activity
20242026
most citedDiscovery of extreme Quasi-Periodic Eruptions in a newly accreting massive black hole

1 citations · 1 across the 4 of their papers we have counts for

collaborators

5 papers

astro-ph.GA2026

VAR-PZnn: A machine-learning framework for AGN photometric redshifts using color and variability-based features

S. Satheesh-Sheeba, P. Sánchez-Sáez, R. J. Assef +39

Photometric redshift estimation for active galactic nuclei (AGNs) remains a fundamental challenge for current and upcoming large-scale photometric surveys. Traditional spectral ene…

astro-ph.GA2026

A Phenomenological Study of the Accretion Disk in the Super-Eddington AGN I Zw 1

Farin Drewes, Roberta Vieliute, Juan V. Hernández Santisteban +11

The structure of the accretion disk in AGN is still an unsolved question, especially how it may change with Eddington ratio. Here we examine the accretion disk in the super-Eddingt…

astro-ph.GA2025

Echo mapping of the black hole accretion flow in NGC 7469

Raj Prince, Juan V. Hernández Santisteban, Keith Horne +20

Reverberation mapping (RM) can measure black hole accretion disc sizes and radial structure through observed time lags that should increase with wavelength as . Ou…

astro-ph.HE2025★ 1 cited

Discovery of extreme Quasi-Periodic Eruptions in a newly accreting massive black hole

Lorena Hernández-García, Joheen Chakraborty, Paula Sánchez-Sáez +27

Quasi-periodic eruptions (QPEs) are rapid, recurring X-ray bursts from supermassive black holes, believed to result from interactions between accretion disks and surrounding matter…

astro-ph.GA2024

Gemini Near Infrared Spectrograph -- Distant Quasar Survey: Rest-Frame Ultraviolet-Optical Spectral Properties of Broad Absorption Line Quasars

Harum Ahmed, Ohad Shemmer, Brandon Matthews +12

We present the rest-frame ultraviolet-optical spectral properties of 65 broad absorption line (BAL) quasars from the Gemini Near Infrared Spectrograph-Distant Quasar Survey (GNIRS-…