Jason Lee: https://jasonlee17.github.io
Ryan Camilleri: https://smp.uq.edu.au/profile/13102/ryan-camilleri
Tamara Davis: https://people.smp.uq.edu.au/TamaraDavis
Cosmology Paper: arXiv 2609.05053
Host mass paper: arXiv 2609.05321
Chapters:
[0:00]: Intro
[0:56]: Review of Results
[11:14]: Background and Motivation
[25:20]: Analysis Details of New Paper
[42:08]: Cosmology Results
[58:36]: The Future
A discussion on the current observational status of single scalar field models of dark energy.
Carlos Garcia-Garcia: inspirehep.net/authors/1763622
William Wolf: inspirehep.net/authors/1969673
Paper: arxiv.org/abs/2607.07777
Chapter Links:
29-July-2026 Cosmology Talks episode – Probing Low Mass Dark Matter Halos with LISA – hosted by Shaun Hotchkiss with guest speakers Han Gil Choi, Juan Urrutia, and Miguel Zumalacárregui discussing their new paper https://arxiv.org/abs/2607.11887.
June 12, 2026 Cosmology Talks episode hosted by Shaun Hotchkiss, with guest speaker Swagat Saurav Mishra, Senior Researcher at the Cosmology, Gravity and Astroparticle Physics Group, Centre for Theoretical Physics of the Universe (CTPU-CGA), affiliated with the Institute for Basic Science (IBS) in Daejeon (South Korea).
Papers:
[2605.27301] Effective Phantom Dark Energy: What Cosmological Reconstruction Does and Does Not Imply
[2507.07193] Braneworld Dark Energy in light of DESI DR2
Swagat’s website: A Physicist’s Action
Four members of the Dark Energy Survey Collaboration discuss the latest findings. This talk is based on these two papers on the arXiv:
Main talk content: [2503.06712] Dark Energy Survey: implications for cosmological expansion models from the final DES Baryon Acoustic Oscillation and Supernova data
Newly released paper: [2601.14864] Dark Energy Survey: DESI-Independent Angular BAO Measurement
The authors:
Jessie Muir
Juan Mena-Fernández
Santiago Avila
Maria Vincenzi
Can gravitational waves get gravitationally lensed? The first ever detection of this might have just happened. This is especially cool because if we could routinely measure lensing of gravitational waves, we could use that to measure all sorts of other important things like the Hubble constant and precision tests of gravity to name just two. One of the interesting things you will hear about in today’s talk is an improved modeling of the candidate lens. This better nails down the probability that the wave really was lensed and even more fun gives insight into what astrophysical things the source and lens could be. In today’s talk, we’re joined by Miguel Zumalacarregui from the Max Plank Institute for Gravitational Physics in Potsdam, Germany to tell us about his new paper.
Miguel: miguelzuma.github.io
Paper: arXiv: 2512.17631
Ligo-Virgo-Kagra analysis: arXiv: 2512.16347
Sankarshana Srinivasan tells us about his work building the framework to constrain (or detect!) modified gravity using upcoming surveys. Building on earlier work developing model independent modified gravity simulations, Shankar now shows how a clever transform (the BNT transform) is able to better isolate the weak-lensing kernel, meaning one can more cleanly cut out the fully messy non-linear scales without losing too much usable information. We’re all looking forward to the talk in 3-5 years’ time applying these methods to Euclid and LSST data!
Paper: arXiv: 2409.06569
Cosmology Talk on earlier work in this series by Dan Thomas: The first model independent cosmological simulations of modified gravity
Angus Wright, Benjamin Stölzner, Robert Reischke, Marika Asgari and Konrad Kuijken tell us about the final cosmology results from the Kilo Degree Survey (KiDS-Legacy). After exhaustive improvement of their analysis, and consistency tests, and a six month wander in the B-Mode wilderness they emerge with no S8 tension at all.
Angus: anguswright.github.io
Benjamin: inspirehep.net/authors/1944983
Robert: inspirehep.net/authors/2219647
Marika: ncl.ac.uk/…marikaasgari.html
Konrad: universiteitleiden.nl/…koen-kuijken
KiDS: kids.strw.leidenuniv.nl
Papers:
2503.19442
2503.19441
2503.19440
Teresa Matamoro, Mike Walmsley and Phil Holloway tell us about three key areas Euclid has shed a scientific light on in their Q1 data release today. These are active galactic nuclei, galaxy morphology and strong lensing.
Teresa: linkedin/teresamatamoro…
Mike: walmsley.dev
Phil: physics.ox.ac.uk/…
ESA details on the Q1 release: cosmos.esa.int/…
Euclid Consortium details on the Q1 release: euclid-ec.org…
Papers:
[2503.15320] Euclid Quick Data Release (Q1). The active galaxies of Euclid
The space observatory Euclid is producing and sharing results. In this video Guadalupe Cañas-Herrera and Hervé Aussel tell us about Euclid, its science goals and the Q1 data set they have released today (19-Mar-2025).
Guadalupe: gcanasherrera.com
Hervé: inspirehep.net/authors/1038805
ESA details on the Q1 release: cosmos.esa.int/…
Euclid Consortium details on the Q1 release: euclid-ec.org…
Papers:
[2503.15302] Euclid Quick Data Release (Q1) – Data release overview
Cosmology Talks 