40 citations · 43 across the 10 of their papers we have counts for
6 papers · 1 filter
Quasinormal modes and quantum black hole interiors
Chiara Coviello, Ansh Gupta, Robie A. Hennigar +2
Quasinormal modes (QNMs) of black hole perturbations in the large overtone limit, namely, asymptotic QNMs, are highly sensitive to a black hole's interior geometry. We probe the si…
Looking inside a quantum black hole
Chiara Coviello, Ansh Gupta, Robie A. Hennigar +2
Quantum effects are expected to modify a black hole's interior structure, particularly near the singularity. We show how to extract the scaling exponent of the singularity from the…
JWST Reveals a Candidate Supermassive Black Hole Binary at z=4.3 in the Brightest Sub-millimeter Galaxy in COSMOS-Web
Jed McKinney, Ansh Gupta, Julian B. Munoz +13
We present JWST/NIRSpec PRISM and G395M grating spectroscopy for AzTEC-1, a massive sub-mm bright galaxy at in the COSMOS extragalactic field. The PRISM spectrum reveals s…
An Optical Illusion: High Electron Densities Create Extremely Metal-Poor Galaxy Impostors
Tiger Yu-Yang Hsiao, Danielle A. Berg, Steven L. Finkelstein +8
JWST has enabled the discovery of dozens of extremely metal-poor galaxies (EMPGs) with metallicities below , representing a significant leap toward detecting the fi…
A Rapid Evolution in the Observed Mbh/M* Relation at z > 3 Revealed via Spectro-photometric SED-Modeling
Ansh R. Gupta, Anthony Taylor, Emma Curtis-Lake +33
Spectroscopic observations from JWST have uncovered a plethora of active galactic nuclei (AGN) at z > 4 with black hole (BH) mass (Mbh) to stellar mass (M*) ratios significantly ab…
Properties of black holes in non-linear electrodynamics
Lewis Croney, Ruth Gregory, Ansh Gupta +1
We investigate the properties of charged black hole geometries in nonlinear electrodynamics. We focus on the recently reported analytic charged black hole solutions to illustrate t…