110 citations · 131 across the 8 of their papers we have counts for
8 papers
Re-examining the sensitivity of JWST to decaying axion dark matter
Caleb Gemmell, Christopher Dessert, Andrea Caputo +1
An eV-scale QCD axion comprising the observed dark matter (DM) abundance is expected to generate a photon line at infrared energies that would be observable or near-observable in d…
A distance-independent constraint on the axion-electron coupling from RGB stars
Thomas Levasseur, Oscar Straniero, Andrea Caputo
Interest in axions and axion-like particles has resurged, driven by their role in solving the strong CP problem and their appeal as dark matter candidates. The luminosity of the ti…
Searching for dark matter X-ray lines from the Large Magellanic Cloud with eROSITA
Jorge Terol Calvo, Marco Taoso, Andrea Caputo +2
We perform a search for an X-ray monochromatic line arising from dark matter (DM) decay in the halo of the Large Magellanic Cloud. An emission line can be expected from two well-mo…
New axion bounds derived from the 100-parsec Gaia DR3 white dwarf luminosity function
Martín L. Alberino, Marcelo M. Miller Bertolami, María E. Camisassa +2
The axion, a well-motivated hypothetical particle arising in extensions of the Standard Model, can be produced copiously within the hot, compact cores of white dwarf stars. The sha…
The Heavy Dark Photon Handbook: Cosmological and Astrophysical Bounds
Andrea Caputo, Jaeyoung Park, Seokhoon Yun
We investigate cosmological and astrophysical constraints on dark photons with masses - MeV. These dark photons can be copiously produced either in the early un…
Cooling the Shock: New Supernova Constraints on Dark Photons
Andrea Caputo, Hans-Thomas Janka, Georg Raffelt +1
During the accretion phase of a core-collapse supernova (SN), dark-photon (DP) cooling can be largest in the gain layer below the stalled shock wave. In this way, it could counter-…
SN 2023ixf -- an average-energy explosion with circumstellar medium and a precursor
Alexandra Kozyreva, Andrea Caputo, Petr Baklanov +2
Abridged: The fortunate proximity of the SN2023ixf allowed astronomers to follow its evolution from almost the moment of the collapse of the progenitor's core. SN2023ixf can be exp…
Astrophysical Axion Bounds: The 2024 Edition
Andrea Caputo, Georg Raffelt
We review the current status of astrophysical bounds on QCD axions, primarily based on the observational effects of nonstandard energy losses on stars, including black-hole superra…