1 code implementation • 3 Mar 2023 • Nikolaos Karnesis, Michael L. Katz, Natalia Korsakova, Jonathan R. Gair, Nikolaos Stergioulas
In recent years, methods for Bayesian inference have been widely used in many different problems in physics where detection and characterization are necessary.
1 code implementation • 22 Sep 2022 • Marlin B. Schäfer, Ondřej Zelenka, Alexander H. Nitz, He Wang, Shichao Wu, Zong-Kuan Guo, Zhoujian Cao, Zhixiang Ren, Paraskevi Nousi, Nikolaos Stergioulas, Panagiotis Iosif, Alexandra E. Koloniari, Anastasios Tefas, Nikolaos Passalis, Francesco Salemi, Gabriele Vedovato, Sergey Klimenko, Tanmaya Mishra, Bernd Brügmann, Elena Cuoco, E. A. Huerta, Chris Messenger, Frank Ohme
The final of the 4 provided datasets contained real noise from the O3a observing run and signals up to a duration of 20 seconds with the inclusion of precession effects and higher order modes.
1 code implementation • 16 Mar 2022 • Styliani-Christina Fragkouli, Paraskevi Nousi, Nikolaos Passalis, Panagiotis Iosif, Nikolaos Stergioulas, Anastasios Tefas
In several cases, small improvements can be observed, but the most significant improvement still comes from the addition of a second network that models the residual error.
no code implementations • 9 Jul 2021 • Paraskevi Nousi, Styliani-Christina Fragkouli, Nikolaos Passalis, Panagiotis Iosif, Theocharis Apostolatos, George Pappas, Nikolaos Stergioulas, Anastasios Tefas
Based on this finding, we design a spiral module with learnable parameters, that is used as the first layer in a neural network, which learns to map the input space to the coefficients.
no code implementations • 24 Feb 2021 • Georgios Lioutas, Andreas Bauswein, Nikolaos Stergioulas
We relate the fundamental quadrupolar fluid mode of isolated non-rotating NSs and the dominant oscillation frequency of neutron star merger remnants.
High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology
no code implementations • 20 Nov 2020 • Panagiotis Iosif, Nikolaos Stergioulas
We present equilibrium sequences of rotating relativistic stars, constructed with a new rotation law that was proposed by Uryu et al. (2017).
General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena
1 code implementation • 8 Nov 1994 • Nikolaos Stergioulas, John L. Friedman
We present the first direct comparison of codes based on two different numerical methods for constructing rapidly rotating relativistic stars.