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 […]

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 […]

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 […]

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, […]

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 […]

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 […]

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 […]

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 […]

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Brant E. Robertson, Sandro Tacchella, Benjamin D. Johnson, Ryan Hausen, Adebusola B. Alabi | Summary: The dramatic first images with James Webb Space Telescope (JWST) demonstrated its power to provide unprecedented spatial detail for galaxies in the high-redshift universe. Here, we leverage the resolution and depth of […]

Kavli Affiliate: Blake Sherwin | First 5 Authors: Zack Li, Rui An, Vera Gluscevic, Kimberly K. Boddy, J. Richard Bond | Summary: Diverse astrophysical observations suggest the existence of cold dark matter that interacts only gravitationally with radiation and ordinary baryonic matter. Any nonzero coupling between dark matter and baryons would provide a significant step […]