359 citations · 907 across the 14 of their papers we have counts for
4 papers · 1 filter
Ultrahigh frequency primordial gravitational waves beyond the kHz: The case of cosmic strings
Géraldine Servant, Peera Simakachorn
We investigate gravitational-wave backgrounds (GWBs) of primordial origin that would manifest only at ultra-high frequencies, from kilohertz to 100 gigahertz, and leave no signal a…
Constraining Postinflationary Axions with Pulsar Timing Arrays
Géraldine Servant, Peera Simakachorn
Models that produce Axion-Like-Particles (ALP) after cosmological inflation due to spontaneous symmetry breaking also produce cosmic string networks. Those axionic strings l…
Cosmological Background Interpretation of Pulsar Timing Array Data
Daniel G. Figueroa, Mauro Pieroni, Angelo Ricciardone +1
We discuss the interpretation of the detected signal by Pulsar Timing Array (PTA) observations as a gravitational wave background (GWB) of cosmological origin. We combine NANOGrav…
Primordial Black Hole Archaeology with Gravitational Waves from Cosmic Strings
Anish Ghoshal, Yann Gouttenoire, Lucien Heurtier +1
Light primordial black holes (PBHs) with masses smaller than g () evaporate before the onset of Big-Bang nucleosynthesis, rendering their detection rather…