The latest pulsar timing array data reveal evidence of nanohertz gravitational waves (GWs), which have been explained by both cosmological and astrophysical sources. However, current observations lack the precision needed to differentiate between different models from the spectral index. We find that ...
nanohertz gravitational-wave sources, and 7 ± 2 binaries that will never merge, within 225 Mpc. These local unresolved gravitational-wave sources can generate a departure from an isotropic gravitational-wave background at a level of about 20 per cent, and if the cosmic gravitational-wave...
The latest pulsar timing array data reveal evidence of nanohertz gravitational waves (GWs), which have been explained by both cosmological and astrophysical sources. However, current observations lack the precision needed to differentiate between different models from the spectral index. We find that th...
We conclude that recent reported evidence for a nanohertz gravitational-wave background is likely robust to the most obvious sources of systematic errors; if anything, the signif i cance of the signal ispotentially underestimated.Key words: stars: neutron – pulsars: general – gravitational waves ...
Machine Learning for the Gravitational Wave Observation with Pulsar Timing Arraymachine learningneural networkPTAGW-induced time residualsStudies have shown that the use of pulsar timing arrays (PTAs) is among the\napproaches with the highest potential to detect very low-frequency\ngravitational waves ...
Using the 2 Micron All-Sky Survey, together with galaxy merger rates from the Illustris simulation project, we find that there are on average 91卤7 continuous nanohertz gravitational-wave sources, and 7卤2 binaries that will never merge, within 225Mpc. These local unresolved gravitational-wave ...
Telescopes and develop and implement new\ninstrumentation and algorithms for searching for and observing pulsars,\ncalculating arrival times, understanding and correcting for propagation delays\nand sources of noise in our data, and detecting and characterizing a variety of\ngravitational wave sources. We...
We conclude that recent reported evidence for a nanohertz gravitational wave background is likely robust to the most obvious sources of systematic errors; if anything, the significance of the signal is potentially underestimated.DiMarco Valentina...