Planck 2018 results. I. Overview and the cosmological legacy of Planck

Kavli Affiliate: E. P. S. Shellard | First 5 Authors: Planck Collaboration, Y. Akrami, F. Arroja, M. Ashdown, J. Aumont | Summary: The European Space Agency’s Planck satellite, which was dedicated to studying the early Universe and its subsequent evolution, was launched on 14 May 2009. It scanned the microwave and submillimetre sky continuously between […]


Continue.. Planck 2018 results. I. Overview and the cosmological legacy of Planck

Model independent $H(z)$ reconstruction using the cosmic inverse distance ladder

Kavli Affiliate: George Efstathiou | First 5 Authors: Pablo Lemos, Elizabeth Lee, George Efstathiou, Steven Gratton, | Summary: Recent distance ladder determinations of the Hubble constant $H_0$ disagree at about the $3.5sigma$ level with the value determined from Planck measurements of the cosmic microwave background (CMB) assuming a $Lambda$CDM cosmology. This discrepancy has prompted speculation […]


Continue.. Model independent $H(z)$ reconstruction using the cosmic inverse distance ladder

Weak-Lensing Mass Calibration of ACTPol Sunyaev-Zel’dovich Clusters with the Hyper Suprime-Cam Survey

Kavli Affiliate: Blake Sherwin | First 5 Authors: Hironao Miyatake, Nicholas Battaglia, Matt Hilton, Elinor Medezinski, Atsushi J. Nishizawa | Summary: We present weak-lensing measurements using the first-year data from the Hyper Suprime-Cam Strategic Survey Program on the Subaru telescope for eight galaxy clusters selected through their thermal Sunyaev-Zel’dovich (SZ) signal measured at 148 GHz […]


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nestcheck: diagnostic tests for nested sampling calculations

Kavli Affiliate: Anthony Lasenby | First 5 Authors: Edward Higson, Will Handley, Mike Hobson, Anthony Lasenby, | Summary: Nested sampling is an increasingly popular technique for Bayesian computation, in particular for multimodal, degenerate problems of moderate to high dimensionality. Without appropriate settings, however, nested sampling software may fail to explore such posteriors correctly; for example […]


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Gravitationally Lensed Quasars in Gaia: II. Discovery of 24 Lensed Quasars

Kavli Affiliate: R. G. McMahon | First 5 Authors: Cameron A. Lemon, Matthew W. Auger, Richard G. McMahon, Fernanda Ostrovski, | Summary: We report the discovery, spectroscopic confirmation and preliminary characterisation of 24 gravitationally lensed quasars identified using Gaia observations. Candidates were selected in the Pan-STARRS footprint with quasar-like WISE colours or as photometric quasars […]


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Estimating the Mass of the Milky Way Using the Ensemble of Classical Satellite Galaxies

Kavli Affiliate: Kaisey Mandel | First 5 Authors: Ekta Patel, Gurtina Besla, Kaisey Mandel, Sangmo Tony Sohn, | Summary: High precision proper motion (PM) measurements are available for approximately 20% of all known dwarf satellite galaxies of the Milky Way (MW). Here we extend the Bayesian framework of Patel et al. (2017b) to include all […]


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A Census of the LyC Photons that Form the UV Background During Reionization

Kavli Affiliate: Martin Haehnelt | First 5 Authors: Harley Katz, Taysun Kimm, Martin Haehnelt, Debora Sijacki, Joakim Rosdahl | Summary: We present a new, on-the-fly photon flux and absorption tracer algorithm designed to directly measure the contribution of different source populations to the metagalactic UV background and to the ionisation fraction of gas in the […]


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The SPHINX Cosmological Simulations of the First Billion Years: the Impact of Binary Stars on Reionization

Kavli Affiliate: Martin Haehnelt | First 5 Authors: Joakim Rosdahl, Harley Katz, Jeremy Blaizot, Taysun Kimm, Leo Michel-Dansac | Summary: We present the SPHINX suite of cosmological adaptive mesh refinement simulations, the first radiation-hydrodynamical simulations to simultaneously capture large-scale reionization and the escape of ionizing radiation from thousands of resolved galaxies. Our $5$ and $10$ […]


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Impact of Lyman alpha pressure on metal-poor dwarf galaxies

Kavli Affiliate: Martin Haehnelt | First 5 Authors: Taysun Kimm, Martin Haehnelt, Jeremy Blaizot, Harley Katz, Leo Michel-Dansac | Summary: Understanding the origin of strong galactic outflows and the suppression of star formation in dwarf galaxies is a key problem in galaxy formation. Using a set of radiation-hydrodynamic simulations of an isolated dwarf galaxy embedded […]


Continue.. Impact of Lyman alpha pressure on metal-poor dwarf galaxies