279 citations · 2.4k across the 48 of their papers we have counts for
13 papers · 1 filter
The Second Radio Synchrotron Background Workshop: Conference Summary and Report
J. Singal, N. Fornengo, M. Regis +24
We summarize the second radio synchrotron background workshop, which took place June 15-17, 2022 in Barolo, Italy. This meeting was convened because available measurements of the d…
Seeking dark matter with -ray attenuation
José Luis Bernal, Andrea Caputo, Gabriela Sato-Polito +2
The flux of high-energy astrophysical rays is attenuated by the production of electron-positron pairs from scattering off of extragalactic background light (EBL). We use the mo…
Searching for dark-matter waves with PPTA and QUIJOTE pulsar polarimetry
Andrés Castillo, Jorge Martin-Camalich, Jorge Terol-Calvo +6
The polarization of photons emitted by astrophysical sources might be altered as they travel through a dark matter medium composed of ultra light axion-like particles (ALPs). In pa…
Searching for axion-like particle decay in the near-infrared background: an updated analysis
Andrea Caputo, Andrea Vittino, Nicolao Fornengo +2
The extragalactic background light is comprised of the cumulative radiation from all galaxies across the history of the universe. The angular power spectrum of the anisotropies of…
Strategies to Detect Dark-Matter Decays with Line-Intensity Mapping
José Luis Bernal, Andrea Caputo, Marc Kamionkowski
The nature of dark matter is a longstanding mystery in cosmology, which can be studied with laboratory or collider experiments, as well as astrophysical and cosmological observatio…
Edges and Endpoints in 21-cm Observations from Resonant Photon Production
Andrea Caputo, Hongwan Liu, Siddharth Mishra-Sharma +3
We introduce a novel class of signatures---spectral edges and endpoints---in 21-cm measurements resulting from interactions between the standard and dark sectors. Within the contex…
Axion helioscopes as solar magnetometers
Ciaran A. J. O'Hare, Andrea Caputo, Alexander J. Millar +1
Axion helioscopes search for solar axions and axion-like particles via inverse Primakoff conversion in strong laboratory magnets pointed at the Sun. Anticipating the detection of s…
Modeling Dark Photon Oscillations in Our Inhomogeneous Universe
Andrea Caputo, Hongwan Liu, Siddharth Mishra-Sharma +1
A dark photon may kinetically mix with the Standard Model photon, leading to observable cosmological signatures. The mixing is resonantly enhanced when the dark photon mass matches…
Dark Photon Oscillations in Our Inhomogeneous Universe
Andrea Caputo, Hongwan Liu, Siddharth Mishra-Sharma +1
A dark photon may kinetically mix with the ordinary photon, inducing oscillations with observable imprints on cosmology. Oscillations are resonantly enhanced if the dark photon mas…
Searching for Sterile Neutrino with X-ray Intensity Mapping
A. Caputo, M. Regis, M. Taoso
The cosmological X-ray emission associated to the possible radiative decay of sterile neutrinos is composed by a collection of lines at different energies. For a given mass, each l…
Constraints on millicharged dark matter and axion-like particles from timing of radio waves
Andrea Caputo, Laura Sberna, Miguel Frias +4
We derive novel constraints on millicharged dark matter and ultralight axion-like particles using pulsar timing and fast radio burst observations. Millicharged dark matter affects…
Looking for Axion Dark Matter in Dwarf Spheroidals
Andrea Caputo, Carlos Peña Garay, Samuel J. Witte
We study the extent to which the decay of cold dark matter axions can be probed with forthcoming radio telescopes such as the Square Kilometer Array (SKA). In particular we focus o…
Exploring Cosmic Origins with CORE: Cosmological Parameters
Eleonora Di Valentino, Thejs Brinckmann, Martina Gerbino +125
We forecast the main cosmological parameter constraints achievable with the CORE space mission which is dedicated to mapping the polarisation of the Cosmic Microwave Background (CM…