All Publications


  • Discovering supernova-produced dark matter with directional detectors PHYSICAL REVIEW D Baracchini, E., DeRocco, W., Dho, G. 2020; 102 (7)
  • Exploring the robustness of stellar cooling constraints on light particles PHYSICAL REVIEW D DeRocco, W., Graham, P. W., Rajendran, S. 2020; 102 (7)
  • Muons in Supernovae: Implications for the Axion-Muon Coupling PHYSICAL REVIEW LETTERS Bollig, R., DeRocco, W., Graham, P. W., Janka, H. 2020; 125 (5)
  • Observing the dark sector with supernovae DeRocco, W., IOP IOP PUBLISHING LTD. 2020
  • Muons in Supernovae: Implications for the Axion-Muon Coupling. Physical review letters Bollig, R. n., DeRocco, W. n., Graham, P. W., Janka, H. T. 2020; 125 (5): 051104

    Abstract

    The high temperature and electron degeneracy attained during a supernova allow for the formation of a large muon abundance within the core of the resulting protoneutron star. If new pseudoscalar degrees of freedom have large couplings to the muon, they can be produced by this muon abundance and contribute to the cooling of the star. By generating the largest collection of supernova simulations with muons to date, we show that observations of the cooling rate of SN 1987A place strong constraints on the coupling of axionlike particles to muons, limiting the coupling to g_{aμ}<10^{-8.1}  GeV^{-1}.

    View details for DOI 10.1103/PhysRevLett.125.051104

    View details for PubMedID 32794860

  • Constraining Primordial Black Hole Abundance with the Galactic 511 keV Line PHYSICAL REVIEW LETTERS DeRocco, W., Graham, P. W. 2019; 123 (25)
  • Supernova signals of light dark matter PHYSICAL REVIEW D DeRocco, W., Graham, P. W., Kasen, D., Marques-Tavares, G., Rajendran, S. 2019; 100 (7)
  • Observable signatures of dark photons from supernovae JOURNAL OF HIGH ENERGY PHYSICS DeRocco, W., Graham, P. W., Kasen, D., Marques-Tavares, G., Rajendran, S. 2019
  • Constraining Primordial Black Hole Abundance with the Galactic 511 keV Line. Physical review letters DeRocco, W. n., Graham, P. W. 2019; 123 (25): 251102

    Abstract

    Models in which dark matter consists entirely of primordial black holes (PBHs) with masses around 10^{17}  g are currently unconstrained. However, if PBHs are a component of the Galactic dark matter density, they will inject a large flux of energetic particles into the Galaxy as they radiate. Positrons produced by these black holes will subsequently propagate throughout the Galaxy and annihilate, contributing to the Galactic 511 keV line. Using measurements of this line by the INTEGRAL satellite as a constraint on PBH positron injection, we place new limits on PBH abundance in the mass range 10^{16}-10^{17}  g, ruling out models in which these PBHs constitute the entirety of dark matter.

    View details for DOI 10.1103/PhysRevLett.123.251102

    View details for PubMedID 31922803

  • Axion interferometry PHYSICAL REVIEW D DeRocco, W., Hook, A. 2018; 98 (3)