452 citations · 3.5k across the 64 of their papers we have counts for
7 papers · 1 filter
What is the source of the PTA GW signal?
John Ellis, Malcolm Fairbairn, Gabriele Franciolini +7
The most conservative interpretation of the nHz stochastic gravitational wave background (SGWB) discovered by NANOGrav and other Pulsar Timing Array (PTA) Collaborations is astroph…
The recent gravitational wave observation by pulsar timing arrays and primordial black holes: the importance of non-gaussianities
Gabriele Franciolini, Antonio Junior Iovino, Ville Vaskonen +1
We study whether the signal seen by pulsar timing arrays (PTAs) may originate from gravitational waves (GWs) induced by large primordial perturbations. Such perturbations may be ac…
Gravitational Waves from SMBH Binaries in Light of the NANOGrav 15-Year Data
John Ellis, Malcolm Fairbairn, Gert Hütsi +4
The NANOGrav Collaboration has recently announced evidence for nHz gravitational waves (GWs), in the form of a Hellings-Downs angular correlation in the common-spectrum process tha…
Dynamics of false vacuum bubbles with trapped particles
Marek Lewicki, Kristjan Müürsepp, Joosep Pata +3
We study the impact of the ambient fluid on the evolution of collapsing false vacuum bubbles by simulating the dynamics of a coupled bubble-particle system. A significant increase…
Electroweak vacuum decay in metric-affine gravity
Ioannis D. Gialamas, Hardi Veermäe
We investigate the stability of the electroweak vacuum in metric-affine gravity in which the Standard Model Higgs boson can be non-minimally coupled to both the Ricci scalar and th…
Gravitational wave microlensing by dressed primordial black holes
Juan Urrutia, Ville Vaskonen, Hardi Veermäe
We study gravitational wave microlensing by primordial black holes (PBHs), accounting for the effect of a particle dark matter minihalo surrounding them. Such minihaloes are expect…
Prospects for Future Binary Black Hole GW Studies in Light of PTA Measurements
John Ellis, Malcolm Fairbairn, Gert Hütsi +4
NANOGrav and other Pulsar Timing Arrays (PTAs) have discovered a common-spectrum process in the nHz range that may be due to gravitational waves (GWs): if so, they are likely to ha…