induced gravitational waves from inflation Simulations show that certain types of inflation could create detectable ripples in spacetime.

Vera: Weak Lensing Mass Calibration of the ACT DR5 Galaxy Clusters with the DES Year 3 Weak Lensing Data Researchers used gravity to more accurately weigh large clusters of galaxies.

Jocelyn: The Sound of the Universe: A Resonant Gravitational Instability Driven by Baryon-Dark Matter Relative Drift Moving dark matter can trigger waves in gas that help shape everything from stars to galaxy clusters.

Subrahmanyan: Constraints on the Hot Circumgalactic Medium around Nearby L stars from SRG/eROSITA All Sky Survey X-ray data confirms that many galaxies are surrounded by a massive, hot cloud of gas.

Vera: The T-GEX project. II. Chrono-chemo-dynamic signatures of UV-bright FGK stars Certain bright stars show chemical patterns suggesting they were born in violent supernova explosions.

Jocelyn: Characterizing the hierarchical structure of filaments I. On the origin of the length-mass scaling relation Simulations show that gas clouds form long, thin filaments through a process similar to a random walk.

Subrahmanyan: Probing the sound speed and clustering of dark energy New observations are beginning to test whether dark energy is a constant or something that changes over time.

Vera: GraphShed: A Data-derived Graph-based waterShed Group Finder A new computer method identifies groups of galaxies more accurately by looking at how they are connected.

Jocelyn: Monitoring the power spectrum of magnetic field fluctuations across the simulated intracluster medium Magnetic fields in galaxy clusters vary depending on how much the gas is swirling and clumping.

Subrahmanyan: Polarization of Synchrotron Emission from Rotation Powered Pulsars New models help explain how light is polarized as it escapes from the intense magnetic fields of pulsars.

Vera: Stellar companions sculpt hot Jupiter formation and spin-orbit evolution Many "hot Jupiters" may have their orbits tilted by the gravitational pull of a nearby companion star.

Jocelyn: Gaia method paper: an algorithm to detect flare events in Gaia time-series A new tool allows astronomers to find sudden stellar flares in massive datasets from the Gaia mission.

Subrahmanyan: Thermal Evolution of Lava Planets Across System Ages: Predictions for Hell of a Survey Models predict how rocky planets with molten surfaces might hold onto their atmospheres.

Vera: Fragmentation Dynamics of Pristine Interstellar Comets: An Exploratory Multi-Physics Simulation Study Simulations show that comets entering our solar system will likely shatter into many pieces.

Jocelyn: Development of an early warning method incorporating pre-supernova neutrino light curves New ways to analyze neutrino signals could give us a heads-up before a star explodes as a supernova.

Subrahmanyan: The Galactic centre G+0.633-0.0604 molecular cloud: A new astrochemical gold mine: II: Chemical richness This cloud in the center of our galaxy is an incredibly rich source for finding complex organic molecules.

Vera: Sensitivity of Nuclear Reaction Rates in X-ray Burst Models Uncertainties in nuclear physics make it difficult to perfectly model the bright flashes on neutron stars.

Jocelyn: Distinguishing Coupled Dark Matter Dark Energy from Kinematic Phantom Crossing New ways to measure how matter grows can help tell if dark energy is interacting with dark matter.

Subrahmanyan: Topological Signatures of AGN Feedback in the Simba Simulations Advanced math shows that black hole activity leaves unique structural fingerprints on how galaxies are distributed.

Vera: Analyzing GW231109 235456 and understanding its potential implications for population studies, nuclear physics, and multi-messenger astronomy A candidate signal from colliding neutron stars provides clues about the properties of dense matter.

Jocelyn: Honoring Paris Pi mi ' Legacy: Uniform Astrophysical Properties of 14 Understudied Clusters from Gaia DR3 Researchers used high-precision data to update our knowledge of several long-ignored star clusters.

Subrahmanyan: SPHEREx 3.3 Micron Aromatic Emission in the Magellanic Clouds: Separating Dust Column, Excitation, and Environmental Suppression Dust in active regions of galaxies seems to be processed differently than dust in quiet areas.

Vera: Thioacetaldehyde (CH3CHS) on interstellar ices: a key molecule to unravel two chemical dichotomies in the ISM Chemical reactions on ice grains explain why certain sulfur molecules are common while others are rare.

Jocelyn: Coupled Orbital and Interior Evolution of Sub-Neptunes New models suggest that the number of sub-Neptune planets changes significantly as they age and move closer to their stars.

Subrahmanyan: On the Constancy of Binary Star Fractions in Local Star Clusters The fraction of stars living in pairs seems to stay remarkably steady throughout nearby star clusters.

Vera: Early steps in the hierarchical assembly of a Milky Way-mass galaxy 1 Gyr after the Big Bang Observations show that merging galaxies can grow much faster due to intense bursts of star formation.

Jocelyn: Predictions on the abundance of primordial black holes: results from the SMILE VLBI milli-lensing sample New techniques could soon allow us to search for black holes formed in the very early universe.

Subrahmanyan: The extreme Disturbed Galaxy Cluster Sample (eDGeS): Spectroscopy and Dynamical Analysis of the eROSITA-Selected Merging Galaxy Cluster Candidate 1eRASS J025859.4-193727 A massive cluster is likely undergoing a violent collision with another group of galaxies.

Vera: The 2025.6 X-ray Minimum of Eta Carinae Observations show that the dimming of this famous star is caused by material falling onto its companion rather than an eclipse.

Jocelyn: That's all for today. Thanks for listening.

Subrahmanyan: See you next time.

Vera: Goodbye.