193 citations · 440 across the 19 of their papers we have counts for
11 papers · 1 filter
Orbital Migration of Interacting Stellar Mass Black Holes in Disks around Supermassive Black Holes. III. Mass Distribution of Hierarchical Mergers
Katherine L. Gonglewski, Amy Secunda, Mordecai-Mark Mac Low +3
Active galactic nucleus (AGN) disks are a promising location for the formation of binary black holes (BBHs) that will merge on relatively short timescales and be detected by LIGO-V…
The GlimmIr: Spectroscopic Variability in a z~7 LRD Indicates Rapid Changes in Both the Narrow and Broad Line Regions
Erini Lambrides, Taylor A. Hutchison, Rebecca L. Larson +39
The enigmatic population of ``Little Red Dots'' (LRDs) sit at the center of some of the largest debates in extragalactic astronomy today. The source(s) of ionizing emission and the…
How I Wonder What You Are -- JWST's Little Red Dots do not TWINKLE
Zhaoran Liu, Rohan P. Naidu, Amy Secunda +20
Little Red Dots (LRDs) are a population of compact, red sources that have emerged as one of the most puzzling findings of JWST. Variability provides a direct probe of their central…
Measuring the Vertical Structure of Active Galactic Nuclei Disks with Transformer Models and the Vera C. Rubin Observatory
Amy Secunda, Sebastian Wagner-Carena, Helen Qu +1
Reverberation mapping is one of the main techniques used to study active galactic nuclei (AGN) accretion disks. Traditional continuum reverberation mapping uses short lags between…
Do Little Red Dots Vary?
Amy Secunda, Rachel S. Somerville, Yan-Fei Jiang +3
Little red dots (LRDs), high-redshift, compact, red objects with V-shaped spectra, are one of the most exciting and perplexing discoveries made by the James Webb Space Telescope (J…
Investigating photometric and spectroscopic variability in the multiply-imaged Little Red Dot A2744-QSO1
Lukas J. Furtak, Amy R. Secunda, Jenny E. Greene +25
JWST observations have uncovered a new population of red, compact objects at high redshifts dubbed `Little Red Dots' (LRDs), which typically show broad emission lines and are thoug…
Negative Lags on the Viscous Timescale in Quasar Photometry and Prospects for Detecting More with LSST
Amy Secunda, Jenny E. Greene, Yan-Fei Jiang +2
The variability of quasar light curves can be used to study the structure of quasar accretion disks. For example, continuum reverberation mapping uses delays between variability in…
A Negative Long Lag from the Optical to the UV Continuum in Fairall 9
Philippe Z. Yao, Amy Secunda, Yan-Fei Jiang +2
We report the detection of a long-timescale negative lag, where the blue bands lag the red bands, in the nearby Seyfert 1 galaxy Fairall 9. Active Galactic Nuclei (AGN) light curve…
Aligning Retrograde Nuclear Cluster Orbits with an Active Galactic Nucleus Accretion Disc
Syeda S. Nasim, Gaia Fabj, Freddy Caban +6
Stars and stellar remnants orbiting a supermassive black hole (SMBH) can interact with an active galactic nucleus (AGN) disc. Over time, prograde orbiters (inclination $i<90^{\circ…
Spectral Signatures of Population III and Envelope-stripped Stars in Galaxies at the Epoch of Reionization
Elizabeth Berzin, Amy Secunda, Renyue Cen +2
While most simulations of the epoch of reionization have focused on single-stellar populations in star-forming dwarf galaxies, products of binary evolution are expected to signific…
Delayed Photons from Binary Evolution Help Reionize the Universe
Amy Secunda, Renyue Cen, Taysun Kimm +2
High-resolution numerical simulations including feedback and aimed at calculating the escape fraction (fesc) of hydrogen-ionizing photons often assume stellar radiation based on si…