61 citations
- McGill UniversityCA11 papers
- McMaster UniversityCA2 papers
- University of ZurichCH2 papers
- Centre National de la Recherche ScientifiqueFR1 paper
- École Normale Supérieure de LyonFR1 paper
- Institut d'Astrophysique de ParisFR1 paper
- Kavli Institute for Particle Astrophysics and CosmologyUS1 paper
- Max Planck Institute for AstrophysicsDE1 paper
- Max Planck Institute for Extraterrestrial PhysicsDE1 paper
- Sorbonne UniversitéFR1 paper
- University of California, Santa BarbaraUS1 paper
- University of California, Santa CruzUS1 paper
13 papers
The Global 21 cm Signal of a Network of Cosmic String Wakes
Oscar F. Hernández
In previous works we discussed the 21 cm signature of a single cosmic string wake. However the 21 cm brightness temperature is influenced by a network of cosmic string wakes, and n…
Information Theoretic Bounds on Cosmic String Detection in CMB Maps with Noise
Razvan Ciuca, Oscar F. Hernández
We use a convolutional neural network (CNN) to study cosmic string detection in cosmic microwave background (CMB) flat sky maps with Nambu-Goto strings. On noiseless maps we can me…
Inferring Cosmic String Tension through the Neural Network Prediction of String Locations in CMB Maps
Razvan Ciuca, Oscar F. Hernández
In previous work, we constructed a convolutional neural network used to estimate the location of cosmic strings in simulated cosmic microwave background temperature anisotropy maps…
A Convolutional Neural Network For Cosmic String Detection in CMB Temperature Maps
Razvan Ciuca, Oscar F. Hernández, Michael Wolman
We present in detail the convolutional neural network used in our previous work to detect cosmic strings in cosmic microwave background (CMB) temperature anisotropy maps. By traini…
A Bayesian Framework for Cosmic String Searches in CMB Maps
Razvan Ciuca, Oscar F. Hernández
There exists various proposals to detect cosmic strings from Cosmic Microwave Background (CMB) or 21 cm temperature maps. Current proposals do not aim to find the location of strin…
Neutrino Masses, Scale-Dependent Growth, and Redshift-Space Distortions
Oscar F. Hernández
Massive neutrinos leave a unique signature in the large scale clustering of matter. We investigate the wavenumber dependence of the growth factor arising from neutrino masses and u…