7 papers

gr-qc2026

Parameter-estimation bias induced by transient orbital resonances in extreme-mass-ratio inspirals

Edoardo Levati, Alejandro Cárdenas-Avendaño

Given the multifrequency nature of relativistic orbits, transient orbital resonances are expected to be ubiquitous during an extreme-mass-ratio inspiral (EMRI). At a resonance, the…

astro-ph.HE2026

Light Propagation Prescriptions for Black Hole Movies

Daniel Rojas-Paternina, Alejandro Cárdenas-Avendaño

The spatiotemporal content of a black-hole movie is set jointly by source variability and by the distribution of light-travel times across the image. In the slow-light prescription…

astro-ph.HE2026

Gravitational Wave Measurement of the - Intrinsic Scatter at High Redshift

Cayenne Matt, Kayhan Gültekin, Gabriella Agazie +109

The observed GWB spectrum is higher in amplitude than model predictions by a factor of 2-3. Using a semi-analytic model, we evaluate the effect of a high-scatter supermassive black…

astro-ph.HE2026

Sensitivities of Black Hole Images from GRMHD Simulations

Pedro Naethe Motta, Mário Raia Neto, Cora Prather +1

The advent of high-fidelity imaging of supermassive black holes calls for efficient and robust data-analysis methods. In this work, we use , a differentiable, $\te…

astro-ph.HE2026

Polarization Signatures of Inspiraling Hotspots around Kerr Black Holes

Pablo Ruales, Delilah E. A. Gates, Alejandro Cárdenas-Avendaño

Polarimetric interferometry is a powerful tool for probing both black hole accretion physics and the background spacetime. Current models aimed at explaining the observed multiwave…

math.CO2026

An Erdős--Szekeres type result for words with repeats

Kyle Celano, Abigail Ollson, Niraj Velankar +1

We prove an Erdős--Szekeres type result for finite words over with repeated values. Specifically, we define a \emph{repeat} in a word to be an occurrence of a value w…