4 citations · 4 across the 4 of their papers we have counts for
8 papers
Prominence: A discriminator of gravitational wave signals
João Gonçalves, Danny Marfatia, António P. Morais
The concept of prominence is familiar to signal engineers, topographers and mountaineers. We introduce Prominence as a discriminator of gravitational wave (GW) signals. We…
Primordial black holes and magnetic fields in conformal neutrino mass models
Shyam Balaji, João Gonçalves, Danny Marfatia +2
Sufficiently strong and long-lasting first-order phase transitions can produce primordial black holes (PBHs) that contribute substantially to the dark matter abundance of the Unive…
Angular momentum of vacuum bubbles in a first-order phase transition
Jan Tristram Acuña, Danny Marfatia, Po-Yan Tseng
The formation of primordial black holes (PBHs) during a first-order phase transition (FOPT) in a dark sector has been of recent interest. A quantity that characterizes a black hole…
Sterile neutrino dark matter in conformal Majoron models
João Gonçalves, Danny Marfatia, António P. Morais +2
We study sterile neutrino dark matter (DM) in a classically conformal U(1)' extension of the Standard Model with three right-handed neutrinos and a Majoron-like singlet scalar that…
Supercooled phase transitions in conformal dark sectors explain NANOGrav data
João Gonçalves, Danny Marfatia, António P. Morais +1
According to recent lore, it is difficult to explain the evidence for a stochastic gravitational wave background obtained by pulsar timing arrays with supercooled first-order phase…
Primordial black holes from Q-balls produced in a first-order phase transition
James B. Dent, Bhaskar Dutta, Jason Kumar +1
We consider the formation of Q-balls in false vacuum remnants during a cosmological first-order phase transition. We find that under certain circumstances Q-balls can collapse to f…