klaurent – Page 5 – Kavli Institute Pre-Print Publications

The GOLIATH Survey: OVI Absorption Reveals CGM Evolution through the Starburst-to-Quiescent Transition in Massive Galaxies

Posted by klaurent July 21, 2026July 27, 2026MIT, This Week: Astrophysics

Kavli Affiliate: Robert Simcoe | Summary:We present the GOLIATH survey (Galaxies, Outflows, and the Lifecycle of Immense, Active, Transforming Halos), a study of the multiphase circumgalactic medium (CGM) of massive ($langlelog M_star/M_odotrangle approx 11$), blue ($u-r < 1.65$) starburst and post-starburst galaxies at $langle zrangle approx$ 0.43. This work characterizes the warm-hot CGM through OVI […]

Continue..

Programmable Spin Conversion in Gradient Quantum Matter

Posted by klaurent July 21, 2026July 27, 2026This Week: Theoretical Physics, UCAS

Kavli Affiliate: Mamoru Matsuo | Summary:We propose programmable spin conversion in ultracold gases as gradient quantum matter, whose spin-dependent self-energy varies in space. Quantum kinetic theory shows that a dissipative self-energy curvature turns a force-driven scalar anisotropy into a spin source with mixed longitudinal-transverse momentum parity. Spin-resolved time-of-flight imaging can reveal a transverse spin texture […]

Continue..

An (in)complete NIRSpec census of Balmer absorption in Type 1 AGN — radiation-driven outflows in little red dots, quasars and variable stars

Posted by klaurent July 21, 2026July 27, 2026Cambridge, This Week: Astrophysics

Kavli Affiliate: Roberto Maiolino | Summary:A notable achievement of the first generation of JWST surveys was the discovery of an abundance of faint high-redshift ($z > 4$) broad-line active galactic nuclei (AGN) in the $L_rm bol < 10^45$~erg~s$^-1$ regime, previously only accessible at $z < 1$. The high prevalence of absorption features in their broad […]

Continue..

Wave2Body: Rethinking mmWave Human Pose Estimation as Radar-to-Body Token Translation

Posted by klaurent July 21, 2026July 27, 2026Caltech, This Week: Nanoscience

Kavli Affiliate: Wei Gao| Summary:Millimeter-wave (mmWave) radar enables privacy-friendly human sensing, but its sparse point clouds are physical measurements of view-dependent electromagnetic reflections and only indirectly characterize body articulation. Recovering a complete 3D pose from such partial, geometry-dependent observations is therefore under-constrained. Existing methods directly regress joint coordinates from paired radar-pose data, relying on the […]

Continue..

Data-driven Design of Metal-Organic Frameworks with Tunable Negative Thermal Expansion

Posted by klaurent July 21, 2026July 27, 2026Berkeley, This Week: Nanoscience

Kavli Affiliate: Kristin Persson | Summary:Materials with negative thermal expansion (NTE) are essential for applications requiring precise control of thermal expansion. Owing to their exceptional chemical tunability, flexible architectures, and low-energy lattice vibrations, metal-organic frameworks (MOFs) represent a rich platform for exploring NTE. However, uncovering the structural motifs that govern NTE across the enormous MOF […]

Continue..

First results for second generation SiSeRO CCD devices

Posted by klaurent July 20, 2026July 27, 2026MIT, This Week: Astrophysics

Kavli Affiliate: Marshall Bautz | Summary:The Astro2020 Decadal recommended the development of a suite of next generation astronomical observatories spanning the X-ray to near-IR spectrum. These programs require fast, extremely low noise detectors to fulfill their science goals. To address this technology gap, Stanford X-ray Astronomy and Observational Cosmology (XOC) group, MIT Lincoln Laboratory (MIT-LL), […]

Continue..

Coherent Magnons Driven by Photomodulated Anisotropy in Altermagnetic MnTe

Posted by klaurent July 20, 2026July 27, 2026Berkeley, This Week: Nanoscience

Kavli Affiliate: James Analytis| Summary:Manganese telluride ($textMnTe$) has recently emerged as a prototypical $g$-wave altermagnet, providing an ideal platform to investigate the non-equilibrium excitations of altermagnetic order. Here, we report simultaneous spatial mapping of the local equilibrium orientation of the Néel vector, $varphi_L(mathbfr)$, alongside the amplitude, $Δvarphi(mathbfr,t)$, and frequency, $Ω(mathbfr)$, of photoexcited spin waves. Based […]

Continue..

The black hole S-matrix in gauge/gravity duality

Posted by klaurent July 20, 2026July 27, 2026Chicago, This Week: Astrophysics

Kavli Affiliate: Emil Martinec | Summary:A variety of examples of gauge/gravity duality have a Coulomb branch for the gauge theory dynamics. We exploit this feature to construct an S-matrix, in which the initial state is a shell of branes converging on the origin of the Coulomb branch. In the gravitational dual, the shell of branes […]

Continue..

Star formation powers optical line emission from the CGM

Posted by klaurent July 20, 2026July 27, 2026Peking, This Week: Astrophysics

Kavli Affiliate: Luis Ho | Summary:Using integral field spectroscopy, we explore the disk-halo interface, or the inner circumgalactic medium (CGM), of individual galaxies by constructing and analyzing emission-line maps for a large sample (72) of normal, low-redshift galaxies spanning three orders of magnitude in stellar mass and four orders in star formation rate (SFR). We […]

Continue..

Probing the Cosmic Axion Background via Axion-Photon Conversion in Filaments

Posted by klaurent July 20, 2026July 27, 2026Chicago, This Week: Astrophysics

Kavli Affiliate: Gordan Krnjaic | Summary:The cosmic axion background (CaB) is a hypothetical population of relativistic axions produced in the early universe. If the CaB is produced from dark matter decays, the axions in this population can convert to photons in the magnetic fields of cosmological filaments, resulting in an isotropic gamma ray background flux. […]

Continue..