https://www.bvillasen.com/home daily 1.0 2022-03-22 https://images.squarespace-cdn.com/content/v1/5fd312241143884777b072bb/1630606906775-TFF2Y1SZ4LM5S3VXI3D9/render_density_haline_4.png Home - Synthetic Lyman-alpha Forest From the simulations, I measure the neutral hydrogen density and the temperature and velocity of the gas from which I compute the Lyman-alpha transmitted flux. I compare the statistical properties of the simulated spectra to the observations to constrain models for the physics that determine the structure of the intergalactic medium. https://images.squarespace-cdn.com/content/v1/5fd312241143884777b072bb/1630606672585-1PQ5YJSK2G61PA8CFCF9/slice_temp_8_composite_black.png Home - Temperature of the IGM By running hundreds of high-resolution simulations varying the photoionization and photoheating rates from the radiation emitted by early galaxies and quasars, and comparing to the observational Lyman-alpha flux power spectrum, we are able to determine the ionization and temperature history of the intergalactic medium. https://images.squarespace-cdn.com/content/v1/5fd312241143884777b072bb/1630878977400-PHCBKPK2G2I8XYDKI9MR/fig_gas_density_wdm_black.png Home - Constraints on Warm Dark Matter From a massive grid of more than 1000 cosmological simulations, we constrain the warm dark matter particle mass by comparing to the observed small-scale power spectrum of the Lya forest https://images.squarespace-cdn.com/content/v1/5fd312241143884777b072bb/e79adbf5-050f-4d5b-877a-6899d5fa0ffc/Xnip2022-03-21_11-00-29.jpg Home - Simulated Telescope Images Realistic images that simulate the observations of next-generation facilities like the James Webb Space Telescope and the Nancy Grace Roman Space Telescope. https://www.bvillasen.com/cosmological-simulations daily 0.75 2022-03-21 https://www.bvillasen.com/about-me daily 0.75 2022-05-16 https://images.squarespace-cdn.com/content/v1/5fd312241143884777b072bb/1630880747501-UUW1KPLNA7I8BVGHODU5/2848528.jpeg About Me - Hello… I am a Mexican computational astrophysicist interested in developing high-performance software to simulate astrophysical phenomena and contribute to improving our understanding of the cosmos. My work has focused on simulating the large-scale structure of the universe and setting constraints on our physical models by comparing observational determinations to analogous simulated measurements. https://www.bvillasen.com/contact daily 0.75 2022-03-21 https://www.bvillasen.com/simulated-telescope-images daily 0.75 2022-03-22 https://images.squarespace-cdn.com/content/v1/5fd312241143884777b072bb/ad95123e-ffa4-48e7-993b-5ddf28363e8b/image_composite_scaled_4.png Simulated telescope images https://www.bvillasen.com/warm-dark-matter daily 0.75 2022-11-04 https://images.squarespace-cdn.com/content/v1/5fd312241143884777b072bb/ef91116f-fdf2-4a1d-8caf-d61da50f6e7e/slice_wdm_composite_black.png Warm Dark Matter https://www.bvillasen.com/volume-render daily 0.75 2022-05-16 https://www.bvillasen.com/thermal-history-of-the-igm daily 0.75 2022-03-21 https://images.squarespace-cdn.com/content/v1/5fd312241143884777b072bb/1630606672585-1PQ5YJSK2G61PA8CFCF9/slice_temp_8_composite_black.png Thermal History of the IGM https://images.squarespace-cdn.com/content/v1/5fd312241143884777b072bb/121106da-ea18-4829-b3c9-bf7f6143ec29/Xnip2022-03-20_20-54-33.jpg Thermal History of the IGM - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.bvillasen.com/synthetic-lya-forest daily 0.75 2022-03-21 https://images.squarespace-cdn.com/content/v1/5fd312241143884777b072bb/2931f016-451d-4e7c-9f3d-b6444cbcba8d/Xnip2022-03-20_20-46-48.jpg Synthetic Lya Forest - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5fd312241143884777b072bb/1630606906775-TFF2Y1SZ4LM5S3VXI3D9/render_density_haline_4.png Synthetic Lya Forest - Make it stand out Whatever it is, the way you tell your story online can make all the difference.