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Detailed theoretical modelling of the kinetic Sunyaev-Zel'dovich stacking power spectrum
Amy Wayland, David Alonso, Adrien La Posta
https://arxiv.org/abs/2509.18732 https://…

Detailed theoretical modelling of the kinetic Sunyaev-Zel'dovich stacking power spectrum
We examine, from first principles, the angular power spectrum between the kinematic Sunyaev-Zel'dovich effect (kSZ) and the reconstructed galaxy momentum - the basis of existing and future "kSZ stacking" analyses. We present a comprehensive evaluation of all terms contributing to this cross-correlation, including both the transverse and longitudinal modes of the density-weighted velocity field, as well as all irreducible correlators that contribute to the momentum power spectrum. This includes …

Imperfect Competition in Markets for Short-Circuit Current Services
Peng Wang, Luis Badesa
https://arxiv.org/abs/2508.09425 https://arxiv.org/pdf/2508.0942…

Imperfect Competition in Markets for Short-Circuit Current Services
An important limitation of Inverter-Based Resources (IBR) is their reduced contribution to Short-Circuit Current (SCC), as compared to that of Synchronous Generators (SGs). With increasing penetration of IBR in most power systems, the reducing SCC poses challenges to a secure system operation, as line protections may not trip when required. In order to address this issue, the SCC ancillary service could be procured via an economic mechanism, aiming at securing adequate SCC on all buses. However…