Kavli Affiliate: Debora Sijacki | First 5 Authors: Sophie Koudmani, Nicholas A. Henden, Debora Sijacki, , | Summary: Contrary to the standard lore, there is mounting observational evidence that feedback from active galactic nuclei (AGN) may also play a role at the low-mass end of the galaxy population. We investigate this using the cosmological simulation […]
Kavli Affiliate: Anthony Challinor | First 5 Authors: Antón Baleato Lizancos, Anthony Challinor, Julien Carron, , | Summary: Searches for the imprint of primordial gravitational waves in degree-scale CMB $B$-mode polarisation data must account for significant contamination from gravitational lensing. Fortunately, the lensing effects can be partially removed by combining high-resolution $E$-mode measurements with an […]
Kavli Affiliate: Martin Haehnelt | First 5 Authors: Eric J. Baxter, Lewis Weinberger, Martin Haehnelt, Vid Iršič, Girish Kulkarni | Summary: We explore a potential new probe of reionization: the cross-correlation of high-redshift galaxies with maps of the thermal Sunyaev-Zel’dovich (tSZ) effect. We consider two types of high redshift galaxies: Lyman break galaxies (LBGs) and […]
Kavli Affiliate: Anthony Challinor | First 5 Authors: Íñigo Zubeldia, Anthony Challinor, , , | Summary: CMB lensing is a promising, novel way to measure galaxy cluster masses that can be used, e.g., for mass calibration in galaxy cluster counts analyses. Understanding the statistics of the galaxy cluster mass observable obtained with such measurements is […]
Kavli Affiliate: Ulrich Sperhake | First 5 Authors: Roxana Rosca-Mead, Ulrich Sperhake, Christopher J. Moore, Michalis Agathos, Davide Gerosa | Summary: This paper provides an extended exploration of the inverse-chirp gravitational-wave signals from stellar collapse in massive scalar-tensor gravity reported in [Phys. Rev. Lett. {bf 119}, 201103]. We systematically explore the parameter space that characterizes […]
Kavli Affiliate: Anthony Lasenby | First 5 Authors: Kamran Javid, Will Handley, Mike Hobson, Anthony Lasenby, | Summary: We conduct a thorough analysis of the relationship between the out-of-sample performance and the Bayesian evidence (marginal likelihood) of Bayesian neural networks (BNNs), as well as looking at the performance of ensembles of BNNs, both using the […]
Kavli Affiliate: Anthony Challinor | First 5 Authors: Anirban Roy, Girish Kulkarni, P. Daniel Meerburg, Anthony Challinor, Carlo Baccigalupi | Summary: The search for primordial gravitational waves through the $B$-mode polarization pattern in the CMB is one of the major goals of current and future CMB experiments. Besides foregrounds, a potential hurdle in this search […]
Kavli Affiliate: George Efstathiou | First 5 Authors: George Efstathiou, Steven Gratton, , , | Summary: We revisit the observational constraints on spatial curvature following recent claims that the Planck data favour a closed Universe. We use a new and statistically powerful Planck likelihood to show that the Planck temperature and polarization spectra are consistent […]
Kavli Affiliate: R. G. McMahon | First 5 Authors: Estelle Pons, Richard G. McMahon, Manda Banerji, Sophie L. Reed, | Summary: We present XMM-Newton X-ray observations and analysis of three DES $z>6.5$ quasars (VDES J0020$-$3653 at $z=6.824$, VDES J0244$-$5008 at $z=6.724$ and VDES J0224$-$4711 at $z=6.526$) and six other quasars with $6.438 < z < […]
Kavli Affiliate: R. G. McMahon | First 5 Authors: Yiping Shu, Sergey E. Koposov, N. Wyn Evans, Vasily Belokurov, Richard G. McMahon | Summary: We present two catalogues of active galactic nucleus (AGN) candidates selected from the latest data of two all-sky surveys — Data Release 2 (DR2) of the emph{Gaia} mission and the unWISE […]