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astro-ph.GA2024
High-Redshift Merger Model for Low-Frequency Gravitational Wave Background
Zhao-Feng Wu, Dimitrios Giannios
In 2023, the Pulsar Timing Array (PTA) Collaborations announced the discovery of a gravitational wave background (GWB), predominantly attributed to supermassive black hole binary (…
astro-ph.GA2018
Extreme scattering events from axisymmetric plasma lenses
Lingyi Dong, Maria Petropoulou, Dimitrios Giannios
Frequency-dependent brightness fluctuations of radio sources, the so-called extreme scattering events (ESEs), have been observed over the last three decades. They are caused by Gal…