Ryan Keeley
@ryankeeley.bsky.social
Astroparticle Physicist / Cosmologist
Lecturer at UC Irvine
Associate Member of the CGWU https://gwuniverse.snu.ac.kr/people/associate-members
https://rekeeley.github.io
Lecturer at UC Irvine
Associate Member of the CGWU https://gwuniverse.snu.ac.kr/people/associate-members
https://rekeeley.github.io
Reposted by Ryan Keeley
Some have argued to me strongly that even if Loeb is wrong, he’s getting people interested in 3I/ATLAS and that’s a good thing for science.
But Loeb isn't just wrong, he's recklessly following an old playbook that got 39 people killed in 1997.
sites.psu.edu/astrowright/...
But Loeb isn't just wrong, he's recklessly following an old playbook that got 39 people killed in 1997.
sites.psu.edu/astrowright/...
Loeb’s Behavior is Reckless
I’ve largely ignored Loeb for the past few weeks. When he started in on his 3I/ATLAS thing, there were plenty of mainstream media outlets willing to give his claims a wide and credulous platform, and ...
sites.psu.edu
December 7, 2025 at 5:52 PM
Some have argued to me strongly that even if Loeb is wrong, he’s getting people interested in 3I/ATLAS and that’s a good thing for science.
But Loeb isn't just wrong, he's recklessly following an old playbook that got 39 people killed in 1997.
sites.psu.edu/astrowright/...
But Loeb isn't just wrong, he's recklessly following an old playbook that got 39 people killed in 1997.
sites.psu.edu/astrowright/...
Reposted by Ryan Keeley
Meh. As shown in arxiv.org/abs/2503.14743, you can use an even more general non-parametric Gaussian process regression, and if you think the result of that is consistent with w=-1 LCDM then we should have a discussion ...
April 2, 2025 at 9:12 AM
Meh. As shown in arxiv.org/abs/2503.14743, you can use an even more general non-parametric Gaussian process regression, and if you think the result of that is consistent with w=-1 LCDM then we should have a discussion ...
Reposted by Ryan Keeley
Paper Day! Here I’m testing the DESI preference for evolving DE using a different parametrization, Transitional Dark Energy. The goal of the paper is an in-depth investigation into why the DESI data prefer evolving DE over LCDM arxiv.org/abs/2502.12667
The Preference for Evolving Dark Energy from Cosmological Distance Measurements and Possible Signatures in the Growth Rate of Perturbations
In this study, we use a flexible parametrization of the equation of state of dark energy to explore its possible evolution with datasets from the Dark Energy Spectroscopic Instrument (DESI), Planck co...
arxiv.org
February 19, 2025 at 6:22 AM
Paper Day! Here I’m testing the DESI preference for evolving DE using a different parametrization, Transitional Dark Energy. The goal of the paper is an in-depth investigation into why the DESI data prefer evolving DE over LCDM arxiv.org/abs/2502.12667
Paper Day! Here I’m testing the DESI preference for evolving DE using a different parametrization, Transitional Dark Energy. The goal of the paper is an in-depth investigation into why the DESI data prefer evolving DE over LCDM arxiv.org/abs/2502.12667
The Preference for Evolving Dark Energy from Cosmological Distance Measurements and Possible Signatures in the Growth Rate of Perturbations
In this study, we use a flexible parametrization of the equation of state of dark energy to explore its possible evolution with datasets from the Dark Energy Spectroscopic Instrument (DESI), Planck co...
arxiv.org
February 19, 2025 at 6:22 AM
Paper Day! Here I’m testing the DESI preference for evolving DE using a different parametrization, Transitional Dark Energy. The goal of the paper is an in-depth investigation into why the DESI data prefer evolving DE over LCDM arxiv.org/abs/2502.12667
Reposted by Ryan Keeley
Paper Day! arxiv.org/abs/2405.01620 A good reason to finally post on this account
JWST Lensed quasar dark matter survey II: Strongest gravitational...
This is the second in a series of papers in which we use JWST MIRI multiband imaging to measure the warm dust emission in a sample of 31 multiply imaged quasars, to be used as a probe of the...
arxiv.org
May 6, 2024 at 1:36 AM
Paper Day! arxiv.org/abs/2405.01620 A good reason to finally post on this account
Paper Day! arxiv.org/abs/2405.01620 A good reason to finally post on this account
JWST Lensed quasar dark matter survey II: Strongest gravitational...
This is the second in a series of papers in which we use JWST MIRI multiband imaging to measure the warm dust emission in a sample of 31 multiply imaged quasars, to be used as a probe of the...
arxiv.org
May 6, 2024 at 1:36 AM
Paper Day! arxiv.org/abs/2405.01620 A good reason to finally post on this account