Tag: general relativity
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Cosmology’s first century
A guided tour of the Universe from Einstein to JWST It was a great pleasure to be invited to the Charlbury Beer Festival in June 2023 to give a talk in the culture tent. The topic I chose to discuss was gravity, and more specifically how our best theory of gravity, Einstein’s theory of general…
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Measuring line-of-sight shear with Einstein rings
Today I released a paper written in collaboration with Pierre Fleury, Julien Larena and Matteo Martinelli on how we can measure line-of-sight shear from Einstein rings. But what is line-of-sight shear, and why are we interested in measuring it in the first place? To answer these questions, let’s review the phenomenon of strong gravitational lensing.…
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The howling Universe
Before I moved from IFT to IPhT, I filmed a video all about what standard sirens are and why they’re useful for cosmology. The video is now on Youtube, in English with Spanish subtitles. Take a look!
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Thesis off-cuts: the ancient history of general relativity
I have recently been thinking a lot about what introductory and background material I want to include in my PhD thesis, as my self-imposed December deadline continues to hurtle towards me at an alarming speed. Concurrent with this thinking, I’ve also recently been enjoying a fantastic book called The Poincaré Conjecture by Donal O’Shea, all…
Natalie B. Hogg 