A JWST View of Cosmic Star Formation from $zsim0$ to 9 with Hydrogen Recombination Lines in the COSMOS and GOODS-N fields

Posted by klaurent Peking

Kavli Affiliate: Linhua Jiang | Summary:We combine wide-area COSMOS-3D observations with deeper GOODS-N data from JWST/NIRCam F444W wide-field slitless spectroscopy to trace cosmic star formation over $zsim0$–9. The observations cover approximately $0.33~mathrmdeg^2$ in COSMOS and $60.9~mathrmarcmin^2$ in GOODS-N, with typical $3σ$ integrated line-flux limits of $3.2times10^-18$ and $1.04times10^-18~mathrmerg,s^-1,cm^-2$, respectively. The common $3.9$–$5.0,μ$m wavelength window probes […]


Continue.. A JWST View of Cosmic Star Formation from $zsim0$ to 9 with Hydrogen Recombination Lines in the COSMOS and GOODS-N fields

Transmission representation of the Josephson free energy beyond the short-junction limit

Posted by klaurent Delft

Kavli Affiliate: Anton Akhmerov | Summary:Beenakker’s formula, $U(varphi)-U(0)=Δsum_nbigl(1-sqrt1-τ_nsin^2(varphi/2)bigr)$, expresses the zero-temperature energy-phase relation of a short Josephson junction through its normal-state transmission eigenvalues. We generalize this transmission representation beyond the short-junction limit and express the phase-dependent free energy of a time-reversal-symmetric $s$-wave junction as a Matsubara sum over channels with frequency-dependent transmissions. The representation constrains […]


Continue.. Transmission representation of the Josephson free energy beyond the short-junction limit

Spinformation: do gravitational-wave events carry information beyond effective spins?

Posted by klaurent MIT

Kavli Affiliate: Salvatore Vitale | Summary:While the spin vectors of binary black holes offer insight into the astrophysical formation channels of these systems, individual spins are less precisely measured through gravitational-wave observations than the effective inspiral spin $χ_mathrmeff$ and the effective precession spin $χ_mathrmp$. Reducing to effective parameters discards information in the data, but how […]


Continue.. Spinformation: do gravitational-wave events carry information beyond effective spins?

EMRIs in Kerr Spacetime: The Role of Inclination Diffusion

Posted by klaurent MIT

Kavli Affiliate: Scott A. Hughes | Summary:Extreme mass ratio inspirals (EMRIs) are expected to be a major source of gravitational waves (GWs) for the future it Laser Interferometer Space Antenna (it LISA). An EMRI occurs when a compact object, driven by the emission of gravitational radiation, slowly inspirals into a massive black hole (MBH). The […]


Continue.. EMRIs in Kerr Spacetime: The Role of Inclination Diffusion

TNGC-SIDM I: Evolution of massive cluster mergers under the self-interacting dark matter paradigm

Posted by klaurent MIT

Kavli Affiliate: Mark Vogelsberger | Summary:Merging galaxy clusters provide an ideal laboratory for testing the self-interacting nature of dark matter. In this paper, we present a pilot study of magnetohydrodynamical cosmological zoom-in simulations of two cluster mergers selected from TNG-Cluster, with $M_rm 200c sim 9times10^14~M_odot$ and $M_rm 200csim 2times10^14~M_odot$. The simulations are performed with both […]


Continue.. TNGC-SIDM I: Evolution of massive cluster mergers under the self-interacting dark matter paradigm

Imaging Gate-Tunable Single-Layer Molecular Kagome Lattices

Posted by klaurent Berkeley

Kavli Affiliate: Michael Crommie | Summary:Kagome lattices provide a simple geometry for engineering electronic states that exhibit novel quantum behavior. In conventional kagome materials, however, the relevant states are often embedded in chemically complex three-dimensional crystals and are difficult to isolate or tune. Molecule-based kagome networks offer structural precision and tunability, but have largely been […]


Continue.. Imaging Gate-Tunable Single-Layer Molecular Kagome Lattices

EDGE-INFERNO: The chemical signatures of assembly history in reionization fossils

Posted by klaurent Chicago

Kavli Affiliate: Alexander Ji | Summary:In galaxies, stellar populations represent a superposition of both in situ and accreted components, tracing internal chemical evolution as well as the histories of merged satellites. We investigate how assembly history shapes the chemical properties of present-day stellar populations in low-mass dwarf galaxies. We analyze a suite of EDGE-INFERNO star-by-star […]


Continue.. EDGE-INFERNO: The chemical signatures of assembly history in reionization fossils

Mergers may not be the main channel for galaxy stellar mass growth at redshift $zgtrsim5$: Predictions from cosmological hierarchical models and simulations

Posted by klaurent Peking

Kavli Affiliate: Yingjie Peng | Summary:Mergers are a crucial channel of galaxy growth, but their role relative to star formation remains uncertain at high redshift. Here we investigate merger rates and merger-driven stellar mass assembly for galaxies with stellar mass $M_star gtrsim 10^8 , rm M_odot$ at $zsimeq 5-11$, by combining complementary theoretical approaches within […]


Continue.. Mergers may not be the main channel for galaxy stellar mass growth at redshift $zgtrsim5$: Predictions from cosmological hierarchical models and simulations