Zobrazeno 1 - 10
of 4 039
pro vyhledávání: '"Stochastic gravitational wave background"'
Autor:
Darling, Jeremy
We present new astrometric constraints on the stochastic gravitational wave background and construct the first astrometric Hellings-Downs curve using quasar proper motions. From quadrupolar vector spherical harmonic fits to the Gaia proper motions of
Externí odkaz:
http://arxiv.org/abs/2412.08605
Autor:
Sah, Mohit Raj, Mukherjee, Suvodip
The isotropic stochastic gravitational wave background (SGWB) generated by a population of supermassive black hole binaries (BHBs) provides a unique window into their cosmic evolution. In addition to the isotropic power spectrum, the anisotropic comp
Externí odkaz:
http://arxiv.org/abs/2501.01499
The detection of parity violation in the isotropic stochastic gravitational wave background (SGWB) will serve a crucial probe for new physics, particularly in parity-violating theories of gravity. The joint observations by the planned space-borne gra
Externí odkaz:
http://arxiv.org/abs/2412.18420
Autor:
Rybak, I. Yu., Sousa, L.
We investigate the emission of vector radiation by superconducting cosmic string loops, deriving general relations to characterize the vector radiation emission efficiency, and study its impact on the evolution of loops. Building on these results, we
Externí odkaz:
http://arxiv.org/abs/2412.17154
Autor:
Caldarola, Marienza, Morrás, Gonzalo, Jaraba, Santiago, Kuroyanagi, Sachiko, Nesseris, Savvas, García-Bellido, Juan
Astrometric measurements provide a unique avenue for constraining the stochastic gravitational wave background (SGWB). In this work, we investigate the application of two neural network architectures, a fully connected network and a graph neural netw
Externí odkaz:
http://arxiv.org/abs/2412.15879
The stochastic gravitational wave background (GWB) recently discovered by several pulsar timing array (PTA) experiments is consistent with arising from a population of coalescing super-massive black hole binaries (SMBHBs). The amplitude of the backgr
Externí odkaz:
http://arxiv.org/abs/2412.12726
Impact of correlated magnetic noise on directional stochastic gravitational-wave background searches
One potential factor that could impede searches for the stochastic gravitational-wave background (SGWB), arising from the incoherent superposition of a multitude of weak and unresolvable gravitational-wave signals in the Universe, is correlated magne
Externí odkaz:
http://arxiv.org/abs/2411.11746
We investigate cosmological vacuum amplification of gravitational waves in dynamical Chern-Simons gravity. We develop a comprehensive framework to compute graviton production induced by the parity violating Pontryagin coupling and study its imprint o
Externí odkaz:
http://arxiv.org/abs/2411.04233
Autor:
Kuwahara, Soichiro, Tsukada, Leo
Stochastic background gravitational waves have not yet been detected by ground-based laser interferometric detectors, but recent improvements in detector sensitivity have raised considerable expectations for their eventual detection. Previous studies
Externí odkaz:
http://arxiv.org/abs/2411.19761
Research on pulsar timing arrays has provided preliminary evidence for the existence of a stochastic gravitational background, which, either being primordial or of astrophysical origin, will interact universally with matter distributions in our unive
Externí odkaz:
http://arxiv.org/abs/2410.10722