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Carenza, Pierluca; Mastrototaro, Leonardo; Balaji, Shyam +1 more
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Three-body exchanges with primordial black holes
Sinha, Kuver; Bhalla, Badal; Lehmann, Benjamin V. +1 more
The abundance of massive primordial black holes has historically been constrained by dynamical probes. Since these objects can participate in hard few-body scattering processes, they can readily transfer energy to stellar systems and, in particular, disrupt wide binaries. However, disruption is not the only possible outcome of such few-body proces…
Precision measurements of the magnetic parameters of LISA Pathfinder test masses
Mendes, L.; Russano, G.; Nofrarias, M. +76 more
A precise characterization of the magnetic properties of LISA Pathfinder free falling test-masses is of special interest for future gravitational wave observatory in space. Magnetic forces have an important impact on the instrument sensitivity in the low frequency regime below the millihertz. In this paper we report on the magnetic injection exper…
X-ray polarimetric features of gamma-ray bursts across varied redshifts and hints for axionlike particles
Wang, Zhongxiang; Fang, Taotao; Huang, Feng +1 more
Polarimetric features during the prompt phase of gamma-ray bursts (GRBs) have been essential for elucidating the debated emission mechanisms and gaining insight into the inner structure of GRBs. However, the potential impact of photon-axionlike particle (ALP) mixing in extragalactic magnetic fields, leading to significant modifications to the init…
Detection and characterization of quasiperiodic oscillations in the Seyfert galaxy NGC 4151
Yongkang, Yan; Peng, Zhang; Zhou, Lu +6 more
This study aims to detect and characterize quasiperiodic oscillations (QPOs) signals in x-ray observations of NGC 4151. We employed the weighted wavelet Z-transform and Lomb-Scargle periodogram methods for our analysis. QPO signals with frequencies of