79 citations · 343 across the 12 of their papers we have counts for
12 papers
Accelerating the search for Axion-Like Particles with machine learning
Francesca Day, Sven Krippendorf
Machine learning (ML) techniques have been applied with tremendous success in many areas of physics. In this work, we use ML to place bounds on the coupling between photons and axi…
Axion superradiance in rotating neutron stars
Francesca V. Day, Jamie I. McDonald
It is a well-known fact that compact gravitating objects admit bound state configurations for massive bosonic fields. In this work we describe a new class of superradiant instabili…
Neutron star -- axion star collisions in the light of multi-messenger astronomy
Tim Dietrich, Francesca Day, Katy Clough +2
Axions are increasingly favoured as a candidate particle for the dark matter in galaxies, since they satisfy the observational requirements for cold dark matter and are theoretical…
Searching for Axion-Like Particles with X-ray Polarimeters
Francesca Day, Sven Krippendorf
X-ray telescopes are an exceptional tool for searching for new fundamental physics. In particular, X-ray observations have already placed world-leading bounds on the interaction be…
Detecting Fluorescent Dark Matter with X-ray lasers
Francesca Day, Malcolm Fairbairn
Fluorescent Dark Matter has been suggested as a possible explanation of both the 3.5 keV excess in the diffuse emission of the Perseus Cluster and of the deficit at the same energy…
Projected bounds on ALPs from Athena
Joseph P. Conlon, Francesca Day, Nicholas Jennings +2
Galaxy clusters represent excellent laboratories to search for Axion-Like Particles (ALPs). They contain magnetic fields which can induce quasi-sinusoidal oscillations in the X-ray…
Consistency of Hitomi, XMM-Newton and Chandra 3.5 keV data from Perseus
Joseph P. Conlon, Francesca Day, Nicholas Jennings +2
\emph{Hitomi} observations of Perseus with the Soft X-ray Spectrometer (SXS) provide a high-resolution look at the 3.5 keV feature reported by multiple groups in the Perseus cluste…
Constraints on Axion-Like Particles from X-ray Observations of NGC1275
Marcus Berg, Joseph P. Conlon, Francesca Day +4
Axion-like particles (ALPs) can induce localised oscillatory modulations in the spectra of photon sources passing through astrophysical magnetic fields. Ultra-deep Chandra observat…
Cosmic axion background propagation in galaxies
Francesca V. Day
Many extensions of the Standard Model include axions or axion-like particles (ALPs). Here we study ALP to photon conversion in the magnetic field of the Milky Way and starburst gal…
Observational consistency and future predictions for a 3.5 keV ALP to photon line
Pedro D. Alvarez, Joseph P. Conlon, Francesca V. Day +2
Motivated by the possibility of explaining the 3.5 keV line through dark matter decaying to axion-like particles that subsequently convert to photons, we study ALP-photon conversio…
3.55 keV photon lines from axion to photon conversion in the Milky Way and M31
Joseph P. Conlon, Francesca V. Day
We further explore a scenario in which the recently observed 3.55 keV photon line arises from dark matter decay to an axion-like particle (ALP) of energy 3.55 keV, which then conve…
The Ising ferromagnet as a self-correcting physical memory: a Monte-Carlo study
Francesca Valery Day, Sean Barrett
The advent of quantum computing has heralded a renewed interest in physical memories - physically realizable structures that offer reliable data storage with error correction only…