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Gamma-ray flux limits from brown dwarfs: Implications for dark matter annihilating into long-lived mediators
Pooja Bhattacharjee, Francesca Calore, Pasquale Dario Serpico
Brown dwarfs (BDs) are celestial objects representing the link between the least massive main-sequence stars and giant gas planets. In the first part of this article, we perform a…
Constraints on light decaying dark matter candidates from 16 years of INTEGRAL/SPI observations
Francesca Calore, Ariane Dekker, Pasquale Dario Serpico +1
We apply the recently developed analysis of 16 years of INTEGRAL/SPI data including a dark matter spatial template to derive bounds on dark matter candidates lighter than WIMPs (li…
The QCD phase transition behind a PBH origin of LIGO/Virgo events?
Joaquim Iguaz Juan, Pasquale Serpico, Guillermo Franco Abellán
The best-motivated scenario for a sizable primordial black hole (PBH) contribution to the LIGO/Virgo binary black hole mergers invokes the QCD phase transition, which naturally enh…
AMS-02 antiprotons and dark matter: Trimmed hints and robust bounds
Francesca Calore, Marco Cirelli, Laurent Derome +4
Based on 4 yr AMS-02 antiproton data, we present bounds on the dark matter (DM) annihilation cross section vs. mass for some representative final state channels. We use recent cosm…
Diffuse Galactic emission spectrum between 0.5 and 8.0 MeV
Thomas Siegert, Joanna Berteaud, Francesca Calore +2
The last measurement of the diffuse emission spectrum of the Milky Way in the megaelectronvolt (MeV) photon energy range was performed by CGRO/COMPTEL more than 20 years ago. We re…
Strong constraints on primordial black hole dark matter from 16 years of INTEGRAL/SPI observations
J. Berteaud, F. Calore, J. Iguaz +2
We present a new analysis of the diffuse soft -ray emission towards the inner Galaxy as measured by the SPectrometer aboard the INTEGRAL satellite (SPI) with 16 years of data ta…