The Atacama Cosmology Telescope: A measurement of galaxy cluster temperatures through relativistic corrections to the thermal Sunyaev-Zeldovich effect

Kavli Affiliate: Blake Sherwin | First 5 Authors: William R. Coulton, Adriaan J. Duivenvoorden, Zachary Atkins, Nicholas Battaglia, Elia Stefano Battistelli | Summary: The high electron temperature in galaxy clusters ($>1,$keV or $>10^7,$K) leads to corrections at the level of a few percent in their thermal Sunyaev-Zeldovich effect signatures. Both the size and frequency dependence […]


Continue.. The Atacama Cosmology Telescope: A measurement of galaxy cluster temperatures through relativistic corrections to the thermal Sunyaev-Zeldovich effect

The abundance and nature of high-redshift quiescent galaxies from JADES spectroscopy and the FLAMINGO simulations

Kavli Affiliate: Roberto Maiolino | First 5 Authors: William M. Baker, Seunghwan Lim, Francesco D’Eugenio, Roberto Maiolino, Zhiyuan Ji | Summary: We use NIRSpec/MSA spectroscopy and NIRCam imaging to study a sample of 18 massive ($log; M_{*}/M_{odot} gt 10;$dex), central quiescent galaxies at $2leq z leq 5$ in the GOODS fields, to investigate their number […]


Continue.. The abundance and nature of high-redshift quiescent galaxies from JADES spectroscopy and the FLAMINGO simulations

GA-NIFS & EIGER: A merging quasar host at z=7 with an overmassive black hole

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Madeline A. Marshall, Minghao Yue, Anna-Christina Eilers, Jan Scholtz, Michele Perna | Summary: The James Webb Space Telescope is revolutionising our ability to understand the host galaxies and local environments of high-z quasars. Here we obtain a comprehensive understanding of the host galaxy of the z=7.08 quasar […]


Continue.. GA-NIFS & EIGER: A merging quasar host at z=7 with an overmassive black hole

The Atacama Cosmology Telescope DR6 and DESI: Structure growth measurements from the cross-correlation of DESI Legacy Imaging galaxies and CMB lensing from ACT DR6 and Planck PR4

Kavli Affiliate: Blake Sherwin | First 5 Authors: Frank J. Qu, Qianjun Hang, Gerrit Farren, Boris Bolliet, Jessica Nicole Aguilar | Summary: We measure the growth of cosmic density fluctuations on large scales and across the redshift range $0.3<z<0.8$ through the cross-correlation of the ACT DR6 CMB lensing map and galaxies from the DESI Legacy […]


Continue.. The Atacama Cosmology Telescope DR6 and DESI: Structure growth measurements from the cross-correlation of DESI Legacy Imaging galaxies and CMB lensing from ACT DR6 and Planck PR4

Age-dating early quiescent galaxies: high star-formation efficiency, but consistent with direct, higher-redshift observations

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Crispin Turner, Sandro Tacchella, Francesco D’Eugenio, Stefano Carniani, Mirko Curti | Summary: We present a detailed analysis of JWST/NIRSpec and NIRCam observations of ZF-UDS-7329, a massive, quiescent galaxy at redshift $z=3.2$, which has been put forward to challenge cosmology and galaxy formation physics. Our study extends previous […]


Continue.. Age-dating early quiescent galaxies: high star-formation efficiency, but consistent with direct, higher-redshift observations

Classification of radio backgrounds at cosmic dawn and 21-cm signal confirmation using neural networks

Kavli Affiliate: George Efstathiou | First 5 Authors: Sudipta Sikder, Anastasia Fialkov, Rennan Barkana, , | Summary: Several ongoing and upcoming radio telescopes aim to detect either the global 21-cm signal or the 21-cm power spectrum. The extragalactic radio background, as detected by ARCADE-2 and LWA-1, suggests a strong radio background from cosmic dawn, which […]


Continue.. Classification of radio backgrounds at cosmic dawn and 21-cm signal confirmation using neural networks

Increased Burstiness at High Redshift in Multi-Physics Models Combining Supernova Feedback, Radiative Transfer and Cosmic Rays

Kavli Affiliate: Debora Sijacki | First 5 Authors: Tibor Dome, Sergio Martin-Alvarez, Sandro Tacchella, Yuxuan Yuan, Debora Sijacki | Summary: We study star formation variability, or burstiness, as a method to constrain and compare different galaxy formation models at high redshift using the Azahar simulation suite. The models range from magneto-hydrodynamics with a magneto-thermo-turbulent prescription […]


Continue.. Increased Burstiness at High Redshift in Multi-Physics Models Combining Supernova Feedback, Radiative Transfer and Cosmic Rays

The eventful life of a luminous galaxy at z = 14: metal enrichment, feedback, and low gas fraction?

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Stefano Carniani, Francesco D’Eugenio, Xihan Ji, Eleonora Parlanti, Jan Scholtz | Summary: JADES-GS-z14-0 is the most distant spectroscopically confirmed galaxy yet, at $z>14$. With a UV magnitude of -20.81, it is one of the most luminous galaxies at cosmic dawn and its half-light radius of 260 pc […]


Continue.. The eventful life of a luminous galaxy at z = 14: metal enrichment, feedback, and low gas fraction?

Improved Halo Model Calibrations for Mixed Dark Matter Models of Ultralight Axions

Kavli Affiliate: George Efstathiou | First 5 Authors: Tibor Dome, Simon May, Alex LaguĂ«, David J. E. Marsh, Sarah Johnston | Summary: We study the implications of relaxing the requirement for ultralight axions to account for all dark matter in the Universe by examining mixed dark matter (MDM) cosmologies with axion fractions $f leq 0.3$ […]


Continue.. Improved Halo Model Calibrations for Mixed Dark Matter Models of Ultralight Axions

Improved Halo Model Calibrations for Mixed Dark Matter Models of Ultralight Axions

Kavli Affiliate: George Efstathiou | First 5 Authors: Tibor Dome, Simon May, Alex LaguĂ«, David J. E. Marsh, Sarah Johnston | Summary: We study the implications of relaxing the requirement for ultralight axions to account for all dark matter in the Universe by examining mixed dark matter (MDM) cosmologies with axion fractions $f leq 0.3$ […]


Continue.. Improved Halo Model Calibrations for Mixed Dark Matter Models of Ultralight Axions