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pro vyhledávání: '"To, Kin‐Wang"'
In the summer of 2023, the pulsar timing arrays (PTAs) announced a compelling evidence for the existence of a nanohertz stochastic gravitational wave background (SGWB). Despite this breakthrough, however, several critical questions remain unanswered:
Externí odkaz:
http://arxiv.org/abs/2409.07955
Pulsar timing arrays have reported a compelling evidence of a nanohertz stochastic gravitational wave background. However, the origin of the signal remains undetermined, largely because its spectrum is bluer for an astrophysical source and can be exp
Externí odkaz:
http://arxiv.org/abs/2409.01218
The degree of Gaussianity of a field offers insights into its cosmological nature, and its statistical properties serve as indicators of its Gaussianity. In this work, we examine the signatures of Gaussianity in a gravitational wave background (GWB)
Externí odkaz:
http://arxiv.org/abs/2407.17987
Publikováno v:
JCAP 04 (2024) 034
The recent compelling observation of the nanohertz stochastic gravitational wave background has brought to light a new galactic arena to test gravity. In this paper, we derive a formula for the most general expression of the stochastic gravitational
Externí odkaz:
http://arxiv.org/abs/2312.03383
Publikováno v:
A&A 691, A126 (2024)
The recent astronomical milestone by the pulsar timing arrays (PTA) has revealed galactic-size gravitational waves (GW) in the form of a stochastic gravitational wave background (SGWB), correlating the radio pulses emitted by millisecond pulsars. Thi
Externí odkaz:
http://arxiv.org/abs/2310.07537
Publikováno v:
Phys. Rev. D 109, L101502 (2024)
The nanohertz stochastic gravitational wave background (SGWB) is an excellent early universe laboratory for testing the fundamental properties of gravity. In this letter, we elucidate on the full potential of pulsar timing array (PTA) by utilizing co
Externí odkaz:
http://arxiv.org/abs/2306.13593
It is known that the single-field inflation with a transient ultra-slow-roll phase can produce a large curvature perturbation at small scales for the formation of primordial black holes. In our previous work, we have considered quantum loop correctio
Externí odkaz:
http://arxiv.org/abs/2305.16810
Publikováno v:
JCAP 08 (2023) 028
Incredible progress on the theoretical uncertainty of the spatial correlations of the stochastic gravitational wave (GW) background were recently made. However, it remains to realize the impact of this theoretical uncertainty on PTA cross correlation
Externí odkaz:
http://arxiv.org/abs/2304.07040
Publikováno v:
Phys. Rev. D 107, L101502 (2023)
Pulsar timing arrays (PTA) are a promising probe to the cosmologically novel nanohertz gravitational wave (GW) regime through the stochastic GW background. In this work, we consider subluminal GW modes as a possible source of correlations in a PTA, u
Externí odkaz:
http://arxiv.org/abs/2302.11796
Autor:
Liu, Guo-Chin, Ng, Kin-Wang
The detection of gravitational waves from the coalescences of binary compact stars by current interferometry experiments has opened up a new era of gravitational-wave astrophysics and cosmology. The search for a stochastic gravitational-wave backgrou
Externí odkaz:
http://arxiv.org/abs/2210.16143