"The status and scientific promise of the Thirty Meter Telescope"
"Evidence for Photospheric Absorption Lines in the X-ray Spectrum of the Neutron Star in Puppis A"
Supermassive black holes, though tiny compared to their host galaxies, play a crucial role in shaping galaxy evolution. In this month’s KPL astronomy talk, Marie-Joëlle Gingras will explore how these cosmic beasts influence their surroundings through a process known as Active Galactic Nucleus feedback, regulating star formation and transforming galaxies over billions of years.
Raphael is a post doc at Carnegie Mellon University, working on the the clustering properties of dark matter on galactic scales, with a particular focus on the tidal evolution of dwarf spheroidal galaxies. He builds dynamical models to contrast observational data against competing theories of dark matter.
"Measuring and modelling galaxy intrinsic alignment"
Dr Danielle Leonard is a Lecturer at the School of Mathematics, Statistics and Physics at Newcastle University. Their research focuses on late-time observational cosmology, particularly weak lensing and photometric galaxy clustering. They work both on understanding systematic effects which impact weak gravitational lensing measurements such as intrinsic alignment and photometric redshift uncertainties, and on methods for best constraining beyond-standard cosmological models with observational data.
Join us at Astronomy on Tap to hear about baryon acoustic oscillations, dark energy, and the new results coming from the DESI collaboration, from WCA researchers James Morawetz and Sofia Chiarenza!
"Probing Gravity on Cosmological Scales: Theories and Parametrizations"
Carola Zanoletti is a PhD student in cosmology at Newcastle University. She is testing models that modify the background expansion and growth of structure in the universe. She received her master's degree at the University of Cambridge, studying discretization conditions on the perturbation equations for a palindromic universe model at the Institute of Astronomy
"2, 3, 4 point functions: GPU, some math, some data"
Zack Slepian is currently a tenured associate professor in the astronomy department at the University of Florida, and previous to that held Einstein and Chamberlain fellowships at Lawrence Berkeley National Laboratory after a PhD at Harvard with Daniel Eisenstein. His major focus has been measuring and using higher-order clustering statistics of galaxies in redshift surveys such as BOSS, DESI and Roman, including the first detection of Baryon Acoustic Oscillations in the galaxy 3-point function, and intriguing evidence for parity violation in the galaxy 4-point function
Astrophysics deals with structures of incredible sizes and scales. But what are the biggest things out there, and how big can something actually get? In this month’s KPL astronomy talk, Roan Haggar will speak about galaxy clusters, the largest objects in our Universe that are held together by gravity, discussing what clusters are made from and what we can learn by studying them.
"The separate universe approach in multifield inflation models"
Hugo Holland is a second year PhD student in Institut d'Astrophysique Spatiale in Orsay (just south of Paris). He works with Julien Grain on stochastic inflation and all things related. Before his PhD, Hugo graduated from Ecole Polytechnique in France and got his masters degree in theoretical physics at King's College London, where he worked on eternal inflation with Eleni Alexandra Kontou.