activity
20052026
most citedRotating regular black holes

482 citations · 11.4k across the 295 of their papers we have counts for

collaborators

297 papers

astro-ph.HE2026

Radio flares and X-ray hardening embedded in the long soft state of 4U 1543-475

Zuobin Zhang, Rob Fender, Jiachen Jiang +14

We present a comprehensive multi-wavelength study of the black hole X-ray binary 4U 1543-475 during its 2021 outburst, focusing on radio flaring episodes that are commonly interpre…

gr-qc2026

A Space Mission to Earth's Nearest Black Hole: Reality or Science Fiction?

Cosimo Bambi

Black holes are the sources of the strongest gravitational fields in the present-day Universe, offering unparalleled opportunities to test Einstein's theory of General Relativity i…

astro-ph.HE2026

Physics and Astrophysics of Black Holes with eXTP

Cosimo Bambi

The enhanced X-ray Timing and Polarimetry (eXTP) mission will combine spectral, timing, and polarimetric techniques to study accreting black holes, measure their masses and spins,…

gr-qc2026

Testing Black Holes with Interstellar Missions: II. Flyby Probes

Yi Fan, Cosimo Bambi, Leda Gao +2

Recently, we demonstrated that while an interstellar mission to the nearest black hole remains highly speculative and extraordinarily challenging, it is not entirely implausible wi…

astro-ph.HE2026

Dense, multi-phase accretion disk atmosphere in the low-luminosity state of black hole transientV4641 Sgr

Zuobin Zhang, Rob Fender, James H. Matthews +11

We present soft X-ray spectroscopy of the black-hole X-ray binary V4641~Sgr with the \textit{XMM-Newton} Reflection Grating Spectrometer (RGS). The RGS spectrum shows narrow emissi…

gr-qc2026

Acausal exact vacuum solutions in nonlocal gravity

Zhe Zhao, Leonardo Modesto, Cosimo Bambi

Nonlocal gravity is a promising super-renormalizable or finite quantum gravity theory consistent with unitarity. In this paper, we focus on the classical equations of motion and ex…