105 citations · 581 across the 24 of their papers we have counts for
27 papers
LazyTB: Extended LTB-solutions with Multiple Interacting Fluids
Kimmo Kainulainen, Enrico D. Schiappacasse, Enrico Schiappacasse +2
We present a low entry barrier numerical code LazyTB that solves the Einstein equations in the ADM-formulation for a general spherically symmetric problem with an arbitrary number…
A Unified Numerical Study of Axion Stars: From the Nonrelativistic Regime to General Relativity
Parisa Arabameri, Paola Arias, Francisco Colipí-Marchant +1
Axion-star mass-radius relations are commonly computed using different orders of relativistic approximation, making it important to determine where these descriptions remain reliab…
Multi-messenger signal from QCD-Axion Ultracompact Minihalos
Dorian W. P. Amaral, Enrico D. Schiappacasse, Karla Tapia-Rebolledo
We explore the multimessenger signatures from ultracompact minihalos (UCMHs) seeded by stellar-mass primordial black holes (PBHs) and composed of QCD-axion dark matter. Using the s…
Dipole Radiation and Kinetic Mixing from Dark Photon Solitons
Enrico D. Schiappacasse, Moira Venegas
Wave-like dark matter composed of spin-1 particles, known as dark photons, is theorized to form clumps called "vector solitons". These solitons are compact astrophysical objects th…
Constraining Dark Photon Dark Matter with Radio Silence from Soliton Mergers around Supermassive Black Holes
Dorian W. P. Amaral, Enrico D. Schiappacasse, Hong-Yi Zhang
We place the first constraints on the dark matter fraction contained within dark photon solitons using the absence of their predicted radio-frequency signatures, or radio silence,…
Dark photon dark matter from flattened axion potentials
Hong-Yi Zhang, Paola Arias, Andrew Cheek +3
Dark photons can be resonantly produced in the early universe via their coupling to an oscillating axion field. However, this mechanism typically requires large axion--dark photon…