Probing fundamental physics with ALMA2040 mm-wavelength observations of neutron stars

Posted by klaurent Peking

Kavli Affiliate: Lijing Shao | Summary:Bursty or (rotation-induced) pulsed coherent radio emission from pulsars, magnetars, and fast radio transients originates in some of the most extreme environments in the Universe. However, the exact physical mechanism behind the scenes remains poorly understood. ALMA2040 will allow for systematic exploration of the millimeter-wavelength spectral window for pulsars and […]


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Writability and the Pathway: A Controlled Study of Knowledge Injection into Addressed Memory

Posted by klaurent Caltech

Kavli Affiliate: Wei Gao| Summary:Addressed conditional memory provides a local surface for post-hoc knowledge injection, but a successful write need not transfer to a new question or preserve untargeted behavior. This study combines a controlled GPT-2 comparison with production-memory experiments on Qwen3.8-Flash-Next-FP8 and DeepSeek-V4.1-Flash. Newly initialized modules attached to frozen GPT-2 are tested in a […]


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Testing the inelastic dark matter interpretation of the LZ event with heavy-element experiments

Posted by klaurent Stanford

Kavli Affiliate: Peter Graham | Summary:We consider the inelastic dark matter interpretation of the recent 248 keV event observed by LZ and identify different experiments that could test it. Details of the underlying model and the ability of complementary experiments to test it depend significantly on the high-velocity tail of the dark matter distribution. We […]


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Disentangling geometry & growth in cosmic neutrino mass constraints: a more physical split and diagnostic

Posted by klaurent Stanford

Kavli Affiliate: W. L. Kimmy Wu | Summary:Recent cosmological data hint at a neutrino mass sum below the minimum value allowed by the neutrino mass oscillation experiments, with a preference for the opposite of massive neutrinos ("negative" neutrino masses). Since massive neutrinos impact the expansion history of the Universe, which in turn modifies the growth […]


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An Attenuation Bump at z=9.3: Probing Dust Diversity at Cosmic Dawn

Posted by klaurent Peking

Kavli Affiliate: Kohei Inayoshi | Summary:We report the identification of a UV attenuation bump in the Black Pearl, a galaxy at a spectroscopic redshift of 9.3335 observed with JWST/NIRSpec as part of the ZENITH and EMBER surveys. This is the highest-redshift UV bump reported to date, probing dust properties only approximately 500 Myr after the […]


Continue.. An Attenuation Bump at z=9.3: Probing Dust Diversity at Cosmic Dawn

Wandering intermediate-mass black holes and off-nuclear tidal disruption events from early star clusters

Posted by klaurent MIT

Kavli Affiliate: Mark Vogelsberger | Summary:Off-nuclear tidal disruption events (TDEs) reveal evidence for massive black holes outside galactic centers, but the origins of this wandering population remain uncertain. We investigate wandering intermediate-mass black holes (IMBHs) formed through runaway stellar collisions in dense, high-redshift star clusters and predict their TDE signatures across cosmic time. Our semi-analytic […]


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How Little Red Dots Turn Blue: Evolution of Kelvin-Helmholtz Contracting Black Hole Envelopes and Observational Diagnostics

Posted by klaurent Peking

Kavli Affiliate: Kohei Inayoshi | Summary:James Webb Space Telescope (JWST) observations have revealed compact, red-colored, broad-line emitters known as little red dots (LRDs), while a bluer counterpart population has been referred to as little blue dots (LBDs). Their physical connection remains unclear: they may represent different evolutionary stages of the same phenomenon, distinct populations, or […]


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A Misaligned Debris Disk relative to the Host Star CPD-72 2713 from JWST/NIRCam Imaging

Posted by klaurent Stanford

Kavli Affiliate: Bruce Macintosh | Summary:Observations of debris disks provide a valuable window to investigate the formation and evolution of planetary systems. We present high-contrast JWST/NIRCam observations of CPD-72 2713, a 24 Myr-old star that belongs to the $β$ Pic moving group. We obtained the first scattered-light images of the disk in both F210M and […]


Continue.. A Misaligned Debris Disk relative to the Host Star CPD-72 2713 from JWST/NIRCam Imaging

A Step-Like Transition Underlying the Life and Death of Galaxies

Posted by klaurent Peking

Kavli Affiliate: Luis Ho | Summary:How galaxies stop forming stars is a complex and central problem in astrophysics. Numerous physical mechanisms have been proposed, yet a simple, unified framework connecting these mechanisms remains lacking. Here, we derive a step-function quenching response from the fundamental principle of gas mass conservation, governed by the competition between gas-supply […]


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Optimal Design of Shaped Pupil Lyot Coronagraph for China’s Large Segmented Telescope

Posted by klaurent Peking

Kavli Affiliate: Feng Long| Summary: China’s next-generation large telescopes, such as the Expandable Aperture Segmented Telescope (EAST) and the Large Optical/Infrared Telescope (LOT), are being planned as flagship facilities for high-angular-resolution astronomy, including the direct imaging and characterization of exoplanetary systems (e.g., exoplanets, circumstellar disks). However, their segmented, centrally obscured apertures present significant challenges for […]


Continue.. Optimal Design of Shaped Pupil Lyot Coronagraph for China’s Large Segmented Telescope