Unequal-mass boson-star binaries: Initial data and merger dynamics

Kavli Affiliate: Ulrich Sperhake | First 5 Authors: Tamara Evstafyeva, Ulrich Sperhake, Thomas Helfer, Robin Croft, Miren Radia | Summary: We present a generalization of the curative initial data construction derived for equal-mass compact binaries in Helfer {it et al} (2019 Phys. Rev. D 99 044046; 2022 Class. Quantum Grav. 39 074001) to arbitrary mass […]


Continue.. Unequal-mass boson-star binaries: Initial data and merger dynamics

Radiation from Global Topological Strings using Adaptive Mesh Refinement: Massive Modes

Kavli Affiliate: E. P. S. Shellard | First 5 Authors: Amelia Drew, E. P. S. Shellard, , , | Summary: We implement adaptive mesh refinement (AMR) simulations of global topological strings using the public code, GRChombo. We perform a quantitative investigation of massive radiation from single sinusoidally displaced string configurations, studying a range of string […]


Continue.. Radiation from Global Topological Strings using Adaptive Mesh Refinement: Massive Modes

The Pandora project. I: the impact of radiation and cosmic rays on baryonic and dark matter properties of dwarf galaxies

Kavli Affiliate: Debora Sijacki | First 5 Authors: Sergio Martin-Alvarez, Debora Sijacki, Martin G. Haehnelt, Marion Farcy, Yohan Dubois | Summary: Enshrouded in several well-known controversies, dwarf galaxies have been extensively studied to learn about the underlying cosmology, notwithstanding that physical processes regulating their properties are poorly understood. To shed light on these processes, we […]


Continue.. The Pandora project. I: the impact of radiation and cosmic rays on baryonic and dark matter properties of dwarf galaxies

First results from the JWST Early Release Science Program Q3D: Turbulent times in the life of a $z sim 3$ extremely red quasar revealed by NIRSpec IFU

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Dominika Wylezalek, Andrey Vayner, David S. N. Rupke, Nadia L. Zakamska, Sylvain Veilleux | Summary: Extremely red quasars, with bolometric luminosities exceeding $10^{47}$ erg s$^{-1}$, are a fascinating high-redshift population that is absent in the local universe. They are the best candidates for supermassive black holes accreting […]


Continue.. First results from the JWST Early Release Science Program Q3D: Turbulent times in the life of a $z sim 3$ extremely red quasar revealed by NIRSpec IFU

Two Modes of LyC Escape From Bursty Star Formation: Implications for [C II] Deficits and the Sources of Reionization

Kavli Affiliate: Martin Haehnelt | First 5 Authors: Harley Katz, Aayush Saxena, Joki Rosdahl, Taysun Kimm, Jeremy Blaizot | Summary: We use the SPHINX$^{20}$ cosmological radiation hydrodynamics simulation to study how Lyman Continuum (LyC) photons escape from galaxies and the observational signatures of this escape. We define two classes of LyC leaker: Bursty Leakers and […]


Continue.. Two Modes of LyC Escape From Bursty Star Formation: Implications for [C II] Deficits and the Sources of Reionization

Curvature and dynamical spacetimes: can we peer into the quantum regime?

Kavli Affiliate: Ulrich Sperhake | First 5 Authors: Vitor Cardoso, David Hilditch, Krinio Marouda, José Natário, Ulrich Sperhake | Summary: Stationary compact astrophysical objects such as black holes and neutron stars behave as classical systems from the gravitational point of view. Their (observable) curvature is everywhere "small". Here we investigate whether mergers of such objects, […]


Continue.. Curvature and dynamical spacetimes: can we peer into the quantum regime?

First Sample of H$α$+[O III] $λ$5007 Line Emitters at $z > 6$ through JWST/NIRCam Slitless Spectroscopy: Physical Properties and Line Luminosity Functions

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Fengwu Sun, Eiichi Egami, Nor Pirzkal, Marcia Rieke, Stefi Baum | Summary: We present a sample of four emission-line galaxies at $z=6.11-6.35$ that were serendipitously discovered using the commissioning data for the JWST/NIRCam wide-field slitless spectroscopy (WFSS) mode. One of them (at $z=6.11$) has been reported previously […]


Continue.. First Sample of H$α$+[O III] $λ$5007 Line Emitters at $z > 6$ through JWST/NIRCam Slitless Spectroscopy: Physical Properties and Line Luminosity Functions

CMB lensing with shear-only reconstruction on the full sky

Kavli Affiliate: Anthony Challinor | First 5 Authors: Frank J. Qu, Anthony Challinor, Blake D. Sherwin, , | Summary: Reconstruction of gravitational lensing effects in the CMB from current and upcoming surveys is still dominated by temperature anisotropies. Extragalactic foregrounds in temperature maps can induce significant biases in the lensing power spectrum obtained with the […]


Continue.. CMB lensing with shear-only reconstruction on the full sky

CMB lensing with shear-only reconstruction on the full sky

Kavli Affiliate: Anthony Challinor | First 5 Authors: Frank J. Qu, Anthony Challinor, Blake D. Sherwin, , | Summary: Reconstruction of gravitational lensing effects in the CMB from current and upcoming surveys is still dominated by temperature anisotropies. Extragalactic foregrounds in temperature maps can induce significant biases in the lensing power spectrum obtained with the […]


Continue.. CMB lensing with shear-only reconstruction on the full sky

Biases to primordial non-Gaussianity measurements from CMB secondary anisotropies

Kavli Affiliate: Anthony Challinor | First 5 Authors: William Coulton, Alexander Miranthis, Anthony Challinor, , | Summary: Our view of the last-scattering surface in the cosmic microwave background (CMB) is obscured by secondary anisotropies, sourced by scattering, extragalactic emission and gravitational processes between recombination and observation. Whilst it is established that non-Gaussianity from the correlation […]


Continue.. Biases to primordial non-Gaussianity measurements from CMB secondary anisotropies